511 results match your criteria Stingray Envenomation


In Response to: "A Prospective Study of Stingray Injury and Envenomation Outcomes".

J Emerg Med 2018 Nov 21. Epub 2018 Nov 21.

Division of Medical Toxicology, Ronald O. Perelman Department of Emergency Medicine, New York University School of Medicine, New York, New York.

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November 2018

A new genus and three new species of Anthocephaliidae (Cestoda, Rhinebothriidea) from the round fantail stingray, Taeniurops grabata (Chondrichthyes, Dasyatidae) from the Mediterranean Sea and Atlantic Ocean.

J Helminthol 2018 Nov 15:1-11. Epub 2018 Nov 15.

Laboratoire de Biodiversité et Écosystèmes Aquatiques,Faculté des Sciences de Sfax,Université de Sfax,BP 1171,3000 Sfax, Tunisia.

The spiral intestines of a total of 16 round fantail stingrays Taeniurops grabata from the Mediterranean Sea off Tunisia were examined for cestodes. A new genus is erected in the Anthocephaliidae (Rhinebothridea) as Alveobothrium gen. n. Read More

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November 2018
6 Reads

Inhibitory effects of various solvent extracts from Rhamnus frangula leaves on some inflammatory and metabolic enzymes.

Cell Mol Biol (Noisy-le-grand) 2018 Oct 30;64(13):55-62. Epub 2018 Oct 30.

Biochemistry Department, Science College, King Saud University, P.O Box 22452, Riyadh 11495, Saudi Arabia.

Many enzymes are involved in numerous pathologies which are related to metabolic reactions and inflammatory diseases such as pancreatic lipase, α-amylase, α-glucosidase and xanthine oxidase and secreted phospholipases A2 (Group IIA, V and X), respectively. Therefore, inhibiting these enzymes offer the potential to block production of more inflammatory substances and decrease the risk factors for cardiovascular diseases. The purpose of this study was to investigate some potent, bioavailable and selective inhibitors of some catalytic proteins implicated to metabolic syndrome and their antioxidant effects from various solvent extracts of R. Read More

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October 2018
7 Reads
1.230 Impact Factor

Effect of Deepwater Horizon Crude Oil Water Accommodated Fraction on Olfactory Function in the Atlantic Stingray, Hypanus sabinus.

Sci Rep 2018 Oct 25;8(1):15786. Epub 2018 Oct 25.

Department of Biological Sciences, Florida Atlantic University, 777 Glades Road, Boca Raton, FL, 33431, USA.

The Deepwater Horizon oil spill was the largest accidental marine oil spill in history, releasing nearly 5 million barrels of crude oil. Crude oil causes both lethal and sublethal effects on marine organisms, and sensory systems have the potential to be strongly affected. Marine fishes rely upon the effective functioning of their sensory systems for detection of prey, mates, and predators. Read More

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October 2018
6 Reads

Two new species of Stillabothrium (Cestoda: Rhinebothriidea) from stingrays of the genus Fontitrygon from Senegal.

Folia Parasitol (Praha) 2018 Sep 21;65. Epub 2018 Sep 21.

Department of Biology, West Virginia State University, Institute, WV, USA.

Morphological and molecular analyses of cestode specimens collected during survey work of batoid elasmobranchs and their parasites in Senegal revealed two new species of the rhinebothriidean cestode genus Stillabothrium Healy et Reyda 2016. Stillabothrium allisonae Dedrick et Reyda sp. n. Read More

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September 2018
3 Reads

Antegrade fenestration and re-entry: The legacy continues.

Catheter Cardiovasc Interv 2018 Sep;92(3):505-506

Minneapolis Heart Institute, Abbott Northwestern Hospital, Minneapolis, Minnesota.

Subintimal guidewire entry during antegrade wiring attempts can be approached with various techniques, such as: (a) withdraw and redirect the guidewire; (b) parallel wire technique; (c) re-entry using the Stingray system or guidewires; or (d) using the retrograde approach Antegrade fenestration and re-entry is a creative novel technique for antegrade re-entry that uses balloon angioplasty at the distal cap to create fenestrations between the false lumen and the distal true lumen, followed by advancement of a soft-polymer jacketed guidewire through the fenestrations to achieve distal true lumen re-entry Antegrade fenestration and re-entry is an intuitive, simple, and low-cost technique, but balloon inflation may cause subintimal hematoma that could hinder re-entry. Additional study is needed to refine how antegrade fenestration and re-entry should optimally be performed and to better understand its strengths and shortcomings. Read More

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September 2018
7 Reads

Delayed healthcare and secondary infections following freshwater stingray injuries: risk factors for a poorly understood health issue in the Amazon.

Rev Soc Bras Med Trop 2018 Sep-Oct;51(5):651-659

Diretoria de Ensino e Pesquisa, Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM, Brasil.

Introduction: This study aimed to describe the profile of freshwater stingray injuries in the State of Amazonas, Brazilian Amazon, and to identify the associated risk factors for secondary infections.

Methods: This cross-sectional study used surveillance data from 2007 to 2014 to identify factors associated with secondary infections from stingray injuries.

Results: A total of 476 freshwater stingray injuries were recorded, with an incidence rate of 1. Read More

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October 2018
1 Read

Sex may influence environmental diphenhydramine accumulation in Round Stingrays.

Mar Pollut Bull 2018 Oct 1;135:648-653. Epub 2018 Aug 1.

Department of Environmental Science, Baylor University, 1301 S University Parks Dr, Waco, TX 76706, USA. Electronic address:

Despite the amount of treated wastewater discharged into the Southern California Bight, few studies have examined pharmaceutical compounds in local biota. The Round Stingray (Urobatis halleri) was selected as a representative elasmobranch species to perform an exploratory study on environmental pharmaceutical exposure. Archived liver samples of males and females from juvenile to adult size classes from several locations (n = 53) were examined for 18 pharmaceutical and illicit drug compounds using isotope-dilution LC-MS/MS. Read More

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October 2018
1 Read

Identification and characterization of antioxidant peptides from hydrolysate of blue-spotted stingray and their stability against thermal, pH and simulated gastrointestinal digestion treatments.

Food Chem 2019 Jan 27;271:614-622. Epub 2018 Jul 27.

Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, 31900 Kampar, Malaysia; Centre for Biodiversity Research, Universiti Tunku Abdul Rahman, 31900 Kampar, Malaysia. Electronic address:

This study was conducted to identify and characterize antioxidant peptides from the alcalase hydrolysate of the blue-spotted stingray. Purification steps guided by ABTS cation radical (ABTS) scavenging assay and de novo peptide sequencing produced two peptides, WAFAPA (661.3224 Da) and MYPGLA (650. Read More

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January 2019
1 Read

Use of chronic total occlusion percutaneous coronary intervention techniques for treating acute vessel closure.

Catheter Cardiovasc Interv 2018 Sep 14. Epub 2018 Sep 14.

Minneapolis Heart Institute, Abbott Northwestern Hospital and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota.

Acute vessel closure due to dissection is a known complication of percutaneous coronary intervention and can be challenging to treat, especially if guidewire position is lost. Re-entering into the distal true lumen is commonly done during chronic total occlusion interventions, as part of antegrade dissection strategies. We report two cases of acute vessel closure and guidewire position loss in which the Stingray LP system was successfully used to advance a guidewire into the distal true lumen and recanalize the occluded vessel. Read More

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September 2018
1 Read

HISPIDORHYNCHUS STYRACURAE N. SP. (TRYPANORHYNCHA: EUTETRARHYNCHIDAE) FROM THE CHUPARE STINGRAY, STYRACURA SCHMARDAE (WERNER), FROM THE CARIBBEAN SEA, INCLUDING NEW RECORDS OF ONCOMEGAS WAGENERI (LINTON, 1890).

J Parasitol 2018 Sep 12. Epub 2018 Sep 12.

* Universidade de Sao Paulo University of Melbourne.

Species of the eutetrarhynchid genus Hispidorhynchus Schaeffner and Beveridge, 2012 possess an uncinate macrohook on the bothrial surface of the basal swelling of each tentacle. This unique feature of the oncotaxy is only shared with the closely-related genus Oncomegas Dollfus, 1929. A new species of Hispidorhynchus is described from specimens infecting Styracura schmardae (Werner, 1904) (Potamotrygonidae) from the western Caribbean Sea off the coast of Belize and Panama. Read More

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September 2018
8 Reads

Superficial Temporal Artery to Anterior Cerebral Artery Hemi-bonnet Bypass Using Radial Artery Graft for Prevention of Complications after Surgical Treatment of Partially Thrombosed Large/Giant Anterior Cerebral Artery Aneurysm.

J Stroke Cerebrovasc Dis 2018 Dec 8;27(12):3505-3510. Epub 2018 Sep 8.

Department of Neurosurgery, National Defense Medical College, Saitama, Japan.

Background: Partially thrombosed large/giant aneurysm of the anterior cerebral artery is still challenging because this complex aneurysm requires arterial revascularization in the deep operation field. Therefore, direct neck clipping is often impossible. We describe our experiences with extracranial-intracranial bypass as an insurance bypass prior to clipping of partially thrombosed anterior cerebral artery aneurysms, and discuss the microsurgical technique and strategy. Read More

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December 2018
3 Reads

Legacy polychlorinated biphenyl contamination impairs male embryonic development in an elasmobranch with matrotrophic histotrophy, the round stingray (Urobatis halleri).

Environ Toxicol Chem 2018 Nov 5;37(11):2904-2911. Epub 2018 Oct 5.

Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.

Anthropogenic chemical exposure can result in overall reductions in reproductive success. Using the round stingray (Urobatis halleri) as an elasmobranch model with internal gestation, we measured female fecundity and embryo growth from postovulation to near parturition to test the hypothesis that environmental polychlorinated biphenyl (PCB) contamination would impair reproductive success. Two sites were sampled from southern California, USA: the mainland site was exposed to legacy PCB contamination (with low exposure to other anthropogenic contaminants), and the offshore reference site at Catalina Island was a separate population with low anthropogenic influence. Read More

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November 2018

Five New Species of the Tapeworm Genus Anthocephalum (Rhinebothriidea: Anthocephaliidae) Parasitizing A Single Species of Indo-Pacific Stingray and A Revised Diagnosis of the Genus.

J Parasitol 2018 Oct 19;104(5):505-522. Epub 2018 Jul 19.

Department of Ecology and Evolutionary Biology, University of Kansas, Haworth Hall, 1200 Sunnyside Avenue, Lawrence, Kansas 66045.

Five new species of the elasmobranch tapeworm genus Anthocephalum Linton, 1890 (Rhinebothriidea: Anthocephaliidae Ruhnke, Caira and Cox, 2015 ) are described from the mangrove whipray, Urogymnus granulatus (Macleay) from the Solomon Islands and northern Australia. Anthocephalum blairi n. sp. Read More

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October 2018
13 Reads

Sustainability issues of commercial non-timber forest product extraction in West Suriname.

J Ethnobiol Ethnomed 2018 Jun 28;14(1):44. Epub 2018 Jun 28.

Naturalis Biodiversity Center, Vondellaan 55, 2332 AA, Leiden, Netherlands.

Background: Non-timber forest products (NTFPs) have been traded for millennia by indigenous communities. Current increased demands driven by globalisation, however, put more pressure on local harvesters and their surrounding ecosystems. The safeguarding of indigenous access rights to harvesting grounds is needed, either through communal land titles or collaborative management agreements, both to secure prior indigenous rights and to minimise further negative ecological impacts. Read More

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The evolution of underwater flight: The redistribution of pectoral fin rays, in manta rays and their relatives (Myliobatidae).

J Morphol 2018 Aug 7;279(8):1155-1170. Epub 2018 Jun 7.

Department of Biology, 1600 Holloway Ave, San Francisco State University, San Francisco, California, 94132.

Batoids are a diverse clade of flat cartilaginous fishes that occur primarily in benthic marine habitats. The skates and rays typically use their flexible pectoral fins for feeding and propulsion via undulatory swimming. However, two groups of rays have adopted a pelagic or bentho-pelagic lifestyle and utilize oscillatory swimming-the Myliobatidae and Gymnuridae. Read More

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August 2018
8 Reads

Isolation and Characterization of Polymorphic Microsatellite Loci from Pale-edged stingray, Telatrygon zugei (Elasmobranchii, Dasyatidae).

Integr Zool 2018 May 31. Epub 2018 May 31.

Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, the People's Republic of China.

This article is protected by copyright. All rights reserved. Read More

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Potamotrygon motoro stingray venom induces both neurogenic and inflammatory pain behavior in rodents.

Toxicon 2018 Aug 25;150:168-174. Epub 2018 May 25.

Laboratório Especial de Dor e Sinalização, Instituto Butantan, São Paulo, SP, Brazil. Electronic address:

Freshwater stingray accidents cause an immediate, intense, and unrelieved pain which is followed by edema, erythema and necrosis formation. Treatment for stingray envenomation is based on administration of analgesic, antipyretic and anti-inflammatory drugs. Concerning pain control, it is prescribed to immerse punctured limb on hot water to alleviate pain. Read More

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August 2018
1 Read

A Prospective Study of Stingray Injury and Envenomation Outcomes.

J Emerg Med 2018 08 24;55(2):213-217. Epub 2018 May 24.

Department of Emergency Medicine, University of California San Diego, San Diego, California; Division of Medical Toxicology, University of California San Diego, San Diego, California; Scripps Clinic Medical Group, La Jolla, California.

Background: Stingray injuries result in thousands of emergency department visits annually.

Objectives: This study aimed to assess the complication rate and outcome of field treatment with hot water immersion.

Methods: This was an on-site, prospective, observational study. Read More

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August 2018
4 Reads

Activation of QA devices and phantom materials under clinical scanning proton beams-a gamma spectrometry study.

Phys Med Biol 2018 Jun 7;63(11):115014. Epub 2018 Jun 7.

Faculty of Nuclear Sciences and Physical Engineering, Department of Dosimetry and Application of Ionizing Radiation, Czech Technical University in Prague, Břehová 7, 115 19 Praha 1, Czechia.

Activation of detectors and phantoms used for commissioning and quality assurance of clinical proton beams may lead to radiation protection issues. Good understanding of the activation nuclide vectors involved is necessary to assess radiation risk for the personnel working with these devices on a daily basis or to fulfill legal requirements regarding transport of radioactive material and its release to the public. 11 devices and material samples were irradiated with a 220 MeV proton pencil beam (PBS, Proton Therapy Center, Prague). Read More

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June 2018
2 Reads

Age and growth of the endemic Xingu River stingray Potamotrygon leopoldi validated using fluorescent dyes.

J Fish Biol 2018 Jun;92(6):1985-1999

Departamento de Pesca e Aqüicultura (DEPAq), Universidade Federal Rural de Pernambuco (UFRPE), Dois Irmãos, Recife, PE, CEP 52171-900, Brazil.

Between 2003 and 2005, vertebrae of 151 Xingu River Potamotrygon leopoldi (Potamotrygonidae) (75 males and 76 females) were analysed to derive a growth curve for this species. The disc width (W ) was significantly different between sexes, with females measuring 149-700 mm W and males 109-500 mm W . The average percentage error for vertebrae readings of the whole sample was 2·7%. Read More

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Hypanocotyle bullardi n. gen. n. sp. (Monogenea: Hexabothriidae) from gill of the diamond stingray Hypanus dipterurus (Jordan et Gilbert) (Myliobatiformes: Dasyatidae) in the Southeastern Pacific Ocean off Peru.

Parasitol Int 2018 Aug 3;67(4):425-430. Epub 2018 Apr 3.

Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Caixa Postal 74.540, Seropédica, RJ, Brazil, CEP 23851-970.. Electronic address:

A new genus and species of monogenean belonging to Hexabothriidae, Hypanocotyle bullardi n. gen. n. Read More

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Whiptail Stingray Injury.

Wilderness Environ Med 2018 06 9;29(2):243-247. Epub 2018 Mar 9.

Intensive Care Unit, Centre Hospitalier de Mayotte, Mayotte, France (Drs Durasnel and Blondé). Electronic address:

Stingray injuries to the chest are rare but potentially life-threatening. They may occur in remote areas where advanced emergency healthcare services are unavailable. We describe the case of a 24-year-old man with tension pneumothorax due to a Himantura fai stingray injury to the left chest. Read More

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June 2018
2 Reads

Evaluating the interactions between red stingray (Dasyatis akajei) melanocortin receptors and elephant shark (Callorhinchus milii) MRAP1 and MRAP2 following stimulation with either stingray ACTH(1-24) or stingray Des-Acetyl-αMSH: A pharmacological study in Chinese Hamster Ovary cells.

Gen Comp Endocrinol 2018 09 7;265:133-140. Epub 2018 Mar 7.

School of Marine Biosciences, Kitasato University, Sagaminara, Japan.

Previous studies on bony vertebrate MC2R orthologs (i.e., ray finned fishes, amphibians, reptiles, birds, and mammals) have shown that these MC2R orthologs have an obligatory requirement for interaction with bony vertebrate MRAP1 orthologs to a) allow for the trafficking of the MC2R ortholog to the plasma membrane; and b) to allow activation by ACTH, but not by any MSH-sized ligand. Read More

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September 2018
5 Reads

Dynamic variations in platelet counts may reflect the severity and prognosis of stingray injuries in the early phase.

Am J Emerg Med 2018 May 27;36(5):910.e1-910.e4. Epub 2018 Feb 27.

Emergency Department, West China Hospital of Sichuan University, 37 Guoxue Road, Chengdu, Sichuan, China. Electronic address:

There is often a delay in offering quality and prompt treatment after a stingray sting. We present 3 cases of stings and discuss the Poisoning Severity Score (PSS) and a simple tool to assess the severity of such injuries. A 34-year-old man, who worked as an aquarium keeper, presented a wound on the left fifth digit caused by a stingray. Read More

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May 2018
11 Reads

Selenium and Mercury Interactions in Apex Predators from the Gulf of Trieste (Northern Adriatic Sea).

Nutrients 2018 Feb 28;10(3). Epub 2018 Feb 28.

Department Environmental Sciences, Jozef Stefan Institute, Jamova, 39 1000 Ljubljana, Slovenia.

Since the environmental levels of selenium (Se) can moderate the bioaccumulation and toxicity of mercury (Hg) in marine organisms, their interactions were studied in seawater, sediments, plankton and the benthic (Bull ray , Eagle ray ) and the pelagic (Pelagic stingray ) rays, as apex predators in the Gulf of Trieste (Northern Adriatic Sea). Male and female rays showed no difference in the Se contents in muscle tissue. Pelagic species contained higher Se levels in muscle but slightly lower levels in the livers of both genders. Read More

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February 2018
3.150 Impact Factor

The physiological stress response of the Atlantic stingray (Hypanus sabinus) to aerial exposure.

Comp Biochem Physiol A Mol Integr Physiol 2018 05 23;219-220:38-43. Epub 2018 Feb 23.

Department of Coastal Sciences, Gulf Coast Research Laboratory, University of Southern Mississippi, 703 E Beach Dr., Ocean Springs, MS 39564, USA.

Although secondary stress physiology of elasmobranchs is fairly well studied, gaps remain in our understanding of species differences, including stress recovery. We examined the physiological stress response to air exposure in Atlantic stingrays (Hypanus sabinus) using a serial sampling method requiring minimal handling. Many elasmobranch stress studies exclusively quantify glucose, although there is evidence that elasmobranchs are unusually reliant on ketone bodies. Read More

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May 2018
2 Reads

Challenges, pitfalls and surprises: development and validation of a monoclonal antibody for enzyme immunoassay of the steroid 1α-hydroxycorticosterone in elasmobranch species.

Gen Comp Endocrinol 2018 09 31;265:83-89. Epub 2018 Jan 31.

Department of Coastal Sciences, University of Southern Mississippi, Ocean Springs, MS 39564, USA.

Sharks and rays are popular species used in wildlife ecotourism and aquariums to educate the public on the behavior, ecology and conservation challenges of elasmobranchs. To understand long-term physiological health and welfare under varying social and husbandry conditions, we developed and validated an enzyme immunoassay (EIA) to measure stress/ionoregulatory hormones in managed and semi-free range southern rays (Hypanus americanus). Banked serum and interrenal samples from 27 female rays managed at Disney's The Seas with Nemo and Friends® and Castaway Cay were used to evaluate measurement of 1α-hydroxycorticosterone (1αOHB) relative to corticosterone (B). Read More

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September 2018
4 Reads

Elasmobranch bycatch in the Italian Adriatic pelagic trawl fishery.

PLoS One 2018 29;13(1):e0191647. Epub 2018 Jan 29.

Italian National Research Council (CNR), Institute of Marine Sciences (ISMAR), Ancona, Italy.

Elasmobranchs are among the most threatened long-lived marine species worldwide, and incidental capture is a major source of mortality. The northern central Adriatic Sea, though one of the most overfished basins of the Mediterranean Sea, supports a very valuable marine biodiversity, including elasmobranchs. This study assesses the impact of the northern central Adriatic pelagic trawl fishery on common smooth-hound (Mustelus mustelus), spiny dogfish (Squalus acanthias), common eagle ray (Myliobatis aquila), and pelagic stingray (Pteroplatytrygon violacea) by examining incidental catches recorded between 2006 and 2015. Read More

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Case Report: Iatrogenic Infection from Traditional Treatment of Stingray Envenomation.

Am J Trop Med Hyg 2018 03 18;98(3):929-932. Epub 2018 Jan 18.

Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.

A 47-year-old man was stung on the left ankle by a stingray while on vacation on the Island of Bubaque, Guinea-Bissau. The affected limb was initially treated with an attempt to suck out the venom and application of chewed plant root. The following 3 days, local pain gradually diminished, but then high fever erupted together with generalized symptoms and intense pain from the ankle. Read More

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March 2018
1 Read

The "double stingray technique" for recanalizing chronic total occlusions with bifurcation at the distal cap.

Catheter Cardiovasc Interv 2018 May 23;91(6):1079-1083. Epub 2018 Jan 23.

Minneapolis Heart Institute, Abbott Northwestern Hospital, Minneapolis, Minnesota.

Antegrade dissection re-entry is often discouraged for chronic total occlusions (CTOs) with a bifurcation at the distal cap due to risk of side branch occlusion that can lead to periprocedural myocardial infarction and incomplete revascularization. Antegrade dissection re-entry, however, is often needed, especially in complex cases. We present the novel "double Stingray technique" for CTOs involving bifurcations, in which the Stingray system is used twice for re-entry into both vessel branches, followed by two-stent bifurcation stenting to maintain the patency of both branches. Read More

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May 2018
5 Reads
2.110 Impact Factor

WHOLE BLOOD TRANSFUSIONS TO TREAT SEVERE ANEMIA IN SEVEN COWNOSE RAYS ( RHINOPTERA BONASUS) AND ONE SHORT-TAIL STINGRAY ( DASYATIS BREVICAUDATA).

J Zoo Wildl Med 2017 Dec;48(4):1172-1180

Blood transfusions can provide life-saving treatment to severely anemic animals. Due to limited availability and the difficulty of storing whole blood and blood products, such as fresh frozen plasma and packed red blood cells, exotic animals often receive fresh whole blood transfusions. Little is known about elasmobranch blood types and transfusions. Read More

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December 2017
3 Reads

Automated segmentation of complex patterns in biological tissues: Lessons from stingray tessellated cartilage.

PLoS One 2017 13;12(12):e0188018. Epub 2017 Dec 13.

Zuse Institute Berlin, Dept. of Visual Data Analysis, Berlin, Germany.

Introduction: Many biological structures show recurring tiling patterns on one structural level or the other. Current image acquisition techniques are able to resolve those tiling patterns to allow quantitative analyses. The resulting image data, however, may contain an enormous number of elements. Read More

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January 2018
2 Reads

A New Algorithm for Crossing Chronic Total Occlusions From the Asia Pacific Chronic Total Occlusion Club.

JACC Cardiovasc Interv 2017 Nov;10(21):2135-2143

Toyohashi Heart Centre, Toyohashi, Aichi, Japan.

Although the hybrid chronic total occlusion (CTO) algorithm had many excellent recommendations, there has been infrequent adoption in the Asia Pacific region. The Asia Pacific CTO club propose an algorithm for case selection based on the Japan-CTO score and a new CTO algorithm, which is applicable globally. This algorithm allows for differing skill sets and equipment availability and contains practical teaching for CTO percutaneous coronary intervention. Read More

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November 2017
13 Reads

Large batoid fishes frequently consume stingrays despite skeletal damage.

R Soc Open Sci 2017 Sep 6;4(9):170674. Epub 2017 Sep 6.

Department of Earth Sciences, Natural History Museum, London, UK.

The shapes of vertebrate teeth are often used as hallmarks of diet. Here, however, we demonstrate evidence of frequent piscivory by cartilaginous fishes with pebble-like teeth that are typically associated with durophagy, the eating of hard-shelled prey. High-resolution micro-computed tomography observation of a jaw specimen from one batoid species and visual investigation of those of two additional species reveal large numbers of embedded stingray spines, arguing that stingray predation of a scale rivalling that of the largest carnivorous sharks may not be uncommon for large, predatory batoids with rounded, non-cutting dentition. Read More

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September 2017
2 Reads

A molecular approach towards taxonomic identification of elasmobranch species from Maltese fisheries landings.

Mar Genomics 2017 Dec 3;36:17-23. Epub 2017 Oct 3.

Conservation Biology Research Group, Department of Biology, University of Malta, Msida MSD2080, Malta.

The mitochondrial genome, through the application of DNA barcoding, provides a powerful tool for identifying species even when specimens are either incomplete or belong to species that exhibit cryptic diversity. In fisheries management accurate identification of whole or part of the specimens landed is a fundamental requirement for the conservation of species affected directly or indirectly by the fisheries activities. In this study cytochrome c oxidase subunit I (COI) and NADH dehydrogenase subunit 2 (ND2) sequences were used to genetically distinguish 36 elasmobranch species collected from Maltese (Central Mediterranean) commercial fisheries landings. Read More

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December 2017

Calcified cartilage or bone? Collagens in the tessellated endoskeletons of cartilaginous fish (sharks and rays).

J Struct Biol 2017 10 18;200(1):54-71. Epub 2017 Sep 18.

Department Biomaterials, Max Planck Institute of Colloids & Interfaces, Potsdam, Germany.

The primary skeletal tissue in elasmobranchs -sharks, rays and relatives- is cartilage, forming both embryonic and adult endoskeletons. Only the skeletal surface calcifies, exhibiting mineralized tiles (tesserae) sandwiched between a cartilage core and overlying fibrous perichondrium. These two tissues are based on different collagens (Coll II and I, respectively), fueling a long-standing debate as to whether tesserae are more like calcified cartilage or bone (Coll 1-based) in their matrix composition. Read More

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October 2017
26 Reads

Near-death Thoracic Trauma Caused by a Stingray in the Indian Ocean.

Semin Thorac Cardiovasc Surg 2017 Summer;29(2):262-263. Epub 2017 Feb 16.

Cardiovascular and Thoracic Surgery Department, Felix Guyon University Hospital, Saint-Denis, La Réunion, France.

Stingray injuries are frequent, and although mostly benign, some can be life-threatening. We present the case of a 24-year-old man who suffered from a stingray attack in the Indian Ocean with a thoracic penetrating trauma, and its management. Read More

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September 2017
2 Reads

Biological notes on the reef stingray, Urobatis concentricus, an endemic species of Mexico.

J Fish Biol 2017 Oct 14;91(4):1228-1235. Epub 2017 Aug 14.

Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, 23096, La Paz, BCS, Mexico.

This study found that the reef stingray Urobatis concentricus presents a matrotrophic aplacental viviparous reproduction with yolk sac and trophonemata formation. Growth of ovarian follicles occurs asynchronously and continuously with fecundity of three embryos per female. A maximum size of 58·4 cm total length and 37·6 cm disc width was recorded, corresponding to a mature female of 3 or 4 years of age. Read More

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October 2017

Who's My Daddy? Considerations for the influence of sexual selection on multiple paternity in elasmobranch mating systems.

Ecol Evol 2017 08 15;7(15):5603-5612. Epub 2017 Jun 15.

California State University, Long Beach Long Beach CA USA.

Polyandry resulting in multiply-sired litters has been documented in the majority of elasmobranch species examined to date. Although commonly observed, reasons for this mating system remain relatively obscure, especially in batoids. The round stingray () is an abundant, well-studied elasmobranch distributed throughout the northeastern Pacific that we used to explore hypotheses regarding multiple paternity in elasmobranchs. Read More

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August 2017
9 Reads
1.660 Impact Factor

Stingray venom activates IL-33 producing cardiomyocytes, but not mast cell, to promote acute neutrophil-mediated injury.

Sci Rep 2017 Aug 11;7(1):7912. Epub 2017 Aug 11.

Immunoregulation Unit of the Special Laboratory of Applied Toxinology(CEPID/FAPESP), Butantan Institute, São Paulo, Brazil.

One of the hallmarks of acute inflammation is neutrophil infiltration of tissues. We investigated molecular mechanisms implicated in acute neutrophilic inflammation induced by the venom of a freshwater stingray (Potamotrygon cf. henlei) in mice. Read More

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August 2017
47 Reads

Observations of marine wildlife tourism effects on a non-focal species.

J Fish Biol 2017 Sep 30;91(3):981-988. Epub 2017 Jul 30.

College of Science and Engineering, Flinders University, Adelaide, South Australia 5042, Australia.

A radio-acoustic positioning system was used to assess the effects of shark cage-diving operators (SCDO) on the fine-scale movements of a non-focal species, the smooth stingray Bathytoshia brevicaudata. The results revealed that the time spent in the array was individually variable, but generally increased when SCDO were present and that the presence of SCDO may have the capacity to elicit changes in the space use of B. brevicaudata. Read More

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September 2017

Survey of Antibiotic-producing Bacteria Associated with the Epidermal Mucus Layers of Rays and Skates.

Front Microbiol 2017 5;8:1050. Epub 2017 Jul 5.

Mote Marine Laboratory, SarasotaFL, United States.

Elasmobranchs represent a distinct group of cartilaginous fishes that harbor a remarkable ability to heal wounds rapidly and without infection. To date very little work has addressed this phenomenon although it is suggested that antibiotic capabilities associated with epidermal surfaces may be a factor. The study of benefits derived from mutualistic interactions between unicellular and multicellular organisms is a rapidly growing area of research. Read More

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July 2017
1 Read

Injuries caused by freshwater stingrays in the Tapajós River Basin: a clinical and sociodemographic study.

Rev Soc Bras Med Trop 2017 May-Jun;50(3):374-378

Departamento de Dermatologia e Radioterapia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, São Paulo, Brasil.

Introduction: Freshwater stingray envenomations are an important cause of morbidity in riverine populations living in various regions of Brazil. The sequelae include temporary or permanent disability. This study aimed to identify sociodemographic, clinical, and therapeutic aspects related to stingray injuries in such populations. Read More

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July 2017
23 Reads

Antegrade Dissection and Reentry as Part of the Hybrid Chronic Total Occlusion Revascularization Strategy: A Subanalysis of the RECHARGE Registry (Registry of CrossBoss and Hybrid Procedures in France, the Netherlands, Belgium and United Kingdom).

Circ Cardiovasc Interv 2017 Jun;10(6)

From the Faculty of Medicine and Life Sciences, Universiteit Hasselt, Belgium (J.M., J.D.); Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium (J.M., J.D.); Department of Cardiology, Forth Valley Royal Hospital, Edinburgh, United Kingdom (J.C.S., W.W., S.W.); Department of Cardiology, Freeman Hospital, Newcastle upon Tyne, United Kingdom (A.J.B., M.E.); Institute of Cellular Medicine, Newcastle University, United Kingdom (A.J.B., M.E.); Department of Cardiology, VU University Medical Center, Amsterdam, the Netherlands (W.S., A.N., P.K.); Department of Cardiology, Universitair Medisch Centrum Utrecht, the Netherlands (P.A.); Department of Cardiology, St. Antonius Hospital, Nieuwegein, the Netherlands (P.A.); Department of Cardiology, Belfast City Hospital, United Kingdom (C.G.H., S.W.); Department of Cardiology, Groupe Hospitalier Mutualiste, Grenoble, France (B.F.); Department of Cardiology, Clinique de Marignane, France (A.A.); and Department of Cardiology, Nouvelles Cliniques Nantaises, Nantes, France (E.B.).

Background: Development of the CrossBoss and Stingray devices for antegrade dissection and reentry (ADR) of chronic total occlusions has improved historically suboptimal outcomes. However, the outcomes, safety, and failure modes of the technique have to be studied in a larger patient cohort. This preplanned substudy of the RECHARGE registry (Registry of CrossBoss and Hybrid Procedures in France, the Netherlands, Belgium and United Kingdom) aims to evaluate the value and use of ADR and determine its future position in contemporary chronic total occlusion intervention. Read More

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June 2017
38 Reads

Traumatic Pneumothorax Associated With Penetrating Neck Injury Caused by a Stingray: A Case Report.

Wilderness Environ Med 2017 Jun 25;28(2):119-121. Epub 2017 Apr 25.

Kameda Medical Center Emergency and Trauma Center, Kamogawa City, Chiba, Japan (Drs Suzuki and Fudoji); Department of General Medicine, Shirakawa Satellite for Teaching and Research (STAR), Fukushima Medical University, Shirakawa, Fukushima, Japan (Dr Takada).

We describe a patient with missed traumatic pneumothorax due to penetrating neck injury that was presumably caused by a stingray while diving. The barb can result in significant injuries to deep structures and organs despite a deceptively small entrance wound. This case underscores the importance of performing a thorough examination and having a high suspicion of distant injury in patients with penetrating neck injuries. Read More

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June 2017
7 Reads

Two new species of Tetragonocephalum (Cestoda: Lecanicephalidea) from Pastinachus sephen (Myliobatiformes: Dasyatidae) from the Gulf of Oman.

Folia Parasitol (Praha) 2017 Apr 24;64. Epub 2017 Apr 24.

School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Iran.

In the present study two new species of Tetragonocephalum Shipley et Hornell, 1905, T. mackenziei sp. n. Read More

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April 2017
8 Reads

A Rare Case of Tropical Pyomysitis Acquired on Vacation in a Healthy Male.

Authors:
K Poole T Tran

J La State Med Soc 2017 Mar-Apr;169(2):53. Epub 2017 Apr 15.

Department of Internal Medicine, Ochsner Medical Center, New Orleans, LA.

Introduction: Pyomyositis has traditionally been considered a tropical disease. Increasing prevalence has been observed in more northern climates, especially with HIV, immunosuppression, and IV drug abuse as predisposing factors. Pyomyositis has the tendency to mimic other conditions, such as muscle contusion, necrotizing fasciitis, or septic arthritis. Read More

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September 2017
3 Reads