Equine Veterinary Journal, EarlyView.Abstract Background Persistent breeding‐induced endometritis (PBIE) is a common reason for mares failing to establish pregnancy. Objective To examine the hypothesis that advancing mare age and embryo donor status predispose to PBIE and compromise fertility.
Tom Stout +3 more
wiley +1 more source
Sperm Competition Risk and Sexual Coercion Predict Copulatory Duration in Humans
Evolutionary Psychology, 2015 A man whose romantic partner is sexually unfaithful is at risk of sperm competition and cuckoldry—unwitting investment in offspring to whom he is genetically unrelated.
Nicole Barbaro +2 more
doaj +1 more source
Statistical methods for detecting genes associated with sperm competition in natural populations of Drosophila, using blocks of tightly linked single nucleotide polymorphisms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Statistics at Massey University, Albany, New Zealand [PDF]
, 2007 The purpose of the project is to develop statistical methods for detecting genes associated with sperm competition in natural populations of Drosophila (fruit flies). The flies' genotype information given by Fiumera et al.
Werner, Lillian Li
core
Casanovas are liars : behavioral syndromes, sperm competition risk, and the evolution of deceptive male mating behavior in live-bearing fishes [version 2; referees: 2 approved, 1 approved with reservations] [PDF]
, 2013 Male reproductive biology can by characterized through competition over mates as well as mate choice. Multiple mating and male mate choice copying, especially in internally fertilizing species, set the stage for increased sperm competition, i.e., sperm ...
Bierbach, David +5 more
core +2 more sources
Gamete evolution and sperm numbers: sperm competition versus sperm limitation [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2014 Both gamete competition and gamete limitation can generate anisogamy from ancestral isogamy, and both sperm competition (SC) and sperm limitation (SL) can increase sperm numbers. Here, we compare the marginal benefits due to these two components at any given population level of sperm production using the risk and intensity models in sperm economics. We
Geoff A, Parker, Jussi, Lehtonen
openaire +2 more sources
Feminist Anthropology, EarlyView.Abstract This article examines how mobility restrictions imposed by governments during the COVID‐19 pandemic intensified reproductive and mobility injustices. It traces shifting configurations of privilege and inequality within marginalized groups whose reproductive desires remain legally and socially unrecognized.
Sara L. Friedman
wiley +1 more source
تاکسونومی و بیوسیستماتیک, 2013 In this research, the variation of spermatozoa traits among three male rainbow trout (Oncorhynchus mykiss) was used to examine how the relative influences of sperm density and duration of sperm motility account for sperm competition success.
Hossein Moradyan +3 more
doaj
Sperm Morphology in Neotropical Primates
Animals, 2019 The morphological and morphometric characterization of spermatozoa has been used as a taxonomic and phylogenetic tool for different species of mammals. We evaluated and compared the sperm morphometry of five neotropical primate species: Alouatta caraya ...
Eliana R. Steinberg +5 more
doaj +1 more source
Sperm traits negatively covary with size and asymmetry of a secondary sexual trait in a freshwater crayfish. [PDF]
PLoS ONE, 2012 In species where females mate promiscuously, the reproductive success of males depends both on their ability to acquire mates (pre-copulatory sexual selection) and ability of their ejaculates to outcompete those of other males (post-copulatory sexual ...
Paolo Galeotti +5 more
doaj +1 more source
Polyandrous females avoid costs of inbreeding [PDF]
, 2002 Why do females typically mate with more than one male? Female mating patterns have broad implications for sexual selection, speciation and conflicts of interest between the sexes, and yet they are poorly understood. Matings inevitably have costs, and for
A Keil +31 more
core +1 more source