Department of Life Sciences and Systems Biology, University of Torino, via Accademia Albertina 13, 10123, Torino, Italy.
Pelagosphera Soc. Coop. Via U. Cosmo 17/bis 10131, Torino, Italy.
Sci Rep. 2019 Dec 13;9(1):19132. doi: 10.1038/s41598-019-55412-3.
The zoeal development of the brachyuran crab, Palicus caronii, comprises two zoeal stages and the morphology is described and illustrated in detail. The zoeae were collected in plankton samples from the Southern Ligurian Sea (Western Mediterranean). Although the morphology of the larval stages of this species was unknown, a combination of characters allowed the zoeae to initially be assigned to the Palicidae, based on the previous unique known first zoeal description of one species of this family. Later, the identification of the larvae as Palicus caronii was confirmed through molecular analysis. The morphological features of the zoeae that characterize the Palicidae and separate them from the Crossotonotidae are confirmed. Also, the larval development comprising only two zoeal stages observed in Palicus caronii, the peculiar and uncommon carapace surface setation, and the presence of anterodorsal and posterodorsal sensory dorsal organs suggest that these characters could be common to the Palicoidea.
短尾大眼蟹的幼体发育包括两个幼体阶段，其形态学特征被详细描述和说明。幼体是从南利古里亚海（西地中海）的浮游生物样本中收集的。尽管该物种的幼虫形态未知，但通过特征组合，最初根据该科唯一已知的一种物种的独特的第一幼体描述，将幼体归类为 Palicidae。后来，通过分子分析确认了幼虫是 Palicus caronii。Palicidae 的特征形态特征将其与 Crossotonotidae 区分开来，并得到了确认。此外，仅观察到两个幼体阶段的 Palicus caronii 的幼虫发育、独特且不常见的甲壳表面刚毛以及前背和后背感觉背器官的存在表明，这些特征可能在 Palicoidea 中很常见。
