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首页> 外文期刊>Fisheries and Aquatic Sciences >Histological Observations and Regeneration of Barbels in Juveniles of the Chinese Longsnout Catfish Leiocassis longirostris
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Histological Observations and Regeneration of Barbels in Juveniles of the Chinese Longsnout Catfish Leiocassis longirostris

机译：中国s Cat Lei（Leocassis longirostris）幼鱼的触须的组织学观察和再生。

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摘要

Barbel structure and regenerated barbel length in the juvenile Chinese longsnout catfish Leiocassis longirostris (Gunther), were evaluated. The barbies consisted of an epidermis, a dermis, and a central rod. The epidermis harbored taste buds, granularcells and epidermal cells. The taste buds were basophilic and situated along the distal portion of the epidermis. The dermis was composed of loose connective tissue containing blood vessels pigment cells. The innermost central region was cartilage enclosed within layers of muscle layers. After 30 days, the regenerated barbel length measured 0.92 ± 0.404 mm at 15°C (regenerated growth curve: y = 0.5085x + 4.0678, r~2 = 0.9654, where y is regenerated length and x is experimental period in days), 1.88 ± 0.521 mm at 20°C (y = 0.1806x + 4.808, r~2= 0.9822), and 6.44 ± 0.751 mm at 25°C (y = 0.0914x + 4.9918, r~2 = 0.9944). Fifteen days after amputation, the regenerated length was significantly longer at 25°C than at 15 or 20°C (P < 0.05). The barbels of the Chinese longsnout catfish was the tender and flexible type, and our experimental findings provide evidence of temperature-dependent regeneration. Additional investigation of the behavior and physiology of the Chinese longsnout catfish is needed,particularly histological studies of regenerated barbels and the measurements of the numbers of taste buds per barbel under various environmental conditions.
机译：对中国长寿n鱼Leiocassis longirostris（Gunther）的杠铃结构和再生杠铃长度进行了评估。芭比娃娃由表皮，真皮和中央杆组成。表皮带有味蕾，粒状细胞和表皮细胞。味蕾是嗜碱性的，并位于表皮的远端。真皮由含有血管色素细胞的疏松结缔组织组成。最内侧的中央区域是软骨，其被包封在肌肉层内。 30天后，在15°C下测得的再生杠铃长度为0.92±0.404 mm（再生生长曲线：y = 0.5085x + 4.0678，r〜2 = 0.9654，其中y为再生长度，x为实验天数），1.88在20°C下为±0.521毫米（y = 0.1806x + 4.808，r〜2 = 0.9822），在25°C下为6.44±0.751毫米（y = 0.0914x + 4.9918，r〜2 = 0.9944）。截肢后15天，在25°C时的再生长度显着长于15或20°C时的再生长度（P <0.05）。中国longsnout cat鱼的触须是柔嫩而有弹性的类型，我们的实验结果提供了温度依赖性再生的证据。还需要进一步研究中国长寿cat鱼的行为和生理，特别是在不同环境条件下对再生杠铃的组织学研究以及每个杠铃的味蕾数量的测量。

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