東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Molecular natural history of fig wasps.

Machado, Carlos Alberto.

Linked to FindBook

Google Book

Amazon

博客來

Molecular natural history of fig wasps.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Molecular natural history of fig wasps./
Author:	Machado, Carlos Alberto.
Description:	187 p.
Notes:	Source: Dissertation Abstracts International, Volume: 59-08, Section: B, page: 3867.
Contained By:	Dissertation Abstracts International59-08B.
Subject:	Biology, Genetics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9903879
ISBN:	059901105X

Molecular natural history of fig wasps.
Machado, Carlos Alberto.

Molecular natural history of fig wasps. - 187 p.

Source: Dissertation Abstracts International, Volume: 59-08, Section: B, page: 3867.

Thesis (Ph.D.)--University of California, Irvine, 1998.

The first two chapters of this work use molecular phylogenies to describe the evolution of the most important groups of fig wasps (Agaonidae, Chalcidoidea). Phylogenetic analyses were performed using nucleotide sequences of mitochondrial genes (12S, COI, COII) collected from 78 species representing the major taxonomic and ecological groups of fig wasps. The phylogenies show that fig wasps are not monophyletic, providing evidence for independent colonization of figs by unrelated groups of chalcid wasps. It is shown that similar ecological strategies have evolved independently in different lineages of fig wasps, and that there are incongruencies between the phylogeny of the pollinating wasps and a morphology-based phylogeny of the figs.

ISBN: 059901105XSubjects--Topical Terms:

1017730
Biology, Genetics.

Molecular natural history of fig wasps.
LDR:03038nmm 2200301 4500 001 1861686
005 20041117065558.5
008 130614s1998 eng d
020 $a 059901105X
035 $a (UnM)AAI9903879
035 $a AAI9903879
040 $a UnM $c UnM
100 1 $a Machado, Carlos Alberto. $3 1949272
245 1 0 $a Molecular natural history of fig wasps.
300 $a 187 p.
500 $a Source: Dissertation Abstracts International, Volume: 59-08, Section: B, page: 3867.
500 $a Chair: Francisco J. Ayala.
502 $a Thesis (Ph.D.)--University of California, Irvine, 1998.
520 $a The first two chapters of this work use molecular phylogenies to describe the evolution of the most important groups of fig wasps (Agaonidae, Chalcidoidea). Phylogenetic analyses were performed using nucleotide sequences of mitochondrial genes (12S, COI, COII) collected from 78 species representing the major taxonomic and ecological groups of fig wasps. The phylogenies show that fig wasps are not monophyletic, providing evidence for independent colonization of figs by unrelated groups of chalcid wasps. It is shown that similar ecological strategies have evolved independently in different lineages of fig wasps, and that there are incongruencies between the phylogeny of the pollinating wasps and a morphology-based phylogeny of the figs.
520 $a Analyses of mitochondrial sequences from species of pollinating wasps (Pegoscapus, Tetrapus), non-pollinating wasps (Idarnes, Critogaster) and nematodes (Parasitodiplogaster) associated with 17 species of Panamanian figs, coupled with a detailed knowledge of their natural history and population biology, allowed to investigate the effect that similar generation times and different population sizes have on the accumulation of genetic differences among lineages (Chapter 3). Differences in silent substitution rate among organisms that have similar generation times were found. Some of the differences are due to phylogenetic effects because the organisms were not closely related (nematodes and wasps), but even closely related groups showed differences in silent rates (two different radiations of Idarnes non-pollinators). A correlation between small population size (census or effective) and increased rates of amino acid substitution was found in the non-pollinating fig wasps. However, a population genetic study (Chapter 4) showed that natural selection and not small population size was responsible for most of the amino acid substitutions in the Idarnes non-pollinator lineages. No positive correlation was found between population size and nucleotide diversity. A negative correlation was found between levels of inbreeding and nucleotide diversity in 6 species of pollinating wasps.
590 $a School code: 0030.
650 4 $a Biology, Genetics. $3 1017730
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Entomology. $3 1018619
690 $a 0369
690 $a 0329
690 $a 0353
710 2 0 $a University of California, Irvine. $3 705821
773 0 $t Dissertation Abstracts International $g 59-08B.
790 1 0 $a Ayala, Francisco J., $e advisor
790 $a 0030
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9903879