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Showing 1 to 6 of 6 for “"gill rakers"”.
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Measurements of the branchial sieve of sardine (Sardinops sagax ocellatus) from the west and south coasts of southern Africa
… upwelling ecosystem. Morphometric measurements (gill arch length and gill raker spacing) and counts (number of gill rakers) of branchial sieves on the left side of the first gill arch were taken to determine whether the sardine from these regions have different branchial sieve structures.
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Trophic polymorphism in the Arctic charr (Salvelinnus alpinus (L.)) of Lochs Rannoch, Ericht and Tay, Scotland
… Thus one form had a relatively small head, short gill rakers and consumed only benthic invertebrates, whilst the other had a relatively large head and consumed benthic invertebrates until a size of 16cm at sizes above which it consumed other fish. These two forms were termed the benthivorous and …
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Food Selectivity of Bigmouth Buffalo (Ictiobus cyprinellus, Valenciennes) in Lake Poinsett, South Dakota
… to be dependent on the morphology of the gill rakers for all organisms except calanoid copepods which appeared to avoid ingestion.
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Assessment of the population structure of the South African sardine Sardinops sagax using a multi-method approach and the morphological and molecular characterization of a stock-discriminating digenean parasite biotag of the genus Cardiocephaloides
… variability in a single characteristic (e.g. gill raker morphology and meristics, body shape, otolith shape, vertebral count, parasite loads), but the application of multiple stock identification methods to the same individual fish has been recommended in order to maximize the likelihood of …
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Life history of marine threespine stickleback in Oyster Lagoon, British Columbia
… and partially plated fish have fewer and shorter gill rakers than high plated fish, and females of this group have wider mouths than high plated females. Morphologically, the low and partially plated fish are more similar to stream resident sticklebacks than are their high plated counterparts. …
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Sexual Dimorphism and Trophic Trait Evolution in the Carolina Bay Fundulus Complex
… interpretation of shape evolution. I found that gill raker length and density, key trophic traits in fish, exhibited similar patterns of divergence and convergence in Fundulus sp. from Carolina Bays and streams as are seen for body shape. I further found that body shape divergence between Lake …