Characodon geddesi Regan, Cyprinus viviparus Bustamante, Girardinichthys innominatus Bleeker, Limnurgus variegatus Günther, PDF | A population of the Chapultepec splitfin Girardinichthys viviparus was found in the urban Lake Alameda Oriente. Biometry data for. This study evaluates the estrogenic effects of these compounds on the black-fin goodeid Girardinichthys viviparus, an endangered fish species in Mexico with a.

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Girardinichthys viviparus

If you throw these little fishes into water, they will swim as well as if they had been long accustomed to live in that element. InMiranda et al. Despite poor environmental conditions, the Xochimilco and Zumpango populations have managed to survive up to the present.

Species categorized as Data Deficient DD. Further examinations in this 3 habitats showed a different abundance and threat of the species. Conservation status and population trends of Mexican Goodeids Lyons, Species categorized as Vulnerable VU.

Copyright by Susanne Schleussner. A taxon is Extinct In The Wild EW when it is known only to survive in cultivation, in captivity or as a naturalized population or populations well outside the past range.

Eastern Gorilla Critically Endangered, A4bcd ver 3. We need to more than double the number of wild species plants, animals and fungi assessed. Register for an account To save searches and access a historical view of information you have downloaded you are required to register for an account. Sometimes, females show a gravity spot.

Copyright by Frank Kroenke. Females are silvery-gray with the upper half of the body darker, the venter brighter. The terra typica has been given with Mexico City.

The paired fins are clear. Bustamante as Cyprinus viviparusso this species name had to be accepted finally. This is only achievable with support from people like you. Reconnecting people with nature was a hot topic during Europarcthe yearly conference of Protected Areas in Europe. Skip to main content. The cleft is nearly vertical, so this species might be specialized in feeding from a special kind of small invertebrates Copepods?

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It divides species into nine categories: It prefers clear to murky water and depths between 0. Guenther had chosen the scientific name Limnurgus variegatus to “purge the barbarous” name Girardinichthys innominatusgiven by Bleeker six years before. A taxon is Near Threatened NT when it has been evaluated against the criteria but does not qualify for Critically EndangeredEndangered or Vulnerable now, but is close to qualifying for or is likely to qualify for a threatened category in the near future.

To save searches and access a historical view of information you have downloaded you are required to register for an account.

A taxon is Critically Endangered CR when the best available evidence indicates that it meets any of the criteria A to E for Critically Endangered, and it is therefore considered to be facing an extremely high risk of extinction in the wild. Meek noted a not-coiled intestinal canal, about the length of the body and small, pointed teeth, all indicates of a carnivorous nutrition.

A taxon is Endangered EN when the best available evidence indicates that it meets any of the criteria A to E for Endangered, and it is therefore considered to be facing a very high risk of extinction in the wild. Javascript is required to view this map. Girardinichthys viviparus has been the first cyprinodontiform fish, where livebearing has been observed, probably as early as A taxon is Extinct EX when there is no reasonable doubt that the last individual has died.

Please enter your e-mail address and password below. Our new goal isspecies by It was the first species of Cyprinodonts, where livebearing has been observed.

Girardinichthys viviparus |

The Mexcalpique inhabited originally the endorheic basin of the Lago de Texcoco. The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global girardknichthys.

The abbreviation for an ESU is composed of the first 3 letters of the genus, followed by the first 2 letters of the species name and an ongoing number in each species. The drainage of the Valley coupled with the rapid expansion of Mexico City led to a drastic decline in the distribution and abundance of G.

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This is of course not legimitated. Gill – who translated a letter in from Don Joseph Anthony de Alzate y Ramirez, who observed the transit of the Venus in – this Don Alzate forwarded some preserved viviparous scaly fishes in to the Royal Academy of Sciences in Paris. The maximum known SL is 65mm Miller et al, Another possibility may have been the introduction by man. Species categorized as Least Concern LC.

girqrdinichthys Meanwhile, a study from Salgado et al revealed that in 2 of 5 known habitats, including the Laguna de Zumpango and the Requena Reservoir, this species has disappeared again and has survived only in the three lagos de Chapultepec in Mexico City.

It might have been overlooked there, though this lake has been studied well.

Chapultepec splitfin

Vegetation is abundant, mainly green algae, Potamogetonwater hyacinths, Lemna and Chara. However, our work is nowhere near complete. However, the species had been already described in by S.

This population persists in moderate numbers despite poor water quality, but it is vulnerable to drainage of the lake for maintenance. The fins are clear to somehow dusky-grayish. Surveys should be over a time frame appropriate to the taxon’s life cycle and life form. Image 5 and 6: We need to more than double the number of wild species plants, animals and fungi assessed Our new goal isspecies by Most parts of this Lake disappeared during the last decades, and with this parts disappeared also Girardinichthys viviparus.