Download Aquatic Invertebrates of Alberta by Hugh F. Clifford PDF

By Hugh F. Clifford

A good variety of invertebrate existence lives underneath the outside of Alberta's lakes and streams. Aquatic Invertebrates of Alberta enhances current box publications to organisms in Alberta, protecting all significant teams of aquatic invertebrates. color photos, pictorial keys, and 114 whole-specimen drawings supplement the textual content. This ebook is barely to be had during the college of Alberta book place (print-on-demand).

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General Features Freshwater sponges, similar to their marine relatives, are nothing but little pump stations. Almost all the life processes of sponges are based on their ability to pump water through the numerous canals within the body of the sponge. Sponges basically have two types of cells. One type is bell-shaped, known as a collar (or choanocyte) cell; the other basic cell type is called an amoebocyte. Each collar cell bears a flagellum. The beating of the flagella of the thousands of collar cells (which line the canals of the sponge) assists in drawing water into the sponge.

The ZOOPLANKTON references are: Anderson (1967, 1968a, 1968b, 1970b, 1971, 1972, 1974, 1975, 1980), Anderson and De Henau (1980), Anderson and Green (1975, 1976), Bajkov (1929), Bidgood (1972), Clifford (1972a ,1972c), Culp (1978), Daborn (1975b), Donald (1971), Donald and Kooyman (1977), Gallup and Hickman (1975), Gallup et al. (1971), Gates et al. (1987), Hauptman (1958), Johansen (1921), Kerekes (1965), Kerekes and Nursall (1966), Lei and Clifford (1974c), Mayhood (1978), Miller (1952), Mitchell and Prepas (1990), Nursall and Gallup (1971), O'Connell (1978), Paterson et al.

18 Aquatic Invertebrates of Alberta Alberta's Fauna and Pictorial Key The sponge fauna of Alberta is poorly known. Four species are known to occur in the province, but probably there are other species in Alberta. In central Alberta, Ephydatia fluviatilis and Spongilla lacustris are much more common than the other two species. A major revision of the freshwater sponges worldwide is that of Penney and Racek (1968). Species List Ephydatia fluviatilis (Linnaeus) Eunapius fragilis (Leidy) Ephydatia mulleri (Lieberkuhn) Spongilla lacustris (Linnaeus) Some Taxa Not Reported From Alberta Species of Trochospongilla occur widely in North America.

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