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Nematode fauna associated with freshwater microbialites in Bacalar Lake, Quintana Roo, Mexico

De Jesús Navarrete, Alberto [autor] | Yanez Montalvo, Alfredo Francisco [autor] | Falcón Álvarez, Luisa Isaura [autora] | Vargas Espositos, Abel Abraham [autor].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Nemátodos acuáticos | Taxonomía animal | Microbialitas | Características fisicoquímicas del agua | Variables ambientalesTema(s) en inglés: Aquatic nematodes | Animal taxonomy | Microbialite | Physicochemical characteristics of water | Environmental variablesDescriptor(es) geográficos: Laguna Bacalar, Othón P. Blanco (Quintana Roo, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Limnology. Volumen 22 (2021), páginas 347–355. --ISSN: 1439-863XNúmero de sistema: 61418Resumen:
Inglés

Bacalar Lake is characterized by a high saturation of calcium, bicarbonate, sulfate and silicate in its water and these conditions harbor a microbialite community. To explore the nematode fauna, associated with microbialites, 11 sites along the lake were selected. The collected microbialites were carefully dissolved and nematodes extracted manually. Nematodes were represented by 2 classes, 10 orders, 17 families, and 22 genera. Dorylaimidae and Xyalidae were the richest in genera (3 each), while the family Selachinematidae was represented by Choanolaimus, which is frst reported in epicontinental systems. Dichromadora (48), Epitobrilus (31), Dorylaimus (30), Ischiodorylaimus (24), Belondira (13), Aphanolaimus (11) and Monhystera (10) were the most abundant genera. All Nematode’s freshwater feeding types were present, but deposit feeders (DF) were observed with 35%. We concluded that nematodes are an important component of the metazoan fauna in microbialites from Bacalar Lake, with a higher diversity than reported in other lakes and marine environments. Nematodes can take advantage of the micro-spaced texture of microbialites and function as bioturbators, as well as escape predation, taking advantage of available food, which is refected in the structure of nematode feeding types. More research on the inter action of microbialites-nematodes is necessary to understand their role in this poorly known environment.

Recurso en línea: https://doi.org/10.1007/s10201-021-00662-2
Lista(s) en las que aparece este ítem: Agua
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Disponible para usuarios de ECOSUR con su clave de acceso

Bacalar Lake is characterized by a high saturation of calcium, bicarbonate, sulfate and silicate in its water and these conditions harbor a microbialite community. To explore the nematode fauna, associated with microbialites, 11 sites along the lake were selected. The collected microbialites were carefully dissolved and nematodes extracted manually. Nematodes were represented by 2 classes, 10 orders, 17 families, and 22 genera. Dorylaimidae and Xyalidae were the richest in genera (3 each), while the family Selachinematidae was represented by Choanolaimus, which is frst reported in epicontinental systems. Dichromadora (48), Epitobrilus (31), Dorylaimus (30), Ischiodorylaimus (24), Belondira (13), Aphanolaimus (11) and Monhystera (10) were the most abundant genera. All Nematode’s freshwater feeding types were present, but deposit feeders (DF) were observed with 35%. We concluded that nematodes are an important component of the metazoan fauna in microbialites from Bacalar Lake, with a higher diversity than reported in other lakes and marine environments. Nematodes can take advantage of the micro-spaced texture of microbialites and function as bioturbators, as well as escape predation, taking advantage of available food, which is refected in the structure of nematode feeding types. More research on the inter action of microbialites-nematodes is necessary to understand their role in this poorly known environment. eng

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