食物名英文

Ascidians

食物类英文

Aquatic foods

食物群

Other aquatic foods

科学名称

Ascidiacea

描述

Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of the polysaccharide tunicin, as compared to other tunicates which are less rigid. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%. While members of the Thaliacea and Larvacea swim freely like plankton, sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) forming colonies up to several meters in diameter. Sea squirts feed by taking in water through the oral siphon. The water enters the mouth and pharynx, flows through mucus-covered gill slits (also called pharyngeal stigmata) into a water chamber called the atrium, then exits through the atrial siphon.

id

832

食物含有的化合物

化合物	说明	含量	单位
C18:2, n-6	Rye bread crumbs with brown sugar, average values	--804	mg/100g
Fatty acids, total mono-unsaturated	Rye bread crumbs with brown sugar, average values	--260	mg/100g
C18:1, n-9	Rye bread crumbs with brown sugar, average values	--260	mg/100g
Fatty acids, total saturated	Rye bread crumbs with brown sugar, average values	--260	mg/100g
C18:0	Rye bread crumbs with brown sugar, average values	--12	mg/100g
C16:0	Rye bread crumbs with brown sugar, average values	--248	mg/100g
Sugars, total	Rye bread crumbs with brown sugar, average values	--40400	mg/100g
Sucrose	Rye bread crumbs with brown sugar, average values	--37100	mg/100g
Maltose	Rye bread crumbs with brown sugar, average values	--930	mg/100g
Glucose	Rye bread crumbs with brown sugar, average values	--1450	mg/100g
Fructose	Rye bread crumbs with brown sugar, average values	--950	mg/100g
Iodine (I)	Rye bread crumbs with brown sugar, average values	--0.0034	mg/100g
Zinc (Zn)	Rye bread crumbs with brown sugar, average values	--2.32	mg/100g
Iron (Fe)	Rye bread crumbs with brown sugar, average values	--5.7	mg/100g
Phosphorus (P)	Rye bread crumbs with brown sugar, average values	--100	mg/100g
Magnesium (Mg)	Rye bread crumbs with brown sugar, average values	--66	mg/100g
Calcium (Ca)	Rye bread crumbs with brown sugar, average values	--20	mg/100g
Potassium (K)	Rye bread crumbs with brown sugar, average values	--418	mg/100g
Sodium (Na)	Rye bread crumbs with brown sugar, average values	--588	mg/100g
Niacin, from tryptophan	Rye bread crumbs with brown sugar, average values	--0.75	mg/100g