Molecular and morphological divergence in a stygobiont gastropod lineage (Truncatelloidea, Moitessieriidae, Paladilhiopsis) within an isolated karstic area in the Mecsek Mountains (Hungary)

Dorottya Angyal, Gergely Balázs, Virág Krízsik, Gábor Herczeg, Zoltán Fehér

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Truncatelloid gastropods are one of the most species-rich subterranean invertebrate groups. Their current taxonomy is based on morphological characters. However, this is not a comprehensive approach and does not take into account the degree of phylogenetic divergence between stygobiont populations inhabiting hydrologically isolated but geographically close caves. We studied two Paladilhiopsis populations of a small and isolated karstic area (Mecsek Mountains, Hungary) with two hydrologically separated cave systems, investigating morphological (shell morphometrics) and genetic (COI, 16S) divergence together. The populations differed both morphologically and genetically: we found strong divergence in the relative width of the shell (best described by the variable “shell angle”) and a 6.4% divergence in COI. This provides strong support for the presence of two distinct taxa; however, it is still doubtful whether they differ at the species or the subspecies level. In one of the caves, we found representatives of both haplotypes (and phenotypes), which can be explained by secondary contact after an allopatric divergence.

Original languageEnglish
Pages (from-to)493-504
Number of pages12
JournalJournal of Zoological Systematics and Evolutionary Research
Volume56
Issue number4
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Moitessieriidae
  • locality-haplotype mismatch
  • phylogeny
  • shell morphometry
  • subterranean

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology
  • Molecular Biology
  • Genetics

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