尽管在同情中存在遗传隔离,但蝙蝠和人类相关的常见病虫 (Cimex lectularius L.) 之间没有进化后交配的生殖障碍
Markéta Sasínková1, Ondřej Balvín1, Jana Vandrovcová2
1Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 21, Prague 6, Czech Republic.
Frontiers in zoology
|November 11, 2023
概括
常见的床 (Cimex lectularius) 显示出不同的人类 (HL) 和蝙蝠 (BL) 血统. 尽管精子储存和后代的健康状况有差异,但在这些对称的床种群之间没有发现后交配的生殖隔离.
科学领域:
- 进化生物学 进化生物学
- 昆虫生态学 昆虫生态学
- 生殖生物学 生殖生物学
背景情况:
- 常见的床虫 (Cimex lectularius) 存在于不同的人类 (HL) 和蝙蝠 (BL) 血统中.
- 这些谱系共存,这表明了潜在的生殖隔离机制.
研究的目的:
- 为了研究人类和蝙蝠床虫血统之间的交配后生殖隔离.
- 评估精子储存,产卵率和后代适应性在生殖隔离中的作用.
主要方法:
- 在三个HL和三个BL种群之间进行了相互交叉.
- 使用常见的花园血饮食,并排除了结合前隔离.
- 在交配后测量了精子储存,产卵率和后代的健康状况.
主要成果:
- 蝙蝠血统 (BL) 与人类血统 (HL) 相比,具有更高的精子储存能力.
- 在血统之间观察到精子功能,生育能力和后代健康的显著差异.
- 在线和跨线交叉之间没有发现卵数或后代健康的差异.
结论:
- 观察到的精子储存和产卵率的差异并没有导致生殖隔离.
- 特定种群的精子功能变化也没有导致生殖隔离.
- 这项研究没有发现HL和BL血统之间的交配后生殖隔离的证据,这使得在同情中保持遗传差异化是一个悬而未决的问题.
相关概念视频
01:17What is a Species?
44.1K
Overview
44.1K
00:58Symbiosis
28.3K
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
28.3K
02:29Hybrid Zones
17.0K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
17.0K