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![Landscape Genomics of the Threatened Vernal Pool Fairy Shrimp (Branchinecta lynchi) için kapak resmi Landscape Genomics of the Threatened Vernal Pool Fairy Shrimp (Branchinecta lynchi) için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Landscape Genomics of the Threatened Vernal Pool Fairy Shrimp (Branchinecta lynchi)
Başlık:
Landscape Genomics of the Threatened Vernal Pool Fairy Shrimp (Branchinecta lynchi)
Yazar:
Garza, Samuel Kenneth, author.
ISBN:
9780438069671
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (52 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Andres Aguilar Committee members: Patrick Krug; Robert Nissen; Elizabeth Torres.
Özet:
The role of genetic diversity in the survival of a species cannot be overstated. In the face of environmental changes, the adaptability of a species determines their survival and persistence. High genetic diversity enables natural selection to act upon phenotypes which are fit for environmental changes. Gene flow can be an important source of genetic variation, as the connection between subpopulations may result in the passing of novel and desirable traits from one population to another. Limited gene flow between freshwater invertebrates is assumed to be a result of limited dispersal capability. As a result, subpopulations of freshwater invertebrates are highly differentiated from one another despite small geographical distances between them. This study explores the genetic differentiation of Branchinecta lynchi, the threatened vernal pool crustacean, evaluating geographical and environmental patterns to determine factors which are important for maintaining population structure. Sampled vernal pools were located near the University of California Merced campus. 125 samples were sequenced using double digest restriction-site associated digestion sequencing (ddRADSeq). Principal component analysis of loci established that differentiation between populations was high and a geographic pattern of isolation by distance emerged. Furthermore, vernal pool size affected genetic diversity within subpopulations, suggesting that larger undisrupted pools are important for maintaining diversity and genetic homogenization of pools. From these results, I infer that maximizing vernal pool size and connectivity between subpopulations should be a management priority.
Notlar:
School code: 0962
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(692294.1) | 692294-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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