Subfossil Chironomidae (Diptera) in surface sediments of the sinkholes (cenotes) of the Yucatan Peninsula: Diversity and distribution

Chironomids in cenotes of the Yucatan Peninsula

  • Ladislav Hamerlík | ladislav.hamerlik@gmail.com Polish Academy of Sciences, Institute of Geological Sciences, Poland.
  • Marta Wojewódka Polish Academy of Sciences, Institute of Geological Sciences, Poland.
  • Edyta Zawisza Polish Academy of Sciences, Institute of Geological Sciences, Poland.
  • Sergio Cohuo Duran Technische Universität Braunschweig, Institut für Geosysteme und Bioindikation, Germany.
  • Laura Macario-Gonzalez Technische Universität Braunschweig, Institut für Geosysteme und Bioindikation, Germany.
  • Liseth Pérez Universidad Nacional Autónoma de México (UNAM), Instituto de Geología, Mexico.
  • Krystyna Szeroczyńska Polish Academy of Sciences, Institute of Geological Sciences, Poland.

Abstract

Cenotes (sinkholes), formed by the dissolution of the carbonate rock, are the most common waterbodies on the Yucatan Peninsula. Despite their unique features and great amount in the region, our knowledge on the biota of cenotes remains fragmentary. Within the present study we analysed chironomid remains from surface sediment of ten cenotes situated in SE Mexico. In total, 20 taxa of 17 genera were recorded, and the total diversity was estimated to ~30 taxa. The most common taxa were Polypedilum (Tripodura) sp., Tanytarsus ortoni-type, Fittkauimyia sp., Labrundinia sp. and Endotribelos sp. There was a great variability in head capsule abundance among cenotes, ranging from 1 to 64 individuals per site with significantly higher number of remains recorded in open cenotes compared to the closed, cavern types. The results indicate that beside ecological features, such as low trophy, oxygen depletion, simplified habitat structure and fish predation, there are also taphonomical processes connected to the specific nature of cenotes that can hinder the accumulation of biological remains in the sediment. We conclude that due to poor sedimentation and preservation of remains, cenotes have limited potential for palaeolimnological studies.

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Published
2018-07-04
Supporting Agencies
National Science Centre (NCN), Poland, 2015/19/P/ST10/04048, NCN 2014/13/B/ST10/02534, the European Union’s Horizon 2020 under Marie Skłodowska-Curie grant No. 665778
Keywords:
Chironomids, head capsules, lakes, Mexico, Neotropical Region
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How to Cite
1.
Hamerlík L, Wojewódka M, Zawisza E, Cohuo Duran S, Macario-Gonzalez L, Pérez L, Szeroczyńska K. Subfossil Chironomidae (Diptera) in surface sediments of the sinkholes (cenotes) of the Yucatan Peninsula: Diversity and distribution. jlimnol [Internet]. 4Jul.2018 [cited 31Mar.2020];77(1s). Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2018.1769