Larval,megalopal and early juvenile development in Pagurus granosimanus (Stimpson, 1859) (Decapoda: Anomura: Paguridae) reared in the laboratory |
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| Authors: | HYUN SOOK KO PATSY A MCLAUGHLIN |
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| Institution: | 1. Department of Life Sciences , Silla University , Busan, 617-736, Republic of Korea Phone: +82 52 999 5473 Fax: +82 52 999 5473 E-mail: hsko@silla.ac.kr;2. Shannon Point Marine Center , Western Washington University , 1900 Shannon Point Road, Anacortes, WA, 98221-4042, USA Phone: +1 360 293 2188 Fax: +1 360 293 2188 E-mail: hermit@fidalgo.net |
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| Abstract: | Summary The larval, megalopal and early juvenile stages of Pagurus granosimanus are described, illustrated and compared with other North Pacific species of the genus. Morphologically, the zoeae of P. granosimanus appear most similar to the Japanese P. brachiomastus in the majority of characters, but share the endopodal setation of the third maxilliped with a second Japanese species, P. pectinatus. The megalopae of P. granosimanus are unlike those of other North Pacific species in having 5+5 marginal setae on the telson, rather than the customary 4+4, or less frequent 3+3. Comparison of juvenile characters is limited to pleopodal changes among the regional species for which data are available. P. granosimanus is unusual in undergoing complete pleopodal loss at the second crab stage with return of left pleopods in the fourth stage. |
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| Keywords: | Decapoda Paguroidea Paguridae Pagurus granosimanus larval megalopal and juvenile development |
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