PATTERNS OF SEROTONIN AND SCP IMMUNOREACTIVITY DURING METAMORPHOSIS OF THE NERVOUS-SYSTEM OF THE RED ABALONE, HALIOTIS-RUFESCENS
PATTERNS OF SEROTONIN AND SCP IMMUNOREACTIVITY DURING METAMORPHOSIS OF THE NERVOUS-SYSTEM OF THE RED ABALONE, HALIOTIS-RUFESCENS
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DOI：
10.1002/neu.480230705
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发表时间：
1992-09-01
期刊：
影响因子：
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通讯作者：
TRUMAN, JW
中科院分区：
文献类型：
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作者：
BARLOW, LA;TRUMAN, JW
红鲍的幼虫依赖外部化学信号来触发变态;因此，变态的时间取决于幼虫与适当基质的偶然相遇。我们研究了中枢神经系统（CNS）的发展上的变态的时间的影响，集中在5-羟色胺和小心脏活性肽（SCP）免疫阳性神经元在大脑神经节的模式。受精后4天，大脑神经节有五对降钙素免疫反应（IR）神经元，其中一对（V细胞）支配软腭。这种细胞的补充保持稳定，只要幼虫阶段仍然存在，但变态导致V细胞的快速损失。在SCP-IR神经元的情况下，一对是目前之前的变态能力，但作为幼虫继续在没有诱导线索的情况下，年龄，额外的对逐渐增加。变形导致SCP-IR神经元添加的加速。这种发育模式的分离很好地适应了鲍鱼幼虫变态时间的固有不确定性。
Larvae of the red abalone, Haliotis rufescens, rely on external chemical cues to trigger metamorphosis; thus, the. timing of metamorphosis is dependent upon the larva's chance encounter with the appropriate substrate. We examined the effect of the timing of metamorphosis on the development of the central nervous system (CNS), concentrating on the pattern of serotonin and small cardioactive peptide- (SCP) immunopositive neurons in the cerebral ganglia. By 4 days postfertilization the cerebral ganglion has five pairs of serotonin-immunoreactive (IR) neurons, one pair of which (the V cells) innervate the velum. This complement of cells remains stable for as long as the larval stage persists but metamorphosis causes the rapid loss of the V cells. In the case of SCP-IR neurons, one pair is present prior to metamorphic competency, but as larvae continue to age in the absence of inducing cues, additional pairs are gradually added. Metamorphosis causes an acceleration in SCP-IR neuron addition. This separation of developmental patterns is well adapted for the inherent uncertainty of the timing of metamorphosis in abalone larvae.