Results 261 to 270 of about 54,556 (304)
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Phylogeny of Veneridae (Bivalvia) based on mitochondrial genomes

, 2020
Veneridae is one of the most diverse families of bivalve molluscs. However, their phylogenetic relationships among subfamilies have been debated for years.
Yu Wang   +6 more
semanticscholar   +1 more source

The stomach in the bivalvia

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1987
The Protobranchia, with a stomach of type I (Gastroproteia), comprise one of only two subclasses of Bivalvia. The stomachs of members of the deposit-feeding Nucu acea and Nuculanacea are basically comparable and differ from those of all filter-feeding bivalves in some important respects. There are only three slender ducts from the digestive diverticula
openaire   +2 more sources

Are Parasites and Diseases Contributing to the Decline of Freshwater Mussels (Bivalvia, Unionida)?

Freshwater Mollusk Biology and Conservation, 2019
Freshwater mussels (Mollusca: Bivalvia: Unionida) consist of 843 species in six families, but many are imperiled. Significant causes of mussel declines include contaminants and loss of substrate.
Andrew McElwain
semanticscholar   +1 more source

Dwarf Males in the Teredinidae (Bivalvia, Pholadacea) [PDF]

open access: possibleScience, 1983
Extreme sexual dimorphism in the Bivalvia is rare. The occurrence of dwarf males inZachsiaappears to be the first case in the Teredinidae and the first outside the Leptonacea. FemaleZachsiarelease straight-hinge larvae that develop in the plankton and settle on living rhizomes ofPhyllospadix.
Ruth D Turner, Yuri Yakovlev
openaire   +2 more sources

Mollusca: Bivalvia

2015
AbstractWith approximately 15,000 described recent species, Bivalvia is the second largest molluscan class-level taxon. Compared to other conchiferan molluscs, the bivalve body plan has undergone several reductions, such as the lack of a distinct head including radula and buccal muscles, which is also reflected in the relatively simple nervous system ...
openaire   +2 more sources

Bivalvia Of The Deep Atlantic

Malacologia, 2008
This paper lists the species and the distribution of the bivalves collected from the deep-sea expeditions undertaken by American, British and French research vessels in the Atlantic over a period of twelve years. Samples were taken from eleven basins, and the analysis is resticted to samples taken with the epibenthic sled from depths ranging from 500 m
openaire   +2 more sources

Microbial Ecology of the Bivalvia, with an Emphasis on the Family Ostreidae

Journal of Shellfish Research, 2018
Rapid improvements in the technology used to assess microbial communities have led to an expansion of the breadth and scope of microbial ecology research over the past 20 y.
Melissa L. Pierce, J. E. Ward
semanticscholar   +1 more source

The hypobranchial gland in the Bivalvia

Canadian Journal of Zoology, 1977
The hypobranchial gland of the protobranchs Nucula nucleus and Solemya parkinsoni comprises mucous cells flanked by inversely conical and ciliated regenerative cells. A similar structure occurs in the filibranch Monia squama and in the eulamellibranchs Fimbria fimbriata and Corbicula fluminea except that in the two latter the conical cells are not ...
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PARASITISM AND THE UNIONACEA (BIVALVIA)

Biological Reviews, 1984
SummaryIt is proposed that the incorporation of a unique parasitic stage in the life‐cycle of unionaceans which involves an obligate relationship between a vertebrate host, usually a fish, and a highly modified larval stage, the glochidium, has had far‐reaching consequences with respect to overall morphology, extent of species' geographic ranges, and ...
openaire   +2 more sources

Tissue Hemoglobins in Bivalvia (Mollusca)

Biology Bulletin, 2003
Distribution and properties of tissue hemoglobins in bivalves are reviewed. The mollusk gills are given particular attention; their functions, relative weight and area of gill surface, as well as the content, properties, and functional importance of gill hemoglobin are analyzed.
openaire   +3 more sources

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