Fate of Ingested Aristolactams from Aristolochia chilensis in Battus polydamas archidamas (Lepidoptera: Papilionidae)

Insects

Alejandro Urzྪ¹  Angel Olguín¹ 

关键词: Aristolochia chilensis;    aristolactams;    Battus polydamas archidamas;    larvae;    sequestration;    excretion;    metabolization;   

DOI  :  10.3390/insects4040533

来源: mdpi

【 摘 要 】

We performed a sequestration study of aristolactams (ALs) from Aristolochia chilensis in Battus polydamas archidamas (Lepidoptera: Papilionidae) by examining the AL content of the plant, fifth instar larvae, osmeterial secretion, pupae, exuviae and feces. Aristolactam-I (AL-I) and aristolactam-II (AL-II) present in A. chilensis are sequestered by fifth instar larvae of B. polydamas archidamas. There is a preferential sequestration of AL-II, or a more efficient metabolization and excretion of AL-I, by the larva. No ALs were found in the osmeterial secretion, pupae and exuviae; in addition, little AL-I and no AL-II were found in larval frass. The two lactams, particularly AL-I, are extensively metabolized to other products in the larva. A reasonable hypothesis is that the ingested ALs are oxidized to their respective aristolochic acids.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.