Predation of Biomphalaria glabrata during the development of Belostoma anurum (Hemiptera, Belostomatidae)

Revista do Instituto de Medicina Tropical de São Paulo

M.h. Pereira¹  R.e. Silva¹  A.m.s. Azevedo¹  A.l. Melo¹  L.h. Pereira¹ 

关键词: Insecta;    Belostomatidae;    Belostoma anurum;    Predation;    Biomphalaria glabrata;   

DOI  :  10.1590/S0036-46651993000500004

来源: SciELO

【 摘 要 】

Belostoma anurum was reared under laboratory conditions. Specimens were exposed to semi-natural conditions of photo period. The mortality rate was 26.3% during the post embryonic period (38.6 ± 0.7 days). During this time the average predation of Biomphalaria glabrata was of 99.0 ± 9.4 snails. The mean increment ratio of length and dry weight per instar was of 1.4 ± 0.1 and 2.8 ± 0.5, respectively. The predation by B. anurum adults can be divided into two different periods: phase I (4.8 ± 1.4 snails/day) and phase II (1.8 ± 0.5 snails/day). The higher predation in phase I suggested the sexual maturation of the belostomatid.

【 授权许可】

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