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The importance of color and body size for reproductive decision making by males and females of the giant river prawn, Macrobrachium rosenbergii (de Man, 1879) (Decapoda, Caridea, Palaemonidae).
Behav 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.
View Article and Find Full Text PDFCauses and consequences of divorce in a long-lived socially monogamous bird.
Ecol Lett
December 2024
Groningen Institute of Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands.
In socially monogamous species, sexual selection not only depends on initial mate choice but also mate switching. To date, studies lack assessment of (1) differences between passive (widowhood) and active (divorce) mate switching, (2) longer term fitness consequences (beyond the season post-divorce) and (3) how age masks reproductive costs and benefits of divorce. We investigated causes and short- and long-term consequences of mate switching and their age dependence using longitudinal data on Seychelles warblers (Acrocephalus sechellensis).
View Article and Find Full Text PDFFear of mating out (FOMO): voyeurism does not increase mating propensity in fruit flies.
Sci Rep
December 2024
Department of Biology, University of Oxford, 11a Mansfield Road, Oxford, OX1 3SZ, UK.
Mate availability and social information can influence mating behaviour in both males and females. Social information obtained from conspecifics can influence mate choice, particularly shown by studies on mate choice copying. However, the role of directly observing conspecific mating on mating behaviour has been less explored.
View Article and Find Full Text PDFmosquitoes are vectors of several viruses of major public health importance, and many new control strategies target mating behaviour. Mating in this species occurs in swarms characterised by male scramble competition and female choice. These mating swarms have a male-biased operational sex ratio, which is expected to generate intense competition among males for mating opportunities.
View Article and Find Full Text PDFLong-sperm precedence and other cryptic female choices in Drosophila melanogaster.
Evolution
December 2024
Department of Biology, Indiana University, Bloomington, Indiana.
Females that mate multiply make postmating choices about which sperm fertilize their eggs (cryptic female choice); however, the male characteristics they use to make such choices remain unclear. In this study, we sought to understand female sperm use patterns by evaluating whether Drosophila melanogaster females adjust sperm use (second male paternity) in response to four main factors: male genotype, male courtship effort, male pheromone alteration, and male postmating reproductive morphology. Our experiment was replicated across four different D.
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