Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 3 of 3 for “"Trophic polymorphism"”.
-
Effects of competition, disturbance and productivity on the dynamics of inducible trophic polymorphism in tetrahymena vorax
Inducible trophic polymorphism enables organisms to alter their trophic level when facing environmental changes, and therefore can ameliorate the intensity of competition. The freshwater ciliated protist Tetrahymena vorax was found to have three distinct phenotypic morphs with two trophic levels. …
-
Trophic polymorphism in the Arctic charr (Salvelinnus alpinus (L.)) of Lochs Rannoch, Ericht and Tay, Scotland
Morphometric analysis of Loch Rannoch charr indicated that in addition to the pelagic morph previously described, the benthic morph previously described consists of two distinct morphs. Thus one form had a relatively small head, short gill rakers and consumed only benthic invertebrates, whilst the …
-
Reproductive Isolation and Genetic Divergence in a Young "Species Flock" of Pupfishes (Cyprinodon sp.) from San Salvador Island, Bahamas
The study of the process of speciation is instrumental to understanding the species diversity observed today. Diverging populations are intriguing, because speciation has not reached an endpoint, yet the process that may eventually lead to distinct species can be studied. Systems that contain many …