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An introduced host plant alters circadian activity patterns of a rhinoceros beetle.

Ecology 2021 Apr 13:e03366. Epub 2021 Apr 13.

Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-City, Yamaguchi, Japan.

The rhinoceros beetle Trypoxylus dichotomus (Coleoptera, Scarabaeidae, Dynastinae) feeds on the sap of trees. The main original host of the Japanese subspecies T. d. Read More

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The Role of Mating-relevant Factors in the Perpetration of Digital Dating Abuse.

J Interpers Violence 2021 Apr 13:8862605211004103. Epub 2021 Apr 13.

University of Wolverhampton, UK.

Previous research has explored offline intimate partner violence from an evolutionary perspective, primarily focusing on the role of individual differences in perpetration and victimization. However, a current form of intimate partner violence is digital dating abuse, which involves abuse toward a romantic partner, occuring online through the use of electronic communication technology. This form of abuse differs from offline abuse, in that physical proximity is not required. Read More

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Paternal and maternal effects in a mosquito: A bridge for life history transition.

J Insect Physiol 2021 Apr 9:104243. Epub 2021 Apr 9.

Florida Medical Entomology Laboratory, Entomology and Nematology Department, Institute of Food and Agricultural Sciences, University of Florida, Vero Beach, FL 32962, USA. Electronic address:

Parental (transgenerational) effects occur when the conditions experienced by a mother or father contribute to offspring phenotype. Here we show that parental larval diet in mosquitoes, Aedes aegypti, results in differential allocation of resources in offspring of parents depending on the nutritional condition (quality) of their mate. Maternal effects influenced the number of eggs produced by females as well as their lipid investment. Read More

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Sex, males, and hermaphrodites in the scale insect Icerya purchasi.

Evolution 2021 Apr 12. Epub 2021 Apr 12.

Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT, United Kingdom.

Androdioecy (the coexistence of males and hermaphrodites) is a rare mating system for which the evolutionary dynamics are poorly understood. Here we investigate the cottony cushion scale, Icerya purchasi, one of only three reported cases of androdioecy in insects. In this species, female-like hermaphrodites have been shown to produce sperm and self-fertilize. Read More

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Hero Turned Villain: Identification of Components of the Sex Pheromone of the Tomato Bug, Nesidiocoris tenuis.

J Chem Ecol 2021 Apr 12. Epub 2021 Apr 12.

NIAB EMR, New Road, East Malling, Kent, UK.

Nesidiocoris tenuis (Reuter) (Heteroptera: Miridae) is a tropical mirid bug used as a biocontrol agent in protected crops, including tomatoes. Although N. tenuis predates important insect pests, especially whitefly, it also causes damage by feeding on tomato plants when prey populations decline, resulting in significant economic losses for growers. Read More

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Compensation for the absence of the catalytically active half of DNA polymerase ε in yeast by positively selected mutations in CDC28.

Genetics 2021 Apr 12. Epub 2021 Apr 12.

Department of Genetics and Biotechnology, Saint-Petersburg State University, Saint-Petersburg, Russia, 199034.

Current eukaryotic replication models postulate that leading and lagging DNA strands are replicated predominantly by dedicated DNA polymerases. The catalytic subunit of the leading strand DNA polymerase ε, Pol2, consists of two halves made of two different ancestral B-family DNA polymerases. Counterintuitively, the catalytically active N-terminal half is dispensable, while the inactive C-terminal part is required for viability. Read More

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Differential Viral Distribution Patterns in Reproductive Tissues of and Drones.

Front Vet Sci 2021 24;8:608700. Epub 2021 Mar 24.

Bee Protection Laboratory, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.

Honeybee drones are male bees that mate with virgin queens during the mating flight, consequently transferring their genes to offspring. Therefore, the health of drones affects the overall fitness of the offspring and ultimately the survivability of the colony. Honeybee viruses are considered to be a major threat to the health of honeybees. Read More

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Multigenerational impacts of gestational bisphenol A exposure on the sperm function and fertility of male mice.

J Hazard Mater 2021 Apr 1;416:125791. Epub 2021 Apr 1.

Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea. Electronic address:

Growing evidence suggests that developmental exposure to bisphenol A (BPA)-a synthetic endocrine disruptor-causes atypical reproductive phenotypes that may persist for generations. However, the precise mechanism(s) by which BPA causes these adverse consequences is unclear. Here, pregnant female mice were orally exposed to 50 μg, 5 mg, and 50 mg BPA/kg body weight (bw)/day from 7 to 14 days of gestation. Read More

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A single amino acid substitution in PRKDC is a determinant of sensitivity to Adriamycin-induced renal injury in mouse.

Biochem Biophys Res Commun 2021 Apr 8;556:121-126. Epub 2021 Apr 8.

Laboratory of Laboratory Animal Science and Medicine, School of Veterinary Medicine, Kitasato University, Towada, 034-8628, Japan. Electronic address:

Adriamycin (ADR)-induced nephropathy is frequently utilized in rodent models of podocytopathy. However, the application of this model in mice is limited to a few strains, such as BALB/c mice. The most commonly used mouse strain, C57BL/6 (B6), is resistant to ADR-induced nephropathy, as are all mouse strains with a B6 genetic background. Read More

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Combined transcriptomic, proteomic and genomic analysis identifies reproductive-related proteins and potential modulators of female behaviors in Spodoptera litura.

Genomics 2021 Apr 8. Epub 2021 Apr 8.

Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China. Electronic address:

The common cutworm, Spodoptera litura, is a polyandrous moth with high reproductive ability. Sexual reproduction is a unique strategy for survival and reproduction of population in this species. However, to date available information about its reproductive genes is rare. Read More

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Role of dietary modifications in the management of type 2 diabetic complications.

Pharmacol Res 2021 Apr 7:105602. Epub 2021 Apr 7.

Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India. Electronic address:

Diabetes is a chronic metabolic disorder with a high rate of morbidity and mortality. Insufficient insulin secretion and insulin action are two major causes for the development of diabetes, which is characterized by a persistent increase in blood glucose level. Diet and sedentary life style play pivotal role in development of vascular complications in type 2 diabetes. Read More

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Molecular and neural mechanisms regulating sexual motivation of virgin female Drosophila.

Cell Mol Life Sci 2021 Apr 10. Epub 2021 Apr 10.

Graduate School of Science, Nagoya University, Nagoya, Aichi, 464-8602, Japan.

During courtship, multiple information sources are integrated in the brain to reach a final decision, i.e., whether or not to mate. Read More

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