Mate-seeking behavior in the calanoid copepod Eodiaptomus japonicus
Mate-seeking behavior in the calanoid copepod Eodiaptomus japonicus
复制标题
桡足类 Eodiaptomus japonicus 的求偶行为
DOI：
10.1093/plankt/fbac052
复制
发表时间：
2022
影响因子：
2.1
通讯作者：
Ban Syuhei
中科院分区：
文献类型：
--
作者：
Liu Xin;Nakamoto Yusuke;Dur Gael;Ban Syuhei
我们在这里首次报告了桡足类 Eodiaptomus japonicus 的求偶行为。三维 (3D) 记录分析表明，雄性表现出同性和异性追求模式，在寻找过程中游泳速度没有明显增加。雄性似乎使用流体机械信号来寻找雌性的位置，并从最远 6 毫米的距离（主要是从下方）检测它们。雄性总是会进行几次小跳跃，以调整自己的位置以达到捕捉配偶的最佳位置。在同性恋相遇中，两个人在 1 秒内分开，而异性交配事件中的平均交配持续时间持续约 2.9 分钟。雌性在所有异性追求事件中都表现出摆脱雄性的行为，表明择偶的存在。这种配偶选择可能会提高后代质量并减少配对时间，从而降低捕食风险。
We present here the first report of the mate-seeking behaviors of the calanoid copepodEodiaptomus japonicus.Analyses of three-dimensional (3D) recordings revealed that males exhibit both homo- and heterosexual pursuit patterns, with no obvious increase in swimming speed during seeking. Males appear to use hydromechanical signals to seek female locations and detect them from up to 6 mm away, mainly from below. Males always exhibit several small hops to adjust their position to an optimal for catching a mate. In homosexual encounters, the two individuals separate within 1 s, whereas the average copulation duration in heterosexual mating events persists for ∼2.9 min. Females display a shaking-off male behavior in all heterosexual pursuit events, indicating the existence of mate choice. This mate choice may result in enhanced offspring quality and decrease the pairing time thereby reducing predation risk.