語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
到查詢結果
[ subject:"Biology, Systematic." ]
切換:
標籤
|
MARC模式
|
ISBD
Evolution of Mating Systems in Sphag...
~
Johnson, Matthew G.
FindBook
Google Book
Amazon
博客來
Evolution of Mating Systems in Sphagnum Peatmosses.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Evolution of Mating Systems in Sphagnum Peatmosses./
作者:
Johnson, Matthew G.
面頁冊數:
113 p.
附註:
Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.
Contained By:
Dissertation Abstracts International74-08B(E).
標題:
Biology, Genetics. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3558955
ISBN:
9781303037719
Evolution of Mating Systems in Sphagnum Peatmosses.
Johnson, Matthew G.
Evolution of Mating Systems in Sphagnum Peatmosses.
- 113 p.
Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.
Thesis (Ph.D.)--Duke University, 2013.
Bryophytes, by their haploid dominant life cycle, possess several unique qualities ideal for study of mating patterns. In particular, the possibility of intragametophytic selfing in some species, and the vegetative propagation of gametes allow for a unique window into the haploid stage that is intractable in other groups. Despite these advantages, there have been relatively few studies on mating patterns bryophytes in natural populations. Sphagnum (peatmoss) is an excellent case study in the interactions between sexual condition, ecology, and mating patterns. In the first Chapter, we use microsatellites to characterize the genetic diversity and mating patterns in fourteen species of Sphagnum, diverse in sexual condition (separate vs combined sexes in the haploid stage) and ecology (microhabitat variance along the water table). We find that genetic diversity and mating patterns are related only in species with separate sexes, that sexual condition and ecology have interacting effects on inbreeding coefficients, and that inbreeding depression is not a common phenomenon in Sphagnum. In the second Chapter, we conduct an intensive survey of one population of Sphagnum macrophyllum to detect whether variance in haploid fecundity and mating success is related to diploid fitness. We find a relationship between mating success and fecundity (a signal of sexual selection), and fitness of the diploid generation is connected to the parentage of the haploid generation. Finally, in Chapter 3 we use phylogenetic comparative methods to track the phylogenetic signal in microhabitat preference in Sphagnum. We find extremely fast rates of evolution along the micronutrient gradient, but high phylogenetic signal along a hydrological gradient. Given that Sphagnum species living high above the water table have reduced water availability, phylogenetic signal in the hydrological gradient has macroevolutionary implications for mating systems in Sphagnum..
ISBN: 9781303037719Subjects--Topical Terms:
1017730
Biology, Genetics.
Evolution of Mating Systems in Sphagnum Peatmosses.
LDR
:02803nam a2200277 4500
001
1965014
005
20141010092953.5
008
150210s2013 ||||||||||||||||| ||eng d
020
$a
9781303037719
035
$a
(MiAaPQ)AAI3558955
035
$a
AAI3558955
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Johnson, Matthew G.
$3
2101589
245
1 0
$a
Evolution of Mating Systems in Sphagnum Peatmosses.
300
$a
113 p.
500
$a
Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.
500
$a
Adviser: Arthur J. Shaw.
502
$a
Thesis (Ph.D.)--Duke University, 2013.
520
$a
Bryophytes, by their haploid dominant life cycle, possess several unique qualities ideal for study of mating patterns. In particular, the possibility of intragametophytic selfing in some species, and the vegetative propagation of gametes allow for a unique window into the haploid stage that is intractable in other groups. Despite these advantages, there have been relatively few studies on mating patterns bryophytes in natural populations. Sphagnum (peatmoss) is an excellent case study in the interactions between sexual condition, ecology, and mating patterns. In the first Chapter, we use microsatellites to characterize the genetic diversity and mating patterns in fourteen species of Sphagnum, diverse in sexual condition (separate vs combined sexes in the haploid stage) and ecology (microhabitat variance along the water table). We find that genetic diversity and mating patterns are related only in species with separate sexes, that sexual condition and ecology have interacting effects on inbreeding coefficients, and that inbreeding depression is not a common phenomenon in Sphagnum. In the second Chapter, we conduct an intensive survey of one population of Sphagnum macrophyllum to detect whether variance in haploid fecundity and mating success is related to diploid fitness. We find a relationship between mating success and fecundity (a signal of sexual selection), and fitness of the diploid generation is connected to the parentage of the haploid generation. Finally, in Chapter 3 we use phylogenetic comparative methods to track the phylogenetic signal in microhabitat preference in Sphagnum. We find extremely fast rates of evolution along the micronutrient gradient, but high phylogenetic signal along a hydrological gradient. Given that Sphagnum species living high above the water table have reduced water availability, phylogenetic signal in the hydrological gradient has macroevolutionary implications for mating systems in Sphagnum..
590
$a
School code: 0066.
650
4
$a
Biology, Genetics.
$3
1017730
650
4
$a
Biology, Systematic.
$3
1676856
690
$a
0369
690
$a
0423
710
2
$a
Duke University.
$b
Biology.
$3
1018710
773
0
$t
Dissertation Abstracts International
$g
74-08B(E).
790
$a
0066
791
$a
Ph.D.
792
$a
2013
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3558955
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9260013
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入