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dc.contributor.authorSchroeder, Deise Leda Garciapt_BR
dc.contributor.authorAraujo, Paula Beatriz dept_BR
dc.date.accessioned2013-11-19T01:47:01Zpt_BR
dc.date.issued2009pt_BR
dc.identifier.issn0101-8175pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/80649pt_BR
dc.description.abstractThe goal of this study is to describe and compare the initial stages of the post-marsupial development of Hyalella pleoacuta González, Bond-Buckup & Araujo, 2006, prior to the development of sexual dimorphism. Ovigerous females were collected in São José dos Ausentes, RS, Brazil and kept in laboratory. Juveniles were kept separately after emerging from the marsupium and were monitored daily for the presence of exuvia. Individuals from post-marsupial stages (S) 1 to 4 were dissected and illustrated. Cuticular structures were observed through SEM. Twenty three types of setae, one type of setule, two types of pores, two types of denticles and one type of penicilium were found. Cuticular structures undergo modification through development in the matters of haste size, number and size of setules, and formation of the polygonal pattern, although there is no change from one type to another. Gnathopods and antennae are the appendages that go through more modifications. The articles number of the flagellum is constant until S2. The size of the coxal plate of gnathopods in relation to the propodus has a tendency to increase throughout the stages. The uropod proportion becomes smaller in S3 when compared to S1. The number of serrate setae in the external plate of maxilla 1 varies up to S4, being different from the adult whose number is 9. The telson modifies its shape but its setae number is constant.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofRevista Brasileira de Zoologia. São Paulo, SP. Vol. 26, n. 3 (Sept. 2009), p. 391-406pt_BR
dc.rightsOpen Accessen
dc.subjectHyalella pleoacutapt_BR
dc.subjectCuticular structuresen
dc.subjectJuvenilesen
dc.subjectMorfologia animalpt_BR
dc.subjectMorphologyen
dc.titlePost-marsupial development of Hyalella pleoacuta (Crustacea: Amphipoda) : stages 1-4pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000767996pt_BR
dc.type.originNacionalpt_BR


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