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Does Parapineal in Channa punctatus (BI.) have a Relationship with Air-breathing Habit?

机译：Channa punctatus（BI。）的对位鼻与呼吸习惯有​​关吗？

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摘要

A well-developed parapineal organ has been found to be present in Channa punctatus (Bl.) fry up to the size of 12 mm. The parapineal organ is situated on the left side of the brain near the pineal stalk and sends nerve tract to the left habenular nucleus. In fish above 12 mm size the organ degenerates and no parapineal is seen in Channa punctatus of 15mm. The function of parapineal organ in fish is not known definitely. No apparent correlation between presence / sizes of parapineal in fish with salinity, or latitude of geographical distribution thereby, with light regime and temperature is known. It is the 10-11 mm size when Channa punctatus takes to air breathing and surface breaking habit is seen. A possible relationship of air breathing habit and degeneration of parapineal organ in the fish has been discussed.
机译：已发现在马鞭草（Chunna punctatus，Bl。）鱼苗中发育到12毫米大小的成熟的副脑器官。松果体器官位于大脑的左侧，靠近松果茎，并向左侧的唇状核发送神经束。在直径大于12毫米的鱼类中，器官退化，在15毫米的短尾小鹦鹉中未见到任何副鼻窦。鱼类中的副神经器官的功能尚不清楚。尚不清楚盐度或鱼类的地理分布纬度与光度和温度之间的关系，在鱼类中，副峰的存在/大小之间没有明显的相关性。当Channa punctatus进行呼吸并观察到表面破裂的习惯时，它的大小为10-11毫米。讨论了呼吸习惯与鱼类副臂器官退化的可能关系。

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