Affinities of the family Sollasellidae (Porifera, Demospongiae). I. Morphological evidence
نویسندگان
چکیده
منابع مشابه
Molecular phylogenies support homoplasy of multiple morphological characters used in the taxonomy of Heteroscleromorpha (Porifera: Demospongiae).
Sponge classification has long been based mainly on morphocladistic analyses but is now being greatly challenged by more than 12 years of accumulated analyses of molecular data analyses. The current study used phylogenetic hypotheses based on sequence data from 18S rRNA, 28S rRNA, and the CO1 barcoding fragment, combined with morphology to justify the resurrection of the order Axinellida Lévi, ...
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This paper deals with niphatid sponges from the coast of the Bahia State, northeastern coast of the Brazilian shelf (southwestern Atlantic). Two new species are described, Amphimedon estelae sp. nov. and Niphates luizae sp. nov. A taxonomic study of those samples is given, including description and illustrations. Both species were compared with their congeners present in the Atlantic Ocean.
متن کاملTwo new species in the family Axinellidae (Porifera, Demospongiae) from British Columbia and adjacent waters
Two new species of Demospongiae are described for British Columbia and adjacent waters in the family Axinellidae, Auletta krautteri sp. n. and Dragmacidon kishinensis sp. n. They represent range extensions for both of these genera. Both are fairly commonly encountered, Auletta krautteri below diving depths (87 to at least 300 m) and Dragmacidon kishinensis in shallow water (intertidal to 30 m)....
متن کاملUltrastructural evidence of bacterial damage to Spongia officinalis fibres (Porifera, Demospongiae)
Skeletons of healthy and damaged specimens of Spongia officinalis were examined by scanning and transmission electron microscopy. Comparisons of the fibre net demonstrated that bacterial invasion was responsible for the decay of spongin fibres in affected sponges. Bacteria were located both inside and on the surface of fibres. Irregularly shaped spaces and canals together with many orifices wer...
متن کاملReconstruction of Family-Level Phylogenetic Relationships within Demospongiae (Porifera) Using Nuclear Encoded Housekeeping Genes
BACKGROUND Demosponges are challenging for phylogenetic systematics because of their plastic and relatively simple morphologies and many deep divergences between major clades. To improve understanding of the phylogenetic relationships within Demospongiae, we sequenced and analyzed seven nuclear housekeeping genes involved in a variety of cellular functions from a diverse group of sponges. MET...
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ژورنال
عنوان ژورنال: Contributions to Zoology
سال: 2006
ISSN: 1383-4517,1875-9866
DOI: 10.1163/18759866-0750304003