منابع مشابه
Birds introduced in new areas show rest disorders.
All colonizing individuals have to settle in a novel, conspecific-free environment. The introduction process should be poorly compatible with a good rest. We compared the resting behaviour of radio-tagged house sparrows (Passer domesticus) experimentally translocated into new, conspecific-free areas (introduced individuals, n = 10), with that of translocated sparrows that settled in naturally e...
متن کاملThe Interaction of Native and Introduced Birds in New Zealand
These examples can be taken as typical of what has happened wherever native vegetation has been cleared and replaced by pasture. There has been no competition between native and introduced species, either for food or for living space. All but subsoil species among the native earthworms have died out before the introduced lumbricids became established, and the few subsoil earthworms that have re...
متن کاملToxoplasmosis in three species of native and introduced Hawaiian birds.
Toxoplasma gondii was found in endemic Hawaiian birds, including 2 nene geese (Nesochen sandvicensis), 1 red-footed booby (Sula sula), and an introduced bird, the Erckels francolin (Francolinus erckelii). All 4 birds died of disseminated toxoplasmosis; the parasite was found in sections of many organs, and the diagnosis was confirmed by immunohistochemical staining with anti-T. gondii-specific ...
متن کاملIntroduced birds incompletely replace seed dispersal by a native frugivore
The widespread loss of native species and the introduction of non-native species has important consequences for island ecosystems. Non-native species may or may not functionally replace the role of native species in ecological processes such as seed dispersal. Although the majority of Hawaii's native plants require bird-mediated seed dispersal, only one native frugivore, Omao (Myadestes obscuru...
متن کاملAssessing the risks of introduced chickens and their pathogens to native birds in the Galápagos Archipelago
Poultry production is an important economic activity on inhabited islands of the Galápagos archipelago. There has been a recent surge in both small-scale backyard chickens and larger scale broiler production associated with growth in the human population and the tourist industry. With increased poultry production, concerns have been expressed about the increasing risk of transfer of disease fro...
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ژورنال
عنوان ژورنال: Emu - Austral Ornithology
سال: 1919
ISSN: 0158-4197,1448-5540
DOI: 10.1071/mu919060