Reimer A A
Environ Physiol Biochem. 1975;5(4):258-66.
Palythoa variabilis (Duerden 1898) has a well-coordinated, sterotyped feeding response similar to that described for other zoanthids. The feeding reaction can be elicited by the heterocyclic amino acid proline and by some of its analogs. The addition of an OH group (hydroxyproline) or of a glycyl group (prolylglycine) annuls the activity of the proline molecule. Substitutions (thiazolidine-4-carboxylic acid) or additions (glycylproline) to the amino group do not alter the effectivity of the activator. The size of the ring can be altered within certain limits (azetidine-2-carbocylic acid and pipecolic acid) without affecting the activity of the molecule. Feeding reactions culminating with ingestion can be elicited by Marine Diesel and Bunker-C oils. Exposure to oil affects the ability of polyps to discriminate between inert and chemically active particles for 3 to 5 days; responses to proline are not altered for at least 3 days following the exposure, but become slower and are present in fewer polyps after that period. Oil is retained in the coelenteron for several days following exposure and is periodically released in the form of timy droplets.
多变列指海葵（杜尔登，1898年）具有一种协调良好、刻板的摄食反应，类似于其他群体海葵所描述的那样。脯氨酸及其一些类似物能引发这种摄食反应。添加一个羟基（羟脯氨酸）或一个甘氨酰基（脯氨酰甘氨酸）会使脯氨酸分子失去活性。对氨基进行取代（噻唑烷 - 4 - 羧酸）或添加（甘氨酰脯氨酸）不会改变激活剂的有效性。在一定限度内改变环的大小（氮杂环丁烷 - 2 - 羧酸和哌啶酸）不会影响分子的活性。船用柴油和C级燃料油能引发最终导致摄食的摄食反应。接触油会影响水螅体区分惰性颗粒和化学活性颗粒的能力，持续3至5天；接触油后至少3天内对脯氨酸的反应不变，但之后会变慢，且反应的水螅体数量减少。接触油后，油会在腔肠中留存数天，并以微小液滴的形式定期释放。
