NDSU North Dakota State University
Fargo, N.D.

NDSU Institutional Repository

Body Shape Divergence Among Wild and Experimental Populations of White Sands Pupfish (Cyprinodon Tularosa)

Show full item record

Click to view higher resolution file
Brandon Kowalski.pdf
Title: Body Shape Divergence Among Wild and Experimental Populations of White Sands Pupfish (Cyprinodon Tularosa)
Author: Kowalski, Brandon Michael
Abstract: Reports of contemporary evolution have become ubiquitous, but replicated studies of phenotypic divergence for wild populations are exceptionally rare. In 2001, a series of experimental populations were established to replicate a historic translocation event that led to a case of contemporary body shape evolution in the White Sands pupfish. Using landmark-based geometric morphometric techniques I examined phenotypic variation for seven of these populations, and two wild populations over a 5 year period (5-10 generations) in the field. Significant body shape divergence was observed, but divergence patterns were not parallel, suggesting that the ponds were ecologically dissimilar. Considerable body shape variation found among populations suggests that the observed divergence maybe governed by temporal environmental variance. In this study, body shape variation was correlated with population density. These data suggest that habitat intrinsic factors or unmeasured habitat features may have strong affects on body shape, warranting continuous monitoring of recently translocated fishes.
Date: 2011
Subject: Cyprinodon -- New Mexico --Morphology.
Cyprinodon -- Ecology -- New Mexico.
Cyprinodon -- Effect of habitat modification on -- New Mexico.
Biological Sciences.
Environmental and Conservation Sciences.
Master of Science / Environmental and Conservation Sciences, College of Science and Mathematics, 2011.
Permalink: http://hdl.handle.net/10365/19527

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search


Your Account