Vital statistics of Panstronglus geniculatus (Latreille 1811) (Hemiptera: Reduviidae) under experimental conditions.
Mem Inst Oswaldo Cruz
; 93(2): 257-62, 1998.
Article
em En
| MEDLINE
| ID: mdl-9698905
A statistical evaluation of the population dynamics of Panstrongylus geniculatus is based on a cohort experiment conducted under controlled laboratory conditions. Animals were fed on hen every 15 days. Egg incubation took 21 days; mean duration of 1st, 2nd, 3rd, 4th, and 5th instar nymphs was 25, 30, 58, 62, and 67 days, respectively; mean nymphal development time was 39 weeks and adult longevity was 72 weeks. Females reproduced during 30 weeks, producing an average of 61.6 eggs for female on its lifetime; the average number of eggs/female/week was 2.1. Total number of eggs produced by the cohort was 1379. Average hatch for the cohort was 88.9%; it was not affected by age of the mother. Age specific survival and reproduction tables were constructed. The following population parameters were evaluated, generation time was 36.1 weeks; net reproduction rate was 89.4; intrinsic rate of natural increase was 0.125; instantaneous birth and death rates were 0.163 and 0.039 respectively; finite rate of increase 1.13; total reproductive value was 1196 and stable age distribution was 31.2% eggs, 64.7% nymphs and 4.1% adults. Finally the population characteristics of P. geniculatus lead to the conclusion that this species is a K strategist.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Panstrongylus
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Limite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
Mem Inst Oswaldo Cruz
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Venezuela
País de publicação:
Brasil