Ontogenetic Variations in Cuticle Morphology in the Blue Crab Callinectes Sapidus Rathbun, 1896
| Autor: | Carrie E. Schweitzer, Rodney M. Feldmann, Jennifer L. Burrell, Kristie Hein, David A. Waugh, Angela Lynn Hull |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Journal of Crustacean Biology. 29:141-156 |
| ISSN: | 1937-240X 0278-0372 |
| Popis: | In an effort to use aspects of the cuticle as taxonomic characters in phylogenies of fossil and extant decapods, variation due to gender, growth, sample location on the carapace, and molt cycle must be understood so that taxonomically important characters can be identified. In this study, effects of sample location on the carapace and carapace size were examined. A series of male Callinectes sapidus Rathbun, 1896, specimens from 2-6 cm in length were collected on the Rhode River of the Chesapeake Bay, MD, USA. To study the effects of sample location and carapace size on parameters of the cuticle, the cuticle was examined in thin section and on the surface of the dorsal carapace. The distributional density of setal pits and nodes and node size were measured on the surface. In thin section, thickness of the cuticle and construction of the nodes and setal pits was examined. Thickness of the cuticle, node size, and setal pit density increased during growth of the crab. Node density decreased with gro... |
| Databáze: | OpenAIRE |
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