Comparative morphology and osteology of pelvic fin-derived midline suckers in lumpfishes, snailfishes and gobies
Comparative morphology and osteology of pelvic fin-derived midline suckers in lumpfishes, snailfishes and gobies
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DOI：
10.1111/j.1439-0426.2010.01398.x
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发表时间：
2010-04-01
影响因子：
0.9
通讯作者：
Hall, B. K.
中科院分区：
文献类型：
--
作者：
Budney, L. A.;Hall, B. K.
一些鱼类使用改良的身体结构——包括腹鳍——来产生吸力，以便在动荡的环境中保持稳定。本研究比较了典型的圆尾鱼（Cyclopteridae）、蜗牛鱼（Liparidae）和虾虎鱼（Gobiidae）盆腔吸盘的形态学和骨学特征。在所研究的所有物种中，中线吸盘（骨盆吸吮器官[PSO]）由骨盆带和腹鳍I和5组成，尽管骨元素的形态具有物种特异性，但与骨盆带和腹鳍中发现的骨元素相似。因此，那些没有骨盆带的鱼类的盆腔吸液器官与盆腔带是同源的。在如此少的物种中所见的表型多样性表明，许多吸盘形态已经出现，其起源取决于肌肉、骨骼、神经和皮肤组织的协调发展。脂类和cyclopterids腹鳍软射线的结构是不寻常的，表明了鳍射线半的非常规发育模式和中线吸盘发育的潜在机制的进化。
P>Some fishes use modified body structures - including pelvic fins - to produce suction to facilitate stability in turbulent environments. This study compares the morphology and osteology of the pelvic suckers of representative lumpfishes (Cyclopteridae), snailfishes (Liparidae) and gobies (Gobiidae). In all species studied the midline sucker (pelvic suctorial organ [PSO]) is formed from the pelvic girdle and fin rays I and 5 of the pelvic fins, comprised of similar osteological elements to those found in the pelvic girdle and pelvic fin rays although the morphology of the bony elements is species-specific. Pelvic suctorial organs in those fishes that lack pelvic girdles are therefore homologous to pelvic girdles. The phenotypic diversity seen in so few species indicates that many sucker morphologies have arisen, origination depending on the concerted development of muscular, skeletal, nervous, and skin body tissues. The structure of the soft rays of the pelvic fins in the liparids and cyclopterids is unusual and indicative of unconventional developmental patterning of fin ray halves and of evolution in the underlying mechanisms responsible for the development of midline suckers.