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Female and male rufous horneros eject shiny cowbird eggs using a mental template of the size of their own eggs
(Elsevier Science, 2020-09)
Hosts of interspecific brood parasites often evolve antiparasitic defences, like the recognition and rejection of parasite's eggs. Most hosts use differences in coloration and maculation to discriminate between their own ...
A novel method of rejection of brood parasitic eggs reduces parasitism intensity in a cowbird host
(The Royal Society, 2013-03)
The hosts of brood parasitic birds are under strong selection pressure to recognize and remove foreign eggs from their nests, but parasite eggs may be too large to be grasped whole and too strong to be readily pierced by ...
Red-crested cardinal defences against shiny cowbird parasitism
(Brill Academic Publishers, 2012-04)
Avian brood parasites reduce the reproductive success of the host, which favours the evolution of antiparasitic defences, such as aggression towards parasites or rejection of their eggs. The red-crested cardinal, Paroaria ...
Red-crested Cardinals use color and width as cues to reject Shiny Cowbird eggs
(American Ornithologists' Union, 2016-04)
Como parte del proceso coevolutivo entre los parásitos de cría y sus hospedadores, estos últimos han desarrollado diferentes estrategias para discriminar y rechazar los huevos parásitos. Este proceso de reconocimiento y ...
Antiparasitic defenses in hosts of South American cowbirds
(China Ornithological Society, 2013-06)
The cowbirds (Molothrus, Icteridae) are a monophyletic group that includes five extant brood-parasitic species. The Screaming (M. rufoaxillaris), Giant (M. oryzivorus) and Shiny (M. bonariensis) cowbirds range mostly in ...
High Rates of Shiny Cowbird Parasitism on the Brown-and-yellow Marshbird Select for Complementary Host DefensesAltas Tasas de Parasitismo de Molothrus bonariensis sobre Pseudoleistes virescens Seleccionan Defensas Complementarias del Hospedador
(Cooper Ornithological Society, 2013-11)
Hosts of brood parasites may have not developed antiparasitic defenses either because host and parasite are recently sympatric or because costs of potential defenses outweigh their benefits. We studied antiparasitic defenses ...
Microextraction in packed sorbent for determination of sulfonamides in egg samples by liquid chromatography and spectrophotometric detection
(Sociedade Brasileira de Química, 2011)
The present work describes a successful application of microextraction packed sorbent and liquid chromatography with diode array detection (MEPS/LC-DAD) for simultaneous determination of the sulfonamides (sulfacetamide, ...
Respostas da Tilápia do Nilo (Oreochromis niloticus) à Atratividade e Palatabilidade de Ingredientes Utilizados na Alimentação de Peixes
(2000-09-01)
The response of Nile tilapia to the attraction and palatability of 14 ingredients was evaluated. The two-choice method was used, comparing each pelleted ingredient to acontrol diet. It was utilized Four aquaria (750 liters) ...
Can nest predation explain the lack of defenses against cowbird brood parasitism in the Rufous-collared sparrow (Zonotrichia capensis)?¿Puede la depredación de nidos explicar la falta de defensas de Zonotrichia capensis contra el parasitismo de cría de M. Bonariensis?
(American Ornithologists' Union, 2013-07)
Although interspecific avian brood parasitism usually lowers host productivity, some species lack any defense against parasites. We analyzed the effect of parasite egg removal or nest desertion following a parasitism event ...