Effect of High Temperature on Survival, Growth and Feed Conversion Ratio of Nile Tilapia, &lt;i&gt;Oreochromis niloticus&lt;/i&gt;

Pandit, Narayan; Nakamura, Masaru

doi:10.3126/on.v8i1.4331

Cited by 62 publications

(34 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…At higher elevations in the rainy season water turnover occurs earlier probably because relatively cooler rain lowers surface water temperature and associated wind together increases circulation. Counter-intuitively in the rainy season there is a greater risk of low levels of dissolved oxygen, higher temperature and more TAN as well as 2 …”

Section: Resultsmentioning

confidence: 99%

“…Warmer pond temperatures due to climate change may be a contributing factor to this problem. Temperature and dissolved oxygen (DO) have impacts on fish production [2,3] and may be affected by weather and climate [4,5]. Prolonged extreme hot weather followed by a heavy rain disturbs the surface water to cool lower temperatures where the cool heavy water layer sink to the bottom floor due to gravity can cause turnover of water in ponds [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Temperature upon Water Turnover in Fish Ponds in Northern Thailand

Sriyasak¹,

Chitmanat²,

Whangchai³

et al. 2013

IJG

View full text Add to dashboard Cite

Fish culture in earthen ponds is an important source of income for farmers in northern Thailand. Water quality in ponds has strong impacts on fish production farmers' return and is sensitive to weather and climate. Low levels of dissolved oxygen in fish ponds are major cause of mass mortality. Stratification with depth in ponds followed by rapid turnover or exchange of surface and bottom water can expose fish to dangerously low dissolved oxygen levels. The main purpose of this study was to observe the effects of weather on stratification and subsequent water turnover in fish ponds in northern Thailand, especially in the winter and rainy season, when stratification was expected to be most severe. Temperature and water quality measurements were made in fish ponds at 18 farms with depths ranged from 0.8 -2.0 m and size of 0.16 -0.64 ha. Measurements were made during January and May 2013. Fish farm pond sites were divided into two groups based on elevation above sea level: low (<400 masl) and high (>400 masl) and categorized into 3 types of farming: commercial, integrated and subsistence. In lower elevation sites, water turnover occurred at night between 22.00 and 02.00 in winter and between 18.00 and 02.00 in rainy season. At higher elevation, turnover occurred in ponds between 20.00 and 22.00 in winter and between 14.00 and 18.00 in rainy season. Turnover was slower in the lower elevation than in higher elevation zones and generally occurred earlier during the rainy season than in the winter. Mean DO in winter was significantly higher (p < 0.05) than in rainy season, whilst water temperature and amount of ammonia-nitrogen during the rainy season was significantly higher (p < 0.05) than in winter. Turnover improves distribution of dissolved oxygen through the water column and minimizes organic matter accumulation. Cloud cover during the rainy season may have contributed to limit oxygen production and thus may have significantly affect water quality in ponds. Fish farmers should consider more explicitly the role of temperature and cloud conditions when managing dissolved oxygen levels in their fish ponds. Therefore, efficient pond aeration or pond mixing strategies for reducing stratification still plays an important component for providing sound pond management in tilapia production ponds.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Temperature upon Water Turnover in Fish Ponds in Northern Thailand

Sriyasak¹,

Chitmanat²,

Whangchai³

et al. 2013

IJG

View full text Add to dashboard Cite

show abstract

“…Survival varied with species and site, and the results are presented in Table 6 (Pandit and Nakamura, 2010). Oreochromis niloticus had reduced growth performance at 35°C and 37°C which was attributed to decreased food intake and high rate of gastric evacuation at such elevated temperatures.…”

Section: Survival and Onset Of Reproduction Of Fish Speciesmentioning

confidence: 95%

GROWTH PERFORMANCE, SURVİVAL AND BREEDİNG OF Ore-ochrmis niloticus AND Oreochromis macrochir REARED UNDER GREENHOUSE CONDITIONS

Zvavahera¹,

Hamandishe²,

Saidi³

et al. 2018

Aquat Res

View full text Add to dashboard Cite

The growth, survival and breeding performance of Oreochromis niloticus and Oreochromis macrochir was investigated in earthen ponds under greenhouse conditions at Henderson Research Institute. Six experimental ponds, three in open atmosphere and three under greenhouses were set up. Each pond was further subdivided by hapas to make 12 experimental units of which half were stocked with Oreochromis niloticus and the other Oreochromis macrochir. Fish weights and lengths were recorded fortnightly and feed intake was based on current biomass. Fish sex and breeding activities were noted. Results showed that mean weight gain for O. niloticus was significantly higher than O. macrochir both in greenhouse ponds and open ponds. Feed intake was also higher leading to greater weight gains in the greenhouse than in open ponds.

show abstract

“…If the body metabolism was increased, feed intake also increased. Reported by Pandit (2010), when the rearing temperature raised to 32 °C, fish feed consumption also increased. Single and double MT immersion at 36 °C not affected Nile tilapia survival.…”

Section: Discussionmentioning

confidence: 99%

Aromatase gene expression and masculinization of Nile tilapia immersed in water 36 °C containing 17α-methyltestosterone

Fauzan¹,

Soelistyowati²,

Zairin³

et al. 2017

Jurnal Akuakultur Indonesia

View full text Add to dashboard Cite

Immersion of undifferentiated larval tilapia in high temperature and 17α-methyltestosterone (MT) can increase the male ratio. However, the effectiveness of immersion in high temperature of water containing MT remains to be evaluated. The purposes of this study were: 1) evaluate the male ratio, growth, and survival of tilapia, and 2) analyze the aromatase brain-type gene expression level in tilapia after immersing in high temperature (36 °C) containing MT at 2 mg/L for four hour with single and double immersion. Aromatase gene expression was analyzed by semiquantitative RT-PCR (sqRT-PCR) method. The result showed that higher monosex male ratio was obtained by single immersion of MT at 36 °C at room temperature. Gene expression level of aromatase brain-type was lower on single immersion and increased significantly at second immersion compared to control (immersion at room temperature without MT). Immersion using MT and high temperature had no significant effect on fish survival. However the specific growth rate and fish biomass were higher than control. Thus, monosex male tilapia can be produced by single immersion of undifferentiated larvae at 36 °C temperature containing MT.Keywords: male ratio, aromatase, Oreochromis niloticus, temperature, 17α-methyltestosterone ABSTRAKPerendaman larva ikan nila yang belum terdeferensiasi kelaminnya dengan suhu tinggi dan hormon 17α-metiltestosteron (MT) dapat meningkatkan nisbah kelamin jantan. Tetapi, efektivitas perendaman menggunakan MT pada suhu tinggi belum diteliti. Tujuan dari penelitian ini adalah 1) mengevaluasi nisbah kelamin jantan, pertumbuhan, dan kelangsungan hidup ikan nila, dan 2) menganalisis ekspresi gen aromatase tipeotak pada ikan direndam menggunakan MT dengan dosis 2 mg/L selama empat jam sebanyak satu dan dua kali perendaman pada suhu 36 °C. Ekspresi gen aromatase dianalisis menggunakan metode RT-PCR semi-kuantitatif (sqRT-PCR). Hasil penelitian menunjukkan bahwa kombinasi perendaman MT satu kali pada suhu 36 °C lebih tinggi menghasilkan ikan nila jantan monoseks dibandingkan perendaman MT satu kali pada suhu ruang. Tingkat ekspresi gen aromatase tipe otak pada perendaman satu kali lebih rendah, dan meningkat secara signifikan pada perendaman kedua dibandingkan dengan kontrol (perendaman pada suhu ruang tanpa MT). Perendaman larva menggunakan MT dan suhu 36 °C tidak berpengaruh nyata terhadap kelangsungan hidup, tetapi laju pertumbuhan spesifik dan biomassa ikan perlakuan tersebut lebih tinggi daripada kontrol. Dengan demikian, ikan nila jantan monoseks dapat diproduksi dengan perendaman satu kali pada larva yang belum terdeferensiasi jenis kelaminnya menggunakan MT pada suhu 36 °C.

show abstract

Effect of High Temperature on Survival, Growth and Feed Conversion Ratio of Nile Tilapia, <i>Oreochromis niloticus</i>

Cited by 62 publications

References 10 publications

Effects of Temperature upon Water Turnover in Fish Ponds in Northern Thailand

Effects of Temperature upon Water Turnover in Fish Ponds in Northern Thailand

GROWTH PERFORMANCE, SURVİVAL AND BREEDİNG OF Ore-ochrmis niloticus AND Oreochromis macrochir REARED UNDER GREENHOUSE CONDITIONS

Aromatase gene expression and masculinization of Nile tilapia immersed in water 36 °C containing 17α-methyltestosterone

Contact Info

Product

Resources

About