A new evolutionary model of mate choice copying, published in PLOS Biology, aims to reconcile mismatches between theory and data by proposing that juvenile females mistakenly imprint on male phenotypes that were not in fact preferred by the female they copied.
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http://dx.doi.org/10.1371/journal.pbio.3002321 | DOI Listing |
Insects
November 2024
Laboratorio de Biología Reproductiva y Evolución, Instituto de Diversidad y Ecología Animal (IDEA), CONICET-UNC, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba Av. Vélez Sarsfield 299, Córdoba X5000, Argentina.
Seasonal reproductive dynamics and senescence have profound impacts on male fertility, yet these processes remain understudied in scorpions. This study investigates how reproductive parameters-such as testicular mass, sperm quantity, and viability-change over the course of the reproductive season in males. We found that early-season males exhibited higher sperm quality and testicular mass compared to their older counterparts, suggesting that senescence, rather than reproductive effort, drives the decline in sperm viability.
View Article and Find Full Text PDFJBI Evid Synth
January 2025
University of Gondar, College of Medical and Health Sciences, Gondar, Ethiopia.
Objective: This review will explore the perinatal care experiences of women living with disability in African countries.
Introduction: In many African countries, most women with disability face stigma and discrimination. They are also at risk of unwanted pregnancy and sexually transmitted diseases due to gender-based violence and sexual abuse.
AIDS Res Ther
January 2025
Department of Mathematics, Physics and Informatics, Mkwawa University College of Education, Iringa, Tanzania.
Introduction: The introduction of the HIV self-test kit in the early 2000s was a major breakthrough in combating HIV. This study determines the social demographic and sexual behaviour driving the use of HIV self-test kits.
Method: The study used secondary data obtained from Tanzania DHS-MIS 2022.
Comp Biochem Physiol A Mol Integr Physiol
January 2025
Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Guangzhou 510380, China. Electronic address:
The zig-zag eel exhibits both sexual dimorphism and sex reversal, making it crucial to understand the mechanisms of sex determination and differentiation. Additionally, the wild populations of the zig-zag eel are significantly declining, emphasizing the need for urgent conservation efforts. In this study, we identified 7 Dmrt, 62 HMG-box, and 73 TGF-β family members in the zig-zag eel genome.
View Article and Find Full Text PDFBehav Processes
January 2025
Laboratory of Sensory Ecology, Department of Physiology & Behavior, Biosciences Center, Federal University of Rio Grande do Norte, Natal-RN, Brazil. Electronic address:
The selection and expression of conspicuous colorations in animals is often related to anti-predation strategies and sociosexual communication. The giant river prawn, Macrobrachium rosenbergii (de Man, 1879) is a species with three male morphotypes that vary in claws' coloration and the size of the animals. It has been suggested that male reproductive quality might be associated to their coloration, but evidence is still conflicting.
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