Morphological maturity of the knobbed spider crab, Leurocyclus tuberculosus (H. Milne Edwards & Lucas, 1842) (Brachyura, Majidae) in the Northern Patagonian Gulfs
Sexual maturation in brachyurans has three different components: physiological, morphological, and functional. The second is visualized by examining changes in the morphometric relationships between some dimensions of the organs involved in mating and egg incubation, relative to a standard measure o...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/95840 |
| Acesso em linha: | http://hdl.handle.net/11336/95840 |
| Access Level: | acceso abierto |
| Palavra-chave: | Size at Morphological Maturity Majoidea Spider crab PATAGONIA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Resumo: | Sexual maturation in brachyurans has three different components: physiological, morphological, and functional. The second is visualized by examining changes in the morphometric relationships between some dimensions of the organs involved in mating and egg incubation, relative to a standard measure of size. Aiming to establish the size at morphological maturity for the Patagonian knobbed spider crab, Leurocyclus tuberculosus, a morphometric analysis was conducted on specimens sampled in the northern Patagonian gulfs (41°-43°S). Discontinuities were detected in ln transformed relationships of abdomen width on carapace width of females, and right chela length on carapace width of males. For females, estimated CWmorph50% (carapace width at which 50% of the individuals attains morphometric maturity) was 47.9 mm, and CW of the smallest ovigerous female observed in the samples was 42.7 mm. For males, a change in the growth rate of ln(ChL) relative to ln(CW) was detected at 48.9 mm CW. |
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