Specialists nectarivorous birds (Cinnyris osea) steal nectar whereas omnivourous birds are pollen transfer vectors of Anagyris foetida
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چکیده
منابع مشابه
Are shrubland birds edge specialists?
In studies of forest fragmentation, birds of scrubby, early-successional habitats are considered edge specialists. Because these birds are assumed to thrive in fragmented, edge-dominated areas, their landscape ecology has received little attention from ecologists. With populations of shrubland birds declining throughout the eastern United States, the question of whether or not these birds reall...
متن کاملWater management in nectar-feeding birds.
NECTARIVORY IS WIDESPREAD in birds, but best known in three unrelated families on different continents: the American hummingbirds, Australasian honeyeaters, and the sunbirds of Africa and Asia. Bird pollinators require substantial nectar rewards and their flowers produce copious nectar, which is, however, more dilute than that of insect-pollinated flowers. On average, the nectars of bird flower...
متن کاملBirds are islands for parasites.
Understanding the mechanisms driving the extraordinary diversification of parasites is a major challenge in evolutionary biology. Co-speciation, one proposed mechanism that could contribute to this diversity is hypothesized to result from allopatric co-divergence of host-parasite populations. We found that island populations of the Galápagos hawk (Buteo galapagoensis) and a parasitic feather lo...
متن کاملEffects of nicotine on the digestive performance of nectar-feeding birds reflect their relative tolerance to this alkaloid.
The paradox of secondary metabolites, toxic defence compounds produced by plants, in nectar and fruits is well known. Deterrence of feeding by nectarivorous and frugivorous birds is better understood than the effect of these chemicals on the digestive performance of birds. Digestive parameters such as transit time and sugar assimilation are important in assessing nutrient utilization and deterr...
متن کاملFree-ranging birds Captive birds Songbirds Free-ranging birds Captive birds Waterfowl Free-ranging birds Captive birds Herons and allies Free-ranging birds Captive birds Pigeons and doves Free-ranging birds Captive birds
Cause Chlamydiosis refers to an infection with organisms of the genus Chlamydia sp., which are bacteria that live within animal cells. Chlamydia psittaci is the species generally associated with this disease in birds. The severity of the disease differs by the strain of C. psittaci and the susceptibility of different species of birds. As a result, chlamydiosis may range from an inapparent infec...
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ژورنال
عنوان ژورنال: Journal of Pollination Ecology
سال: 2018
ISSN: 1920-7603
DOI: 10.26786/1920-7603(2018)9