A method for mass-rearing caddisfly, Cheumatopsyche brevilineata (Iwata) (Trichoptera: Hydropsychidae), as a new test organism for assessing the impact of insecticides on riverine insects

• Published in: Applied Entomology and Zoology Vol. 44; no. 2; pp. 195 - 201
• Main Authors: Yokoyama, A.(National Inst. of Agro-Environmental Sciences, Tsukuba, Ibaraki (Japan)), Hamaguchi, K, Ohtsu, K, Ishihara, S, Kobara, Y, Horio, T, Endo, S
• Format: Journal Article
• Language: English
• Published: JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY 2009
• Subjects: AMBIENTE ACUATICO; ANIMAL DE LABORATOIRE; ANIMALES DE LABORATORIO; AQUATIC ENVIRONMENT; AQUATIC INSECTS; Caddisfly; Cheumatopsyche brevilineata; COURS D'EAU; CURSOS DE AGUA; Freshwater; Hydropsychidae; INSECTE AQUATIQUE; INSECTICIDAS; INSECTICIDE; INSECTICIDES; INSECTOS ACUATICOS; LABORATORY ANIMALS; mass rearing; MILIEU AQUATIQUE; POLLUTION DE L'EAU; POLUCION DEL AGUA; REARING TECHNIQUES; riverine insect; RIVERS; TECHNIQUE D'ELEVAGE; TECNICAS DE CRIANZA; TRICHOPTERA; WATER POLLUTION
• ISSN: 0003-6862; 1347-605X
• DOI: 10.1303/aez.2009.195

This paper introduces a new method for the mass-rearing of a typical riverine insect, Cheumatopsyche brevilineata. This caddisfly could be easily reared continuously under laboratory conditions in rotary-flowing water. The rearing system supported the full life cycle year-round, and the culture scale supplied sufficient larvae for bioassays every week. The hatchability of egg masses dipped at F3 and F9 but was otherwise stable at ≥70%. The sensitivity of first-instar larvae to fenitrothion was stable throughout successive generations of a fenitrothion-sensitive strain, and increased gradually in a resistant strain.