文章摘要
孙晓明,孟庆闻.鲢、鳙滤食及消化器官的发育、构造与食性的相互关系[J].水产学报,1992,16(3):202~212
鲢、鳙滤食及消化器官的发育、构造与食性的相互关系
DEVELOPMENT AND STRZTCTiJRE DT THE FILTER AND DIGESTIVE ORGANS AND THEIR RELATIONS WITH THE FOOD HABITS IN SILVER CARP AND BIGHEAD
投稿时间:1991-11-25  修订日期:1992-01-01
DOI:
中文关键词:     个体发育  滤食及消化器官  形态构造与功能
英文关键词: Hypophthalmichthys molitrix  Aristichthys nobilis  ontogenesis  filter and digestive organs  morphological structure and function
基金项目:
作者单位
孙晓明 浙江省水产局,杭州 310007 
孟庆闻 上海水产大学 200090 
摘要点击次数: 1924
全文下载次数: 1330
中文摘要:
      本文通过大体解剖、显微解剖、组织切片及扫描电镜等方法研究鲢、鳙不同发育阶段滤食及消化器官与食性的相互关系。鳃耙左右侧对称,从外向内面积递减。鲢全长26mm时,分离的鳃耙间开始出现桥形横联;全长 85mm,开始形成外鳃耙网。鳙鳃耙的分化发生于全长 41—99mm。成鱼鳃耙均有许多粘液孔;仔鱼期鳃耙端部无粘液孔,鳃耙沟中有少量粘液孔,鳃耙基部侧缘有侧突的雏型。腭褶表面均有次级腭褶及微腭褶,微腭褶表面有味蕾分布。腭褶内部、咽上器官周围及每一鳃耙管外围均有与滤食有关的肌纤维群。鲢、鳙肠管的长度及直径发育早期相同,后期鳙的肠管短于鲢,管径大于鲢。滤食下限规格,鲢全长7.8mm 时为 25,全长56mm 以后为 10μ;鳙终生为 25μ。着重探讨了进食过程及有关器官在进食过程中的作用。
英文摘要:
      The different stages of the development and morphological changes of the filter and digestive oxgans in silver carp (Hypophathalmichthys moli-trix) and bighead (.Aristichthys nobilis) were observed with tissue section, gross anatomy,microscope and scanning electron microscope. At both sides of the head,the gill-rakers of these species are almost equal in numbers and the dimensions gradually decreased from outer to inner side. When the silver carp reaches the total length of 26mm, the separable gill一rakers begin to appear in 1-2 transverse bri-dges and connected with each others. TL. 85mm, they gradually appear in gill-raker's net (sieve plate).When, the bighead reaches TL. 41-99mm, they begin to differentiate board and narrow gill--raker.A lot of mucous pores are found at the gill-rakers in adult; but without at its tip, only a few at its groove in larvae and the lateral margin of gillrakers appear in model papillae. At the surface of pala-tine folds there are secondary and micro--palatine folds, and also the haste buds scattered at the top of the micropalatine folds. There are many muscle fibers in the inner side of the palatine folds, the each gill--taker's tube and outer side of supra-pharyngeal organs. The length and diameter of intestine tube ara similar in the early stage of both species. Afterward, its length is shorter and the diameter is larger in bighead. It has found. that the filter size has close relation to the gap and papillae of gill-rakers. According to the information gathered of the silver carp,TL 7.8mm the filter size is 25μ in lower limitation, and 10μ in adult. As to the bighead, the filter size is 20--30μ, throughout its ontogenesis. The feeding progress and the function of relative organs are discussed in detail.
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看