The influence of the substratum on populaton increase and habitat selection by Lymnaea natalensis Krs. and Bulinus (B.) tropicus (Krs.) (Mollusca: Basommatophora)

Publication date: 1975

  • Softcover
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Seller: ConchBooks, Harxheim, GermanyConchBooks

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AbeBooks seller since March 1, 2007

Softcover

Condition: Used

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Item description from seller

In the course of an extensive survey of the freshwater snails in the Republic of South Africa, it was noticed that the most commonly occurring species were usually associated with habitats containing a muddy substratum. Two snail species, Bulinus (Bulinus) tropicus Krs. and Lymnaea natalensis Krs. and 5 substratum types were selected. The observations were made in an outdoor river model and in an outdoor aquarium. The criteria chosen for testing the suitability of the substratum were the population statistics, from which ability to increase (rc) was calculated, growth rate and the selecting ability of the snails when given a random choice between the different substratum types. For L. natalensis the succession of rc values on the different substrata were mud, stones, sand, gravel and fine sand but for B. tropicus the only large difference recorded was between the gravel and the other groups. The growth rates on the different substrata for both species parallelled the rc sequence recorded for L. natalensis. B. tropicus appeared to be more dependent on the substratum and to have a better selecting ability. 30 pp., 15 figs, br. 8.…

Seller Inventory # W18473

Bibliographic details

Title
The influence of the substratum on populaton increase and habitat selection by Lymnaea natalensis Krs. and Bulinus (B.) tropicus (Krs.) (Mollusca: Basommatophora)
Author
Combrinck, C. & Eeden, J. A. Van
Publication year
1975
Binding
Soft cover

ConchBooks

Harxheim, Germany

3-star seller

AbeBooks seller since March 1, 2007

Shipping rates from Germany to U.S.A.

Item25 to 45 business days8 to 14 business days
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Store description

Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

Specialty

Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology

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ConchBooks

Germany