筛选
科学数据
统计数据
共检索到33条 ,权限内显示50条;
Data from: Sperm head abnormalities are more frequent in songbirds with more helical sperm: A possible trade-off in sperm evolution
- 负责人：
- St?stad, Hanna
- DOI：
- doi:10.5061/dryad.1mj39tf
- 摘要：
- susceptibility to sperm abnormalities could represent such a constraint in songbirds, a group characterised by a distinctive helical sperm head shape. Spe
Data from: Postcopulatory sexual selection is associated with accelerated evolution of sperm morphology
- 负责人：
- DOI：
- doi:10.5061/dryad.qb2c7
- 摘要：
- . Spermatozoa exhibit remarkable variability in size and shape, and studies report a correlation between sperm morphology (sperm length and shape
Data from: Sperm head morphology is associated with sperm swimming speed: a comparative study of songbirds using electron microscopy
- 负责人：
- St?stad, Hanna Nyborg
- 关键词：
- Structure-function relationships Sexual selection Sperm competition Sperm shape Scanning electron microscopy
- DOI：
- doi:10.5061/dryad.341kj02
- 摘要：
- shape, however, remains unknown. Using scanning electron microscopy, we quantified inter- and intra-specific variation in sperm head morphology across 36
Data from: Sperm blocking is not a male adaptation to sperm competition in a parasitoid wasp
- 负责人：
- 关键词：
- sperm competition;polyandry;local mate competition;sex allocation;post-copulatory sexual selection
- DOI：
- doi:10.5061/dryad.23f0c
- 摘要：
- the mechanics of processing sperm in this species, which are likely shaped by selection on female reproductive morphology for adaptive sex allocation.
Data from: Phenotypic plasticity in genitalia: baculum shape responds to sperm competition risk in house mice
- 负责人：
- DOI：
- doi:10.5061/dryad.57v6627
- 摘要：
- size and shape. Independent of variation in body size, males maintained under risk of sperm competition had a relatively thicker and more distally extended baculum
Data from: Experimental evolution reveals that sperm competition intensity selects for longer, more costly sperm
- 负责人：
- 关键词：
- Mating Systems;reproductive strategies;sexual selection;Experimental evolution;Tribolium castaneum
- DOI：
- doi:10.5061/dryad.22rh6
- 摘要：
- for spermatogenesis in the testis. Here, we empirically examine how sperm competition shapes sperm size, after more than 77 generations of experimental selection
Data from: Sperm allocation in relation to female size in a semelparous salmonid
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.p11s3
- 摘要：
- allocation can be expected to be a powerful selective agent that shapes the male reproductive success. We quantitatively investigated sperm allocation patterns in chum salmon
Data from: Ejaculate evolution in external fertilizers: influenced by sperm competition or sperm limitation?
- 负责人：
- DOI：
- doi:10.5061/dryad.t5jp7
- 摘要：
- The evolution of sperm quality and quantity is shaped by various selective processes, with sperm competition generally considered the primary
Data from: A species-specific multigene family mediates differential sperm displacement in Drosophila melanogaster
- 负责人：
- DOI：
- doi:10.5061/dryad.j1t17
- 摘要：
- relevance in shaping male traits, the genetic mechanisms underlying sperm competition are poorly understood. A recently originated multigene family spe
Data from: Sperm pre-fertilization thermal environment shapes offspring phenotype and performance
- 负责人：
- 关键词：
- Coregonus lavaretus
- DOI：
- doi:10.5061/dryad.25rg2h3
- 摘要：
- ×male interaction). Together these results indicate that sperm pre-fertilization thermal environment shapes offspring phenotype and post-ha
