By Elizabeth Gosling
Marine Bivalve Molluscs is a complete and punctiliously up-to-date moment version of Bivalve Molluscs, protecting all significant points of this crucial classification of invertebrates. in addition to being an immense classification biologically and ecologically, a few of the bivalves are fished and cultured commercially (e.g. mussels, oysters, scallops and clams) in a multi-billion greenback around the world industry.
Elizabeth Gosling has written a landmark ebook that may stand for a few years because the usual paintings at the topic. Chapters in Marine Bivalve Molluscs conceal morphology, ecology, feeding, copy, payment and recruitment, progress, body structure, fisheries, aquaculture, genetics, ailments and parasites, and public well-being concerns. an entire figuring out of lots of those points is key for all these operating in bivalve fisheries and culture.
a vital buy for someone considering this crucial type of animals, copies of Marine Bivalve Molluscs might be at the cabinets of biologists, ecologists, environmental scientists, fisheries scientists and body of workers in the aquaculture undefined. Copies of the publication can be to be had in all libraries and study institutions the place those matters are studied or taught.
reports of the 1st Edition
• An admirable achievement... a worthy addition to marine sciences libraries all over the place. The again disguise of this e-book says that it's a landmark textual content that might stand for a few years because the average paintings in this topic. i will be able to in basic terms accept as true with this sentiment. Aquaculture
• A welcome boost to the literature and offers the reader with a entire assessment of organic and environmental elements that have an effect on and keep watch over either ordinary populations of marine bivalves and tradition operations. Aquaculture International
• the writer has performed an admirable task in compiling a wealth of knowledge right into a readable textual content. Transactions of the yankee Fisheries Society
• Will serve good as an outline of a lot of either the experimental biology and the aquaculture of bivalves. Journal of Experimental Marine Biology and Ecology
• presents very good experiences of all significant aspects…an vitally important reference for somebody engaged in bivalve examine, fisheries administration, and aquaculture. Quarterly evaluation of Biology
• The e-book is particularly readable, in a simple sort. it really is good illustrated and there's a wealth of information and records awarded. Bulletin of The Malacological Society of London
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Extra resources for Marine Bivalve Molluscs
Sample text
In ripe Crassostrea gigas the gonad is often 6–8â•›mm thick and may comprise a third of the total body weight, exclusive of the shell (Walne 1974). In clams the gonad is situated at the base of the foot. In oysters and clams the sexes are separate but they do have the ability to change sex (see Chapter 5). Most scallop species are hermaphrodites. In P. 4b). The sperms are shed before the eggs, thus minimising the chances of self‐Â� fertilisation. In dioecious scallop species such as M. varia and P.
14). 20 in Chapter 4). Digestive cells take up material by pinocytosis (uptake of extracellular fluid into a cell) and digest it within Â�vacuoles. 14â•… A section of the digestive gland showing absorption and intracellular digestion of material coming from the stomach (solid arrows) and outward movement of wastes (broken arrows). Adapted from Owen (1955). Reproduced with permission from Journal of Cell Science. Morphology of bivalvesâ•… 33 and the waste is retained in membrane‐bound residual bodies that are later released into the lumen of the tubules.
Proteolytic activity is characteristically low in bivalves but endopeptidases such as chymotrypsin and cathepsin have been reported from the digestive gland, and trypsin activity in the stomach and intestine of some bivalves (Reid 1968). The digestive gland also plays an important role in the storage of metabolic reserves, which are used as an energy source during the process of gametogenesis (see Chapter 5) and during periods of physiological stress (Bayne et al. 1976). 13a). The intestinal cells secrete a range of enzymes: esterases, alkaline and acid phophatases, chitinase and leucineaminopeptidase (Le Pennec et al.