What defense doesSchouwia purpurea (Cruciferae) have against the desert locust?

Autor:	Max Deschamps, Youssef Rahal, Said Ghaout, Anne Marie Mainguet, Alain Louveaux
Rok vydání:	1991
Předmět:	biology Orthoptera General Medicine biology.organism_classification Biochemistry Acrididae Horticulture chemistry.chemical_compound Habitat chemistry Glucosinolate Botany Dry matter Acridoidea Desert locust Ecology Evolution Behavior and Systematics Feces
Zdroj:	Journal of Chemical Ecology. 17:1499-1515
ISSN:	1573-1561 0098-0331
DOI:	10.1007/bf00984684
Popis:	A field study of the food eaten by solitary desert locusts was carried out in a winter breeding area in Mauritania. The food eaten, determined by the plant epidermis found in fecal pellets, was compared to the plant's availability in the habitat.Schouwia purpurea, well represented in the diets, was dominant at the study site. Adults had a preference forTribulus terrester. Growth and feeding on these two plants were compared. The high water content ofS. purpurea leaves limited the dry matter eaten and slowed down growth. Glucosinolates were separated and quantified by gas chromatography. There are 132μmol/g dry matter in green leaves. In multiple choice tests, with paper disks, glucosinolate extracts were phagostimulant at a low concentration (21μmol/g dry matter) and repulsive at a higher one (214μmol/ g dry matter). Biting behavior onS. purpurea was recorded and analyzed on video. The importance ofSchouwia purpurea in desert locust habitats and its defenses is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af6d7b451c49eb770d1abe2dd05ae939 https://doi.org/10.1007/bf00984684 Zobrazit plný text záznamu Full text from SpringerLink