Life cycle and nymphal feeding of Besdolus ravizzarum （Plecoptera： Perlodidae）, a threatened stonefly
Life cycle and nymphal feeding of Besdolus ravizzarum （Plecoptera： Perlodidae）, a threatened stonefly作者机构：Dipartimento di Scienze dell'Ambiente e della Vita Universita del Piemonte Orientale Alessandria Italy Departamento de Biologia Animal Facultad de Ciencias Universidad de Granada Granada Spain
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2010年第17卷第2期
页 面：149-153页
核心收录：
学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 09[农学] 071007[理学-遗传学] 0904[农学-植物保护] 090401[农学-植物病理学] 0901[农学-作物学] 0713[理学-生态学]
主 题：conservation life history northern Italy stonefly threatened species trophic role
摘 要：We have studied some aspects of Besdolus ravizzarum biology in the Apen- nines. This stonefly has a very localized distribution in southeastern France and northern Italy. This species is considered threatened. For this reason it is especially relevant to improve knowledge about its natural history, previously unknown. Despite the large size of nymphs, this species shows a univoltine life cycle. The growth is slow but uniform from October to April or May when the short flight period occurs. The analysis of the gut con- tents indicates this species is a predator, feeding mainly on Baetidae and Chironomidae. It is notable that the development of this carnivorous species through cold periods coincides with the season with higher richness and density of potential prey in Apennine streams. Further studies are needed to improve knowledge of the distribution of the species and to start planning effective conservation efforts.
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