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Genetic Connectivity of Pelagic Fishes (Katsuwonus pelamis and Scomberomorus commerson) across the Indo-West Pacific Alexis Jackson 1, Paul Barber 2 1.

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Presentation on theme: "Genetic Connectivity of Pelagic Fishes (Katsuwonus pelamis and Scomberomorus commerson) across the Indo-West Pacific Alexis Jackson 1, Paul Barber 2 1."— Presentation transcript:

1 Genetic Connectivity of Pelagic Fishes (Katsuwonus pelamis and Scomberomorus commerson) across the Indo-West Pacific Alexis Jackson 1, Paul Barber 2 1. Yale University 2. Boston University, MBL

2 Species of Study Katsuwonus pelamis Scomberomorus commerson Katsuwonus pelamis

3 °° Katsuwonus pelamis Scomberomorus commerson

4

5 Biogeography of Indo-West Pacific

6 Regional genetic differentiation of Linckia laevigata

7 Collection Sites

8 Objectives 1. Investigate population structure of pelagic fishes in IWP 2. Investigate population dynamics of pelagic fish

9 Hypotheses 1. Fishes not affected by Pleistocene 2. Limited flow to Indian and Pacific 3. K. pelamis different from Scomberomorus

10 Methods Sample Size: 241 –Scomberomorus commerson (76) –Katsuwonus pelamis (165) Extraction Method: Chelex PCR ABI 377 Statistical Analysis: PAUP, Arlequin

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12 K. pelamis

13 Population Pairwise FSTs Katsuwonus pelamis

14 Population Pairwise FSTs Katsuwonus pelamis

15 AMOVA Analysis Katsuwonus pelamis

16

17 S. commerson

18 Population Pairwise FSTs Scomberomorus commerson

19 AMOVA Analysis Scomberomorus commerson

20 Molecular Diversity Indices K. pelamis

21 Molecular Diversity Indices S. commerson

22 Conclusions Panmixia not a phenomenon for S. commerson in IWP Boundaries for pelagic fish Commercial significance

23 Acknowledgements Many thanks to the following: Paul BarberPaul Barber Elizabeth JonesElizabeth Jones Josh DrewJosh Drew Eric CrandallEric Crandall Timery DeBoerTimery DeBoer Matthew SubiaMatthew Subia Krystle ChavarriaKrystle Chavarria Jeannie ChoiJeannie Choi National Science Foundation and The Diversity ProjectNational Science Foundation and The Diversity Project

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