Parámetros poblacionales de tres parasitoides (Hymenoptera: Scelionidae, Encytidae) utilizando al depredador Podisus nigrispinus (Heteroptera: Pentatomidae) como hospedero / Polpulation parameters of three parasitoids (Hymenoptera: Scelionidae, Encytidae) hosted by the predator Podisus nigrispinus (Heteroptera: Pentatomidae)
Rev. biol. trop
; Rev. biol. trop;44/45(3/1): 233-40, dic. 1996-mar. 1997. tab, graf
Article
em Es
| LILACS
| ID: lil-219063
Biblioteca responsável:
BR1.1
ABSTRACT
The reproductive parameters of Telenomus podisi, Trissolcus brochymenae (Hymenoptera Scelionidae) and Ooencyrtus sp. (Hymenoptera Encyrtidae) were studied for three generations on their natural host Podisus nigrispinus (Dallas, 1851) (Hemiptera Pentatomidae). A parasitism rate of 10 eggs/day/species was used under laboratory conditions of 27 +/- 1 degrees C, 60 +/- 10 percent RH and 14 h of photophase. No significant differences were detected between generations in terms of net reproductive rate (Ro), intrinsic rate of natural increase (rm), generation time (T) and the effect of doubling time on population increase (DT). However, T. podisi and T. brochymenae had significantly higher Ro and rm values, and lower T and DT values, with rm 1.59 and 1.50 times higher than Ooencyrtus sp., respectively. In addition the former species also had shorter egg-adult period, greater longevity of females and reproduction period than the other species. These results confirm the greater reproductive potential of T. podisi and T. brochymenae, which are commonly found parasitizing P. nigrispinus
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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Interações Hospedeiro-Parasita
/
Himenópteros
Limite:
Animals
Idioma:
Es
Revista:
Rev. biol. trop
Assunto da revista:
BIOLOGIA
/
MEDICINA TROPICAL
Ano de publicação:
1997
Tipo de documento:
Article
País de publicação:
Costa Rica