Abstract

The nervous system of a pigeon slender louse, Columbicola columbae, has been studied in greater detail. C. columbae is a permanent, obligatory, and wingless insect. The central nervous system consists of a series of ganglia that supply nerves to successive body segments. The three main ganglia in the head, protocerebrum, deutocerebrum, and tritocerebrum, are fused to form the brain or supraesophageal ganglion. The nervous system of the pigeon slender louse, C. columbae (Phthiraptera: Ischnocera), consists of a U-shaped compact cerebral ganglion, subesophageal ganglion, and three thoracic ganglia. The ventral nerve cord and subesophageal ganglion are also located in the head. The three thoracic ganglions are placed in pro-, meso-, and meta-thorax. The frontal ganglion is situated anterior to the brain at a considerable distance.. KEYWORDS :Brain, Columbicola columbae, Nervous system, Pigeon slender louse

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