108 results match your criteria conservation flatfishes


Large-scale sequencing of flatfish genomes provides insights into the polyphyletic origin of their specialized body plan.

Nat Genet 2021 Apr 19. Epub 2021 Apr 19.

School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China.

The evolutionary and genetic origins of the specialized body plan of flatfish are largely unclear. We analyzed the genomes of 11 flatfish species representing 9 of the 14 Pleuronectiforme families and conclude that Pleuronectoidei and Psettodoidei do not form a monophyletic group, suggesting independent origins from different percoid ancestors. Genomic and transcriptomic data indicate that genes related to WNT and retinoic acid pathways, hampered musculature and reduced lipids might have functioned in the evolution of the specialized body plan of Pleuronectoidei. Read More

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Reconciling seascape genetics and fisheries science in three codistributed flatfishes.

Evol Appl 2021 Feb 2;14(2):536-552. Epub 2020 Nov 2.

Laboratory of Biodiversity and Evolutionary Genomics KU Leuven Leuven Belgium.

Uncertainty hampers innovative mixed-fisheries management by the scales at which connectivity dynamics are relevant to management objectives. The spatial scale of sustainable stock management is species-specific and depends on ecology, life history and population connectivity. One valuable approach to understand these spatial scales is to determine to what extent population genetic structure correlates with the oceanographic environment. Read More

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February 2021

Chromosome level reference of Atlantic halibut Hippoglossus hippoglossus provides insight into the evolution of sexual determination systems.

Mol Ecol Resour 2021 Mar 2. Epub 2021 Mar 2.

Biology Department, Dalhousie University, Halifax, NS, Canada.

Changes in the genetic mechanisms that control sexual determination have occurred independently across the tree of life, and with exceptional frequency in teleost fishes. To investigate the genomic changes underlying the evolution of sexual determination, we sequenced a chromosome-level genome, multitissue transcriptomes, and reduced representation population data for the Atlantic halibut (Hippoglossus hippoglossus), which has an XY/XX sex determination mechanism and has recently diverged (0.9-3. Read More

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Genome assembly and annotation at the chromosomal level of first Pleuronectidae: Verasper variegatus provides a basis for phylogenetic study of Pleuronectiformes.

Genomics 2021 Mar 31;113(2):717-726. Epub 2021 Jan 31.

Tianjin Fisheries Research Institute, Tianjin 300200, China. Electronic address:

High quality genome is of great significance for the mining of biological information resources of species. Up to now, the genomic information of several important economic flatfishes has been well explained. All these fishes are eyes on left side-type, and no high-quality genome of eyes on right side-type species has been reported. Read More

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Evaluating socio-economic and conservation impacts of management: A case study of time-area closures on Georges Bank.

PLoS One 2020 13;15(10):e0240322. Epub 2020 Oct 13.

eOceans, Dartmouth, Nova Scotia, Canada.

Globally, economies and marine ecosystems are increasingly dependent on sustainable fisheries management (SFM) to balance social, economic, and conservation needs. The overarching objectives of SFM are to maximize both conservation and socio-economic benefits, while minimizing short-term socio-economic costs. A number of tools have been developed to achieve SFM objectives, ranging from fishery specific to ecosystem-based strategies. Read More

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December 2020

Spatio-temporal patterns in juvenile habitat for 13 groundfishes in the California Current Ecosystem.

PLoS One 2020 21;15(8):e0237996. Epub 2020 Aug 21.

Fisheries Research, Analysis and Monitoring Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, United States of America.

Identifying juvenile habitats is critical for understanding a species' ecology and for focusing spatial fishery management by defining references like essential fish habitat (EFH). Here, we used vector autoregressive spatio-temporal models (VAST) to delineate spatial and temporal patterns in juvenile density for 13 commercially important species of groundfishes off the US west coast. In particular, we identified hotspots with high juvenile density. Read More

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October 2020

Population genetic structure of turbot (Scophthalmus maximus L., 1758) in the Black Sea.

J Fish Biol 2020 Oct 9;97(4):1154-1164. Epub 2020 Sep 9.

Republic of Turkey Ministry of Agriculture and Forestry General Directorate of Agricultural Research and Policies, Ankara, Turkey.

Turbot, Scophthalmus maximus, is a commercially important demersal flatfish species distributed throughout the Black Sea. Several studies performed locally with a limited number of specimens using both mitochondrial DNA (mtDNA) and microsatellite markers evidenced notable genetic variation among populations. However, comprehensive population genetic studies are required to help management of the species in the Black Sea. Read More

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October 2020

Two short antimicrobial peptides derived from prosaposin-like proteins in the starry flounder (Platichthys stellatus).

Fish Shellfish Immunol 2020 Oct 30;105:95-103. Epub 2020 Jun 30.

Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea. Electronic address:

Prosaposin (PSAP) is a precursor of saposin (SAP), which is present in lysosomal and secreted proteins. PSAP is a member of the SAP-like protein families, which comprise multifunctional proteins. In particular, their antimicrobial activity has been reported. Read More

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October 2020

Transmission of a Freshwater Isolate of Ichthyophonus (Clade C) to Two Marine Fish Species.

J Aquat Anim Health 2019 12 9;31(4):349-353. Epub 2019 Oct 9.

Clear Springs Foods, Inc., Post Office Box 712, Buhl, Idaho, 83316, USA.

The ingestion of infected prey is the most recognizable mode of transmission for Ichthyophonus, but because this mode of transmission is unidirectional from small prey fish to larger predators, it cannot sustain the parasite within or among populations nor does it explain transmission to planktivores. Recently, waterborne transmission was demonstrated in cultured Rainbow Trout Oncorhynchus mykiss, which could explain how the parasite is transmitted without piscivory. However, it is possible that this is an adaptation to aquaculture conditions, and may not occur among wild fish. Read More

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December 2019

Identification and initial functional characterization of lysosomal integral membrane protein type 2 (LIMP-2) in turbot (Scophthalmus maximus L.).

Dev Comp Immunol 2019 10 6;99:103412. Epub 2019 Jun 6.

Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China. Electronic address:

The immune system protects organism from external pathogens, this progress starts with the pathogen recognition by pattern recognition receptors (PRRs). As a group of PRRs, the class B scavenger receptors showed important roles in phagocytosis. Among three class B scavenger receptors, lysosomal integral membrane protein type 2 (LIMP-2) was reported to present in the limiting membranes of lysosomes and late endosomes, but its immune roles in teleost species are still limited in handful species. Read More

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October 2019

Characterizing preferences of fishermen to inform decision-making: A case study of the Pacific halibut (Hippoglossus stenolepis) fishery off Alaska.

PLoS One 2019 1;14(3):e0212537. Epub 2019 Mar 1.

Juneau Center for Fisheries and Ocean Sciences, University of Alaska Fairbanks, Juneau, Alaska, United States of America.

In fisheries management, ex-ante analysis of fishermen's preferences can provide reliable insights into specific characteristics of regulatory alternatives that are desirable, objectionable, or important, in the judgement of fishermen. This knowledge could facilitate consideration by fishery managers of additional regulatory alternatives with high likelihoods of meeting program objectives, minimal disruption to fishing operations and lifestyles, and high levels of acceptance and compliance from the fishing fleet. In this case study, we interviewed Pacific halibut fishermen (n = 76) in four communities across Southeast Alaska, to document their preferences about different types of data collection methods on their vessels. Read More

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November 2019

Sensitivity of multispecies maximum sustainable yields to trends in the top (marine mammals) and bottom (primary production) compartments of the southern North Sea food-web.

PLoS One 2019 28;14(1):e0210882. Epub 2019 Jan 28.

Institute for Hydrobiology and Fishery Science (IHF), University of Hamburg, Hamburg, Germany.

In marine ecosystems, maximum sustainable yield considerations are affected by any substantial changes that occur in the top and bottom compartments of the food-web. This study explores how the southern North Sea's fisheries may need to adjust their fishing efforts to maintain optimum yields of sole, plaice, cod and brown shrimps under increased marine mammal populations and a reduced primary productivity. We constructed plausible scenarios of ongoing food-web changes using the results of Bayesian age-structured population models to estimate carrying capacities of harbour porpoises (Phocoena phocoena) and grey seals (Halichoerus grypus). Read More

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November 2019

Effect of flow velocity on the growth, stress and immune responses of turbot (Scophthalmus maximus) in recirculating aquaculture systems.

Fish Shellfish Immunol 2019 Mar 29;86:1169-1176. Epub 2018 Dec 29.

Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; School of Marine Science and Environmental Engineering, Dalian Ocean University, Dalian, 116023, China. Electronic address:

Land-based recirculating aquaculture systems (RAS) are widely utilized for turbot (Scophthalmus maximus) culture. Flow velocity in the tank is essential to maintain water quality, conservation of energy and fish welfare. However, little is known about how turbot respond to different velocities in the long term. Read More

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cDNA cloning, characterization, and expression analysis of the Rac1 and Rac2 genes from Cynoglossus semilaevis.

Fish Shellfish Immunol 2019 Jan 3;84:998-1006. Epub 2018 Nov 3.

Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology Yellow Sea Fisheries Research Institute, CAFS, Qingdao, 266071, China; Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao, 266071, China. Electronic address:

Rac1 and Rac2, belonging to the small Rho GTPase family, play an important role during the immune responses. In this study, a Rac1 homolog (CsRac1) and a Rac2 homolog (CsRac2) were cloned from the Cynoglossus semilaevis. The full-length of CsRac1 and CsRac2 cDNA was 1219 bp and 1047 bp, respectively. Read More

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January 2019

Structural and functional conservation of half-smooth tongue sole Cynoglossus semilaevis RIP3 in cell death signalling.

Fish Shellfish Immunol 2018 Nov 31;82:573-578. Epub 2018 Aug 31.

Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fisheries Research, Qingdao, China. Electronic address:

Receptor interacting protein kinase 3 (RIP3) has emerged as an essential molecular regulator in human inflammation with accumulating evidence in vertebrates. However, the structure and functions of RIP3 in teleosts remains elusive. Here we identified one RIP3 homologue from half-smooth tongue sole Cynoglossus semilaevis, designated CsRIP3. Read More

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November 2018

Expression profiling and functional characterization of CD36 in turbot (Scophthalmus maximus L.).

Fish Shellfish Immunol 2018 Oct 29;81:485-492. Epub 2018 Jul 29.

Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China. Electronic address:

CD36 is a scavenger receptor, a type of membrane-bound receptors that characterized by recognizing a variety of ligands including endogenous proteins and pathogens. Here, we characterized CD36 gene in turbot, and its expression patterns in mucosal barriers following different bacterial infection, as well as microbial ligand binding ability and bacteriostatic activities. In current study, one SmCD36 gene was captured with a 1407 bp open reading frame (ORF). Read More

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October 2018

Effects of UV filter 4-methylbenzylidene camphor during early development of Solea senegalensis Kaup, 1858.

Sci Total Environ 2018 Jul 20;628-629:1395-1404. Epub 2018 Feb 20.

Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.

The inclusion of organic UV filters in personal care products (PCPs) has increased in recent years. 4-Methylbenzylidene camphor (4MBC) is one of the most used UV filters, and thus it is commonly found in aquatic ecosystems, with proved negative effects on aquatic organisms. Effects on early life stages of marine vertebrates are largely unknown. Read More

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The characterization and initial immune functional analysis of SCARA5 in turbot (Scophthalmus maximus L.).

Fish Shellfish Immunol 2018 Oct 11;81:242-249. Epub 2018 Jul 11.

Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China. Electronic address:

Scavenger receptors (SRs) are a group of membrane-bound receptors that could bind to a variety of ligands including endogenous proteins and pathogens. SRs have been recognized to play vital roles in innate immune response against pathogen infection in both vertebrates and invertebrates. In this regard, one SmSCARA5 gene was captured in turbot (Scophthalmus maximus). Read More

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October 2018

l-rhamnose-binding lectins (RBLs) in turbot (Scophthalmus maximus L.): Characterization and expression profiling in mucosal tissues.

Fish Shellfish Immunol 2018 Sep 8;80:264-273. Epub 2018 Jun 8.

Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China. Electronic address:

Rhamnose-binding lectin (RBL) were mostly identified from egg cortex and ovary cells from vertebrates and invertebrates, with the specific binding activities to l-rhamnose or d-galactose. Previously, we found that a RBL gene was dramatically down-regulated (-11.90 fold at 1 h, -48. Read More

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September 2018

Leptin and leptin receptor genes in tongue sole (Cynoglossus semilaevis): Molecular cloning, tissue distribution and differential regulation of these genes by sex steroids.

Comp Biochem Physiol A Mol Integr Physiol 2018 10 28;224:11-22. Epub 2018 May 28.

Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.

Leptin (Lep) is a key factor for the regulation of food intake and energy homeostasis in mammals. To date, a number of studies have provided evidence for the existence of multiple leptin genes in teleosts, but not much information is available in fish regarding the regulation of leptin genes by sex steriods. As a first step, two leptin genes (lepa and lepb) and a leptin receptor (lepr) gene were cloned from the half-smooth tongue sole (Cynoglossus semilaevis), a representative species of the order Pleuronectiformes. Read More

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October 2018

Identification of type A spermatogonia in turbot (Scophthalmus maximus) using a new cell-surface marker of Lymphocyte antigen 75 (ly75/CD205).

Theriogenology 2018 Jun 16;113:137-145. Epub 2017 Dec 16.

Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China. Electronic address:

Turbot (Schophthalmus maximus) is one of the most important economic marine flatfish species. However, due to rapid development of the industry, genetic resource recession has brought down the efficiency of aquaculture. Therefore, conservation of the genetic resource is increasingly demanded. Read More

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Expression and functional analysis of receptor-interacting serine/threonine kinase 2 (RIP2) in Japanese flounder (Paralichthys olivaceus).

Fish Shellfish Immunol 2018 Apr 9;75:327-335. Epub 2018 Feb 9.

Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China. Electronic address:

Being a key adaptor protein in NOD1/2 and NF-κB signaling pathways, receptor-interacting serine/threonine kinase 2 (RIP2) plays an important role in innate immune response in vertebrates. In this study, we identified and characterized the Paralichthys olivaceus RIP2 gene (PoRIP2). Phylogenetic, alignment, and genomic analysis of PoRIP2 were conducted to determine its conservation and evolutionary relationship with other RIP2 in vertebrates. Read More

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Diel and seasonal changes in the spatial behaviour of a soft-sediment fish (Solea senegalensis) inside a marine reserve.

Mar Environ Res 2018 Apr 31;135:82-92. Epub 2018 Jan 31.

Centre of Marine Sciences (CCMAR), University of the Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.

The protection provided by marine reserves directly depends on the short and long-term movement patterns of local organisms. Although there has been an increase in research assessing the behavioural patterns of fishes in reef-based habitats, there is still a paucity of studies addressing the benefits of marine protected areas (MPAs) for soft-sediment species. Here, we investigated both diel and seasonal shifts in spatial behaviour of the Senegalese sole, Solea senegalensis, within a recently-established marine reserve using long-term passive acoustic telemetry. Read More

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Expression pattern and functional analysis of R-spondin1 in tongue sole Cynoglossus semilaevis.

Gene 2018 Feb 16;642:453-460. Epub 2017 Nov 16.

Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003 Qingdao, Shandong, China. Electronic address:

R-spondin 1 (Rspo1) is a potential female-determining gene in mammals that could regulate the Wnt/β-catenin signaling pathway. The deletion of Rspo1 causes sex reversal in females. To investigate sexual determination and differentiation, we cloned and analyzed the Rspo1 gene in Cynoglossus semilaevis. Read More

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February 2018

The xenobiotic sensor PXR in a marine flatfish species (Solea senegalensis): Gene expression patterns and its regulation under different physiological conditions.

Mar Environ Res 2017 Sep 23;130:187-199. Epub 2017 Jul 23.

Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal. Electronic address:

The pregnane X receptor (PXR) is a nuclear receptor belonging to the NR1I sub-family and a known master regulator of xenobiotic metabolism. New roles have been recently proposed in mammals through its activation by vitamin K (VK) such as regulation of glucose metabolism, bone homeostasis, reproduction, neuronal development and cognitive capacities. In marine fish species little is known about PXR and its potential roles. Read More

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September 2017

Evolutionary conservation and expression of miR-10a-3p in olive flounder and rock bream.

Gene 2017 Sep 8;628:16-23. Epub 2017 Jul 8.

Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan 46241, Republic of Korea; Genetic Engineering Institute, Pusan National University, Busan 46241, Republic of Korea. Electronic address:

MicroRNAs (miRNAs) are small non-coding RNAs (ncRNAs) that mainly bind to the seed sequences located within the 3' untranslated region (3' UTR) of target genes. They perform an important biological function as regulators of gene expression. Different genes can be regulated by the same miRNA, whilst different miRNAs can be regulated by the same genes. Read More

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September 2017

Evaluating patterns and drivers of spatial change in the recreational guided fishing sector in Alaska.

PLoS One 2017 20;12(6):e0179584. Epub 2017 Jun 20.

School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.

Understanding the impacts of recreational fishing on habitats and species, as well as the social and ecological importance of place to anglers, requires information on the spatial distribution of fishing activities. This study documented long-term changes in core fishing areas of a major recreational fishery in Alaska and identified biological, regulatory, social, and economic drivers of spatial fishing patterns by charter operators. Using participatory mapping and in-person interviews, we characterized the spatial footprint of 46 charter operators in the communities of Sitka and Homer since the 1990s. Read More

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September 2017

Evolutionary Conservation of pou5f3 Genomic Organization and Its Dynamic Distribution during Embryogenesis and in Adult Gonads in Japanese Flounder Paralichthys olivaceus.

Int J Mol Sci 2017 Jan 23;18(1). Epub 2017 Jan 23.

College of Marine Life Science, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Qingdao 266003, China.

Octamer-binding transcription factor 4 (Oct4) is a member of POU (Pit-Oct-Unc) transcription factor family Class V that plays a crucial role in maintaining the pluripotency and self-renewal of stem cells. Though it has been deeply investigated in mammals, its lower vertebrate homologue, especially in the marine fish, is poorly studied. In this study, we isolated the full-length sequence of (), and we found that it is homologous to mammalian . Read More

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January 2017

Molecular characterization and quantification of estrogen receptors in turbot (Scophthalmus maximus).

Gen Comp Endocrinol 2018 02 10;257:38-49. Epub 2017 Jan 10.

Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China. Electronic address:

Estrogens regulate various reproductive processes via estrogen receptor (ER)-mediated signaling pathway in vertebrates. In this study, full-length sequences coding for ERα, ERβ1 and ERβ2 were isolated from female turbot (Scophthalmus maximus) by homology cloning and a strategy based on rapid amplification of cDNA end-polymerase chain reaction (RACE-PCR). The nucleotide and amino acid sequences of turbot ERs showed high homologies with the corresponding sequences of other fish species and significant homology with the Japanese flounder (Paralichthys olivaceus) and the European sea bass (Dicentrarchus labrax). Read More

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February 2018

Movements of a deep-water fish: establishing marine fisheries management boundaries in coastal Arctic waters.

Ecol Appl 2017 04 13;27(3):687-704. Epub 2017 Mar 13.

Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, N9B 3P4, Canada.

Management boundaries that define populations or stocks of fish form the basis of fisheries planning. In the Arctic, decreasing sea ice extent is driving increasing fisheries development, highlighting the need for ecological data to inform management. In Cumberland Sound, southwest Baffin Island, an indigenous community fishery was established in 1987 targeting Greenland halibut (Reinhardtius hippoglossoides) through the ice. Read More

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