SEX REVERSAL IN SIAMESE FIGHTING FISH LARVAE BY THERMAL MANAGEMENT
| Autor: | Igor de Fiuza FRANÇA, Guilherme Melgaço HELUY, Érica Beatriz SCHULTZ, Wilson de Oliveira VIANNA, Marcelo Maia PEREIRA, Leonardo Rocha Vidal RAMOS |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Boletim do Instituto de Pesca, Vol 47, Pp 1-6 (2021) |
| ISSN: | 1678-2305 0046-9939 |
| Popis: | The present study evaluated the influence of thermal management during the larviculture of Betta splendens on survival and sex ratio, aiming to increase the proportion of males. Newly hatched larvae were subjected to different thermal regimes, namely, T25, T28, T30 and T33 (25, 28, 30 and 33ºC, respectively). The experiment was laid out in a completely randomized design, with 4 treatments and 10 repetitions. Thermal treatment was maintained until 15 days post-hatch (DPH). Mortality was determined at the end of the thermal regime and again at 45 DPH. At the end of the experiment, the number of males and females obtained in the different thermal treatments was counted to analyze the obtained sex ratio. There was a significant effect on mortality as a function of temperature only at 15 DPH (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|