Interactions between Two Poeciliid Fishes (Gambusia holbrooki and Heterandria formosa) and Their Prey in a Florida Marsh

In this study, we determine (1) the effect of G. holbrooki on H. formosa, (2) the effect of H. formosa on G. holbrooki, and (3) the influence of these fish alone and in combination on the invertebrate prey assemblage. To experiment was conducted in a marsh that is part of a humanmade impoundment in...

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Bibliographic Details
Published in:Copeia 1994-05, Vol.1994 (2), p.516-520
Main Authors: Schaefer, Jacob F., Heulett, Steven T., Farrell, Terence M.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Biomass
Ecological competition
Ecological genetics
Evolution
Fish
Freshwater
Freshwater fishes
Fundamental and applied biological sciences. Psychology
Gambusia holbrooki
Heterandria formosa
Predation
Shorter Contributions: Ichthyology
Statistical significance
Vertebrata
Wetland ecology
Zooplankton
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Summary:In this study, we determine (1) the effect of G. holbrooki on H. formosa, (2) the effect of H. formosa on G. holbrooki, and (3) the influence of these fish alone and in combination on the invertebrate prey assemblage. To experiment was conducted in a marsh that is part of a humanmade impoundment in Lake Woodruff National Wildlife Refuge near Deleon Springs, Florida. This marsh is near the center of the St. Johns River basin. Thick emergent and submergent vegetation grows in much of the marsh.
ISSN:0045-8511
1938-5110
DOI:10.2307/1447002