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GIRARDINICHTHYS VIVIPARUS PDF

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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Copyright by Susanne Schleussner. A taxon is Vulnerable VU when the best available evidence indicates that it meets any of the criteria A to E for Vulnerable, and it is therefore considered to be facing a high risk of extinction in the wild.

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.

Giradinichthys need to more than double the number of wild species plants, animals and fungi assessed. Conservation status and population trends of Mexican Goodeids Lyons, It was the first species of Cyprinodonts, where livebearing has been observed. The maximum known SL is 65mm Miller et al, Girardinichthys viviparus has been the first cyprinodontiform fish, where livebearing has been observed, probably as early as The fins are clear to somehow dusky-grayish.

Image 5 and 6: Skip to main content. Further examinations in this 3 habitats showed a different abundance and threat of the species.

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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. 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.

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.

Chapultepec splitfin – Wikipedia

The Mexcalpique inhabited originally the endorheic basin of the Lago de Texcoco. The drainage of the Valley coupled with the rapid expansion of Mexico City led to a drastic decline girardinichthhs the distribution and abundance of G. A taxon is Extinct EX when there is no reasonable doubt that the last individual has died. Most parts of this Lake girsrdinichthys during the last decades, and with this parts disappeared also Girardinichthys viviparus. Species categorized as Endangered EN.

Guenther had chosen the scientific name Limnurgus variegatus to “purge the barbarous” name Girardinichthys innominatusgiven by Bleeker six years before. Species categorized as Data Deficient DD. The IUCN Red List Categories and Criteria are intended to be an easily and vibiparus understood system for classifying species at high risk of global extinction.

Males are silvery gray, marbled sligthly blackish-gray. A bluish glimmer can be seen with some specimens. Please enter your e-mail address and password below. Species categorized as Girardinnichthys Concern LC.

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Girardinichthys viviparus

Meek noted a not-coiled intestinal canal, about the length of the body and small, pointed teeth, all indicates of a carnivorous nutrition. Create new account Request new password. However, our work is nowhere near complete. Eastern Gorilla Critically Endangered, A4bcd ver 3.

Reconnecting people with nature was a hot topic during Europarcthe yearly conference of Protected Areas in Europe. Females are silvery-gray with the upper half of the body darker, the venter brighter. Bustamante as Cyprinus viviparusso this species name had to be accepted finally. During courtship the males become totally blackish to black. Species categorized as Near Threatened NT. Far more than a list of species and their status, it is a powerful tool to inform and catalyze action for biodiversity conservation and policy change, critical to protecting the natural resources we need to survive.

The terra typica has been given with Mexico City. This is only achievable with support from people like you. This is of course not legimitated. Species categorized as Vulnerable VU. Despite poor environmental conditions, the Xochimilco and Zumpango populations have managed to survive up to the present.

It divides species into nine categories: InMiranda et al. Another possibility may have been the introduction by man. This population persists in moderate numbers despite poor water quality, but it is vulnerable to drainage of the lake for maintenance.