Results 51 to 60 of about 1,104,726 (307)
Rival seminal fluid induces enhanced sperm motility in a polyandrous ant
BMC Evolutionary Biology, 2018 Background Promiscuous mating and sperm competition often induce arms races between the sexes with detrimental outcomes for females. However, ants with multiply-inseminated queens have only a single time-window for sperm competition and queens are ...
Joanito Liberti +2 more
doaj +1 more source
Frontiers in Ecology and Evolution, 2023 Kin selection on one hand, and gamete interactions in post-ejaculatory sexual selection on the other are two major research themes that have risen to prominence over the past half century and have simultaneously developed into central fields of research ...
Lauri Myllymaa, Jussi Lehtonen
doaj +1 more source
Bayesian Sperm Competition Estimates
Genetics, 2003 Abstract We introduce a Bayesian method for estimating parameters for a model of multiple mating and sperm displacement from genotype counts of brood-structured data. The model is initially targeted for Drosophila melanogaster, but is easily adapted to other organisms. The method is appropriate for use with field studies where the number
Beatrix, Jones, Andrew G, Clark
openaire +2 more sources
Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms
Advanced Materials, EarlyView.This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun +4 more
wiley +1 more source
Sperm removal during copulation confirmed in the oldest extant damselfly, Hemiphlebia mirabilis [PDF]
PeerJ, 2016 Postcopulatory sexual selection may favour mechanisms to reduce sperm competition, like physical sperm removal by males. To investigate the origin of sperm removal, I studied the reproductive behaviour and mechanisms of sperm competition in the only ...
Adolfo Cordero-Rivera
doaj +2 more sources
A sexual network approach to sperm competition in a species with alternative mating tactics [PDF]
, 2014 Danilo G. Muniz +3 more
openalex +2 more sources
Evolution Letters, 2017 It is the differences between sperm and eggs that fundamentally underpin the differences between the sexes within reproduction. For males, it is theorized that widespread sperm competition leads to selection for investment in sperm numbers, achieved by ...
Joanne L Godwin +6 more
semanticscholar +1 more source
Advanced Science, EarlyView.Genome‐wide, high‐resolution profiling of hydroxymethylation in mouse SCNT embryos reveals a transient, allele‐symmetric 5hmC reprogramming pattern distinct from natural embryos, with X‐chromosomes and imprinting control regions resistant to proper remodeling.
Zeming Xiang +9 more
wiley +1 more source
The bold and the sperm: positive association between boldness and sperm number in the guppy [PDF]
Royal Society Open Science, 2019 Assessing the consequences of personality traits on reproductive success is one of the most important challenges in personality studies and critical to understand the evolutionary implications of behavioural variability among animals.
Clelia Gasparini +2 more
doaj +1 more source
Advanced Science, EarlyView.IGF‐1 deficiency underlies poor ovarian response (POR), as reduced levels in follicular fluid and granulosa cells impair antral follicle formation and compromise reproductive outcomes. Including IGF‐1 as a biomarker significantly enhances the accuracy of models predicting both PORrisk and pregnancy success.
Zhu Hu +9 more
wiley +1 more source