Now showing items 1-10 of 204
Past exploitation of California sea lions did not lead to a genetic bottleneck in the Gulf of California
(Ciencias Marinas, 2010)
Human exploitation can lead to genetic bottlenecks associated with reduced genetic variability and lower fitness. The population of California sea lions (Zalophus californianus) in the Gulf of California, Mexico, was hunted ...
Genetic structure and evidence of anthropogenic effects on wild populations of two neotropical catfishes: Baselines for conservation
Genetic diversity and structure of Pseudoplatystoma corruscans and P. reticulatum, large migratory SouthAmerica catfishes, where overfishing and the construction of numerous dams in their feeding and reproducing areas are ...
Genetic diversity of Brazilian Brahman cattle by pedigree analysis
The objective of this work was to evaluate the genetic diversity of Brahman cattle in Brazil with pedigree analysis. Genealogical records of a subpopulation were used considering all pedigree information (Pt) and the ...
Evidence of bottleneck effect on hepatitis C virus transmission between a couple under interferon based therapy
Issues on the correlation of viral genetic diversity and treatment response to the hepatitis C infection remain uncertain. The bottleneck effect dictates the characteristics of the viral population that will establish the ...
Genetic diversity and conservation status of managed vicuña (Vicugna vicugna) populations in Argentina
The vicuña (Vicugna vicugna) was indiscriminately hunted for more than 400 years and, by the end of 1960s, it was seriously endangered. At that time, a captive breeding program was initiated in Argentina by the National ...
Evidence of a genetic bottleneck in an El Nino affected population of South American fur seals, Arctocephalus australis
(CAMBRIDGE UNIV PRESS, 2009)
The South American fur seal, Arctocephalus australis, was one of the earliest otariid seals to be exploited by humans: at least 6000 years ago on the Atlantic coast and 4000 on the Pacific coast of South America. More than ...
Reduced soybean photosynthetic nitrogen use efficiency associated with evolutionary genetic bottlenecks
(Csiro Publishing, 2016-08)
Soybean has a narrow genetic base thought to limit future yield genetic gains. However, there is no evidence whether this reduction in genetic diversity correlates with diversity loss for any yield trait. We tested how ...
Population genetics of the endangered Crowned Solitary Eagle (Buteogallus coronatus) in South America
The Crowned Solitary Eagle (Buteogallus coronatus) is one of the rarest and most severely threatened birds of prey in the Neotropical region. We studied levels of neutral genetic diversity, population structure, and the ...
Population Genetic Structure Of An Estuarine And A Reef Fish Species Exploited By Brazilian Artisanal Fishing
(Inst Ciencias Mar BarcelonaBarcelona, 2016)
Innovative molecular approach to the identification of Colossoma macropomum and its hybrids
Tambaqui (Colossoma macropomum) is the fish species most commonly raised in the Brazilian fish farms. The species is highly adaptable to captive conditions, and is both fast-growing and relatively fecund. In recent years, ...