eCite Digital Repository
Phylogeography of the Indo-West Pacific maskrays (Dasyatidae, Neotrygon): a complex example of chondrichthyan radiation in the Cenozoic
Citation
Puckridge, M and Last, PR and White, WT and Andreakis, N, Phylogeography of the Indo-West Pacific maskrays (Dasyatidae, Neotrygon): a complex example of chondrichthyan radiation in the Cenozoic, Ecology and Evolution, 3, (2) pp. 217-232. ISSN 2045-7758 (2013) [Refereed Article]
![]() | PDF 1Mb |
Copyright Statement
Licenced under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/
DOI: doi:10.1002/ece3.448
Abstract
Maskrays of the genus Neotrygon (Dasyatidae) have dispersed widely in the
Indo-West Pacific being represented largely by an assemblage of narrow-ranging
coastal endemics. Phylogenetic reconstruction methods reproduced nearly identical
and statistically robust topologies supporting the monophyly of the genus
Neotrygon within the family Dasyatidae, the genus Taeniura being consistently
basal to Neotrygon, and Dasyatis being polyphyletic to the genera Taeniurops
and Pteroplatytrygon. The Neotrygon kuhlii complex, once considered to be an
assemblage of color variants of the same biological species, is the most derived
and widely dispersed subgroup of the genus. Mitochondrial (COI, 16S) and
nuclear (RAG1) phylogenies used in synergy with molecular dating identified
paleoclimatic fluctuations responsible for periods of vicariance and dispersal
promoting population fragmentation and speciation in Neotrygon. Signatures of
population differentiation exist in N. ningalooensis and N. annotata, yet a largescale
geological event, such as the collision between the Australian and Eurasian
Plates, coupled with subsequent sea-level falls, appears to have separated a once
homogeneous population of the ancestral form of N. kuhlii into southern
Indian Ocean and northern Pacific taxa some 416 million years ago. Repeated
climatic oscillations, and the subsequent establishment of land and shallow sea
connections within and between Australia and parts of the Indo-Malay Archipelago,
have both promoted speciation and established zones of secondary contact
within the Indian and Pacific Ocean basins.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | Biodiversity hotspot, cryptic species, marine speciation, maskray, Neotrygon, phylogeography. |
Research Division: | Biological Sciences |
Research Group: | Genetics |
Research Field: | Genetics not elsewhere classified |
Objective Division: | Environmental Management |
Objective Group: | Coastal and estuarine systems and management |
Objective Field: | Coastal or estuarine biodiversity |
UTAS Author: | Puckridge, M (Ms Melody Puckridge) |
ID Code: | 89577 |
Year Published: | 2013 |
Web of Science® Times Cited: | 41 |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2014-03-07 |
Last Modified: | 2014-05-13 |
Downloads: | 389 View Download Statistics |
Repository Staff Only: item control page