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LARVAL AND EARLY JUVENILE DEVELOPMENT IN PAGURUS STEVENSAE HART, 1971 (DECAPODA: ANOMURA: PAGURIDAE), REARED IN THE LABORATORY

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ABSTRACT The zoeal, megalopal, and first three juvenile stages of Pagurus stevensae Hart, 1971, are described and illustrated from larvae reared under laboratory conditions. Zoeae of P. stevensae are easily distinguished from the larvae of other local hermit crab species by several distinctive morphological characters. The most readily observed are the fourth telsonal process, which is elongate and fused to the telson in all stages, and the antennal scaphocerite, which is armed, not only with a prominent distal spine, but with 3 spinose processes adjacent to its base. Additionally, the antennal endopod terminates in a strong bifid spine, at least in the first 2 stages. Certain aspects of development in this species suggest that hypotheses regarding character polarities within the Paguridea be reassessed.

10.1163/193724093X00101
/content/journals/10.1163/193724093x00101
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/content/journals/10.1163/193724093x00101
2017-12-11

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