BeRMS source details

NameEreskovsky, A.V.; Lavrov, D.V.; Boury-Esnault, N.; Vacelet, J. 2011. Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini. Zootaxa 2768: 5-31
Type Publication
Linkhttp://www.mapress.com/zootaxa/
AbstractHalisarca harmelini sp. nov. is described from the northwestern Mediterranean Sea at depths between 15–65 m from coralligenous rocks. The new species occurs as thin sheets only on the bryozoan Smittina cervicornis. Morphologically, it is characterized by its thin layer architecture, skin-like, lusterless and smooth surface, a soft, very delicate and easily torn texture, and pale-yellow colour. At the cytological level H. harmelini is characterized by a complex of cells with inclusions: spherulous, vacuolar, granular, microgranular and rhabdiferous cells. The new species is clearly different in cell and endobiotic bacteria content and in external morphology from all previously described species of Halisarca. In addition to the description of the new species, we have conducted a thorough ultrastructural investigation and re-described the type species Halisarca dujardini Johnston, 1842 using specimens from different region of the North Atlantic, Arctic and North Pacific. To investigate the relationships between H. harmelini and H. dujardini on the molecular level, we determined the complete mitochondrial DNA (mtDNA) sequences of the new species of Halisarca and compared it with that of H. dujardini.The two mitochondrial genomes are identical in gene content and gene arrangement but differ in size by ~1,300 bp (6.8%). The overall genetic distance between coding sequences is 0.1, much greater than what has been previously reported for individual species of non-bilaterian animals. The latter observation supports the new species status of H. harmelini.
Geographical
term
Mediterranean
Bibliographical
term
Phylogeny, Phylogenesis
Taxonomic
term
Porifera
Taxa
(3)
Checked: verified by a taxonomic editorHalisarca dujardinii Johnston, 1842 (redescription)
Checked: verified by a taxonomic editorHalisarcida accepted as Checked: verified by a taxonomic editorChondrosida (new combination reference)
Checked: verified by a taxonomic editorHalisarcidae Schmidt, 1862 (taxonomy source)
Distributions
(2)
Mediterranean Sea for Halisarca harmelini Ereskovsky, Lavrov, Boury-Esnault & Vacelet, 2011
Western Mediterranean for Halisarca harmelini Ereskovsky, Lavrov, Boury-Esnault & Vacelet, 2011
Edit
history
Date   action   by
2013-01-12 18:30:12Z  created  db_admin
2014-03-10 09:49:16Z  changed  Boury-Esnault, Nicole
 [Back to search]