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 오징어의 특징 2007/02/20 22:32:17
관리자   Hit : 5825 , Vote : 610     

▶ 오징어는 머리와 다리, 몸통으로 나뉘며 다리는 10개인데 그 중에서도 2개는 특히 가늘고 긴데 이 긴 다리는 먹이를 잡을 때나 교미할 때 암컷을 힘껏 끌어안는 수단으로 쓰기 때문에 교접완(交接腕) 또는 교미완이라고 부른다.

▶ 다리와 몸통 사이에 눈과 입이 있는데 이 부분이 머리이며 몸통은 원통의 막으로 돼 있고 내장과 먹물 주머니가 들어 있으며 일명 오징어 귀라고 부르는 삼각형의 지느러미와 같은 것이 붙어있는데 이 것은 헤엄칠 때 방향키의 역할을 하는 일종의 꼬리날개인 셈이고 일반적으로 이 부분을 머리라고 생각하지만 실은 그 반대로 다리가 위치한 쪽이 위쪽이고, 또한 오징어는 머리를 앞쪽으로 해서만 헤엄치는 것은 아니다. 물을 뿜어내는 수관(水管)의 방향을 자유자재로 바꿀 수 있기 때문에 전후좌우 어디로든지 헤엄칠 수 있다.

▶ 오징어의 표피는 4개층으로 돼 있고 1층과 2층 사이에 흑갈색의 색소세포가 존재하는데 이 세포는 수축하는 성질이 있어 흥분하거나 스트레스를 받으면 적색이나 다갈색을 띠는 등 몸의 빛깔을 바꾸는 역할을 한다.



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