Freshwater fishes of Hidalgo state (Mexico) in the MZNA fish collection of the University of Navarra (Spain)
The state of Hidalgo (Mexico) is an important region from the point of view of biodiversity. However, there exists a significant gap in accessible knowledge about species diversity and distribution, especially regarding to freshwater ecosystems. This dataset comprises the sampling records of two projects developed in Hidalgo between 2007 and 2009 about the freshwater fish communities of Tecocomulco lake and rivers belonging to the Metztitlán Canyon Biosphere Reserve. It contains the taxonomic identity (species level) and basic biometric data (total length and weight) as well as date of collection and coordinates of more than 9000 specimens. This dataset is the primary result of the first and unrepeated exhaustive freshwater fish’s survey of Metztitlán Canyon Biosphere Reserve and Tecocomulco lake. It incorporates seven more species to the regional fish fauna, and new exclusive biometric data of ten species. This dataset can be used by studies dealing with, among other interests, North American freshwater fish diversity (species richness, distribution patterns) and biometric analyses, useful for the management and conservation of these areas. The complete dataset is also provided in Darwin Core Archive format.
The ‘Metztitlán Canyon’ (Barranca de Metztitlán) Biosphere Reserve, in the northern part of this state, has a high level of endemism in plants and animals because of its geomorphologic origin (Monks et al., 2005). This dataset is the primary result of the first and unrepeated exhaustive freshwater fish’s survey of this Biosphere Reserve, adding seven more species to the regional fish fauna, and new exclusive biometric data of nine species (Miranda et al., 2009; 2012). Among these species, there are five exotic species. Future Biosphere Reserve’s management plans should consider the presence of these alien species, with the aim to preserve conveniently the biodiversity (Pino-del-Carpio et al., 2011). Lake Tecocomulco is the only remaining natural water body in the basin of Gran Cuenca del Valle de México (Caballero et al., 1999). The occurrences of freshwater fishes present in this lake included in this dataset comprise the first and largest registered population of Chapultepec splitfin Girardinichthys viviparus, a threatened goodeid catalogued as critically endangered by the IUCN (Contreras-Balderas & Almada-Villela, 1996). This species show an extremely reduced range of distribution in the Mexican plateau, only known from a few locations near Distrito Federal (Mexico City), (Navarrete-Salgado et al., 2004; Sedeño-Díaz & López-López, 2009) until this dataset registration. Collection comprises 17 species (and two hybrids) of fishes belonging to eight families of the orders Atheriniformes, Ciprinodontiformes, Ostariophysi and Perciformes. Poeciliidae is the most abundant family, represented by seven species in the HidalgoFFishes dataset, being approximately 50% of the total specimens recorded. This database includes new records for the State of Hidalgo of the channel catfish Ictalurus punctatus, two cichlids (Herichthys pantostictus and Amatitlania nigrofasciata), two goodeids (Goodea atripinnis and Girardinichthys viviparus) and three poecilids (Pseudoxiphophorus jonesii, Poeciliopsis gracilis and Xiphophorus helleri). Besides, an undescribed catfish of Ictalurus genus has been included on this database (Miller et al. 2005). Among recorded species, there are one species Critically Endangered (Girardinichthys viviparus) and other vulnerable (Herichthys pantostictus) according to IUCN red list. Knowledge of species occurrences is the first step to manage and conserve the biodiversity and scarce information related to the distribution, abundance and management actions of threatened species hinder the development of adequate conservation strategies (Pino-del-Carpio et al., 2011). This is particularly relevant to conservation of species with restricted distribution ranges and seriously threatened, as the Chapultepec splitfin. The existence of this population could prove to be determinant for the conservation and survival of this species (Miranda et al. 2008).
Zoological Museum of the University of Navarra (MZNA, Pamplona, Spain) was established in the 1980 to curate the scientific research materials of the former Zoology and Ecology and now Environmental Biology department. Its climate-controlled storage facilities hold more than two million specimens, including several type series. The Museum is a Data Provider for the Global Biodiversity Information Facility (GBIF) and is an Affiliate to the International Comission of Zoological Nomenclature (ICZN). The Museum is also in charge of the curation and management of the Natural History Collections of the School of Science of the University of Navarra (Spain).
Date range: Feb 6, 2007 - Nov 21, 2008
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