Results 21 to 30 of about 6,295 (131)
Thirty Years of the Biology of Spermatozoa: The Rise and Future of an Evolutionary Paradigm
Ecology and Evolution, Volume 16, Issue 1, January 2026.A sperm bundle taken from the seminal vescicles of the dung beetle, Onthophagus taurus. Image credit: Leigh W. Simmons. ABSTRACT In the early 1970s, Geoff Parker recognised that because females frequently mate with multiple males, competition for fertilizations will impose significant sexual selection on males and their ejaculates.
Leigh W. Simmons
wiley +1 more source
Ecology and Evolution, Volume 15, Issue 12, December 2025.We exposed male house mice (fathers) to high‐male or high‐female density conditions during their sexual development and quantified the sperm sex ratio of their sons. Our analyses revealed that the sons of fathers reared under high‐male density conditions, produced, on average, higher numbers of daughter‐producing sperm compared to sons of fathers ...
Renée C. Firman +1 more
wiley +1 more source
Sexual conflict as a constraint on asexual reproduction: an empirical review
Biological Reviews, Volume 100, Issue 6, Page 2681-2706, December 2025.ABSTRACT Theory predicts that facultatively asexual animals, which can leverage the advantages of both sexual and asexual reproduction, should outcompete obligately sexual and obligately asexual animals. Yet, paradoxically, obligate sexual reproduction predominates in many animal lineages, while the most flexible form of facultative asexuality (i.e ...
Daniela Wilner +2 more
wiley +1 more source
Comparación de los contratos de arrendamiento ingleses con los españoles [PDF]
, 2006 Dotzenes Jornades de Foment de la Investigació de la FCHS (Any 2006 ...
Nebot, Aina
core
Local Government Proliferation and Fiscal Efficiency: Evidence From Ghana
Growth and Change, Volume 56, Issue 4, December 2025.ABSTRACT In many active decentralized nations in the developing world, the number of sub‐national administrative units has continued to increase over the past few decades. In most cases, this churning of more decentralized units does not go without contestation, with critics arguing that they are not done in the true spirit of decentralization but ...
Zurikanen Iddrisu +3 more
wiley +1 more source
Kerangka konseptual keadilan Islam dalam pelaksanaan penilaian prestasi [PDF]
, 2014 Memanipulasi, mempolitik dan berlakunya pilih kasih adalah antara isu-isu berkaitan keadilan organisasi dalam pelaksanaan penilaian prestasi yang telah lama dibincangkan oleh ahli akademik dan pengamal organisasi.Mereka sedar aspek keadilan harus diberi
Yusof, Ab. Aziz
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Human Brain Mapping, Volume 46, Issue 16, November 2025.This study combined smartphone‐based ecological momentary assessment (EMA) and fixel‐based analysis (FBA) of diffusion MRI data to examine intraindividual variability (IIV) in cognitive performance and its neural correlates in chronic mild TBI. Our findings revealed persistent cognitive instability linked to daily symptom fluctuations and structural ...
Jake Burnett +5 more
wiley +1 more source
Male mate‐choice copying: a neglected aspect of sexual selection
Oikos, Volume 2025, Issue 11, November 2025.Mate‐choice copying occurs when the choices of others influence an individual's mating preferences. While this behavior has been observed across various species, most research has focused on female copying behavior. However, male mate‐choice copying warrants independent attention due to the distinct benefits and costs it entails for males compared to ...
Kimberley Hanna +2 more
wiley +1 more source
Abundance Trends of Pacific Salmon During a Quarter Century of ESA Protection
Fish and Fisheries, Volume 26, Issue 6, Page 1087-1106, November 2025.ABSTRACT Between 1989 and 2007, 28 Distinct Population Segments (DPS) of Pacific salmon (Oncorhynchus spp.) spawning in rivers in California and the Pacific Northwest (Oregon, Washington, Idaho) were listed (protected) under the US Endangered Species Act (ESA).
Michael J. Ford +17 more
wiley +1 more source
Postcopulary sexual selection increases ATP content in rodent spermatozoa [PDF]
, 2016 Sperm competition often leads to increase in sperm numbers and sperm quality, and its effects on sperm function are now beginning to emerge. Rapid swimming speeds are crucial for mammalian spermatozoa, because they need to overcome physical barriers in ...
Gomendio, Montserrat +5 more
core +1 more source