The ctenophore Mnemiopsis leidyi regulates egg production via conspecific communication.
The ctenophore Mnemiopsis leidyi regulates egg production via conspecific communication.
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DOI：
10.1186/s12898-018-0169-9
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发表时间：
2018-03-26
期刊：
影响因子：
--
通讯作者：
Ryan JF
中科院分区：
文献类型：
--
作者：
Sasson DA;Jacquez AA;Ryan JF
同一物种的个体之间的交流是大多数动物交配和繁殖的重要方面。在同时具有自花受精能力的雌雄同体物种中，与同种物种的交流对于避免近亲繁殖衰退是必不可少的。在一些同时发生的雌雄同体动物中观察到的一种行为适应是配子交易。这种行为涉及成对的雌雄同体个体在作为雄性和雌性繁殖之间交替，因此，必然需要配偶之间的沟通和协调。鲜为人知的是通信在栉水母和同种通信还没有被描述在这个组中，然而，我们以前的工作表明，栉水母Mnemiopsis leidyi可能从事配子交易。我们通过构建分开的竞技场（密封的和可渗透的）来测试这种可能性，这使得我们能够测量配对M的个体卵子产量。莱迪。我们发现，当不允许相互作用时，大小匹配的个体在竞技场的每一侧产生相似数量的卵。然而，如果允许相互作用和交换水，大小匹配的对产生显着不同数量的鸡蛋上的每一边的竞技场，这表明这些对使用化学通信来调节繁殖的同种异体的存在下，将预期在配子交易。这一发现为未来研究M.莱迪。此外，这是Ctenophora中同种通信的第一个证据，Ctenophora是一个超过6亿年前从其他动物中分支出来的群体，对所有动物最后一个共同祖先的信号能力具有重要意义。本文的在线版本（10.1186/s12898-018-0169-9）包含补充材料，可供授权用户使用。
Communication between individuals of the same species is an important aspect of mating and reproduction in most animals. In simultaneously hermaphroditic species with the ability to self-fertilize, communication with conspecifics can be essential to avoid inbreeding depression. One such behavioral adaptation observed in some simultaneous hermaphrodites is gamete trading. This behavior involves individual hermaphrodites in pairs alternating between reproducing as the male and female, and, as such, necessarily requires communication and coordination between mates. Little is known about communication in ctenophores and conspecific communication has not been described in this group; however, our previous work suggested that the ctenophore Mnemiopsis leidyi might engage in gamete trading. We tested for this possibility by constructing divided arenas (both sealed and permeable) that allowed us to measure individual egg output for paired M. leidyi. We found that, when not allowed to interact, size-matched individuals produced similar numbers of eggs on each side of the arena. However, if allowed to interact and exchange water, size-matched pairs produce significantly different numbers of eggs on each side of the arena, suggesting that these pairs use chemical communication to modulate reproduction in the presence of conspecifics as would be expected in gamete trading. This finding presents exciting new possibilities for future investigations into the nature of signaling in M. leidyi. Furthermore, this first evidence of conspecific communication in Ctenophora, a group that branched off from the rest of animals more than 600 million years ago, has significant implications for the signaling ability of the last common ancestor of all animals. The online version of this article (10.1186/s12898-018-0169-9) contains supplementary material, which is available to authorized users.
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影响因子：
2.6
作者：
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通讯作者：
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影响因子：
2.9
作者：
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影响因子：
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作者：
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DOI：
10.1073/pnas.1518127112
发表时间：
2015-12-15
影响因子：
11.1
作者：
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通讯作者：
Woerheide, Gert
影响因子：
2.5
作者：
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通讯作者：
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