Population statistics of Triatoma rubrovaria in laboratory
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Revista de Saúde Pública |
Texto Completo: | https://www.revistas.usp.br/rsp/article/view/31855 |
Resumo: | OBJECTIVE: To obtain T. rubrovaria population parameters in order to describe its demographic characteristics. METHODS: The study was carried out in the laboratory of Arthropods, Corrientes, Argentina, from October 2000 to February 2003. Eggs were grouped to form five 100-egg cohorts. Insects were fed on chickens (Gallus domesticus). The cohorts were monitored weekly and kept under controlled temperature (28±3°C) and relative humidity (63±10%). A life table was constructed and other vital statistics were calculated and recorded. RESULTS: Higher mortality was recorded in the first through the fourth nymphal stadium. A constant decrease was seen from the fifth nymphal instar. Life expectancy dropped linearly after overcoming the critical stages. Adults mean survival was 50.2 weeks. The first oviposition was after 40.6 weeks. The fecundity was 859.6 eggs with an average 22.8 eggs per female. The reproductive period was 37.7 weeks. The generation time was 55.3 weeks and the net reproduction rate was 133.7. The intrinsic rate of weekly increment was 0.088. In a stable age distribution the population would be composed of 25.3% eggs, 72.3% nymphs and 2.4% adults. Adults accounted for more than 70% of the total reproductive value. CONCLUSIONS: Triatoma rubrovaria had a long survival as imago, a late first reproduction and a low intrinsic rate of natural increase. |
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Population statistics of Triatoma rubrovaria in laboratory Estadísticos poblacionales de Triatoma rubrovaria en condiciones de laboratorio Triatoma^i1^stablas de vTriatoma^i1^sreproduccTriatoma^i1^screcimiento y desarroTriatoma life^i2^sreproduction taTriatoma life^i2^sgrowth & developm OBJECTIVE: To obtain T. rubrovaria population parameters in order to describe its demographic characteristics. METHODS: The study was carried out in the laboratory of Arthropods, Corrientes, Argentina, from October 2000 to February 2003. Eggs were grouped to form five 100-egg cohorts. Insects were fed on chickens (Gallus domesticus). The cohorts were monitored weekly and kept under controlled temperature (28±3°C) and relative humidity (63±10%). A life table was constructed and other vital statistics were calculated and recorded. RESULTS: Higher mortality was recorded in the first through the fourth nymphal stadium. A constant decrease was seen from the fifth nymphal instar. Life expectancy dropped linearly after overcoming the critical stages. Adults mean survival was 50.2 weeks. The first oviposition was after 40.6 weeks. The fecundity was 859.6 eggs with an average 22.8 eggs per female. The reproductive period was 37.7 weeks. The generation time was 55.3 weeks and the net reproduction rate was 133.7. The intrinsic rate of weekly increment was 0.088. In a stable age distribution the population would be composed of 25.3% eggs, 72.3% nymphs and 2.4% adults. Adults accounted for more than 70% of the total reproductive value. CONCLUSIONS: Triatoma rubrovaria had a long survival as imago, a late first reproduction and a low intrinsic rate of natural increase. OBJETIVO: Obtener parámetros poblacionales de T. rubrovaria a fin de caracterizar demográficamente a esta especie. MÉTODOS: La investigación se realizó entre octubre de 2000 y febrero de 2003 en el laboratorio de artrópodos, Corrientes, Argentina. Se conformaron cinco cohortes de 100 huevos cada una. Los insectos se alimentaron sobre gallina (Gallus domesticus). Las cohortes se controlaron semanalmente. La experiencia se llevó a cabo en condiciones controladas de temperatura (28±3ºC) y humedad relativa del aire (63±10%). Se elaboraron tablas completas de vida y se obtuvieron estadísticos vitales. RESULTADOS: La mayor mortalidad se registró en ninfas de primero a cuarto estadio. A partir del quinto estadio el número de individuos decreció en forma constante. La expectativa de vida, después de superar las edades críticas, disminuyó en forma lineal. La supervivencia media de los adultos fue 50,2 semanas. La primera oviposición ocurrió a las 40,6 semanas. La fecundidad fue 859,6 huevos, con una media de 22,8 huevos. El período reproductivo fue de 37,7 semanas. El tiempo generacional fue de 55,3 semanas y la tasa neta de reproducción 133,7. La tasa intrínseca de incremento natural resultó 0,088. En una distribución estable de edades 25,3% correspondería al estado de huevo, 72,3% al estado ninfal y 2,4% al estado adulto. Los adultos contribuyeron con más del 70% al valor reproductivo total. CONCLUSIONES: Triatoma rubrovaria se caracterizó por una supervivencia prolongada como imago, una edad de la primera reproducción tardía y una tasa intrínseca de incremento natural baja. Universidade de São Paulo. Faculdade de Saúde Pública2005-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rsp/article/view/3185510.1590/S0034-89102005000200011Revista de Saúde Pública; Vol. 39 No. 2 (2005); 211-216 Revista de Saúde Pública; Vol. 39 Núm. 2 (2005); 211-216 Revista de Saúde Pública; v. 39 n. 2 (2005); 211-216 1518-87870034-8910reponame:Revista de Saúde Públicainstname:Universidade de São Paulo (USP)instacron:USPspahttps://www.revistas.usp.br/rsp/article/view/31855/33811Copyright (c) 2017 Revista de Saúde Públicainfo:eu-repo/semantics/openAccessOscherov, Elena BBar, María EDamborsky, Miryam PMilano, Alicia M F2012-07-08T22:34:38Zoai:revistas.usp.br:article/31855Revistahttps://www.revistas.usp.br/rsp/indexONGhttps://www.revistas.usp.br/rsp/oairevsp@org.usp.br||revsp1@usp.br1518-87870034-8910opendoar:2012-07-08T22:34:38Revista de Saúde Pública - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Population statistics of Triatoma rubrovaria in laboratory Estadísticos poblacionales de Triatoma rubrovaria en condiciones de laboratorio |
title |
Population statistics of Triatoma rubrovaria in laboratory |
spellingShingle |
Population statistics of Triatoma rubrovaria in laboratory Oscherov, Elena B Triatoma^i1^stablas de v Triatoma^i1^sreproducc Triatoma^i1^screcimiento y desarro Triatoma life^i2^sreproduction ta Triatoma life^i2^sgrowth & developm |
title_short |
Population statistics of Triatoma rubrovaria in laboratory |
title_full |
Population statistics of Triatoma rubrovaria in laboratory |
title_fullStr |
Population statistics of Triatoma rubrovaria in laboratory |
title_full_unstemmed |
Population statistics of Triatoma rubrovaria in laboratory |
title_sort |
Population statistics of Triatoma rubrovaria in laboratory |
author |
Oscherov, Elena B |
author_facet |
Oscherov, Elena B Bar, María E Damborsky, Miryam P Milano, Alicia M F |
author_role |
author |
author2 |
Bar, María E Damborsky, Miryam P Milano, Alicia M F |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Oscherov, Elena B Bar, María E Damborsky, Miryam P Milano, Alicia M F |
dc.subject.por.fl_str_mv |
Triatoma^i1^stablas de v Triatoma^i1^sreproducc Triatoma^i1^screcimiento y desarro Triatoma life^i2^sreproduction ta Triatoma life^i2^sgrowth & developm |
topic |
Triatoma^i1^stablas de v Triatoma^i1^sreproducc Triatoma^i1^screcimiento y desarro Triatoma life^i2^sreproduction ta Triatoma life^i2^sgrowth & developm |
description |
OBJECTIVE: To obtain T. rubrovaria population parameters in order to describe its demographic characteristics. METHODS: The study was carried out in the laboratory of Arthropods, Corrientes, Argentina, from October 2000 to February 2003. Eggs were grouped to form five 100-egg cohorts. Insects were fed on chickens (Gallus domesticus). The cohorts were monitored weekly and kept under controlled temperature (28±3°C) and relative humidity (63±10%). A life table was constructed and other vital statistics were calculated and recorded. RESULTS: Higher mortality was recorded in the first through the fourth nymphal stadium. A constant decrease was seen from the fifth nymphal instar. Life expectancy dropped linearly after overcoming the critical stages. Adults mean survival was 50.2 weeks. The first oviposition was after 40.6 weeks. The fecundity was 859.6 eggs with an average 22.8 eggs per female. The reproductive period was 37.7 weeks. The generation time was 55.3 weeks and the net reproduction rate was 133.7. The intrinsic rate of weekly increment was 0.088. In a stable age distribution the population would be composed of 25.3% eggs, 72.3% nymphs and 2.4% adults. Adults accounted for more than 70% of the total reproductive value. CONCLUSIONS: Triatoma rubrovaria had a long survival as imago, a late first reproduction and a low intrinsic rate of natural increase. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/rsp/article/view/31855 10.1590/S0034-89102005000200011 |
url |
https://www.revistas.usp.br/rsp/article/view/31855 |
identifier_str_mv |
10.1590/S0034-89102005000200011 |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/rsp/article/view/31855/33811 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Revista de Saúde Pública info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Revista de Saúde Pública |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Saúde Pública |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Saúde Pública |
dc.source.none.fl_str_mv |
Revista de Saúde Pública; Vol. 39 No. 2 (2005); 211-216 Revista de Saúde Pública; Vol. 39 Núm. 2 (2005); 211-216 Revista de Saúde Pública; v. 39 n. 2 (2005); 211-216 1518-8787 0034-8910 reponame:Revista de Saúde Pública instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Revista de Saúde Pública |
collection |
Revista de Saúde Pública |
repository.name.fl_str_mv |
Revista de Saúde Pública - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
revsp@org.usp.br||revsp1@usp.br |
_version_ |
1800221783090003968 |