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Título del libro: Lake Alchichica Limnology: The Uniqueness Of A Tropical Maar Lake
Título del capítulo: Alchichica Silverside

Autores UNAM:
FRANCISCO XAVIER CHIAPPA CARRARA; ELSAH ARCE URIBE; GERARDO PEREZ PONCE DE LEON; JAVIER ALCOCER DURAND;
Autores externos:

Idioma:

Año de publicación:
2022
Palabras clave:

Charal; Conservation status; Extinction risk; Fishery; Microendemic silverside; Population ecology


Resumen:

The Alchichica silverside, Poblana alchichica, is at risk of extinction since its range is restricted (microendemic) to Lake Alchichica. Fish mean density in the basin is 0.0021 ± 0.0015 org/m2, and organisms are distributed in two zones of the lake, the pelagic and the littoral zone, but most (>95%) of the fish inhabit the perimeter of the lake close to the tufa ring. Few individuals (<5%) were recorded in the pelagic zone at depths from the surface to 55 m deep, but often not deeper than 40 m. This pattern seems to relate with the illumination conditions that allow efficient foraging on species characteristic of the benthic habitat that predominates over planktonic prey. The Alchichica silverside is an iteroparous fish, and a spawning peak occurs in early spring. Eight helminth species parasite this silverside, including two trematodes, two cestodes, three nematodes, and one hirudinean. Anthropic pressures on Lake Alchichica?s health, the enduring habitat loss, and its consequences on its unique biodiversity are highlighted. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.


Entidades citadas de la UNAM: