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Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Stöhr, S. (2005). Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms. Zool. J. Linn. Soc. 143(4): 543-576. https://dx.doi.org/10.1111/j.1096-3642.2005.00155.x
In: Zoological Journal of the Linnean Society. Academic Press: London. ISSN 0024-4082; e-ISSN 1096-3642, meer
Peer reviewed article  
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Trefwoorden
    Biogeny > Ontogeny
    Biology > Organism morphology > Animal morphology
    Classification > Taxonomy
    Developmental stages > Larvae
    Population functions > Growth
    Marien/Kust
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Abstract
    The ophiuroid skeleton continues to develop well beyond metamorphosis and small juveniles often lack many of the characters used to identify adult specimens. The ecological role of postmetamorphic stages is largely unknown mainly due to difficulties with their identification. Accurate descriptions of postlarvae and their development are therefore necessary to match them to their adult conspecifics. However, juveniles are known for less than 2% of the about 2000 extant species of ophiuroids. Consequently, the taxonomic value of juvenile characters is still poorly understood. In this study, the postlarval ontogeny of the non-brooding Ophioscolex glacialis, Ophioscolex purpureus, Ophiolimna bairdi, Ophiopleura borealis, Ophiura robusta, Amphiura chiajei, Ophiopus arcticus, Histampica duplicata, Ophiothrix fragilis, Ophiocomina nigra, and the brooding Ophiomitrella clavigera, Ophiacantha anomala and Amphiura borealis are described for the first time. The first complete description of the development of Amphiura filiformis is provided, for which previously only the development of the oral skeleton had been described. Previous descriptions of postlarvae of Ophiura ophiura, Ophiura albida and Asteronyx loveni are supplemented.
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