Behaviors of Southwestern Native Fishes in Response to Introduced Catfish Predators
نویسندگان
چکیده
منابع مشابه
Bullfrogs : Introduced Predators in Southwestern Wetlands
Fig.!. The worm has turned! In this unstaged photograph taken at Parker Canyon Lake, Cochise County, Arizona. 1964, an intro duced bullfrog is swallowing a Mexican garter snake. normally a frog-eating species. Such preda tion appears to be destroying remaining populations of this garter snake in the United States. I n the American Southwest, much of the native fish fauna is facing extinction ...
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Non-consumptive effects of predators on each other and on prey populations often exceed the effects of direct predation. These effects can arise from fear responses elevating glucocorticoid (GC) hormone levels (predator stress hypothesis) or from increased vigilance that reduces foraging efficiency and body condition (predator sensitive foraging hypothesis); both responses can lead to immunosup...
متن کاملHow fishes try to avoid predators
Fishes are delicious. At least herons, kingfishers, mergansers, and all marine birds seem to think so. Marine mammals seem to think so. Minks and bears seem to think so. The big fishes themselves concur. As a taxonomic group, fishes face one of the most diverse arrays of predators imaginable. Threat comes from below and from above, during the day and at night, and at almost all stages of life. ...
متن کاملEffects of an introduced piscivorous fish on native benthic fishes in a coastal river
1. We used field surveys to compare the density and mesohabitat-scale distribution of the native coastrange sculpin (Cottus aleuticus) and the prickly sculpin (C. asper) in coastal rivers in north-western California, U.S.A., with and without an introduced piscivorous fish, the Sacramento pikeminnow, Ptychocheilus grandis. We also measured mortality of tethered prickly sculpin in a field experim...
متن کاملExpanded description of Lamproglena monodi (Copepoda: Lernaeidae), parasitizing native and introduced fishes in Brazil.
An occurrence of the copepod Lamproglena monodi Capart, 1944, parasitizing freshwater fishes in Brazil is presented, along with new morphological data. This crustacean was originally described parasitizing several cichlids in Africa. In the present study, the crustaceans were collected from the body surface and gills of two fish species native to Brazil [Astronotus ocellatus (Agassiz, 1831) and...
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ژورنال
عنوان ژورنال: Journal of Fish and Wildlife Management
سال: 2013
ISSN: 1944-687X
DOI: 10.3996/092012-jfwm-084