| High connectivity among locally adapted populations of a marine fish (Menidia menidia). | |
| | |
MedLine Citation:
|
PMID: 21302825 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
Patterns of connectivity are important in understanding the geographic scale of local adaptation in marine populations. While natural selection can lead to local adaptation, high connectivity can diminish the potential for such adaptation to occur. Connectivity, defined as the exchange of individuals among subpopulations, is presumed to be significant in most marine species due to life histories that include widely dispersive stages. However, evidence of local adaptation in marine species, such the Atlantic silverside, Menidia menidia, raises questions concerning the degree of connectivity. We examined geochemical signatures in the otoliths, or ear bones, of adult Atlantic silversides collected in 11 locations along the northeastern coast of the United States from New Jersey to Maine in 2004 and eight locations in 2005 using laser ablation inductively coupled plasma mass spectrometry (ICP-MS) and isotope ratio monitoring mass spectrometry (irm-MS). These signatures were then compared to baseline signatures of juvenile fish of known origin to determine natal origin of these adult fish. We then estimated migration distances and the degree of mixing from these data. In both years, fish generally had the highest probability of originating from the same location in which they were captured (0.01-0.80), but evidence of mixing throughout the sample area was present. Furthermore, adult M. menidia exhibit highly dispersive behavior with some fish migrating over 700 km. The probability of adult fish returning to natal areas differed between years, with the probability being, on average, 0.2 higher in the second year. These findings demonstrate that marine species with largely open populations are capable of local adaptation despite apparently high gene flow. |
| | |
Authors:
|
Lora M Clarke; Stephan B Munch; Simon R Thorrold; David O Conover |
Related Documents
:
|
20852775 - Semiconductor-mediated photodegradation of pollutants under visible-light irradiation. 19575465 - Acute toxicity of two cdse/znse quantum dots with different surface coating in daphnia ... 19158885 - Bidirectional photoresponse of surface pretreated azobenzene liquid crystal polymer net... 16303425 - Ultraviolet transmittance of the vistakon disposable contact lenses. 20936995 - Effects of reverberation on acceptable noise level measurements in younger and older ad... 7839605 - Object perception by visually impaired people at different light levels. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: Ecology Volume: 91 ISSN: 0012-9658 ISO Abbreviation: Ecology Publication Date: 2010 Dec |
Date Detail:
|
Created Date: 2011-02-09 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0043541 Medline TA: Ecology Country: United States |
Other Details:
|
Languages: eng Pagination: 3526-37 Citation Subset: IM |
Affiliation:
|
School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York 11794-5000, USA. Lora.Clarke@noaa.gov |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Food availability at birth limited reproductive success in historical humans.
Next Document: Indirect effects of a key ecosystem engineer alter survival and growth of foundation coral species.