Gambusia Explained

Gambusia is a large genus of viviparous fish in the family Poeciliidae (order Cyprinodontiformes). Gambusia contains over 40 species, most of which are principally found in freshwater habitats, though some species may also be found in brackish or saltwater habitats. The genus Gambusia comes from the Cuban term, "Gambusino", which means "free-lance miner".[1] The type species is the Cuban gambusia, G. punctata. The greatest species richness is in Mexico, Texas, and the Greater Antilles, but species are also found elsewhere in the eastern and southern United States, the Bahamas, Central America, and Colombia. Gambusia species are often called topminnows, or simply gambusias; they are also known as mosquitofish, which, however, refers more specifically to two species, G. affinis and G. holbrooki, which are often introduced into ponds to eat mosquito larvae.[2] [3] As a consequence, they have been introduced widely outside their native range, and frequently become invasive, threatening local species.[4] G. affinis and G. holbrooki are now established in many parts of the world and are likely to continue to spread as climatic conditions change.[5] They are only occasionally kept in aquariums, due to their relative lack of color and the highly aggressive nature of the aforementioned mosquitofish species.

Nine species are listed as vulnerable in the IUCN Red List; two, the widemouth gambusia, G. eurystoma, and the crescent gambusia, G. hurtadoi, are critically endangered; and two, the Amistad gambusia, G. amistadensis, and the San Marcos gambusia, G. georgei, are already extinct.

Species

The 45 currently recognized species in this genus are:

Notes and References

  1. Book: Wallus, Robert . Reproductive biology and early life history of fishes in the Ohio River drainage . 1990 . Tennessee Valley Authority, Aquatic Biology Dept., Water Resources . Bruce L. Yeager, Thomas P. Simon, Tennessee Valley Authority. Aquatic Biology Department, Tennessee Valley Authority. Office of Power, United States. Army. Corps of Engineers. Nashville District, American Electric Power Service Corporation . 0-8493-1919-6 . Chattanooga, Tenn. . 23153067.
  2. Web site: Gambusia: A Little Fish That Helps Solve Big Mosquito Problems . Alabama Vector Management Society . 24 December 2009 . 10 June 2011 . dead . https://web.archive.org/web/20080907213211/http://www.alabamavms.org/gambusia.htm . September 7, 2008 .
  3. Web site: Allen . Greg . Tropical Disease Buzzes Back Into U.S. . . . 10 June 2011 . 10 June 2011.
  4. Washington Department of Fish and Wildlife (2013). Gambusia affinis (Mosquito fish) . Retrieved 27 February 2013
  5. Jourdan. Jonas. Riesch. Rüdiger. Cunze. Sarah. Off to new shores: Climate niche expansion in invasive mosquitofish (Gambusia spp.). Ecology and Evolution. 11. 18369–18400. 10.1002/ece3.8427. 2021. 8717293.
  6. Gambusia quadruncus (Cyprinodontiformes: Poeciliidae): a new species of mosquitofish from east-central México. 10.1111/j.1095-8649.2012.03397.x. Langerhans, R. B., Gifford, M. E., Domínguez-Domínguez, O., García-Bedoya, D. & DeWitt, T.J. . 2012. Journal of Fish Biology. 81. 5. 1514–1539. 23020559.