SciELO - Scientific Electronic Library Online

 
vol.20 númeroUNICOAdubação do milho: XXI - Ensaios com diversos fosfatos (7.ª série.)Velocidade de penetração do tubo polínico em Coffea arabica L. índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Bragantia

versão impressa ISSN 0006-8705

Resumo

MENDES, Luiz O. T.. Longevity of dysdercus: III - Adult males of dysdercus mendesi bloete, under laboratory conditions. Bragantia [online]. 1961, vol.20, n.unico, pp. 471-494. ISSN 0006-8705.  http://dx.doi.org/10.1590/S0006-87051961000100011.

The results of a longevity study of 982 adult males of Dysdercus mendesi Bloete are presented; this population was divided in two groups: a) 722 virgin males, and b) 260 mated males. The study was done under laboratory conditions; however, the results were also grouped according to the average temperature under which the insects lived. A marked influence of temperature upon their longevity was noticed. For the entire population, the mean longevity was 31.28 days; the mated males lived an average of 32.05 days, and the virgin males 30.98 days. For temperatures averaging 15-18ºC the mated males lived 47.01 days and the virgin males 40.93 days. i.e. the mated males lived about 6 days more than the virgin males, under such mean temperatures. For temperatures averaging 18-20ºC, the mated males lived 37.34 days, and the virgin ones 26.64 days; for temperatures averaging 20-22ºC the mated males lived 21.96 days and for temperatures averaging 20-23ºC the virgin males lived only 14.82 days.

        · resumo em Português     · texto em Português     · pdf em Português