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Lack of population genetic structure in the marine nematodes Ptycholaimellus pandispiculatus and Terschellingia longicaudata in beaches of the Persian Gulf, Iran
Sahraean, N.; Van Campenhout, J.; Rigaux, A.; Mosallanejad, H.; Leliaert, F.; Moens, T. (2017). Lack of population genetic structure in the marine nematodes Ptycholaimellus pandispiculatus and Terschellingia longicaudata in beaches of the Persian Gulf, Iran. Mar. Ecol. (Berl.) 38(3): 10. https://hdl.handle.net/10.1111/maec.12426
In: Marine Ecology (Berlin). Blackwell: Berlin. ISSN 0173-9565; e-ISSN 1439-0485, more
Peer reviewed article  

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Keywords
Author keywords
    cosmopolitanism; cryptic species; dispersal; gene flow; marinenematodes; population genetics

Authors  Top 
  • Sahraean, N., more
  • Van Campenhout, J., more
  • Rigaux, A., more
  • Mosallanejad, H.
  • Leliaert, F., more
  • Moens, T., more

Abstract
    We investigated genetic diversity and population genetic structure of two common benthic nematode species, Ptycholaimellus pandispiculatus and Terschellingia longicaudata, from sandy beaches in the area of Bandar Abbas (Iran), Persian Gulf. Based upon partial mitochondrial cytochrome oxidase c subunit 1 (COI) gene data, 17 and two haplotypes were found for P. pandispiculatus and Te. longicaudata, respectively. Analysis of molecular variance did not reveal a significant population genetic structure for either species. The absence of genetic structuring indicates substantial dispersal and gene flow in our study area. To assess the species structure of Te. longicaudata at a larger geographic scale, we compared 18S rDNA and COI sequences from Iran and the Scheldt Estuary in The Netherlands to ascertain whether they truly belong to the same species. Our data confirmed previous studies that Te. longicaudata likely constitutes a complex of multiple cryptic species, with one of these species having a (near) cosmopolitan distribution.

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