Results 101 to 110 of about 28,232 (129)
Facultative Parthenogenesis in California Condors. [PDF]
Journal of Heredity, 2021 AbstractParthenogenesis is a relatively rare event in birds, documented in unfertilized eggs from columbid, galliform, and passerine females with no access to males. In the critically endangered California condor, parentage analysis conducted utilizing polymorphic microsatellite loci has identified two instances of parthenogenetic development from the ...
Jeanette C Papp +2 more
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Discovery of facultative parthenogenesis in a new world crocodile [PDF]
Biology Letters, 2023 Over the past two decades, there has been an astounding growth in the documentation of vertebrate facultative parthenogenesis (FP). This unusual reproductive mode has been documented in birds, non-avian reptiles—specifically lizards and snakes—and elasmobranch fishes.
Mark A Davis +2 more
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Facultative parthenogenesis discovered in wild vertebrates [PDF]
Biology Letters, 2012 Facultative parthenogenesis (FP)—asexual reproduction by bisexual species—has been documented in a variety of multi-cellular organisms but only recently in snakes, varanid lizards, birds and sharks. Unlike the approximately 80 taxa of unisexual reptiles, amphibians and fishes that exist in nature, FP has yet to be documented in the wild ...
Joseph R. Mendelson +2 more
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New insights on facultative parthenogenesis in pythons [PDF]
Biological Journal of the Linnean Society, 2014 Todd A Castoe, Warren Booth
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Facultative deuterotokous parthenogenesis in Callosobruchus maculatus
Zoologischer Anzeiger, 2021Abstract The seed beetle, Callosobruchus maculatus (Coleoptera: Chrysomelidae), is a severe cosmopolitan pest of various stored legumes. Since no parthenogenesis has been reported in the genus Callosobruchus, here we report the evidence of a rare event of deuterotokous parthenogenesis in this species.
Azam Amiri, Ali R. Bandani
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Current Biology
Ellie Smith and David Shuker introduce facultative parthenogenesis, the ability of organisms to alternate between sexual and asexual reproduction.
David Shuker
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Ellie Smith and David Shuker introduce facultative parthenogenesis, the ability of organisms to alternate between sexual and asexual reproduction.
David Shuker
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Facultative parthenogenesis and sex-ratio evolution
Evolutionary Ecology, 1987Phenotypic models of selection are used to determine the effect of facultative parthenogenesis on the production of males in a spatially variable environment when (i) sex determination is under strict genetic control, and (ii) when sex may be environmentally determined.
Curtis M Lively
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Cytotype stability, facultative apomixis and geographical parthenogenesis in Ranunculus kuepferi (Ranunculaceae). [PDF]
Annals of Botany, 2010 Asexual organisms are more widespread in previously glaciated areas than their sexual relatives ('geographical parthenogenesis'). In plants, this pattern is probably dependent on reproductive isolation and stability of cytotypes within their respective distribution areas. Both partial apomixis and introgressive hybridization potentially destabilize the
Elvira Hörandl
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Facultative Parthenogenesis in Collembola (Insecta)
Nature, 1960PARTHENOGENESIS in insects is well known, and its occurrence in the class is fairly widespread. In the order Collembola (the springtails) its presence has been suggested on rather disputable grounds and then afterwards denied on more than one occasion1.
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Facultative Parthenogenesis in Vertebrates: Reproductive Error or Chance?
Sexual Development, 2008Parthenogenesis, the development of an embryo from a female gamete without any contribution of a male gamete, is very rare in vertebrates. Parthenogenetically reproducing species have, so far, only been found in the Squamate reptiles (lizards and snakes).
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