摘要
用中性红标记水螅饵料、手术触手及组织切片等方法，研究水螅的消化、排遗和触手生长模式。结果表明：１．水螅在消化期间常出现纵向收缩运动和局部横向扩张运动，运动方式特点与腔肠的消化、物质输送及排遗机能相适应。２．触手腔食物泡残骸逐渐贮存于触手腔顶端，待顶端衰老死亡组织破裂时喷出体外。３．沿触手近端至远端，组织摄取养料的机能呈梯度衰退；组织生长速率亦呈梯度减慢，直至解体。触手组织不断生长，推移，衰老死亡组织间断地在顶端脱落。４．在良好的营养条件下能人工产生畸形触手。
Digestion,defecation and tentacles'growth were observed by marking the food with 0.01% neutral red,operating the tentacle and cutting sections.The results indicated:1.The dorsal contraction and local muscle expention movement of the animal during the digestion geared up the digestion,transporting of food and defecation.2.The debris of food was piled up on the top of tentacle cavity and was evacuated when the top tissue aged and cracked.3.The tissue at a distance from half of the total length possed the ability of growth.4.Abnormal tentacle was developed under condition of rich nutrition.
出处
《动物学杂志》
CAS
CSCD
北大核心
1996年第2期1-5,共5页
Chinese Journal of Zoology
关键词
水螅
消化
排遣
触手生长
Pelmatohydra pseudoligactis Digestion Defecation Tentaeles'growth
