Extensive karyotype variability of African fish genus Nothobranchius (Cyprinodontiformes)
نویسندگان
چکیده
منابع مشابه
Divergent karyotypes of the annual killifish genus Nothobranchius (Cyprinodontiformes, Nothobranchiidae)
Karyotypes of two species of the African annual killifish genus Nothobranchius Peters, 1868, Nothobranchius brieni Poll, 1938 and Nothobranchius sp. from Kasenga (D.R. Congo) are described. Both species displayed diploid chromosome number 2n = 49/50 for males and females respectively with multiple-sex chromosome system type X1X2Y/X1X1X2X2. The karyotypes of studied species are considerably diff...
متن کاملHistorical biogeography of the livebearing fish genus Poeciliopsis (Poeciliidae: Cyprinodontiformes).
To assess the historical biogeography of freshwater topminnows in the genus Poeciliopsis, we examined sequence variation in two mitochondrial genes, cytochrome b (1140 bp) and NADH subunit 2 (1047 bp). This widespread fish genus is distributed from Arizona to western Colombia, and nearly half of its 21 named species have distributions that border on the geologically active Trans-Mexican Volcani...
متن کاملExtensive Karyotype Reorganization in the Fish Gymnotus arapaima (Gymnotiformes, Gymnotidae) Highlighted by Zoo-FISH Analysis
The genus Gymnotus (Gymnotiformes) contains over 40 species of freshwater electric fishes exhibiting a wide distribution throughout Central and South America, and being particularly prevalent in the Amazon basin. Cytogenetics has been an important tool in the cytotaxonomy and elucidation of evolutionary processes in this genus, including the unraveling the variety of diploid chromosome number (...
متن کاملInvestigation of biological and ecological characteristics of Bluefin Notho Nothobranchius rachovii Ahl, 1926 (Cyprinodontiformes: Nothobranchiidae) as one of the freshwater aquarium fish: A review
Ornamental aquaculture is a leading and profitable industry in Iran. One of the essential needs for the development of this industry is the introduction of popular species. Therefore, it is necessary for experts and breeders of ornamental aquatics to introduce important ornamental species around the world and provide their ecological and biological characteristics, and reproduction techniques. ...
متن کاملExtremely short lifespan in the annual fish Nothobranchius furzeri.
Evolutionary theories of senescence postulate that lifespan is determined by the age-dependent decrease in the effects of natural selection. Factors that influence survival and reproduction at early life stages have a larger impact on fitness than factors that influence later life stages. According to these views, selection for rapid sexual maturation and a steep age-dependent decrease in fitne...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Comparative Cytogenetics
سال: 2018
ISSN: 1993-078X,1993-0771
DOI: 10.3897/compcytogen.v12i3.25092