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handle: 10261/43448
[FR] Trois femelles gravides du crabe Sesarmidae Aratus pisonii (H. Milne Edwards, 1837) (Sesarmidae) ont été capturées dans une lagune côtière à Mazatlán, Mexique. Les larves de cette espèce ont été cultivées au laboratoire, depuis leur éclosion jusqu'au stade Mégalope. La morphologie des quatre stades Zoés et de la Mégalope est décrite et illustrée. Une comparaison morphologique avec les descriptions antérieures de cette espèce, réalisées en Jamaique et au Brésil, est présentée, ainsi qu'une comparaison avec toutes les larves connues des espèces de Armases Abele, 1989, le genre le plus proche de Aratus. Plusieurs différences sont notées en comparaison avec les descriptions antérieures de Aratus pisonii. Des caractéristiques supplémentaires sont ajoutées, notamment la setation du céphalothorax et des appendices buccaux de la Mégalope, non décrits à ce jour.
[EN] Three ovigerous females of the crab, Aratus pisonii (H. Milne Edwards, 1837) (Sesarmidae) were captured from a coastal lagoon in Mazatlán, Mexico. Larvae were reared in the laboratory from hatching to the megalopa stage. The morphology of the four zoeal stages and the megalopa is described and illustrated. Morphological comparisons are made with previous descriptions of this species from Jamaica and Brazil, and with all known descriptions for the larvae of Armases Abele, 1989, the closest similar genus. Several differences are observed with regard to earlier descriptions of Aratus pisonii, and additional characters, such as the previously undescribed cephalothoracic setation of the larval stages and the mouthparts of the megalopa, are described and illustrated.
This project was partly supported by CONACyT grant 44675, Mexico. Jose A. Cuesta’s participation was funded by a research contract “Ramón y Cajal” from the “Ministerio de Educación y Ciencia” (Spain).
22 páginas, 7 figuras, 2 tablas.
Peer reviewed
Larvae, Megalopa, Mégalope, Larves, Aratus pisonii, Mexico
Larvae, Megalopa, Mégalope, Larves, Aratus pisonii, Mexico
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