Evidence for viable, non-clonal but fatherless Boa constrictors
| العنوان: | Evidence for viable, non-clonal but fatherless Boa constrictors |
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| المؤلفون: | Coby Schal, Warren Booth, Daniel H. Johnson, Edward L. Vargo, Sharon Moore |
| المصدر: | Biology Letters. 7:253-256 |
| بيانات النشر: | The Royal Society, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Male, Evolutionary Biology, Lineage (genetic), biology, Offspring, Parthenogenesis, Chromosome, Zoology, Vertebrate, Asexual reproduction, Sex Determination Processes, biology.organism_classification, DNA Fingerprinting, Agricultural and Biological Sciences (miscellaneous), Boidae, biology.animal, Animals, Female, Boa constrictor, General Agricultural and Biological Sciences, Microsatellite Repeats |
| الوصف: | Parthenogenesis in vertebrates is considered an evolutionary novelty. In snakes, all of which exhibit genetic sex determination with ZZ : ZW sex chromosomes, this rare form of asexual reproduction has failed to yield viable female WW offspring. Only through complex experimental manipulations have WW females been produced, and only in fish and amphibians. Through microsatellite DNA fingerprinting, we provide the first evidence of facultative parthenogenesis in a Boa constrictor , identifying multiple, viable, non-experimentally induced females for the first time in any vertebrate lineage. Although the elevated homozygosity of the offspring in relation to the mother suggests that the mechanism responsible may be terminal fusion automixis, no males were produced, potentially indicating maternal sex chromosome hemizygosity (WO). These findings provide the first evidence of parthenogenesis in the family Boidae (Boas), and suggest that WW females may be more common within basal reptilian lineages than previously assumed. |
| تدمد: | 1744-957X 1744-9561 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fff9ab60279353644ce026c3649e131Test https://doi.org/10.1098/rsbl.2010.0793Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8fff9ab60279353644ce026c3649e131 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1744957X 17449561 |
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