Consulta: subjectFacets:"Relatedness"
Registros recuperados: 4
Data/hora: 01/06/2024 17:21:29

Allozyme variation and sociogenetic structure of Polistes satan Bequaert 1940 colonies (Hymenoptera, Vespidae)
Provedor de dados: 74
Autores: Gaspar,Jane Cristina Wehren; López-Uribe,Margarita María; Del Lama,Marco Antônio.
We collected 40 colonies of the wasp Polistes satan in November 1993 (Population A = 23 colonies) and October 1995 (Population B = 17 colonies) from the town of Delfinopólis in the Brazilian state of Minas Gerais. Pupae from these nests were used to assess allozyme variation and genetic relatedness among nestmates. Of the 24 gene loci sampled six showed allozyme polymorphism (Est-2, Pgm-1, 6Pgd, Hk-1, Idh and Pep-A) and all loci except Idh were at Hardy-Weinberg equilibrium. Populations A and B showed distinct intra-loci heterozygosities, but similar average heterozygosity over all loci. Significant inter-population differentiation (Fst = 0.051; p &lt; 0.01) was detected, probably due to genetic drift driven by bottlenecking that occurred due to the first...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allozymes; Gene variation; Polistes satan; Relatedness; Wasps.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300028

Evidence of high inbreeding in a population of the endangered giant anteater, Myrmecophaga tridactyla (Myrmecophagidae), from Emas National Park, Brazil
Provedor de dados: 74
Autores: Collevatti,Rosane G.; Leite,Kelly C.E.; Miranda,Guilherme H.B. de; Rodrigues,Flavio H.G.
We report the genetic structure, relatedness and mating structure of a population of the endangered giant anteater Myrmecophaga tridactyla Linnaeus, 1758 in the Emas National Park, Brazil, based on variability at five microsatellite loci. Additionally, we addressed the hypothesis that the M. tridactyla population studied has low levels of polymorphism and high levels of inbreeding and relatedness and that animals with overlapping home range are highly related. All five microsatellite loci displayed low levels of polymorphism and of expected and observed heterozygosity. The low level of polymorphism and high inbreeding showed by the population studied may be the outcome of high mortality and reduction in population size due to recurrent fire events in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Conservation; Microsatellites; Phylopatry; Relatedness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100020

Sociogenetic structure of Polistes (Aphanilopterus) versicolor Olivier, 1791 colonies (Hymenoptera, Vespidae, Polistini)
Provedor de dados: 74
Autores: Nagamati Junior,Keize; Simokomaki,Kimie; Gruber,Caroline Vivian; Del Lama,Marco Antonio.
The observation of two distinct, well-defined oviposition areas in nests of the primitively eusocial wasp Polistes versicolor suggests the presence of multiple egg-layers and territorial behaviors. Electrophoretic analysis of enzyme loci in pupae from 35 colonies revealed an average observed heterozygosity of 0.10 and the existence of private polymorphisms, thereby indicating a low dispersion in this species. No evidence of diploid males was found. Phenotypic segregation analysis revealed the presence of more than one egg-laying female in 15 out of 35 colonies, as well as spatially preferential oviposition in 2 out of 13 nests, with distinct oviposition areas. Genetic relatedness estimates for brood were lower than expected for haplodiploid species under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mating system; Relatedness; Multiple egg layers; Territorial behavior; Paper wasps.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400013

Genetic evidence supports polygamous mating system in a wild population of Prochilodus lineatus (Characiformes: Prochilodontidae), a Neotropical shoal spawner fish
Provedor de dados: 83
Autores: Ribolli,Josiane; Miño,Carolina Isabel; Scaranto,Bianca Maria Soares; Reynalte-Tataje,David Augusto; Zaniboni Filho,Evoy.
ABSTRACT Behavioral observations made on fish have revealed remarkably diverse reproductive strategies, including polygamy by both sexes. Still, to date, most Neotropical species remain unstudied as to whether the observed reproductive behavior in natural populations correlates with their genetic mating systems. Here, we investigated the genetic mating system of a wild population of Prochilodus lineatus settled in the Middle Uruguay River basin. By using sibship reconstruction and parental inference methods based on microsatellites’ genotypes, we inferred 45 females and 47 males as potential parents of the 87 larvae analyzed. We found evidence supporting polygamous mating in both sexes: while a high percentage of males (44.7%) fertilized the eggs of one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic mating system; Microsatellites; Migratory fish; Parentage; Relatedness.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200215