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, ...
متن کاملTranscriptome Changes during the Life Cycle of the Red Sponge, Mycale phyllophila (Porifera, Demospongiae, Poecilosclerida)
Sponges are an ancient metazoan group with broad ecological, evolutionary, and biotechnological importance. As in other marine invertebrates with a biphasic life cycle, the developing sponge undergoes a significant morphological, physiological, and ecological transformation during settlement and metamorphosis. In this study, we compare new transcriptome datasets for three life cycle stages of t...
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 کاملNew species of sponges (Porifera, Demospongiae) from the Aleutian Islands and Gulf of Alaska.
Ten new species of demosponges, assigned to the orders Poecilosclerida, Axinellida and Dictyoceratida, discovered in the Gulf of Alaska and along the Aleutian Island Archipelago are described and compared to relevant congeners. Poecilosclerida include Cornulum globosum n. sp., Megaciella lobata n. sp., M. triangulata n. sp., Artemisina clavata n. sp., A. flabellata n. sp., Coelosphaera (Histode...
متن کاملSources of Secondary Metabolite Variation in Dysidea avara (Porifera: Demospongiae): The Importance of Having Good Neighbors
Several studies report temporal, geographical, and intra-individual variation in sponge metabolite yields. However, the internal and/or external factors that regulate the metabolite production remain poorly understood. Dysidea avara is a demosponge that produces sesquiterpenoids (avarol and derivatives) with interesting medical properties, which has prompted addressed studies to obtain enough a...
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ژورنال
عنوان ژورنال: Iheringia. Série Zoologia
سال: 2010
ISSN: 0073-4721
DOI: 10.1590/s0073-47212010000400017