绚丽多彩的海洋生物-水母

12082簇jellyfish身体构造

水母的身体有95%以上是水份，其它包括3-4%盐类及1-2%蛋白质，没有心脏、脑、骨头或眼睛。水母体可区分三个主要部份：一是圆圆的伞体，水母通过收缩伞体挤压内腔的方式，进行移动。伞体中分布的白色线条是水管腔，用来运送养份及废物的。水母也可以藉由其体表进行呼吸作用；二是触手，可通过弯曲控制运动方向，水母触手中间的细柄上有一个小球，里面有一粒听石，这是水母的“耳朵”，含有大量神经细胞用于感知环境的变化。；三是口腕，吃食猎物，还可用于排精排卵。

Thejellyfishbodyismorethan95%water,theotherincluding3-4%saltand1-2%protein,noheart,brain,boneoreyes.Medusacandistinguishbetweenthreemainparts:oneistheroundcanopy,jellyfishbycontractingtheumbrellabodyextrusionchamber,andmove.Canopyinthedistributionofthewhitelineisthepipecavityandusedtotransportnutrientsandwaste.Jellyfish,alsocanundertakerespirationbyitssurface;Second,tentacles,canbecontrolledbybendingdirection,jellyfishtentaclesinthemiddleofthefineonthehandlewithaball,thereisagrainofstone,thisisthe"ears"jellyfish,containsalotofnervecellstoperceivechangesintheenvironment.;thirdisoralarm,feedingprey,canalsobeusedforfineovulation.发光原因

水母的发光源与其它动物是不同的，其它动物大多是荧光素、荧光酶经过氧的催化作用，因而发光。可是水母发光靠的却是一种叫埃奎林的神奇的蛋白质，这种蛋白质遇到钙离子或银离子就能发出较强的蓝色，不受酶抑制剂或其他因素的影响。

Jellyfishlightsourceisdifferentfromotheranimals,animalsaremostlyfluorescein,enzymefluorescentafteroxygencatalyst,andshine.ButjellyfishglowdependsonakindofmagicalproteincalledMrQuinoline,thisproteinorsilverwithcalciumionscanemitstrongblue,notaffectedbyenzymeinhibitorsorotherfactors.天敌

Stronganddeadlyjellyfish,thelargestnaturalenemiesisaturtle,otherthanfortheseaanemone,seaweed,conch,seacucumber,leatherbackturtlescanfreeshuttleinthegroupofjellyfish,easilybrokethemoffcontactwiththemouth,makeitscanrollupanddown,finallylosingtheabilitytoresist.

威猛而致命的水母最大的天敌是海龟，其它多为海葵，海草，海螺，海参，棱皮龟可以在水母的群体中自由穿梭，轻而易举地用嘴扯断它们的触顿，使其只能上下翻滚，最后失去抵抗能力。捕食

Jellyfishfood,mainlydiatoms,protozoa,crustaceans,polychaeteslarva,shellfishlarvae,shellfish,eggs,fishandshrimpandsmallcrustaceans,linecaterpillarandshellfishlarvaemainlydependsonthetype.Freshwaterjellyfish