Aspects of evolution in the anomuran superfamily Paguroidea: one larval prospective
作者:
PATSYA. MCLAUGHLIN,
RAFAEL LEMAITRE,
期刊:
Invertebrate Reproduction & Development
(Taylor Available online 2000)
卷期:
Volume 38,
issue 3
页码: 159-169
ISSN:0792-4259
年代: 2000
DOI:10.1080/07924259.2000.9652453
出版商: Taylor & Francis Group
关键词: Larval development;carcinization;abdominal evolution;Anomura;Paguroidea;Lithodidae
数据来源: Taylor
摘要:
McLaughlin and Lemaitre (1997), in their examination of carcinization in the Anomura, rejected the traditional concept of paguroid evolution, which had consistently maintained that the lithodid crab-like body form evolved from a typical shell-dwelling hermit crab. Their hypothesis proposed just the reverse, i.e., the lithodid crab-like body form gave rise to the simple hermit crab body form through calcium loss, habitat change and consequential morphological adaptations. Their original hypothesis was based on characters derived from adult morphology, but they suggested that larval data would support their view. The megalopal and first or first- and second-crab stages of representatives of both subfamilies of the Lithodidae provide the first of such larval information. Ten species in eight genera have been examined specifically for development of abdominal tergites. These data, although preliminary in scope, unequivocally disprove the Bouvierian concept of lithodid abdominal plate development, and in so doing, lend substantial support to McLaughlin and Lemaitre's hypothesis.
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