Thermal Tolerance and Physiological Changes in Mud Crab, Scylla paramamosain Crablet at Different Water Temperatures
| Autor: | Faridah Mohamad, Muhammad Nur Syafaat, Mohammad Syahnon, Azmie Ghazali, Adnan Amin-Safwan, Mohamad N. Azra, Mhd Ikhwanuddin, Hongyu Ma, Che Zulkifli Che-Ismail, Mohammad Asmat-Ullah, Ambok Bolong Abol-Munafi |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Veterinary medicine
Scylla paramamosain crablet Molting cycle Acclimatization Article Animal science SF600-1100 nursery Critical thermal maximum megalopa mud crab General Veterinary biology Chemistry Significant difference Stage only biology.organism_classification environmental conditions aquaculture QL1-991 seed production Animal Science and Zoology Zoology |
| Zdroj: | Animals, Vol 11, Iss 1146, p 1146 (2021) Animals Volume 11 Issue 4 Animals : an Open Access Journal from MDPI |
| ISSN: | 2076-2615 |
| Popis: | This study was carried out to determine the physiological changes (survival, growth, molting cycle, sex differentiation, and gill condition) of mud crab, Scylla paramamosain crablet at different water temperatures of 24, 28 and 32 °C, and ambient temperature of 27 to 30 °C. Thermoregulatory behavior, represented by preferred temperature (29.83 ± SD 2.47 °C), critical thermal minimum (17.33 ± SD 0.58 °C), critical thermal maximum (40 ± SD 0.00 °C), and thermal tolerance interval (22.67 ± SD 0.58 °C), were checked for Crablet 1 stage only (with ambient temperature as acclimation temperature).Both low (24 °C) and high (32 °C) temperatures were associated with lower growth performance, and survival rate (p < 0.05), in comparison with both 28 °C and ambient temperature treatments.Male ratio at low temperaturetreatment (24 °C) was higher (80.09 ± SD 18.86%) than for other treatments (p < 0.05), observed as 44.81 ± D 10.50%, 41.94 ± SD 19.44%, and 76.30 ± SD 5.13% for 28 °C, 32 °C and ambient temperature treatments, respectively. However, there was no significant difference observed between 24 °C, 28 °C, and ambient temperature treatments. Anatomical alterations of gill lamellae of S. paramamosain crablet for both 32 °C, and 24 °C treatments, appeared thinner and paler than at both 28 °C, and ambient temperature treatments. Based on this study, temperature of 28 to 30 °C was recommended as the optimal temperature for the long-term nursery phase of S. paramamosain. |
| Databáze: | OpenAIRE |
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