PREY CAPTURE BY LUCIOCEPHALUS-PULCHER - IMPLICATIONS FOR MODELS OF JAW PROTRUSION IN TELEOST FISHES
PREY CAPTURE BY LUCIOCEPHALUS-PULCHER - IMPLICATIONS FOR MODELS OF JAW PROTRUSION IN TELEOST FISHES
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DOI：
10.1007/bf00005755
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发表时间：
1981-01-01
影响因子：
1.4
通讯作者：
LIEM, KF
中科院分区：
文献类型：
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作者：
LAUDER, GV;LIEM, KF
L. pulcher 拥有硬骨鱼中已知的最突出的下颌之一，在进食期间，前上颌骨向前延伸了头部长度 33% 的距离。进食过程中颌骨的运动按照刻板模式进行，除了颅骨极度抬高和前颌骨突出外，与硬骨鱼相似。与颅骨抬高相关的解剖学特化包括：高度修改的第一椎骨，具有独立的神经棘，后部的关节窝，第二椎骨上大大扩大的关节突，具有复杂的关节髁和高度羽状多层外轴肌肉组织，头骨上有多个腱插入点。尽管下巴极度突出，但Luciocephalus在捕获猎物时并不使用吸力；相反，猎物会被快速冲刺（峰值速度约为 150 厘米/秒）捕获，并被张开的嘴包围。先前关于上颌突出功能的假设与 Luciocephalus 下颌运动的关系进行了回顾。突出并不一定与吸力有关；摄食过程的行为方面限制了给定形态特化的生物学作用的可能范围，并且使从结构预测作用存在风险。
L. pulcher possesses one of the most protrusible jaws known among teleosts, the premaxillae extending anteriorly a distance of 33% of the head length during feeding. Jaw bone movement during feeding proceeds according to a stereotypical pattern and resembles that of teleosts except for extreme cranial elevation and premaxillary protrusion. Anatomical specializations associated with cranial elevation include: a highly modified 1st vertebra with a separate neural spine, articular fossae on the posterior aspect, greatly enlarged zygapophyses on the 2nd vertebra with complex articular condyles and highly pinnate multilayered epaxial musculature with multiple tendinous insertions on the skull. Luciocephalus, despite the extreme jaw protrusion, does not use suction during prey capture; rather, the prey is captured by a rapid lunge (peak velocity of .apprx. 150 cm/s) and is surrounded by the open mouth. Previous hypotheses of the function of upper jaw protrusion are reviewed in relation to jaw movements in Luciocephalus. Protrusion is not obligatorily linked with suction feeding; behavioral aspects of the feeding process limit the possible range of biological roles of a given morphological specialization and make prediction of role from structure risky.