【摘要】 据1989～1994年的调查研究,甘肃夏河县甘加高山草原共有蝗虫30余种,其中主要种类有狭翅雏蝗、宽须蚁蝗、红翅皱膝蝗、鼓翅皱膝蝗、小翅雏蝗和邱氏异爪蝗。根据发生时期的不同,可将草地蝗虫划分为早、中、晚3种类型。蝗蝻的发育历期在种类之间差异较大,以早期发生的宽须蚁蝗最长,而晚期发生的小翅雏蝗最短。从孵化到成虫死亡所经历的时间以晚期发生的种类最短。狭翅雏蝗的繁殖力在6种蝗虫中为最高,每雌产卵量平均达125粒。更多还原

【Abstract】 30 grasshopper species, in which Chorthippus dubius (Zub. ), Ch. fallax (Zub. ), Myrmeleotettix palpalis (Zub. ), Angaracris rhodopa (F. -W. ) , A. barabensis (Pall. ), Euchorthippus cheui Hsia were dominant, were found in the investigation in Ganjia High-Mountain Grassland, Xiahe County, Gansu Province in 1989-1994. In accordance with the different occurrence times, these grasshopper species were divided into three occurrence types, namely, the early-, middle- and late-period types. There were obvious differences of developmental durations in nymphal stage among these types, that of Ch. fallax, belongs to early-period types, was longest, while that of A. baradensis, belongs to late-period type, was shortest. The whole developmental duration, from hatching of egg to the death of adult, of late-period type was shortest. A-mong the six dominant species, the fecundity of Ch. dubius, which average was up to 125 eggs/female, was highest.更多还原