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Broodstock development and captive maturation of hilsa ( Tenualosa ilisha ) in brackishwater pond based system
Journal of Fish Biology ( IF 1.7 ) Pub Date : 2020-08-04 , DOI: 10.1111/jfb.14426
Debasis De 1 , Panantharayil S Shyne Anand 2 , Suchita Mukherjee 1 , Prem Kumar 3 , Jagabathula Syama Dayal 4 , Ramalingam Ananda Raja 5 , Aritra Bera 6 , Vettath Raghavan Suresh 7 , Koyadan Kizhakedath Vijayan 5
Affiliation  

Successful captive broodstock development of clupeid fish, hilsa is one of the major challenges for the artificial propagation of this economically valued fish. The present study provides novel insights in to the pond reared captive broodstock development of hilsa using artificial feed. In the present study, wild collected hilsa fry (weight: 1.35±0.13 g; length: 53.84±0.95 mm) were reared in grow out ponds for six months followed by maintaining them as broodstock in other ponds using formulated feed in both the cases. After six months of pond rearing, the average body weight and length of fish were 66.76±4.53 g and 184.75±3.65 mm, respectively. In broodstock ponds, hilsa sub-adults fed with formulated feed (Crude Protein 41.06%) ensured significant advancement in ovarian maturity with gonado somatic index (GSI) of 9.09%, enhanced secondary yolk stage oocytes of 91.66% and enlargement of oocyte diameters up to 570 μ. The broodstock reached somatic growth such as average body weight (ABW) and average body length (ABL) of 383.80±27.38 g and 339.33±9.68 mm, respectively with a condition factor of 1.06±0.15. Gut content analysis revealed the better acceptability of the artificial feed. Lipid profiling of muscle and ovary during gonadal maturation revealed mobilization of fat from muscle to ovary and selective retention of some fatty acids (viz., C14:0, C18:0, C20:5, C22:6 and C20:4) in the ovary which might help in gonadal maturation. This article is protected by copyright. All rights reserved.

中文翻译:

半咸水池塘系统中hilsa ( Tenualosa ilisha )的亲鱼发育和圈养成熟

clupeid 鱼的圈养亲鱼成功开发,hilsa 是人工繁殖这种具有经济价值的鱼的主要挑战之一。本研究为使用人工饲料养殖 hilsa 的池塘养殖圈养亲体提供了新的见解。在本研究中,在养成池中将野生采集的鱼苗(重量:1.35±0.13 克;长度:53.84±0.95 毫米)饲养六个月,然后在这两种情况下使用配合饲料将它们作为亲鱼饲养在其他池塘中。经过六个月的池塘养殖,鱼的平均体重和长度分别为66.76±4.53 g和184.75±3.65 mm。在亲鱼池塘中,用配合饲料(粗蛋白 41.06%)喂养的 hilsa 亚成鱼确保卵巢成熟显着进步,性腺体细胞指数 (GSI) 为 9.09%,增强的次级卵黄期卵母细胞为 91.66%,卵母细胞直径增大至 570 μ。亲鱼达到体细胞生长,例如平均体重 (ABW) 和平均体长 (ABL) 分别为 383.80±27.38 g 和 339.33±9.68 mm,条件因子为 1.06±0.15。肠道含量分析显示人工饲料的可接受性更好。性腺成熟过程中肌肉和卵巢的脂质分析显示脂肪从肌肉转移到卵巢并选择性保留一些脂肪酸(即 C14:0、C18:0、C20:5、C22:6 和 C20:4)卵巢,这可能有助于性腺成熟。本文受版权保护。版权所有。亲鱼达到体细胞生长,例如平均体重 (ABW) 和平均体长 (ABL) 分别为 383.80±27.38 g 和 339.33±9.68 mm,条件因子为 1.06±0.15。肠道含量分析显示人工饲料的可接受性更好。性腺成熟过程中肌肉和卵巢的脂质分析显示脂肪从肌肉转移到卵巢并选择性保留一些脂肪酸(即 C14:0、C18:0、C20:5、C22:6 和 C20:4)卵巢,这可能有助于性腺成熟。本文受版权保护。版权所有。亲鱼达到体细胞生长,例如平均体重 (ABW) 和平均体长 (ABL) 分别为 383.80±27.38 g 和 339.33±9.68 mm,条件因子为 1.06±0.15。肠道含量分析显示人工饲料的可接受性更好。性腺成熟过程中肌肉和卵巢的脂质分析显示脂肪从肌肉转移到卵巢并选择性保留一些脂肪酸(即 C14:0、C18:0、C20:5、C22:6 和 C20:4)卵巢,这可能有助于性腺成熟。本文受版权保护。版权所有。性腺成熟过程中肌肉和卵巢的脂质分析显示脂肪从肌肉转移到卵巢并选择性保留一些脂肪酸(即 C14:0、C18:0、C20:5、C22:6 和 C20:4)卵巢,这可能有助于性腺成熟。本文受版权保护。版权所有。性腺成熟期间肌肉和卵巢的脂质分析显示脂肪从肌肉转移到卵巢,并选择性保留一些脂肪酸(即 C14:0、C18:0、C20:5、C22:6 和 C20:4)卵巢,这可能有助于性腺成熟。本文受版权保护。版权所有。
更新日期:2020-08-04
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