La cherehuita Hubbsina turneri De Buen (1941) (Pisces: Goodeidae). Origen, distribución y su uso en la regionalización de la cuenca del Lerma

Abstract

The purpose of this paper is to nlyse the underlying causes of the origin and distributio of Hubbsina turneri (cherehuita) fro the standpoint of its biogeogrphic history. First, the relationship between this specie with the other 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 Later Miocene. Peros of time where the disruption of drainages establishes the formation of lacustrine depressions of Mes Central. Second, there is the eposition of different hypothesis about the temporal-space distribution of this fish. Prticularly, the origin and evolution of lake Zacapu nad lake Cuitzeo is also discussed, the catual sites of distribution of the species, concluding that the first established at Middle-Late Pliocene, mean while Cuiteo origin occupied the Late Miocene, period of time that seems to coincide with the development of Hubbsin turneri. Both bodies of water probably were join t Pliocene-Pleistocene, and then they separate at Pleistocene-Holocene epoch. These geological and mophoestructural context, allow to explain the distribution of this godeid and why it do not envolved 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 Lerme ichthiological subprovince. Also, it put clear the restriction f the species because of there is no actual records of Hubbsin turneri, in the Rio Grande de Morelia (interior) basin and the Lake of Cuitzeo, places of its original description.