Promotion of initial swimbladder inflation in Pacific bluefin tuna, Thunnus orientalis (Temminck and Schlegel), larvae

Promotion of initial swimbladder inflation in Pacific bluefin tuna, Thunnus orientalis (Temminck and Schlegel), larvae
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促进太平洋蓝鳍金枪鱼、东方金枪鱼(Temminck 和 Schlegel)、幼鱼的初始鳔膨胀

DOI:
10.1111/j.1365-2109.2011.02933.x
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发表时间:
2012
影响因子:
2
通讯作者:
Yoshifumi Sawada
Yoshifumi Sawada
中科院分区:
农林科学4区
文献类型:
--
作者:
Michio Kurata;M. Seoka;Y. Nakagawa;Y. Ishibashi;H. Kumai;Yoshifumi Sawada

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研究了太平洋蓝鳍金枪鱼(Thunnus orientalis)幼虫的初始膀胱膨胀(ISI),以提高养殖幼鱼的存活率。实验1探讨不同水面条件下ISI的促进和抑制作用;包括使用表面撇油器去除自生表面物质(SS),用液体石蜡层(LP)和油膜(of)覆盖水面,以及对照(未经处理,NT)。SS患者的通货膨胀率(62.2%)明显高于NT(11.9%)、LP(2.7%)和OF(3.9%)。这表明去除养殖水体表面抑制幼虫吞咽空气的物质可以促进PBT幼虫的ISI。实验2旨在通过四种不同的去油膜时期,分别为孵化后3 ~ 8天(SF3D)、4 ~ 8天(SF4D)、5 ~ 8天(SF5D)、6 ~ 8天(SF6D),来阐明开始脱脂以促进ISI的合适年龄。SF3D的ISI频率显著改善(80.2%),但SF4D、SF5D和SF6D的ISI频率很差(17.8-7.5%)。这意味着在实际的PBT幼虫养殖中,需要在不错过一个狭窄窗口(3 dph 1天)的情况下去除油膜,以促进ISI。
Initial swimbladder inflation (ISI) of Pacific bluefin tuna (PBT), Thunnus orientalis, larvae was studied to increase the survival of cultured larvae. Experiment 1 was conducted to explore promotion and inhibition of ISI under different water surface conditions; including the use of surface skimmer to remove autogenous surface substances (SS), covering the water surface with liquid-paraffin-layer (LP) and oil film (OF), and a control (non-treatment, NT). Significantly higher inflation frequency was observed in SS (62.2%) than NT (11.9%), LP (2.7%) and OF (3.9%). This indicates that ISI in PBT larvae can be promoted by removal of surface substances on rearing water which inhibit larval air gulping. Experiment 2 aimed to elucidate proper day of larval age to start skimming for promoting ISI with four different periods of oil film removal: from 3 to 8 (SF3D), 4 to 8 (SF4D), 5 to 8 (SF5D), 6 to 8 (SF6D) days-post-hatch (dph). Significant improvement in ISI frequency was observed in SF3D (80.2%) but the frequency was very poor in SF4D, SF5D, and SF6D (17.8–7.5%). This implies the need of oil film removal without missing a narrow window, 1 day of 3 dph, to promote ISI in practical PBT larviculture.
完成太平洋蓝鳍金枪鱼、东方金枪鱼在水产养殖条件下的生命周期
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DOI: --
发表时间: 2003
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太平洋蓝鳍金枪鱼、东方金枪鱼(Temminck 和 Schlegel)、幼鱼的昼夜和个体发育身体密度变化
DOI: --
发表时间: 2006
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影响因子: --
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