Extremely short embryonic period of the intertidal pulmonate limpet Siphonaria sirius (Pilsbry, 1895)

Extremely short embryonic period of the intertidal pulmonate limpet Siphonaria sirius (Pilsbry, 1895)
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潮间带肺贝 Siphonaria Sirius 的胚胎期极短(Pilsbry,1895)

DOI:
10.1080/13235818.2021.1943601
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发表时间:
2021
期刊:
影响因子:
1
通讯作者:
Yusa Yoichi
Yusa Yoichi
中科院分区:
生物学4区
文献类型:
--
作者:
Wada Yoko;Yusa Yoichi

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蚤科是泛肺科,生活在世界各地的温带到热带地区的潮间带岩质海岸。尽管天牛的卵团通常在夏季的潮间带岩岸下部发现,但缺乏关于它们胚胎发育的信息。我们观察了胚胎发育情况和胚胎发育持续时间。西里乌斯在实验室和田间都是如此。这项研究于2014年至2015年夏天在日本和歌山市白滨市进行。胚胎发育过程。Srius与其他浮游营养型管水母类相似。然而,在实验室27.35℃的温度下,天牛在产卵后的4天内完成产卵,这是蚤科中产卵时间最短的。田间孵化速度明显快于产卵后1.6d,但平均气温(27.42℃)与室内温度相近。卵捕食者的存在,以及其他环境因素,可能是该物种胚胎期短的原因,特别是在野外。
Siphonariidae is a panpulmonate family that occurs in intertidal rocky shores worldwide within temperate to tropical areas. Although the egg masses ofSiphonaria siriusare commonly found in lower intertidal rocky shores in summer, there is a lack of information on their embryonic development. We examined the embryonic development and duration ofS. siriusboth in the laboratory and in the field. The study was conducted in Shirahama, Wakayama, Japan, during the summer of 2014 and 2015. The embryonic developmental process ofS. siriuswas similar to that of other planktotrophic siphonariids. However,S. siriushatched within four days after oviposition at 27.35°C in the laboratory, which is the shortest in the Siphonariidae. In the field, hatching occurred notably faster at 1.6 days after oviposition, although the average temperature (27.42°C) was similar to that in the laboratory. The presence of egg predators, as well as other environmental factors, may be responsible for the short embryonic period of this species, especially in the field.
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