Journal
ECOLOGY AND EVOLUTION
Volume 2, Issue 7, Pages 1725-1737Publisher
WILEY-BLACKWELL
DOI: 10.1002/ece3.286
Keywords
Longitudinal gradient; ocean current; phylogeography; planktic foraminifer
Categories
Funding
- EraNet BiodivERsA project BioMarks-Biodiversity of Marine euKaryotes
- ANR project PO-SEIDON [ANR-09-BLAN-0348-01]
- ANR project Paleo-CTD [JCJC06_136763]
- French Agence Nationale de la Recherche
- Japan Society for the Promotion of Science [20405007, 23710012]
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0348] Funding Source: Agence Nationale de la Recherche (ANR)
- Grants-in-Aid for Scientific Research [20405007, 10J07648, 23710012] Funding Source: KAKEN
Ask authors/readers for more resources
Evolutionary processes in marine plankton have been assumed to be dependent on the oceanic circulation system, which transports plankton between populations in marine surface waters. Gene flow facilitated by oceanic currents along longitudinal gradients may efficiently impede genetic differentiation of pelagic populations in the absence of confounding marine environmental effects. However, how responsible oceanic currents are for the geographic distribution and dispersal of plankton is poorly understood. We examined the phylogeography of the planktic foraminifer Pulleniatina obliquiloculata in the Indo-PacificWarm Pool (IPWP) by using partial small subunit ribosomal DNA(SSU rDNA) sequences. We found longitudinal clines in the frequencies of three distinct genetic types in the IPWP area. These frequencies were correlated with environmental factors that are characteristic of three water masses in the IPWP. Noteworthy, populations inhabiting longitudinally distant water masses at the Pacific and Indian sides of the IPWP were genetically different, despite transportation of individuals via oceanic currents. These results demonstrate that populations of pelagic plankton have diverged genetically among different water masses within a single climate zone. Changes of the oceanic circulation system could have impacted the geographic patterns of dispersal and divergence of pelagic plankton.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available