Conspecific versus heterospecific gene exchange between populations of Darwin's finches (Registro nro. 5052)

Detalles MARC
000 -LEADER
fixed length control field	02463nab a22002297u 4500
003 - CONTROL NUMBER IDENTIFIER
control field	EC-PaCDF
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20180221083442.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	100804s2010 xxk\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|eng\|d
040 ## - CATALOGING SOURCE
Original cataloging agency	EC-PaCDF
Language of cataloging	eng
Transcribing agency	EC-PaCDF
041 ## - LANGUAGE CODE
Language code of text/sound track or separate title	eng
082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number	598.883
Edition number	23
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name	Grant, Peter R.
245 10 - TITLE STATEMENT
Title	Conspecific versus heterospecific gene exchange between populations of Darwin's finches
246 #1 - VARYING FORM OF TITLE
Title proper/short title	Intercambio de genes conespecífico versus heteroespecífico entre poblaciones de los pinzones de Darwin
520 3# - SUMMARY, ETC.
Summary, etc.	This study addresses the extent and consequences of gene exchange between populations of Darwin's finches. Four species of ground finches (Geospiza) inhabit the small island of Daphne Major in the centre of the Galápagos archipelago. We undertook a study of microsatellite DNA variation at 16 loci in order to quantify gene flow within species owing to immigration and between species owing to hybridization. A combination of pedigrees of observed breeders and assignments of individuals to populations by the program Structure enabled us to determine the frequency of gene exchange and the island of origin of immigrants in some cases. The relatively large populations of Geospiza fortis and G. scandens receive conspecific immigrants at a rate of less than one per generation. They exchange genes more frequently by rare but repeated hybridization. Effects of heterospecific gene flow from hybridization are not counteracted by lower fitness of the offspring. As a result, the standing genetic variation of the two main resident populations on Daphne Major is enhanced to a greater extent by introgressive hybridization than through breeding with conspecific immigrants. Immigrant G. fuliginosa also breeds with G. fortis. Conspecific immigration was highest in the fourth species, G. magnirostris. This species is much larger than the other three and perhaps for this reason it has not bred with any of them. The source island of most immigrants is probably the neighbouring island of Santa Cruz. Evolutionary change may be inhibited in G. magnirostris by continuing gene flow, but enhanced in G. fortis and G. scandens by introgressive hybridization.
546 ## - LANGUAGE NOTE
Language note	English
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term	Geospiza
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Grant, B. Rosemary
9 (RLIN)	265
Relator term	author
773 ## - HOST ITEM ENTRY
Main entry heading	Philosophical Transactions of the Royal Society B
Place, publisher, and date of publication	2010
Related parts	vol. 365, no. 1543, p. 1065-1076
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	http://dx.doi.org/10.1098/rstb.2009.0283
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme	Dewey Decimal Classification
Koha item type	Artículo

Existencias
Withdrawn status	Source of classification or shelving scheme	Damaged status	Not for loan	Collection code	Home library	Current library	Shelving location	Date acquired	Total Checkouts	Full call number	Barcode	Date last seen	Koha item type
	Dewey Decimal Classification			Galápagos	Corley Smith Library	Corley Smith Library	Artículos	04/08/2010		598.883 GRA 2010	2010-073	01/02/2011	Artículo
	Dewey Decimal Classification			Galápagos	Corley Smith Library	Corley Smith Library	Colección PDF	15/03/2012		598.883 GRA 2010	2021-2004	15/03/2012	Documento electrónico