BANZARE holothuroids (Echinodermata: Holothuroidea)
نویسندگان
چکیده
منابع مشابه
Phylogeny of Holothuroidea (Echinodermata) inferred from morphology
Holothuroids, or sea cucumbers, are an abundant and diverse group of echinoderms with over 1400 species occurring from the intertidal to the deepest oceanic trenches. In this study, we report the first phylogeny of this class, based on a cladistic analysis of 47 morphological characters. We introduce several previously unconsidered synapomorphic characters, examine the relationships between rep...
متن کاملBiologically Active Triterpene Glycosides from Sea Cucumbers (holothuroidea, Echinodermata)
Sea cucumbers are characterized by their content in holothurins, triterpenoid glycosides that are responsible for the toxicity of these echinoderms. Nearly 100 holothurins isolated in the last twenty years are grouped into three main aglycone structural types: 3p-hydrox>iiolost-9(ll)-ene, 3p-hydrox5*iolost-7-ene and nonholostane based aglycones. This communication offers a general view of the s...
متن کاملBiomechanics of adhesion in sea cucumber cuvierian tubules (echinodermata, holothuroidea).
Several species of sea cucumbers, all belonging to a single family, possess a peculiar and specialized defense system, the Cuvierian tubules. It is mobilized when the animal is mechanically stimulated, resulting in the discharge of a few white filaments, the tubules. In seawater, the expelled tubules lengthen considerably and become sticky upon contact with any object. The adhesiveness of their...
متن کاملAspidochirotida (Echinodermata: Holothuroidea) from the northeast coast of Brazil.
This is a taxonomic work on the aspidochirotid sea cucumbers from shallow waters in Northeast Brazil. We studied 165 specimens, classified into 2 families, 3 genera, 7 subgenera and 9 species. Descriptions, illustrations and literature data are included for each species, in addition to ecological notes and information on their distribution in the northeast coast of Brazil. A taxonomic key is pr...
متن کاملPhylogeny of Sea Cucumber (Echinodermata: Holothuroidea) as Inferred from 16S Mitochondrial rrna Gene Sequences (Filogeni Timun Laut (Echinodermata: Holothuroidea) Berdasarkan Jujukan Gen 16S Mitokondria rrna)
This study aimed to determine phylogenetic relationship between and among selected species of sea cucumbers (Echinodermata: Holothuroidea) using 16S mitochondrial ribosomal RNA (rRNA) gene. Phylogenetic analyses of 37 partial sequences of 16S mitochondrial rRNA gene using three main methods namely neighbour joining (NJ), maximum parsimony (MP) and maximum likelihood (ML) showed the presence of ...
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ژورنال
عنوان ژورنال: Zootaxa
سال: 2009
ISSN: 1175-5334,1175-5326
DOI: 10.11646/zootaxa.2196.1.1