التفاصيل البيبلوغرافية
| العنوان: |
Weak genetic structure indicates strong dispersal limits: a tale of two coral reef fish. |
| المؤلفون: |
John F.H. Purcell, Robert K. Cowen, Colin R. Hughes, Dean A. Williams |
| المصدر: |
Proceedings of the Royal Society B: Biological Sciences; Jun2006, Vol. 273 Issue 1593, p1483-1490, 8p |
| مصطلحات موضوعية: |
GENETICS, LARVAE, MARINE parks & reserves, MARINE fishes |
| مستخلص: |
The extent of dispersal by pelagic larvae in marine environments, including coral reefs, is central for understanding local population dynamics and designing sustainable marine reserves. We present here the first example of a clear stepping-stone genetic structure throughout the Caribbean basin for a common coral reef species, the French grunt (Haemulon flavolineatum). Analysis of microsatellite DNA markers indicated that French grunt population structure may be characterized by overlapping populations throughout the Caribbean, influenced by independent population dynamics but with no fixed geographical boundaries. In addition, different spatial genetic patterns were found in different oceanographic regions. A second species, the bluehead wrasse (Thalassoma bifasciatum), has a much longer pelagic larval duration than French grunts and showed no explicit spatial pattern of genetic variation. This finding is concordant with the hypothesis of a positive relationship between larval dispersal and duration in the plankton. While the magnitude of the genetic signal of population structure in French grunts was very low (FST0.003), the pattern of isolation-by-distance throughout the Caribbean indicated considerable population structure with important ecological and conservation significance. [ABSTRACT FROM AUTHOR] |
|
Copyright of Proceedings of the Royal Society B: Biological Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder