Genetic diversity and connectivity of southern right whales (eubalaena australis) found in the brazil and chile-peru wintering grounds and the south georgia (islas georgias del sur...

• Autores: Carroll, Emma L; Ott, Paulo H.; McMillan, Louise F.; Vernazzani, Bárbara Galletti; Neveceralova, Petra; Vermeulen, Els; Gaggiotti, Oscar E.; Andriolo, Artur; Scott Baker, C.; Bamford, Connor; Best, Peter; Cabrera, Elsa; Calderan, Susannah; Chirife, Andrea; Fewster, Rachel M.; Flores, Paulo A. C.; Frasier, Timothy; Freitas, Thales R.O.; Groch, Karina; Hulva, Pavel; Kennedy, Amy; Leaper, Russell; Leslie, Matthew S.; Moore, Michael; Oliveira, Larissa; Seger, Jon; Stepien, Emilie N.; Valenzuela, Luciano Oscar; Zerbini, Alexandre; Jackson, Jennifer A.
• Año de publicación: 2020
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: CONNECTIVITY; GENE FLOW; MIGRATION; POPULATION STRUCTURE
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

As species recover from exploitation, continued assessments of connectivity and population structure are warranted to provide information for conservation and management. This is particularly true in species with high dispersal capacity, such as migratory whales, where patterns of connectivity could change rapidly. Here we build on a previous long-term, large-scale collaboration on southern right whales (Eubalaena australis) to combine new (nnew) and published (npub) mitochondrial (mtDNA) and microsatellite genetic data from all major wintering grounds and, uniquely, the South Georgia (Islas Georgias del Sur: SG) feeding grounds. Specifically, we include data from Argentina (npub mtDNA/microsatellite = 208/46), Brazil (nnew mtDNA/microsatellite = 50/50), South Africa (nnew mtDNA/microsatellite = 66/77, npub mtDNA/microsatellite = 350/47), Chile-Peru (nnew mtDNA/ microsatellite = 1/1), the Indo-Pacific (npub mtDNA/microsatellite = 769/126), and SG (npub mtDNA/ microsatellite = 8/0, nnew mtDNA/microsatellite = 3/11) to investigate the position of previously unstudied habitats in the migratory network: Brazil, SG, and Chile-Peru. These new genetic data show connectivity between Brazil and Argentina, exemplified by weak genetic differentiation and the movement of 1 genetically identified individual between the South American grounds. The single sample from Chile-Peru had an mtDNA haplotype previously only observed in the Indo-Pacific and had a nuclear genotype that appeared admixed between the Indo-Pacific and South Atlantic, based on genetic clustering and assignment algorithms. The SG samples were clearly South Atlantic and were more similar to the South American than the South African wintering grounds. This study highlights how international collaborations are critical to provide context for emerging or recovering regions, like the SG feeding ground, as well as those that remain critically endangered, such as Chile-Peru.
Fil: Carroll, Emma L. University of St. Andrews; Reino Unido
Fil: Ott, Paulo H.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: McMillan, Louise F.. University Of Wellington; Nueva Zelanda
Fil: Vernazzani, Bárbara Galletti. Centro de Conservación Cetacea; Chile
Fil: Neveceralova, Petra. Charles University; República Checa
Fil: Vermeulen, Els. University Of Pretoria; Sudáfrica
Fil: Gaggiotti, Oscar E.. University of St. Andrews; Reino Unido
Fil: Andriolo, Artur. Universidade Federal de Juiz de Fora; Brasil
Fil: Scott Baker, C.. State University of Oregon; Estados Unidos
Fil: Bamford, Connor. British Antarctic Survey; Reino Unido
Fil: Best, Peter. University Of Pretoria; Sudáfrica
Fil: Cabrera, Elsa. Centro de Conservación Cetacea; Chile
Fil: Calderan, Susannah. Scottish Association For Marine Science; Reino Unido
Fil: Chirife, Andrea. Universidad Andrés Bello; Chile
Fil: Fewster, Rachel M.. University of Auckland; Nueva Zelanda
Fil: Flores, Paulo A. C.. No especifíca;
Fil: Frasier, Timothy. Saint Marys University; Canadá
Fil: Freitas, Thales R.O.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Groch, Karina. Instituto Australis; Brasil
Fil: Hulva, Pavel. Charles University; República Checa
Fil: Kennedy, Amy. No especifíca;
Fil: Leaper, Russell. No especifíca;
Fil: Leslie, Matthew S.. No especifíca;
Fil: Moore, Michael. No especifíca;
Fil: Oliveira, Larissa. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Seger, Jon. University of Utah; Estados Unidos
Fil: Stepien, Emilie N.. University Aarhus; Dinamarca
Fil: Valenzuela, Luciano Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Zerbini, Alexandre. University of Washington; Estados Unidos
Fil: Jackson, Jennifer A.. No especifíca;