BEHAVIORAL AND ULTRASTRUCTURAL STUDIES ON THE SEDENTARY PLATYCTENEAN CTENOPHORE VALLICULA-MULTIFORMIS
BEHAVIORAL AND ULTRASTRUCTURAL STUDIES ON THE SEDENTARY PLATYCTENEAN CTENOPHORE VALLICULA-MULTIFORMIS
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DOI：
10.1007/bf00026439
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发表时间：
1991-06-28
期刊：
影响因子：
2.6
通讯作者：
WHITFIELD, PJ
中科院分区：
文献类型：
--
作者：
EMSON, RH;WHITFIELD, PJ
研究了多形金龟子的行为及其结构基础。V.多形的触须在流水中只伸展，表明伸展是由水流引起的阻力产生的。超微结构观察表明，伸展之前的突起是卷曲的中胶原纤维的反弹弹性所致，而中胶原纤维被负责主动收缩的中胶肌的收缩所压缩。滑行和爬行运动中的牵引力是由纤毛表皮细胞活动产生的。扁桃体表皮由胶质母细胞、支持细胞和含有分泌细胞和2种感受器细胞的感觉突起组成。胶原体看起来与其他鞭毛虫的非常相似。
Behaviour and its structural basis were investigated in Vallicula multiformis. V. multiformis only extends the tentacles and tentilla in flowing water, suggesting that extension is generated by water flow induced drag forces. Ultrastructural observations indicate that protrusion which precedes extension results from rebound elasticity of coiled mesogloeal fibrils, compressed by contraction of mesogloeal muscles responsible for active tentacle contraction. Traction during gliding and creeping movements is produced by ciliated epidermal cell activity. The tentillar epidermis is composed of colloblasts, supporting cells and sensory projections containing secretory cells and 2 types of receptor cells. The colloblasts appear very similar to those of other ctenophores.