Back

Title
  • en Different habitat salinity between genetically divergent groups of a worm-like goby Luciogobius guttatus: an indication of cryptic species
Creator
Accessrights open access
Rights
  • en Published online: 13 December 2013, ©Springer Science+Business Media Dordrecht 2013. "The final publication is available at link.springer.com"
Subject
  • Other en Biogeography
  • Other en Blakiston's line
  • Other en Convergence
  • Other en Distribution
  • Other en Phylogeography
  • Other en Mitochondrial DNA
  • NDC 487
Description
  • Abstract en Gobies of the genus Luciogobius have unusual morphological adaptations to interstitial rocky coastal habitats in far eastern Asia; an elongated scale-less body, the loss the first dorsal fin, and a drastically increased number of vertebrae. Convergent evolution makes the species distinction difficult and the existence of many cryptic species has been postulated. Two divergent lineages of L. guttatus had been reported with the possibility of niche differentiation between marine and brackish habitats. Here, we quantitatively assessed the water salinity of the habitats used by the two lineages in Hokkaido, Japan, as well as their morphology. One lineage occurred exclusively in high-salinity habitats in intertidal zones (> 25 aEuro degrees) and the other occurred mostly, but not exclusively, in low-salinity habitats near river mouths (< 5 aEuro degrees). This result, together with mtDNA molecular phylogeny, suggests that the brackish type might have originated from a marine ancestor. Two lineages occurred sympatrically on some shores. No apparent difference was observed in the external morphology between the lineages, whereas the number of vertebrae was significantly different. Our results support the preposition that the divergent lineages within L. guttatus represent cryptic species.
Publisher en Springer
Date
    Issued2014-10
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/57539
Relation
  • isVersionOf DOI https://doi.org/10.1007/s10641-013-0206-7
Journal
    • PISSN 0378-1909
    • NCID AA00637295
      • en Environmental Biology of Fishes
      • Volume Number97 Issue Number10 Page Start1169 Page End1177
File
Oaidate 2023-07-26