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The Dexter National Fish Hatchery & Technology Center is a U.S. Fish and Wildlife Service facility dedicated to fish culture techniques for threatened and endangered fishes of the American Southwest. Located in Dexter, New Mexico, it is the only federal facility in the nation dedicated to studying and holding only threatened and endangered fish. Scientists at the Dexter facility perform life history studies and carefully analyze fish genetics while maintaining a refuge for 16 imperiled fish species. Dexter National Fish Hatchery was established in 1931, to satisfy demands for game fish throughout the Southwest. New laws brought changes to the hatchery in the 1970s. == Fish species == On 1 January 2007, the Dexter National Fish Hatchery and Technology Center held 16 threatened and endangered species. :Colorado pikeminnow ''(Ptychocheilus lucius)'' :Razorback sucker ''(Xyrauchen texanus)'' :Bonytail chub ''(Gila elegans)'' :Virgin river chub ''(Gila robusta seminuda)'' :Chihuahua chub ''(Gila nigrescens)'' :Pahranagat roundtail chub ''(Gila robusta jordani)'' :Leon Springs pupfish ''(Cyprinodon bovinus)'' :Comanche Springs pupfish ''(Cyprinodon elegans)'' :Desert pupfish ''Cyprinodon macularius'' :Rio Grande Minnow ''(Hybognathus amarus)'' :Big bend gambusia ''(Gambusia gaigei)'' :Pecos gambusia ''(Gambusia nobilis)'' :Gila topminnow ''(Poeciliopsis occidentalis)'' :Beautiful shiner ''(Cyprinella formosa)'' :Woundfin ''(Plagopterus argentissimus)'' :Pecos bluntnose shiner ''(Notropis simus pecosensis)'' The station maintains a genetically diverse broodstock for each species. Fish are raised from these broodstocks with the intent of reintroducing them into their native habitat. Close monitoring at the hatchery include developing propagation and culture techniques, conducting water quality data, diet and nutrition testing, life history studies, reproductive physiology and genetic management. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dexter National Fish Hatchery & Technology Center」の詳細全文を読む スポンサード リンク
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