软体动物类图鉴全.ppt

魷魚解剖圖 魷魚squid 阿根廷魷魚 海葵類(Actiniaria) 一、頭足類： 烏賊(cuttlefish)、魷魚(squid, calamary)、 鎖管(squid)、章魚(octopus)、透抽(neritic squid)等。 二、其它類： 水母(jellyfish)、海參(sea cucumber)、 海膽(urchin)、海綿 (sponge)、珊瑚(corallium)、 海綿(sponge)、水螅(hydras)等。 頭足類等圖鑑 魷魚squid Squid have differentiated from their ancestral molluscs in such a way that the body plan has been condensed antero-posteriorly and extended dorso-ventrally. What before may have been the foot of the ancestor is now modified into a complex set of tentacles and highly developed sense organs, including advanced eyes similar to those of vertebrates. The shell of the ancestor has been lost, with only an internal gladius, or pen, remaining. The majority of squid are no more than 60 cm long, although the giant squid may reach 13 m in length. In 2003 a large specimen of an abundant but poorly understood species, Mesonychoteuthis hamiltoni (the Colossal Squid) was discovered. This species may grow to 14 m in length, making it the largest invertebrate. It also possesses the largest eyes in the animal kingdom. Giant squids are featured in literature and folklore, with a frightening connotation. The Kraken is a legendary tentacled monster possibly based on sightings of real giant squids. A Colossal Squid, weighing 495 kg and about 10 meters long, was caught by a New Zealand fishing vessel off the coast of Antarctica in February 2007. Gaint squid in Melbourne Aquarium 玄妙微鰭烏賊 日本槍烏賊 Gaint squid 萊氏擬烏賊 Sepioteuthis lessoniana 蘇門答臘槍魷魚 Loliolus sumatrensis (Nipponololigo sumatrensis) 尤氏槍魷魚 Loliolus uyii (Nipponololigo uyii) 火槍魷魚 Loliolus beka (Nipponololigo beka) 基隆海域特有之鎖管類 西伯加槍魷魚 Uroteuthis sibogae (Photololigo sibogae) 杜氏槍魷魚 Uroteuthis duvacelii (Photololigo duvacelii) 劍尖槍魷魚(真鎖管) Uroteuthis edulis (Photololigo edulis) 中國槍魷魚 Uroteuthis chinensis (Photololigo chinensis) ； 耳烏賊 日本無針烏賊 四盤耳烏賊 烏賊cuttlefish 烏賊cuttlefish Cuttlefish average 30 cm long and live for only about 18 months. They are nocturnal animals that feed at ni