文章摘要
陈永乐.线纹尖塘鳢的形态生物学与核型[J].水产学报,2006,30(4):562~565
线纹尖塘鳢的形态生物学与核型
The morphological character and karyotype of Oxyeleotris lineolatus
投稿时间:2008-05-30  修订日期:2008-05-30
DOI:10.3724/SP.J.00001
中文关键词: 线纹尖塘鳢  形态特征  核型
英文关键词: Oxyeleotris lineolatus  morphological character  karyotype
基金项目:中国水产科学研究院珠江水产研究所
作者单位E-mail
陈永乐 中国水产科学研究院珠江水产研究所 gzhlzjd@163.com 
摘要点击次数: 2068
全文下载次数: 1553
中文摘要:
      
英文摘要:
      This paper reports the morphological character and karyotype of Oxyeleotris lineolatus. Oxyeleotris lineolatus is native in Australia and call ed sleepy cod. It belongs to Oxyeleotris, Eleotridae, Gobioidei, Perciformes in taxonomy. Recently, it was introduced to China and local people were not familiar with it. So we carried out this study. 30 individuals have been observed and some data were recorded. It has a large mouth that is in front and up. The mandible stands out and is longer than the up jaw. There are many rows of thin teeth in up and down jaws. The pelvie fins are located in chest and pectoral fins are large and fan like. There are two dorsal fins. The tail fin is circular. Gill rakers are sparse and the number of gill rakers is 8-12+3-4. The gas bladder belongs to physoclistaus and its stomach is strong and I-like. The intestine is thick and short and no pyloric caecas. The length of the digestive path is 48.1%-80.3% of the length of body. Its liver has two lobes and the liver weight is 4.1%-7.2% of the body weight. The digestive organs characters are same as the trait of flesh eater fish. Its scale belongs to ctenoid scale and its body surface shows several long lines. There is not lateral line in the body. The number of vertebra is 26-27 and it has 10-11 pairs rib. The number of diploid chromosome is 2n=46 and the karyotype formula is 2sm+8st+36t,NF=48. The relative length of chromosome is from 1.37% to 3.48% and it is continuity. No strange size chromosomes relation to sex was observed. The karyotype of Oxyeleotris lineolatus is similar to that of Oxyeletris marmoratus Bleeker from South East Asia and both of them belong to Oxyeleotri. It testifies the correctness of traditional classification on cytology.
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看