Multiplicity of sperm receptacles for securing the offspring genetic variability in a pelagic squid
Multiplicity of sperm receptacles for securing the offspring genetic variability in a pelagic squid
复制标题
用于确保远洋乌贼后代遗传变异性的多个精子容器
DOI：
10.1007/s00227-023-04194-4
复制
发表时间：
2023
期刊：
影响因子：
2.4
通讯作者：
Iwata Yoko
中科院分区：
文献类型：
--
作者：
Sato Noriyosi;Ono Hiroki;Hirohashi Noritaka;Iwata Yoko
雌性真后生动物通常发育精子储存器官（SSO）。虽然精子储存的过程可能会影响精子竞争和一雄多熟物种的隐性雌性选择，但发展多个SSO的意义还没有得到很好的理解。与沿海鱿鱼（发展不超过两个SSO）相比，雌性日本普通鱿鱼Todarodes pacificus，一个更海洋的远洋物种，发展超过20个SSO，采取专门的口袋形式，称为精液贮器（SR），在颊膜上。我们调查了精子存储模式的SR的亲子鉴定分析后获得的孵化器人工授精精子检索从6个任意选择的SR。结果表明，雌性能够储存9至23个雄性提供的精子，表明雌性广泛滥交。在精子储存的模式，男性的数量和他们的精子存在于SR的比例之间的SR变化很大，精子储存偏向于特定的男性在个人SR水平。然而，当计算为一个女性内的所有SR的比例，公畜的数量增加，对任何特定的男性父权偏见减弱。这些结果表明，具有多个SR的太平洋胸龙的一个功能可能与确保后代的遗传多样性有关。
Female eumetazoans often develop sperm storage organs (SSOs). Although the processes of sperm storage may influence sperm competition and cryptic female choice in polyandrous species, the significance of developing multiple SSOs is not well understood. In contrast to coastal squids (which develop no more than two SSOs), the female Japanese common squidTodarodes pacificus,a more oceanic pelagic species, develops more than 20 SSOs, which take the form of specialized pockets, called seminal receptacles (SRs), on the buccal membrane. We investigated the sperm storage pattern of SRs by paternity analysis of hatchlings obtained after artificial insemination using sperm retrieved from 6 arbitrarily selected SRs. The results showed that females were capable of storing sperm contributed by 9 to 23 males, indicating that females are broadly promiscuous. In the pattern of sperm storage, the number of males and the proportion of their sperm present in the SRs varied widely among SRs, and sperm storage was biased towards particular males at the individual SR level. However, when calculated as a proportion of all the SRs within a female, the number of sires increased and the paternity bias towards any particular male weakened. These results suggest that one function of having multiple SRs inT. pacificusmay be associated with ensuring higher genetic diversity of the offspring.
登录
查看更多内容
鱿鱼精子的旅程
影响因子：
6.2
作者：
F. Fernández;R. Villanueva;H. Hoving;W. Gilly
通讯作者：
W. Gilly
圈养日本乌贼 (Todarodes pacificus) 产卵行为的近距离观察
影响因子：
4.6
作者：
J. Yamamoto;Kohsuke Adachi;J. Bower;Hajime Matsui;M. Nakaya;Ryusei Ohtani;Pandey Puneeta;Satoshi Suzuki;Shun Tokioka;D. Vijai;T. Yanagimoto;Hae
通讯作者：
Hae
解释头足类动物精子植入的模型（软体动物：头足类）及其进化起源和意义的讨论
影响因子：
1.9
作者：
J. Marian
通讯作者：
J. Marian
Todaropsinae 和 Todarodinae 亚科（头足类：Ommastrephidae）雌性的卵大小和繁殖力
DOI：
10.1017/s002531549800071x
发表时间：
1999
影响因子：
1.2
作者：
V. Laptikhovsky;C. Nigmatullin
通讯作者：
C. Nigmatullin
通过去除精囊观察到雌性侏儒乌贼神秘地偏爱体型较小的雄性乌贼并进行快速交配
影响因子：
2.5
作者：
Noriyosi Sato;T. Kasugai;H. Munehara
通讯作者：
H. Munehara