Macrodasyida (Gastrotricha): a cladistic analysis of morphology
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چکیده
منابع مشابه
Postembryonic Growth and Morphological Variability in Turbanella mustela (Gastrotricha, Macrodasyida)
The macrodasyid gastrotrich Turbanella mustela was studied by light microscopy and analyzed for postembryonic growth and variation. Growth was characterized by a positive relationship between the length of the body and the lengths of the pharynx and intestine, widths of the head and body, and diameter of the buccal capsule. Evidence of early growth in many of these structures is indicated by st...
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We describe one new species of Acanthodasys (Gastrotricha, Macrodasyida, Thaumastodermatidae) collected from sublittoral sites around Carrie Bow Cay, Belize and Isla Colón in the Bocas del Toro archipelago, Panama. Though eight species of Acanthodasys are currently recognized, no species has yet been reported from the Caribbean. Acanthodasys caribbeanensissp. n. is characterized by the lack of ...
متن کاملPhylogeny of Thaumastodermatidae (Gastrotricha: Macrodasyida) Inferred from Nuclear and Mitochondrial Sequence Data
BACKGROUND Phylogenetic relationships within Gastrotricha are poorly known. Attempts to shed light on this subject using morphological traits have led to hypotheses lacking satisfactory statistical support; it seemed therefore that a different approach was needed. METHODOLOGY/PRINCIPAL FINDINGS In this paper we attempt to elucidate the relationships within the taxonomically vast family Thauma...
متن کاملPhylogeny of Gastrotricha: a morphology-based framework of gastrotrich relationships.
Currently, the phylum Gastrotricha is divided into the orders Macrodasyida and Chaetonotida, with the structure of the myoepithelial pharynx being an important distinguishing feature. Macrodasyida currently has six recognized families, and Chaetonotida comprises seven families. However, within-group relationships are poorly understood. To arrive at a better understanding of gastrotrich systemat...
متن کاملAn Integrated Morphological and Molecular Approach to the Description and Systematisation of a Novel Genus and Species of Macrodasyida (Gastrotricha)
BACKGROUND Gastrotricha systematics is in a state of flux mainly due to the conflicts between cladistic studies base on molecular markers and the classical systematisation based on morphological traits. In sandy samples from Thailand, we found numerous macrodasyidan gastrotrichs belonging to an undescribed species of difficult taxonomic affiliation. The abundance and original nature of the spec...
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ژورنال
عنوان ژورنال: Invertebrate Biology
سال: 2001
ISSN: 1077-8306,1744-7410
DOI: 10.1111/j.1744-7410.2001.tb00116.x