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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Effects of embryonic exposure to predators on the postnatal defensive behaviors of cuttlefish
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Effects of embryonic exposure to predators on the postnatal defensive behaviors of cuttlefish

机译：胚胎接触捕食者对墨鱼产后防御行为的影响

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Cuttlefish lack parental care and juveniles face a high predatory risk immediately after hatching. Previous studies have shown that the sensory systems of cuttlefish are functional before hatching, and embryos can recognize predatory visual and chemical cues innately. However, it is not known whether the embryonic experience of predatory cues impacts their postnatal defensive behaviors. Cuttlefish eggs (Sepia pharaonis with transparent capsule and Sepia officinalis with black capsule) were separated into seven groups: one control group and six cue-exposure groups. Embryos in the cue-exposure groups were exposed to either one of three types of predatory cues (visual, chemical, and both) or one of three similar types of non-predatory cues. Primary and secondary defensive behaviors of the cuttlefish hatchlings were examined at one week of age. The results showed that an early exposure to predatory cues in both species altered cuttlefish's hatching time and their postnatal primary defensive behaviors. However, embryonic sensory experience had different impacts on defensive behaviors in two species of cuttlefish. Specifically, visual information appeared to be more salient than olfactory information for S. pharaonis embryos, while both visual and olfactory cues seemed to influence S. officinalis embryos equally. These findings demonstrate that the embryonic sensory experiences of cuttlefish from these two species differentially affect the development of defensive behaviors among hatchlings.
机译：乌贼缺乏父母关怀，幼鱼在孵化后立即面临较高的掠食风险。先前的研究表明，乌贼的感觉系统在孵化之前是有功能的，并且胚胎可以固有地识别掠食性视觉和化学线索。但是，尚不清楚掠食性线索的胚胎经历是否会影响其出生后的防御行为。乌贼卵（透明胶囊的深褐色法老鱼和黑色胶囊的深褐色）被分为七个组：一个对照组和六个线索暴露组。线索暴露组中的胚胎暴露于三种类型的掠食性线索（视觉，化学和两者）之一或三种类似类型的非掠夺性线索之一。在一周内检查了墨鱼幼鱼的初级和次级防御行为。结果表明，这两个物种的捕食性线索的早期暴露都改变了墨鱼的孵化时间及其产后的主要防御行为。但是，胚胎的感觉经验对两种墨鱼的防御行为有不同的影响。具体而言，视觉信息似乎比法老葡萄球菌的嗅觉信息更为重要，而视觉和嗅觉提示似乎均能平等地影响厚朴葡萄球菌的胚胎。这些发现表明，来自这两个物种的墨鱼的胚胎感觉体验差异地影响了幼鱼之间防御行为的发展。

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