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Comparative mapping reveals quantitative trait loci that affect spawning time in coho salmon (Oncorhynchus kisutch) Genet. Mol. Biol.
Araneda,Cristian; Díaz,Nelson F.; Gomez,Gilda; López,María Eugenia; Iturra,Patricia.
Spawning time in salmonids is a sex-limited quantitative trait that can be modified by selection. In rainbow trout (Oncorhynchus mykiss), various quantitative trait loci (QTL) that affect the expression of this trait have been discovered. In this study, we describe four microsatellite loci associated with two possible spawning time QTL regions in coho salmon (Oncorhynchus kisutch). The four loci were identified in females from two populations (early and late spawners) produced by divergent selection from the same base population. Three of the loci (OmyFGT34TUF, One2ASC and One19ASC) that were strongly associated with spawning time in coho salmon (p < 0.0002) were previously associated with QTL for the same trait in rainbow trout; a fourth loci (Oki10)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coho salmon; QTL; Spawning time.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000300019
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Confirmation of the presence of Alsodes pehuenche Cei, 1976 (Anura, Alsodidae) in Chile: morphological, chromosomal and molecular evidence Gayana
Correa,Claudio; Pastenes,Luis; Iturra,Patricia; Calderón,Pilar; Vásquez,Dayana; Lam,Natalia; Salinas,Hugo; Méndez,Marco A.
The presence of Alsodespehuenche in Chile was reported in the year 2010, based on the observation of larvae near the Chilean-Argentinean border, about 3 km east of the northeast corner of the Laguna del Maule (Región del Maule, Chile). The taxonomic history of this species dates from 1965, with the re-discovery of Telmatobius montanus (which was later transferred to the genus Alsodes) in two localities, near the Laguna del Maule and Valle Pehuenche, located in Chile and Argentina, respectively. The literature review shows that the locality of Argentina described in 1965 became the type locality of A. pehuenche, while the Chilean locality was ignored; thus this latter locality continues to be a valid record for A. montanus. In this study we provide...
Tipo: Journal article Palavras-chave: Andes Range; Laguna del Maule; Microendemism; Spiny-chest frog; Valle Pehuenche.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000200006
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Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae) RChHN
Méndez,Marco A.; Soto,Eduardo R.; Correa,Claudio; Veloso,Alberto; Vergara,Eliseo; Sallaberry,Michel; Iturra,Patricia.
Bufo spinulosus has a wide and fragmented range distribution in Chile (18&deg; to 33&deg; S) along altitudinal and latitudinal gradients. Genetic variation was estimated using RAPD (Random Amplified Polymorphic DNA) markers in 10 populations from northern and central Chile. Morphometric and genetic information was analyzed as a function of geographical origin. The correlation between genetic and morphometric differentiation was analyzed by the Mantel test. An increase in body size as a function of latitude was observed. Specimens from El Tatio had the smallest body size and the greatest morphometric divergence. The AMOVA applied to genetic data indicated that 57.85 % of the variance is explained by interregional differences and that 30.12 % of the...
Tipo: Journal article Palavras-chave: Amphibians; Geographic variation; Morphometry; RAPDs; AMOVA.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300014
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