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Growth, mortality and sex reversal in guppy and swordfish - Armando Adolfo Ortega Salas - Bog

Growth, mortality and sex reversal in guppy and swordfishaf Armando Adolfo Ortega Salas
Bag om Growth, mortality and sex reversal in guppy and swordfish

Growth, mortality and sexual reversion of guppy and swordfish were calculated over 120 days in 10 gallon aquaria, without aeration; densities of 1 fry per L, temperature ranged from 26° to 28 ºC ¿ 0.1. The average pH value was 8.1 and 8.4; O2 was 6.4 mg /l. They were fed 3 different diets with balanced feed with the addition of 3 different hormones: 1 Sten, 2 Primoteston and 3 Sostenon 250. The guppy fry fed with diet 1 showed growth of 0.48 g weight and length of 4.2 cm; with diet 2 were 0.44 g and 4.0 cm, and with diet 3 0.48 g and 4.2 cm. Swordfish with diet 1 presented values of 0.55 g weight, length of 5.4 cm; with diet 2, they were 0.59 g and 5 cm, and with diet 3 they were 0.55 g and 4.1 cm. Mortality for P. reticulata was 15% with diet 1, 7.5% with diet 2 and 20% with diet 3. For X. helleri it was 20% with diet 1, 12.5% with diet 2 and 25% with diet 3. Sexual reversion to males in guppies 88.2% with diet 1, 94.5% with diet 2 and 87.5% with diet 3. For swordfish 84.3% with diet 1, 91.4% with diet 2 and 93.3% with diet 3.

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  • Sprog:
  • Engelsk
  • ISBN:
  • 9786206877271
  • Indbinding:
  • Paperback
  • Sideantal:
  • 56
  • Udgivet:
  • 25. november 2023
  • Størrelse:
  • 150x4x220 mm.
  • Vægt:
  • 102 g.
  • 1-2 uger.
  • 4. februar 2025
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Beskrivelse af Growth, mortality and sex reversal in guppy and swordfish

Growth, mortality and sexual reversion of guppy and swordfish were calculated over 120 days in 10 gallon aquaria, without aeration; densities of 1 fry per L, temperature ranged from 26° to 28 ºC ¿ 0.1. The average pH value was 8.1 and 8.4; O2 was 6.4 mg /l. They were fed 3 different diets with balanced feed with the addition of 3 different hormones: 1 Sten, 2 Primoteston and 3 Sostenon 250. The guppy fry fed with diet 1 showed growth of 0.48 g weight and length of 4.2 cm; with diet 2 were 0.44 g and 4.0 cm, and with diet 3 0.48 g and 4.2 cm. Swordfish with diet 1 presented values of 0.55 g weight, length of 5.4 cm; with diet 2, they were 0.59 g and 5 cm, and with diet 3 they were 0.55 g and 4.1 cm. Mortality for P. reticulata was 15% with diet 1, 7.5% with diet 2 and 20% with diet 3. For X. helleri it was 20% with diet 1, 12.5% with diet 2 and 25% with diet 3. Sexual reversion to males in guppies 88.2% with diet 1, 94.5% with diet 2 and 87.5% with diet 3. For swordfish 84.3% with diet 1, 91.4% with diet 2 and 93.3% with diet 3.

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