The purpose of this study was to examine and compare the genetic connectivity
between two pelagic (open-ocean) species of tuna, Rastrelliger kanagurta and Katsuwonus
pelamis, in the Indonesia Archipelago (IA).
Assuming a positive correlation between dispersal and genetic connectivity, we
predicted that K. pelamis and R. kanagurta will have similar levels of genetic structure.
The quintessence of pelagic taxa is the ability to disperse; therefore divergence should
rarely arise in a pelagic species. However, recent studies have indicated that species diversity
is considerably more common in pelagic species than previously inferred.
To help sustain marine populations, conservation efforts have been focused on
understanding connectivity and establishing interconnected reserve networks.
Marine reserves are one proven strategy to improve the biomass and abundance of reef
organisms (Russ and Alcala, 1996). Because dispersal is the primary means of demographic
and genetic exchange among marine populations (i.e. connectivity), understanding patterns
of dispersal and connectivity has been identified as one of the key components in developing
sustainable marine reserves (Sale et. al., 2005).
Direct observation of marine dispersal is difficult. However, population genetics have
become particularly helpful in understanding connectivity and dispersal among marine
organisms (Grosberg and Cunningham, 2003). By understanding how species disperse and
where genetic barriers have developed and reduced connectivity, reserves can be adjusted
and scaled for optimal revenue, while still ensuring stability in a population (Palumbi, 2001).||en
|dc.description.sponsorship||Kalamazoo College. Department of Biology. Diebold Symposium, 2008.||
|dc.publisher||Kalamazoo, Mich. : Kalamazoo College.||
|dc.relation.ispartof||Kalamazoo College Diebold Symposium Presentations Collection||
|dc.rights||U.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.||
|dc.title||Comparative Phylogeography of Two Scrobridae in Indonesia Archipelago: Understanding the Dispersal Dynamics of a Pelagic Species||en