Striped pyjama squids (Sepioloidea lineolata) are some of the cutest头足类,在水族馆中很少见。睡衣鱿鱼是Sepiadariidafamily, which is a group related to乌贼and cuttlefish. So it seems despite their name, pyjama squids are not really squids at all!
So what’s the difference?
睡衣鱿鱼的身体短,白天大部分隐藏在沙子下。另一方面,鱿鱼具有细长的时尚身体,并在水柱中寻找快速移动的猎物。
Pyjama squids are similar in body shape to cuttlefish, and both are stealthy ambush predators. At night, pyjama squids can be seen bobbing along the seafloor hunting for prey, while cuttlefish are masters at buoyancy, hovering motionlessly in the water.
Cuttlefish have a unique bone called the cuttlebone which is porous and made of aragonite. The cuttlebone has different gas-filled chambers important for buoyancy. Although similar in shape and color-changing abilities, the pyjama squids from theSepiadariida家庭缺乏这种多孔浮力骨。
Pyjama squids are tiny creatures with adults reaching only 3in / 7cm in length. Pyjama squids have a short life expectancy anywhere from 8 months to 2 years. And until recently your best chance at spotting a pygmy squid was snorkeling or scuba diving off the coast of Australia in their natural habitat.
In2016加利福尼亚州的蒙特利湾水族馆成功地将睡衣从鸡蛋饲养到孵化场,最后饲养到能够产卵鸡蛋的成年人。他们是第一个关闭生命周期的人,现在这些可爱的生物在美国的公共水族馆展出。
As we cannot visit public aquariums in person these days thankfully we found some websites and social media pages full of educational resources.蒙特利湾水族馆,Steinhart Aquarium, 和Aquarium of the Pacific,是三个很好的资源来了解有关头足类动物的更多信息。
Cracking the code and rearing pyjama squids in captivity is one of the many achievements in captive breeding pioneered by public aquariums. Visit your favorite public aquarium website to see how you can support pubic aquariums during this time.