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Panbiogeographical analysis of the shark genus Rhizoprionodon (Chondrichthyes, Carcharhiniformes, Carcharhinidae)
Gallo, V.; Cavalcanti, M.J.; da Silva, R.F.L.; da Silva, H.M.A.; Pagnoncelli, D. (2010). Panbiogeographical analysis of the shark genus Rhizoprionodon (Chondrichthyes, Carcharhiniformes, Carcharhinidae). J. Fish Biol. 76(7): 1696-1713. dx.doi.org/10.1111/j.1095-8649.2010.02609.x
In: Journal of Fish Biology. Fisheries Society of the British Isles: London,New York,. ISSN 0022-1112; e-ISSN 1095-8649, meer
|  |
| Trefwoorden |
Rhizoprionodon Whitley, 1929 [WoRMS]
Marien/Kust; Brak water |
| Author keywords |
historical biogeography; marine biogeography; panbiogeography;Rhizoprionodon sharpnose shark; track analysis |
| Auteurs | | Top |
- Gallo, V.
- Cavalcanti, M.J.
- da Silva, R.F.L.
|
- da Silva, H.M.A.
- Pagnoncelli, D.
|
|
| Abstract |
The distributional patterns of the seven species of Rhizoprionodon were analysed using the panbiogeographical method of track analysis. The individual tracks of Rhizoprionodon suggest that the genus is mainly an Indian–Atlantic Ocean group. Five generalized tracks were found: (1) Caribbean, defined by R. porosus and R. terraenovae; (2) eastern coast of South America, defined by R. porosus and R. lalandei; (3) Indian Ocean, defined by R. acutus and R. oligolinx; (4) north-western Australia, defined by R. acutus, R. oligolinx and R. taylori; (5) north-north-eastern Australia, defined by R. acutus and R. taylori. Only R. longurio was not included in any generalized track, and its distribution is restricted to the eastern Pacific Ocean. Two biogeographical nodes were found at the intersection of the generalized tracks 1 and 2 (Caribbean Sea) and generalized tracks 4 and 5 (north Australia). The generalized tracks overlap with those found in several unrelated marine taxa. Overall, the generalized tracks are associated with warm currents. The biogeographical nodes found (Caribbean and Australian) are coincident with the global distribution of mangroves. |
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