Psychological and physiological adaptations to sperm competition in humans [PDF]
, 2005 Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Nicholas Pound +5 more
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Sperm motility activation, sperm heterogeneity and sperm-female tract interactions in Bennett's wallaby (Macropus rufogriseus rufogriseus) [PDF]
, 2011 Sperm–oviduct interactions in Bennett’s wallaby (Macropus rufogriseus rufogriseus) were investigated using in vitro cocultures of cauda epididymal spermatozoa and oviducal epithelial cells.
Institute of Zoology +7 more
core +1 more source
Early evolutionary history of the seed
Biological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
A C. elegans Sperm TRP Protein Required for Sperm-Egg Interactions during Fertilization [PDF]
, 2003 Fertilization, a critical step in animal reproduction, is triggered by a series of specialized sperm-egg interactions. However, the molecular mechanisms underlying fertilization are not well understood. Here, we identify a sperm-enriched C.
Xu, X.-Z.Shawn, Sternberg, Paul W.
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Competent Non‐Native Alternative Host Reduces Infection Success in a Generalist Parasite
Ecology and Evolution, Volume 16, Issue 6, June 2026.In this study, we experimentally assessed how the addition of a non‐native alternative host affects the infection success of the larval generalist trematode, Diplostomum pseudospathaceum, in fish intermediate hosts. Our results demonstrate that the presence of alternative hosts, especially the non‐native ones, can reduce parasite transmission through ...
Markéta Ondračková +3 more
wiley +1 more source
Variation in sperm whale (Physeter macrocephalus) coda vocalizations and social structure in the North Atlantic Ocean [PDF]
, 2009 This study aimed at complementing studies of sperm whale social and vocal behaviour that were restricted to the Pacific Ocean. The characteristic multi-pulsed structure of sperm whale clicks allows for estimation of whales' size from measurements of ...
Antunes, Ricardo
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Biosynthesis and expression of zona pellucida glycoproteins in mammals [PDF]
, 2001 The zona pellucida (ZP) is an extracellular matrix surrounding the oocyte and the early embryo that exerts several important functions during fertilization and early embryonic development.
Töpfer-Petersen, E. +2 more
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Liminal Bioethics for Liminal Statuses: A New Method for Analysing Novel Biological Entities
Bioethics, Volume 40, Issue 5, Page 453-462, June 2026.ABSTRACT Novel biological entities such as cell lines and organoids do not typically fit into established conceptual categories, such as ‘human’ or ‘nonhuman’, ‘gift’ or ‘property’. This makes developing robust ethical principles or policy solutions difficult.
Michael Wee, Ilina Singh
wiley +1 more source
The Heritability of Mating Behaviour in a Fly and Its Plasticity in Response to the Threat of Sperm Competition [PDF]
, 2014 Phenotypic plasticity is a key mechanism by which animals can cope with rapidly changeable environments, but the evolutionary lability of such plasticity remains unclear.
Price, TA +16 more
core +1 more source
Journal of the World Aquaculture Society, Volume 57, Issue 3, June 2026.Abstract This study was performed to determine the efficiency of various hormones on the ovulation of knife fish, Notopterus notopterus, in captivity. In total, 81 fish were grouped into nine treatments with three replicates, maintaining the sex ratio 1:2 (male to female).
Manish Devkota +3 more
wiley +1 more source