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Effect of High Stocking Rates on Growth and Survival of the Endangered Rio Grande Silvery Minnow Hybognathus amarus

  • Hutson, Alison M. (Los Lunas Silvery Minnow Refugium, New Mexico Interstate Stream Commission) ;
  • Toya, Louie A. (Los Lunas Silvery Minnow Refugium, New Mexico Interstate Stream Commission) ;
  • Tave, Douglas (Los Lunas Silvery Minnow Refugium, New Mexico Interstate Stream Commission)
  • 투고 : 2013.08.23
  • 심사 : 2013.11.06
  • 발행 : 2013.12.30

초록

The endangered Rio Grande silvery minnow Hybognathus amarus was cultured in 2.44-m-diameter outdoor tanks in a 131-day yield trial to assess growth, survival, and percentage of taggable-sized fish (${\geq}35mm$ total length) when stocked at 500/tank (1.07 million/ha), 1,000/tank (2.14 million/ha), and 1,500/tank (3.21 million/ha). At harvest, fish averaged 45.6 mm and 0.94 g in the 500/tank treatment, 42.6 mm and 0.74 g in the 1,000/tank treatment, and 38.4 mm and 0.55 g in the 1,500/tank treatment; the differences were significant (P = 0.05). Survival in the three treatments was 70%, 64%, and 52%, respectively, but the differences were not significant. Percent taggable-sized fish was 86%, 89%, and 65%, respectively, but the differences were not significant. Yield was 672.5 kg/ha, 1,026.6 kg/ha, and 887.8 kg/ha, respectively; yield in the 1,000/tank treatment was significantly greater than that in the 500/tank treatment, but was not significantly greater than that of the 1,500/tank treatment. This facility is a conservation facility and a major goal is to raise fish without formulated feed. Fertilization produced good growth for the first month, but little growth occurred during the second month so supplemental feed had to be used for the final 60 d of the yield trial.

키워드

참고문헌

  1. Boyd CE. 1990. Water Quality in Ponds for Aquaculture. Alabama Agricultural Experiment Station, Auburn University, AL, US.
  2. Caldwell CA, Barrows FT, Ulibarri M and Gould WR. 2010. Diet optimization of juvenile Rio Grande silvery minnow. N Am J Aquac 72, 57-64. http://dx.doi.org/10.1577/A09-011.1.
  3. Hutson AM, Toya LA and Tave D. 2012. Production of the endangered Rio Grande silvery minnow, Hybognathus amarus, in the conservation rearing facility at the Los Lunas Silvery Minnow Refugium. J World Aquac Soc 43, 84-90. http://dx.doi.org/10.1111/j.1749-7345.2011.00537.x
  4. Tave D and Hutson AM. 2011. 2011 Annual Report: USFWS TE Permit 169770-4. Los Lunas Silvery Minnow Refugium, Los Lunas, NM, US.
  5. Tave D, Haggerty G, Medley CN, Hutson AM and Ferjancic KP. 2011. Los Lunas silvery minnow refugium: a conservation hatchery. World Aquac 42(2), 28-34, 67.
  6. Tave D, Valenzuela L, Toya L and Hutson AM. 2012. New design for airlift pump used in fish culture tanks with the endangered Rio Grande silvery minnow (Hybognathus amarus). Croat J Fish 70, 83-91.
  7. U.S. Fish and Wildlife Service. 2010. Revised Rio Grande silvery minnow (Hybognathus amarus) recovery plan. U.S. Fish and Wildlife Service, Albuquerque, NM, US.

피인용 문헌

  1. Lower lethal temperature of the endangered Rio Grande silvery minnow and its implications for propagation and reintroduction vol.29, pp.2, 2017, https://doi.org/10.1080/10454438.2016.1274934
  2. Comparison of Body Composition and Fatty Acid Profiles between Wild and Cultured Rio Grande Silvery Minnows vol.8, pp.2, 2017, https://doi.org/10.3996/072016-JFWM-055