Consulta: subjectFacets:"Ecological genetics"
Registros recuperados: 4
Data/hora: 09/06/2024 09:20:58

Transferability and characterization of microsatellite markers in two Neotropical Ficus species
Provedor de dados: 74
Autores: Nazareno,Alison Gonçalves; Pereira,Rodrigo Augusto Santinelo; Feres,Juliana Massimino; Mestriner,Moacyr Antônio; Alzate-Marin,Ana Lilia.
Microsatellite markers were transferred and characterized for two Neotropical fig tree species, Ficus citrifolia and Ficus eximia. Our study demonstrated that microsatellite markers developed from different subgenera of Ficus can be transferred to related species. In the present case, 12 of the 15 primer pairs tested (80%) were successfully transferred to both of the above species. Eleven loci were polymorphic when tested across 60 F. citrifolia and 60 F. eximia individuals. For F. citrifolia, there were 4 to 15 alleles per locus, whereas expected heterozygosities ranged from 0.31 to 0.91. In the case of F. eximia, this was 2 to 12 alleles per locus and expected heterozygosities from 0.42 to 0.87.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecological genetics; Ficus citrifolia; Ficus eximia; Moraceae; SSRs.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300021

Geographic isolation and larval dispersal shape seascape genetic patterns differently according to spatial scale
Provedor de dados: 5
Autores: Dalongeville, Alicia; Andrello, Marco; Mouillot, David; Lobreaux, Stephane; Fortin, Marie-josee; Lasram, Frida; Belmaker, Jonathan; Rocklin, Delphine; Manel, Stephanie.
Genetic variation, as a basis of evolutionary change, allows species to adapt and persist in different climates and environments. Yet, a comprehensive assessment of the drivers of genetic variation at different spatial scales is still missing in marine ecosystems. Here, we investigated the influence of environment, geographic isolation, and larval dispersal on the variation in allele frequencies, using an extensive spatial sampling (47 locations) of the striped red mullet (Mullus surmuletus) in the Mediterranean Sea. Univariate multiple regressions were used to test the influence of environment (salinity and temperature), geographic isolation, and larval dispersal on single nucleotide polymorphism (SNP) allele frequencies. We used Moran's eigenvector maps...
Tipo: Text
Palavras-chave: Connectivity; Ecological genetics; Marine fish; Mediterranean Sea; Mullus surmuletus; Seascape genetics; Single nucleotide polymorphism.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00454/56556/75079.pdf

Evaluating sediment and water sampling methods for the estimation of deep-sea biodiversity using environmental DNA
Provedor de dados: 5
Autores: Brandt, Miriam; Pradillon, Florence; Trouche, Blandine; Henry, Nicolas; Liautard-haag, Cathy; Cambon-bonavita, Marie-anne; Cueff-gauchard, Valerie; Wincker, Patrick; Belser, Caroline; Poulain, Julie; Arnaud-haond, Sophie; Zeppilli, Daniela.
Despite representing one of the largest biomes on earth, biodiversity of the deep seafloor is still poorly known. Environmental DNA metabarcoding offers prospects for fast inventories and surveys, yet requires standardized sampling approaches and careful choice of environmental substrate. Here, we aimed to optimize the genetic assessment of prokaryote (16S), protistan (18S V4), and metazoan (18S V1–V2, COI) communities, by evaluating sampling strategies for sediment and aboveground water, deployed simultaneously at one deep-sea site. For sediment, while size-class sorting through sieving had no significant effect on total detected alpha diversity and resolved similar taxonomic compositions at the phylum level for all markers studied, it effectively...
Tipo: Text
Palavras-chave: Biodiversity; Ecological genetics; Microbial ecology; Molecular ecology.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00689/80094/83149.pdf

Color polymorphism and allele frequency in a Brazilian population of the sunflower caterpillar Chlosyne lacinia saundersi (Doubleday) (Lepidoptera: Nymphalidae)
Provedor de dados: 82
Autores: Lopes-da-Silva,Marcelo; Casagrande,Mirna M.
The aim of this work was at calculating allele frequency color polymorphism in a population of sunflower caterpillar, Chlosyne lacinia saundersi (Doubleday) from Londrina, Paraná State, Brazil. Allele frequency in insect populations can be used as genetic marker to compare populations from different geographical and host origins. There are three phenotypes conditioned by two loci interacting epistatically. The phenotypes are: rufa (oranged colored larvae), bicolor (black larvae with dorsal orange stripes) and nigra, larvae with the body entirely black, sometimes with dorsal yellow dots, best seen in the fourth and fifth instars. Samples were taken independently in an attempt to obtain all combinations of crossing among genotypes. The genetic mechanism of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epistasis; Population genetics; Ecological genetics; Phenotype.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100025