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ABBREVIATED DEVELOPMENT OF ARMASES MIERSII (GRAPSIDAE: SESARMINAE), A CRAB THAT BREEDS IN SUPRALITTORAL ROCK POOLS

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ABSTRACT Armasesmiersii is the only crab known to complete larval development in supralittoral rock pools. This habitat is characterized by harsh and highly variable abiotic and biotic conditions, requiring ecophysiological and ontogenetic adaptations. In this study, the complete larval development of Armases miersii from laboratory-cultured and field-collected material from Jamaica is described. Development consists of 3 zoeal stages followed by a megalopal stage. It is thus abbreviated in comparison to other species of the genus Armases and the closely related Aratus pisonii, which have 4 zoeae and 1 megalopa. Morphology of the zoeal and megalopal stages is compared with those of other species of the genera Armases and Aratus for which larval development has been described. The reduction of zoeal stages is discussed in relation to its ecological and evolutionary relevance.

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/content/journals/10.2307/1549543
1999-01-01
2016-12-04

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