| three new species of the ectoparasitic mites of the genus syringophiloidus kethley, 1970 (acari: syringophilidae) from passeriform birds from slovakia. | three new quill mite species of the genus syringophiloidus kethley, 1970 (acari: syringophilidae) from slovakia are described and figured: s. bombycillae sp. n. from the waxwing bombycilla garrulus (l.) (passeriformes: bombycillidae), s. schoeniclus sp. n. from the reed bunting emberiza schoeniclus l. (passcriformes: emberizidae) and s. montanus sp. n. from the tree sparrow passer monlanus (l.) (passeriformes: ploceidae). a key to all known species of the genus syringophiloidus is given. | 2002 | 12641205 |
| persistence of host defence behaviour in the absence of avian brood parasitism. | the fate of host defensive behaviour in the absence of selection from brood parasitism is critical to long-term host-parasite coevolution. we investigated whether new world bohemian waxwings bombycilla garrulus that are allopatric from brown-headed cowbird molothrus ater and common cuckoo cuculus canorus parasitism have retained egg rejection behaviour. we found that egg rejection was expressed by 100 per cent of bohemian waxwings. our phylogeny revealed that bohemian and japanese waxwings bomby ... | 2011 | 21493623 |
| cryptosporidium spp. in pet birds: genetic diversity and potential public health significance. | to characterize the prevalence and assess the zoonotic transmission burden of cryptosporidium species/genotypes in pet birds in henan, china, 434 fecal samples were acquired from 14 families of birds in pet shops. the overall prevalence of cryptopsoridium was 8.1% (35/434) by the sheather's sugar flotation technique. the cryptosporidium-positive samples were analyzed by dna sequence analysis of the small subunit (ssu) rrna gene. three cryptosporidium species and two genotypes were identified, in ... | 2011 | 21557938 |
| how to reduce the costs of ornaments without reducing their effectiveness? an example of a mechanism from carotenoid-based plumage. | carotenoid-based ornaments are often considered to be honest indicators of individual quality assessed by potential mates. however, males can use a variety of strategies that minimize the amount of costly carotenoids used while retaining the effectiveness of color signaling. birds could do this by altering pigment intake, metabolism, or its presentation to a potential signal receiver. here, we propose a new mechanism of lowering the costs of carotenoid displays in birds: differential allocation ... | 2017 | 27194821 |
| active hiding of social information from information-parasites. | coevolution between pairs of different kind of entities, such as providers and users of information, involves reciprocal selection pressures between them as a consequence of their ecological interaction. pied flycatchers (ficedula hypoleuca) have been shown to derive fitness benefits (larger clutches) when nesting in proximity to great tits (parus major), presumably because they this way discover and obtain information about nesting sites. tits suffer from the resulting association (smaller clut ... | 2014 | 24580842 |
| [the waxwing bombycilla garrulus as a frugivorous feeding specialist (author's transl)]. | eight waxwings, bombycilla garrulus, were fed exclusively with vegetable food for periods of 10-18 days. in contrast to other song birds, they maintained or increased body weight during that time, or reduced it only moderately. thus the waxwing is a feeding specialist which can subsist at least temporarily on a totally vegetable diet. | 1976 | 991992 |