Data/hora: 24/06/2024 01:26:58

Biblioteca(s): 	Embrapa Amazônia Oriental.	
Data corrente: 	13/05/2008	
Data da última atualização: 	23/11/2022	
Autoria: 	CLOUTIER, D.; KANASHIRO, M.; CIAMPI, A. Y.; SCHOEN, D. J.	
Afiliação: 	D. Cloutier, McGill University Canada; MILTON KANASHIRO, CPATU; Ana Yamaguishi Ciampi, Embrapa Recursos Genéticos e Biotecnologia; D. J. Schoen, McGill University Canada.	
Título: 	Impact of selective logging on inbreeding and gene dispersal in an Amazonian tree population of Carapa guianensis Aubl.	
Ano de publicação: 	2007	
Fonte/Imprenta: 	Molecular Ecology, v. 16, n. 4, p. 797-809, Feb. 2007.	
DOI: 	10.1111/j.1365-294X.2006.03193.x	
Idioma: 	Inglês	
Conteúdo: 	Selective logging may impact patterns of genetic diversity within populations of harvested forest tree species by increasing distances separating conspecific trees, and modifying physical and biotic features of the forest habitat. We measured levels of gene diversity, inbreeding, pollen dispersal and spatial genetic structure (SGS) of an Amazonian insect-pollinated Carapa guianensis population before and after commercial selective logging. Similar levels of gene diversity and allelic richness were found before and after logging in both the adult and the seed generations. Pre- and post-harvest outcrossing rates were high, and not significantly different from one another. We found no significant levels of biparental inbreeding either before or after logging. Low levels of pollen pool differentiation were found, and the pre- vs. post-harvest difference was not significant. Pollen dispersal distance estimates averaged between 75 m and 265 m before logging, and between 76 m and 268 m after logging, depending on the value of tree density and the dispersal model used. There were weak and similar levels of differentiation of allele frequencies in the adults and in the pollen pool, before and after logging occurred, as well as weak and similar pre- and post-harvest levels of SGS among adult trees. The large neighbourhood sizes estimated suggest high historical levels of gene flow. Overall our results indicate that there is no clear short-term genetic impact of selective logging on this population of C. guianensis.	
Palavras-Chave: 	Diversidade; Genetic diversity; Mating system; Microsatellite loci; Pollen dispersal; Selective logging; Spatial genetic structure.	
Thesagro: 	Polinização.	
Thesaurus Nal: 	Amazonia.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Amazônia Oriental (CPATU)	
Exemplares: 	CPATU - (39988-1) - UPC - AP - DD -  -  -  - DIS