Freshwater fish's spatial patterns in isolated water springs in North-eastern Mexico

Palacio Núñez, Jorge; Verdú, José R.; Numa, Catherine; Jiménez García, Daniel; Olmos Oropeza, Genaro; Galante, Eduardo

dc.creator	Palacio Núñez, Jorge
dc.creator	Verdú, José R.
dc.creator	Numa, Catherine
dc.creator	Jiménez García, Daniel
dc.creator	Olmos Oropeza, Genaro
dc.creator	Galante, Eduardo
dc.date	2009-04-03
dc.date.accessioned	2016-05-03T15:36:12Z
dc.date.available	2016-05-03T15:36:12Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/5219
dc.identifier	10.15517/rbt.v58i1.5219
dc.identifier.uri	https://hdl.handle.net/10669/27642
dc.description	The Media Luna lake-spring was selected as representative of all thermal or no thermal springs in the zone of Valley of Rioverde, a semi-arid vegetation in the North-eastern of Mexico. This system is inhabited by 11 fish species, of which six are native. Four of the native species are endemic to the region and threatened due to touristic pressure and to the introduction of exotic species. The objectives were to determine the characteristics that influence the spatial distribution of the fish species, to analyze their spatial distribution patterns, and to describe the relationships between the different species. The general aim was to establish some basis for the conservation of these fish communities and their habitat. Several sessions were initiated in 1992 through direct observation. Later, between 1998 and 1999 five systematically seasonal sampling sessions were conducted (54 subaquatic transects/session). Finally, the data was updated by sampling in summer 2002 and winter 2006. Through the analysis was performed only for endemics of the region, like Ataeniobius toweri Meek, Cualac tessellatus Miller, Cichlasoma bartoni Bean and C. labridens Pellegrin, in at least one life stage, showed correlation with habitat variables or with other species. For these species, patterns of spatial aggregation and association with other species were observed. These results show a certain degree of specialization of endemic species to some microhabitat characteristics, as well as a significant interaction with other native species which they coexist. In addition, some significant relations between endemic and alien species suggest an antagonist relation. Management actions focused in the touristic use of the spring represent the main threat for these species, followed by an adequate management of exotic species. This study provides basis for future responsible management of these wetlands, where tourism and conservation can be combined.	en
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (1) March 2010	es-ES
dc.source	0034-7744
dc.source	10.15517/rbt.v58i1
dc.title	Freshwater fish's spatial patterns in isolated water springs in North-eastern Mexico	en
dc.type	artículo original
dc.coverage	CRC	en

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