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目的探讨大黄鱼幼鱼鳃的显微和超微结构,为大黄鱼幼鱼的呼吸和对盐度的适应生理提供参考。方法应用石蜡及超薄切片,采用HE染色,分别在光镜和透射电镜下观察大黄鱼幼鱼鳃的显微和超微结构。结果大黄鱼幼鱼鳃丝结构和其他硬骨鱼基本相似,鳃丝呈梳状连续排列在鳃弓上,鳃小片紧密排列在鳃丝两侧。鳃小片由上皮细胞、内皮细胞、柱细胞和毛细血管网构成。鳃小片上和鳃小片基部都分布有泌氯细胞,鳃小片基部泌氯细胞数量较多,细胞内具有微小管系统,线粒体数量丰富。结论大黄鱼幼鱼鳃结构与其他硬骨鱼基本类似,大黄鱼鳃的结构可能是其对盐度变化有较强适应能力的原因。
Objective To investigate the gill microstructure and ultrastructure of juvenile yellow croaker (Larix cochinchinensis), providing reference for the respiration and physiological adaptation of salinity to juvenile large yellow croaker. Methods Paraffin and ultrathin sections were stained with HE. The microscopic and ultrastructure of gills were observed under light microscope and transmission electron microscope respectively. Results The structure of gill filaments in juvenile large yellow croaker was similar to that of other bony fish. The gill filaments were arranged in a row on the gill arch and the gill pits were closely arranged on both sides of the gill filaments. Gill pieces from epithelial cells, endothelial cells, columnar cells and capillary network. Chlorophyll cells were distributed on the gills and on the base of the gills, and the number of chloride cells in the gill patches was small. There were microtubules in the cells and the number of mitochondria was abundant. Conclusion The gill structure of juvenile large yellow croaker is similar to that of other bony fish. The gill structure of big yellow croaker may be the reason for its strong adaptability to salinity changes.