Filters: Tags: Predation (X)
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Concern over the status of species associated with prairie dog colonies has increased with the recent proposed listing of black-tailed prairie dogs (Cynomys ludovicianus). We monitored burrowing owl (Athene cunicularia) populations and prairie dog densities in 17 black-tailed prairie dog colonies in the Nebraska panhandle between 1990 and 1996. All prairie dog colonies were controlled at least once during the study. We observed a 63% decline in nesting pairs of burrowing owls and significant declines in burrow densities. Results indicated a time lag in owl response to changes in active burrow densities. However, in the later years of the study when burrow densities were lowest, owl numbers were positively correlated...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Athene cunicularia,
Cynomys ludovicianus,
Great Plains,
Journal of Wildlife Management,
Nebraska,
Abstract?Larval western toads (Bufo boreas) are known to exhibit antipredator behavior in response to both chemical alarm cues released from injured conspecifics and chemical cues of predatory invertebrates. In this study, we tested whether long-term exposure to predator and alarm cues resulted in an adaptive shift in life history characteristics of the toads. We raised groups of tadpoles in the presence of: (1) predatory backswimmers (Notonecta spp.) that were fed toad tadpoles, (2) nonpredatory water boatman (Corixidae), and (3) chemical alarm cues of injured conspecifics. Tadpoles raised in the presence of both chemical alarm cues and cues of predators fed tadpoles metamorphosed in significantly shorter time...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Bufo boreas,
Journal of Chemical Ecology,
Predation,
alarm cues,
amphibians,
Categories: Publication;
Types: Citation;
Tags: Acyrthosiphon pisum,
Aphididae,
D 04659 Insects; Z 05199 Feeding,
Ecology Abstracts; Entomology Abstracts,
Geocoris punctipes,
Categories: Publication;
Types: Citation;
Tags: Chrysomelidae,
Coccinellidae,
Coleomegilla maculata,
Coleoptera,
Entomology Abstracts; Ecology Abstracts,
Categories: Publication;
Types: Citation;
Tags: Aves,
D 04671 Birds,
Ecology Abstracts,
USA, Maine,
forests,
Categories: Publication;
Types: Citation;
Tags: ASFA 1: Biological Sciences & Living Resources; ASFA Aquacul,
Anguilla anguilla,
Cyprinus carpio,
Germany,
Phalacrocorax carbo,
Categories: Publication;
Types: Citation;
Tags: D 04672 Mammals,
Ecology Abstracts,
Mustela nivalis,
Poland,
Rodentia,
Categories: Publication;
Types: Citation;
Tags: Aves,
D 04671 Birds,
Ecology Abstracts,
forests,
habitat fragmentation,
Categories: Publication;
Types: Citation;
Tags: Alosa pseudoharengus,
Clupeidae,
Coregonus hoyi,
SW 0850 Lakes; Q1 01442 Population dynamics,
Salmonidae,
Categories: Publication;
Types: Citation;
Tags: Canada, Northwest Territories,
D 04672 Mammals,
Dicrostonyx groenlandicus,
Ecology Abstracts,
Microtus oeconomus,
Categories: Publication;
Types: Citation;
Tags: ASFA 1: Biological Sciences & Living Resources; ASFA Aquacul,
Brachyura,
Chionoecetes,
Crustacean fisheries,
IN, Bering Sea,
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