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首页> 外文期刊>North American Journal of Fisheries Management >Discovery of Grass Carp Larvae in the Colorado River Arm of Lake Powell
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Discovery of Grass Carp Larvae in the Colorado River Arm of Lake Powell

机译：在鲍威尔湖科罗拉多河手臂中发现草鲤鱼幼虫

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摘要

Grass Carp Ctenopharyngodon idella stocking in the upper Colorado River basin is statutorily limited to triploid, i.e., functionally sterile, individuals. Systematic fish sampling in the upper Colorado River basin indicates adult Grass Carp remain rare but have been increasing in abundance since 2007. Grass Carp larvae collected in the Colorado River arm of Lake Powell, about 26 km downstream from the inflow, in 2015 and 2016, are evidence of the presence of a spawning population. These larvae were the first documentation of Grass Carp spawning in a river basin of the western United States. While Grass Carp reproductive biology suggests spawning occurred in the Colorado River or its tributaries upstream from Lake Powell, the sample location, age, and number of larvae collected pose the possibility of reservoir spawning. Addition of another, reproductively viable, nonnative, fish species to the already heavily invaded upper Colorado River basin could further impact conservation of the federally endangered native fishes.
机译：Grass Carp Ctenopharyncodon Idella Stocking在上层科罗拉多河流域是统治者限于Triploid，即功能无菌，个体。上层科罗拉多河流域的系统鱼类表明成年草鲤鱼仍然罕见，但自2007年以来一直在增加。鲍威尔湖科罗拉多河的草鲤鱼幼虫，2015年和2016年下游约26公里，是存在产卵人口的证据。这些幼虫是美国西部河流盆地草鲤鱼的第一个文献。虽然草鲤生殖生物学表明产卵发生在科罗拉多河或其支流从鲍威尔湖上游，所在的样本地点，年龄和幼虫的数量造成了水库产卵的可能性。添加了另一种，生殖的可行性，非侵入的上层科罗拉多河盆地的鱼类可以进一步影响联邦濒危本地鱼的保护。

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    Brandenburg W. Howard; Francis Travis A.; Snyder Darrel E.; Bestgen Kevin R.; Hines Brian A.; Wilson Wade D.; Bohn Sandra; Harrison Alexis S.; Barkalow Stephani L. Clark;

  • 作者单位

    Amer Southwest Ichthyol Researchers LLC 800 Encino Pl Northeast Albuquerque NM 87102 USA;

    US Fish &

    Wildlife Serv Grand Junction Fish &

    Wildlife Conservat Off 445 West Gunnison Ave Suite 140 Grand Junction CO 81501 USA;

    Colorado State Univ Dept Fish Wildlife &

    Conservat Biol Larval Fish Lab Ft Collins CO 80523 USA;

    Colorado State Univ Dept Fish Wildlife &

    Conservat Biol Larval Fish Lab Ft Collins CO 80523 USA;

    Moab Field Stn Utah Div Wildlife Resources 1165 South Highway 191 Suite 4 Moab UT 84532 USA;

    US Fish &

    Wildlife Serv Southwestern Native Aquat Resources &

    Recovery Ct POB 219 Dexter NM 88230 USA;

    US Fish &

    Wildlife Serv Southwestern Native Aquat Resources &

    Recovery Ct POB 219 Dexter NM 88230 USA;

    US Fish &

    Wildlife Serv Southwestern Native Aquat Resources &

    Recovery Ct POB 219 Dexter NM 88230 USA;

    Amer Southwest Ichthyol Researchers LLC 800 Encino Pl Northeast Albuquerque NM 87102 USA;

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  • 正文语种 eng
  • 中图分类 畜牧、动物医学、狩猎、蚕、蜂;
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