Download - Nicolas Hubert - Opening Plentary
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Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding
provides new support to the centre-of-overlap hypothesis
Nicolas Huberta, Meyer Cb, Bruggemann Hc, Guérin Fc, Komeno RJLd, Espiau Be, Causse Rf, Williams Jb, Planes Se
a IRD, UMR5554 ISE-M, France; b Smithsonian Institution, NMNH, Washington DC, c Université de la Réunion, Département de Biologie, Réunion; d Université de Toliara, IHSM, Madagascar; e CNRS, CRIOBE USR 3278, France; f Muséum National d’Histoire Naturelle, UMR 7208 BOREA, France.
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Diversity of Indo-Pacific coral reef fishes
10490 species, 394 familles (Fishbase, 2011)
33% of world’s ichthyofauna
≈ 5000 reef associated
Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
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Spatial diversity of Indo-Pacific coral reefs
Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
4200 sp. (1% surface, 40% ichthyofauna)
944 sp. (698 reef associated) 703 sp. (598 reef associated)
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Gradient of diversity and IPR biodiversity centre
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of origin
Biodiversity hypotheses for coral reefs
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of origin
Biodiversity hypotheses for coral reefs
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of origin
Biodiversity hypotheses for coral reefs
(1) Endemism is young in IPR (2) Range midpoint fall in IPR
(3) Shallow population structure (high connectivity & dispersal)
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of overlap
Biodiversity hypotheses for coral reefs
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of overlap
Biodiversity hypotheses for coral reefs
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Centre of overlap
Biodiversity hypotheses for coral reefs
(1) Endemism follows history (2) Range midpoint out of IPR
(3) Deep population structure (barrier to dispersal)
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Hypothesis testing through large-scale Barcoding
Widespread species with Indopacific distribution ranges = Cryptic diversity ?
(2) Range midpoint = what if n spp. ?
(3) Population structure = dispersal ?
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Collaborative framework for large-scale initiatives
SWIO BIOTAS project
Central Pacific Moorea biocode project
Coral reef fishes 2276 ind., 667 sp., 70 fam.
Inner reef Outer slope
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Inter-oceanic genetic divergence
Intraspecific 513 taxa, 2122 ind., 4794 comp.
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Patterns in widespread species
Pattern 1 62/142
Pattern 2 68/142
Pattern 3 6/142
Pattern 4 6/142
80/142 widespread species include 167 lineages (Patterns 2, 3, 4)
142 species = 229 lineages
Shallow Monophyly Paraphyly (geography, taxonomy)
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Cryptic diversity and genetic divergence
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Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis
Cryptic diversity and species range midpoint
Widespread species with Indopacific distribution ranges = n spp.
(2) Range midpoint = out of the IPR but species range tails?
(3) Population structure = “fragmented” across the Indopacific
?
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Thank you
Hubert et al. Cryptic diversity in Indo-Pacific coral reef fishes revealed by DNA barcoding provides new support to the centre-of-overlap hypothesis