Brooding and glochidia release in Margaritifera auricularia (Spengler, 1793) (Unionoida: Margaritiferidae)
نویسندگان
چکیده
منابع مشابه
Ontogeny of juvenile freshwater pearl mussels, Margaritifera margaritifera (Bivalvia: Margaritiferidae)
The gills of juvenile freshwater bivalves undergo a complex morphogenesis that may correlate with changes in feeding ecology, but ontogenic studies on juvenile mussels are rare. Scanning electron microscopy was used to examine the ultrastructure and ontogeny of 117 juvenile freshwater pearl mussels (Margaritifera margaritifera) ranging in age from 1-44 months and length from 0.49-8.90 mm. Three...
متن کاملSurvival of glochidial larvae of the freshwater pearl mussel, Margaritifera laevis (Bivalvia: Unionoida), at different temperatures: a comparison between two populations with and without recruitment.
The viability of free-living glochidia of the freshwater pearl mussel (Margaritifera laevis) was studied in the laboratory at water temperatures of 10 degrees C, 15 degrees C and 20 degrees C. To obtain glochidia, gravid female mussels were collected from the Chitose River, inhabited by adult and juvenile mussels, and from the Abira River, where only adult mussels were found. Daily survival rat...
متن کاملTaxonomy and Distribution of Freshwater Pearl Mussels (Unionoida: Margaritiferidae) of the Russian Far East
The freshwater pearl mussel family Margaritiferidae includes 13 extant species, which are all listed by IUCN as endangered or vulnerable taxa. In this study, an extensive spatial sampling of Margaritifera spp. across the Russian Far East (Amur Basin, Kamchatka Peninsula, Kurile Archipelago and Sakhalin Island) was conducted for a revision of their taxonomy and distribution ranges. Based on thei...
متن کاملPhylogeography and conservation genetics of endangered European Margaritiferidae (Bivalvia: Unionoidea)
Margaritifera margaritifera and M. auricularia are among the most endangered freshwater mussels in the world, and the only species of the genus found in Europe. Our genetic study explores allozymic variability (27 loci) and differentiation at the mitochondrial sequence level (partial COI and 16S rRNA gene sequences). The Spanish M. auricularia population showed genetic parameters of variation t...
متن کاملFreshwater Pearl Mussel (margaritifera Margaritifera) Host Choice and Behavioural Responses to Changes in Flow Regime
The endangered freshwater pearl mussel (Margaritifera margaritifera), one of the longest-lived invertebrates, are threatened globally. Scotland, UK, remains a stronghold, however even here the population is declining due to factors such as habitat degradation, pollution and pearl fishing. The study comprised two parts: field surveys of glochidia infection of host salmonid fish, and a novel labo...
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ژورنال
عنوان ژورنال: Journal of Molluscan Studies
سال: 2018
ISSN: 0260-1230,1464-3766
DOI: 10.1093/mollus/eyy008