出版社：International Academy of Ecology and Environmental Sciences
摘要：The Achelata, lobsters lacking claws and having a phyllosoma larva, are divided into two families, thePalinuridae or spiny lobsters and the Scyllaridae or slipper lobsters. Within the Palinuridae adults of twogroups were identified by Parker (1884), the Stridentesthat are capable of producing sounds, and theSilentesthat are not known to produce sounds. The Stridentes employ a file-like structure on the dorsal surfaceof the cephalon and a plectrum consisting of a series of ridges on the proximal segment of the second antennato produce their sounds. All species of Achelata hatch as an unpigmented thin phyllosoma larva. Thephyllosoma larva of the Stridentes have a presumptive file-like structure on the dorsal cephalon. A similarfile-like structure is found on the cephalon of one species of Silentes, Palinurellus wienckki, and some but notall of the phyllosoma larvae of the Scyllaridae. No presumptive plectrum is found on the second antenna ofany of the phyllosoma larvae. Presence of a presumptive file-like structure on phyllosoma larvae of Silentesand Scyllaridae suggests that the ability to produce sounds may have been lost secondarily in the Silentes andScyllaridae.
