Abstract

MONCAYO ESTRADA, Rodrigo; ISRADE ALCANTARA, Isabel  and  GARDUNO MONROY, Víctor Hugo. La cherehuita Hubbsina turneri De Buen (1941) (Pisces: Goodeidae): Origen, distribución y su uso en la regionalización de la cuenca del Lerma. Hidrobiológica [online]. 2001, vol.11, n.1, pp.01-18. ISSN 0188-8897.

The purpose of this paper is to analyse the underlying causes of the origin and distribution of Hubbsina turneri (cherehuita) from the standpoint of its biogeographic history. First, the relationship between this specie with the order members of the subfamily is discussed based on bibliographic references of the Goodeinae, and is confirmed that Hubbsina is closely related to Girardinichthys, having their origin from the most recent common ancestor probably in Late Miocene. Period of time where the disruption of drainages establishes the formation of lacustrine depressions of Mesa Central. Second, there is the exposition of different hypothesis about the temporal-space distribution of this fish. Particularly, the origin and evolution of lake Zacapu and lake Cuitzeo is also discussed, the actual sites of distribution of the species, concluding that the first established at Middle-Late Pliocene, mean while Cuitzeo origin occupied the Late Miocene, period of time that seems to coincide with the development of Hubbsina turneri. Both bodies of water probably were joint at Pliocene-Pleistocene, and then they separate at Pleistocene-Holocene epoch. These geological and mophoestructural context, allow to explain the distribution of this goodeid and why it do not evolved in two different species. Another conclusion, is the suggestion of a division of the Lerma basin, according with the distribution of Hubbsina turneri incorporating Lake Zacapu and Rio Angulo as part of the Middle Lermae ichthiological subprovence. Also, It put in clear the restriction of the species because of there is no actual records of Hubbsina turneri, in the Rio Grande de Morelia (interior) basin and the Lake of Cuitzeo, places of its original description.

Keywords : Hubbsina turneri; goodeid; origin; distribution; biogeographic history; geology; Zacapu; Cuitzeo; Lerma basin division.

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