Journal Article
Linking radiocarbon and trophic webs in karstic groundwater ecosystems in the Yucatan Peninsula, México
Solís, C., Chávez-Solís, E.M., Rodríguez-Ceja, M., Méndez-García, C.G., Ortíz, E., Canto, C., Martínez-Carrillo, M.A., Mascar, M.
Record Number:
6064
Year:
2023
Journal:
Radiocarbon
Pages:
1629-1639
Volume:
64
Notes:
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is cited
Abstract:
ABSTRACT. Stable isotopes have been used historically to track food webs. Our approach used a combination of δ13C
and radiocarbon (14C) dating to identify carbon sources in cave shrimp within caves of the Karstic Yucatan Peninsula,
Mexico. Three sister species of stygobitic Typhlatya shrimps were collected from the cenote pool (cenote hereafter), cavern
and cave hydro regions. New and previously reported 14C and δ13C values of whole tissues from the organisms were
determined at the AMS laboratory (LEMA) of the Institute of Physics of the Universidad Nacional Aut ´onoma de
México. This new set of isotopic values of biomass and potential sources were incorporated into the Bayesian Mixing
Modeling Software SIAR. In two hypothetical scenarios, the contribution from each feeding source among three
species of the Typhlatya genus was determined. Slight differences were also observed between isotopic values of two
groups of the same species collected in two distant cenote pools, suggesting this species may feed on a wider array of
sources than previously found, and that the oligotrophic environment may have a strong influence on cave shrimp diet.
KEYWORDS: anchialine, radiocarbon AMS, Typhlatya, Yucatan Peninsula.
Times Cited:
3