Results 261 to 270 of about 96,797 (305)
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Intra- and interspecific host discrimination in two closely related egg parasitoids
Oecologia, 1994Intraspecific host discrimination is frequently found in solitary parasitoids, but interspecific host discrimination, where female parasitoids recognize hosts already parasitized by females of other species, is rare. This particular behaviour appears to be adaptive only under specific circumstances.
Joan, van Baaren +2 more
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Experimental support for the use of egg uniformity in parasite egg discrimination by cuckoo hosts
Behavioral Ecology and Sociobiology, 2008Common cuckoo (Cuculus canorus) parasitism drastically reduces the reproductive success of their hosts and selects for host discrimination of cuckoo eggs. In a second stage of anti-parasite adaptation, once cuckoos can lay eggs that mimic those of their hosts, a high uniformity of host egg appearance within a clutch may favour cuckoo egg discrimination.
Csaba Moskát +4 more
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Discrimination of fish egg quality and viability by Raman spectroscopy
Anal. Methods, 2014Egg or embryo quality is typically assessed by viewing the egg morphology and by observing the cleavage rate of the embryo.
Mika Ishigaki +2 more
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Online Discriminant Model of Blood Spot Eggs Based on Spectroscopy
Journal of Food Process Engineering, 2016AbstractTo explore the best method for online detection of blood spot eggs, fiber‐optic spectrometer was used to collect the transmission spectra of eggs. Three different kinds of wavebands were extracted using competitive adaptive reweighed sampling (CARS), interval partial least squares (IPLS) and successive projections algorithm (SPA), respectively.
Zhi‐Hui Zhu +5 more
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Egg Discrimination and Sex‐Specific Pecking Behaviour in Parasitic Cowbirds
Ethology, 2006AbstractWe studied egg‐pecking behaviour in males and females of three cowbird species: the shiny cowbird (Molothrus bonariensis), a host generalist brood parasite, the screaming cowbird (M. rufoaxillaris), a host specialist brood parasite, and the bay‐winged cowbird (Agelaioides badius), a non‐parasitic species. We conducted three experiments in which
Paulo E. Llambías +2 more
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Zoologischer Anzeiger, 2020
Abstract Although egg-pods and egg morphology represent useful features for phylogenetic purposes, they are less well known in Pamphagidae when compared with other Orthoptera groups of Caelifera, such as Acrididae. Breeding in the lab some specimens of Acinipe deceptoria (Bolivar, 1878) and Acinipe segurensis (Bolivar, 1908), two sympatric species ...
Nicolás Ubero-Pascal +3 more
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Abstract Although egg-pods and egg morphology represent useful features for phylogenetic purposes, they are less well known in Pamphagidae when compared with other Orthoptera groups of Caelifera, such as Acrididae. Breeding in the lab some specimens of Acinipe deceptoria (Bolivar, 1878) and Acinipe segurensis (Bolivar, 1908), two sympatric species ...
Nicolás Ubero-Pascal +3 more
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Bound water is a quality discriminant of dried egg-pasta
Journal of Thermal Analysis and Calorimetry, 2007Egg-pasta is a very popular food in Italy and its appreciation is growing in Europe and in the United States. In this work, the bound water has been demonstrated to be a quality discriminant parameter to distinguish the low-temperature dried egg-pasta with respect to the high-temperature dried egg-pasta.
MATERAZZI, Stefano +4 more
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Canadian Journal of Zoology, 2004
In the absence of brood parasitism in North America, black-billed magpies, Pica hudsonia (Sabine, 1822), and yellow-billed magpies, Pica nuttalli (Audubon, 1837), may have retained egg-discrimination behaviour that evolved in Eurasian magpies, Pica pica (L., 1758), in response to parasitism by Old World cuckoos.
Underwood, TJ, Sealy, SG, McLaren, CM
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In the absence of brood parasitism in North America, black-billed magpies, Pica hudsonia (Sabine, 1822), and yellow-billed magpies, Pica nuttalli (Audubon, 1837), may have retained egg-discrimination behaviour that evolved in Eurasian magpies, Pica pica (L., 1758), in response to parasitism by Old World cuckoos.
Underwood, TJ, Sealy, SG, McLaren, CM
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Egg Discrimination and Egg-Color Variability in the Northern Masked Weaver
1998Abstract Many species of the Ploceus weaverbirds of Africa and Asia exhibit a dramatic degree of intraspecific egg-color variability (Mackworth-Praed and Grant 1955; Moreau 1960; Freeman 1988; W. Jackson, pers. obs.). Within a species, eggs can range from white to blue to brown and can be immaculate or have various types of speckling ...
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Evolution, 1986
The Rufous Hornero (Furnarius rufus) is an important host of the brood parasitic Shiny Cowbird (Molothrus bonariensis) in Uruguay, but not in nearby Buenos Aires Province, Argentina. Eggs of the Shiny Cowbird are extremely variable in size, and horneros eject cowbird eggs with widths less than about 88% of the widths of their own eggs.
Paul, Mason, Stephen I, Rothstein
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The Rufous Hornero (Furnarius rufus) is an important host of the brood parasitic Shiny Cowbird (Molothrus bonariensis) in Uruguay, but not in nearby Buenos Aires Province, Argentina. Eggs of the Shiny Cowbird are extremely variable in size, and horneros eject cowbird eggs with widths less than about 88% of the widths of their own eggs.
Paul, Mason, Stephen I, Rothstein
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