Results 101 to 110 of about 19,844 (294)
Journal of the Royal Anthropological Institute, EarlyView.Amid the general sense of worry that large language models will soon drown out human voices, some researchers are optimistic that machine learning will allow humans to listen to and understand animal voices to an unprecedented extent. As part of a broader project aimed at interspecies communication, a loosely connected set of animal behaviourists, AI ...
Courtney Handman
wiley +1 more source
Sperm Competition and the Function of Masturbation in Japanese Macaques (Macaca fuscata)
, 2001 Male masturbation or sexual-auto stimulation is well documented in humans. This study dealt with the occurrence of masturbation in non-human primates in general, and in Japanese macaques (Macaca fuscata) in particular, from the perspective of ...
Thomsen, Ruth
core
The evolution of large testes: Sperm competition or male mating rate?
, 2011 A positive relationship across species between the extent to which females mate with more than one male and relative testes mass has been demonstrated in a wide range of vertebrate taxa and certain insects.
Parker, Darren James +2 more
core +1 more source
Reproductive Challenges of the Ageing Female: A Comprehensive Narrative Review
BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.ABSTRACT Changes in societal norms over the last few decades have resulted in novel family planning trends, notably delayed childbearing and increased maternal age at the birth of the first child. Despite advances in reproductive medicine, ageing poses significant challenges.
Sofia Bitzika +6 more
wiley +1 more source
A review on studies of behavioural ecology of Centrobolus (Diplopoda, Spirobolida, Pachybolidae) in southern Africa [PDF]
Arthropods, 2019 Forty-two studies on fire millipedes are reviewed in which mechanisms of selection; sperm competition and cryptic female choice were studied. Approaches to: (1) quantify size dimorphism and find the selection pressures operating on the sexes, (2 ...
Mark Cooper
doaj
BMC Evolutionary Biology, 2018 Background Sexual selection continues after copulation via either sperm competition or cryptic female choice, and favors sperm traits that maximize sperm competitiveness.
Alfonso Rojas Mora +3 more
doaj +1 more source
, 2011 1. Polyandry is common in insects. Nevertheless, the evolutionary causes and consequences of this phenomenon remain contentious, in part because of a lack of information about natural mating rates and the fact that most post-copulatory processes are ...
Bussiere, Luc +7 more
core +1 more source
Iflaviruses in arthropods: when small is mighty
Insect Science, EarlyView.Many arthropod species harbor iflaviruses, which often cause covert (asymptomatic) infections, but may still affect host fitness. We review the impact of iflaviruses on arthropod fitness, immunity, behaviour as well as the iflavirus’ host range, transmission, tissue tropism and the interactions with other microorganisms within arthropods.
Annamaria Mattia +3 more
wiley +1 more source
The adaptive function of masturbation in a promiscuous African ground squirrel.
PLoS ONE, 2010 Studies of animal mating systems increasingly emphasize female multiple mating and cryptic sexual selection, particularly sperm competition. Males under intense sperm competition may manipulate sperm quantity and quality through masturbation, which could
Jane M Waterman
doaj +1 more source