euphausiacea การใช้

• The order Euphausiacea comprises two genera with a total of 85 species.
• There have been many theories of the location of the order Euphausiacea.
• It also supports a close relationship between Euphausiacea and Decapoda.
• Immature specimens feed on small deep-sea fishes and crustaceans, especially Euphausiacea.
• Mature hake feed mainly on fish, squid, and crustaceans, especially Mysidacea and Euphausiacea.
• The blue whale mostly feeds on krill ( " euphausiacea " ) which is a small, abundant crustacean.
• One study supports the monophyly of Eucarida ( with basal Mysida ), another groups Euphausiacea with Mysida ( the Schizopoda ),
• Gopalakrishnan, K . and E . Brinton . ( 1968 ) Preliminary observations on the distribution of Euphausiacea from the International Indian Ocean Expedition.
• ,the order Euphausiacea is believed to be monophyletic due to several unique conserved morphological characteristics ( autapomorphy ) such as its naked filamentous gills and thin thoracopods and by molecular studies.
• Analysis of the mitochondrial genome supports the monophyly of Brachyura ( crabs ), Caridea ( shrimps ), Euphausiacea ( krill ), Penaeidae ( prawns ) and Stomatopoda ( mantis shrimps ).
• Nemoto, T ., M . Araki and E . Brinton . ( 1973 ) Clinal variation in the frequency of one-and two-spined forms of " Thysanoessa inermia " ( Kroyer 1849 ) ( Euphausiacea ) in the North Pacific.