Primeros registros de moluscos dulceacuícolas de la Reserva Ecológica El Edén, Quintana Roo, México.

Abstract

The diversity of the freshwater molluscs at El Edén was unknown. This is the fi rst treatment of them, allowing us to compare spatial and temporal species distribution. Eleven species of freshwater molluscs were found in 2 surveys carried in March (dry season) and September (rainy season) 1998 at the reserve El Edén. A total of 266 individuals were collected; 8 pulmonates, Mayabina spiculata, Mexinauta impluviatus, Physa sp., Biomphalaria havanensis, Drepanotrema lucidum, Drepanotrema kermatoides, Planorbella (Pierosoma) trivolvis, and Planorbula armigera; 2 prosobranchs, Pyrgophorus sp. and Pomacea fl agellata; and one bivalve, Musculium transversum. Pulmonata dominate over Prosobranchia species in diversity. No signifi cant differences were observed in diversity between dry and rainy seasons. However, species abundance recorded in both seasons was very low, probably due to a combination of inadequate food resources and disadvantageous climate (periodic conditions of drought and fl ooding). Further studies using a combination of different sampling methods and more frequent samplings are needed to confi rm or identify these factors. We suggest that future studies should focus on cultivation of species with economic potential such as the apple snail Pomacea fl agellata.

The freshwater snails (Mollusca: Gastropoda) of Mexico: updated checklist, endemicity hotspots, threats and conservation status

“…Species occurrences in states were determined using primary literature, including published local checklists and available local Conabio (National Commission for the Knowledge and Use of Biodiversity) reports and our own records (Avendaño-Gil et al, 2010;Campos et al, 2013;Conabio, 2016;Contreras-Arquieta, 2000[Littoridinops monroensis (Frauenfeld, 1863, L. tenuipes (Couper, 1844), Ferrissia californica (Rowell, 1863), Gyraulus circumstriatus (Tryon, 1866), Micromenetus https://doi.org/10. 22201/ib.20078706e.2020.91.2909 brogniartianus (Lea, 1842)]; Cózatl-Manzano & Naranjo-García, 2007;Estrada-Loreto, 2011;Hershler et al, 1999[Tryonia imitator (Pilsbry, 1899]; Lam-Gordillo et al, 2012;López-López et al, 2009;Baqueiro et al, 2006;Naranjo-García, 2003;Ortega-Chávez et al, 2007 [Lymnaea stagnalis (Linnaeus, 1758)]; Naranjo- García & Meza Meneses, 2000[Ecrobia truncata (Vanatta, 1924, Gundlachia radiata (Guilding, 1828)]; Pérez-Rodríguez & Vicente-Velázquez, 2003;Ramos-Solís, 2018;Rangel-Ruiz, 2000[Drepanotrema depressissimum (Moricand, 1839, D. surinamense (Clessin, 1884)]; Rangel-Ruiz & Gamboa- Aguilar, 2005;Reguero & García-Cubas, 1989;Rosenberg et al, 2009;Serrano-Pinto & Caraveo-Patiño, 2002). Table 1 Checklist of Mexican freshwater gastropods (see abbreviations and definitions in Materials and methods).…”