Results 121 to 130 of about 1,124,248 (284)
Journal of Biological Research - Thessaloniki, 2019 Background Postcopulatory sexual selection is very important in species with reproductive strategies that involve multiple mating and prolonged sperm storage.
Alexandra Staikou +1 more
doaj +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
Intergenerational response to sperm competition risk in an invasive mammal. [PDF]
Proc Biol Sci, 2023 Firman RC +3 more
europepmc +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
Male responses to sperm competition risk associated with increased macronutrient intake and reduced lifespan. [PDF]
Biol Lett, 2023 Simmons LW, Chan HL.
europepmc +1 more source
Extraocular Photoreception in Optic Lobes, Suckers, and Skin of Octopus vulgaris
Integrative Zoology, EarlyView.Evidence of extra‐ocular photoreception in Octopus vulgaris (a) Diagram of the O. vulgaris different tissues considered: SPB, sucker proximal big; SPL, sucker proximal large; SM, sucker medium; SD, sucker distal; SK, skin; OL, optic lobes; RT, retina; (b‐d) Gene expression analysis of Ov‐GRK1 (red), Ov‐retinochrome (green), Ov‐rhodopsin (blue) mRNA ...
Valeria Maselli +7 more
wiley +1 more source
Sperm competition increases sperm production and quality in Cataglyphis desert ants. [PDF]
Proc Biol Sci, 2023 Degueldre F, Aron S.
europepmc +1 more source
Integrative Zoology, EarlyView.Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer +3 more
wiley +1 more source
A predominant role of genotypic variation in both expression of sperm competition genes and paternity success in Drosophila melanogaster. [PDF]
Proc Biol Sci, 2023 Patlar B, Fulham L, Civetta A.
europepmc +1 more source
The Australian Hydromyine Rodents—Their Interspecific Diversity and Reproductive Biology: A Review
Integrative Zoology, EarlyView.There are two major groups, the Rattus species and the Hydromyini, in Australia. Clearly, the hydromyine rodents, unlike the Rattus genus, exhibit a diverse array of reproductive biological traits in both males and females, the full evolutionary significance of which has yet to be ascertained.
William G. Breed +2 more
wiley +1 more source