Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba
The objective of this paper was to study blood feeding and autogeny of Culex pipiens pipiens L., 1758 and Culex pipiens quinquefasciatus Say, 1823 from Córdoba province, Argentina. Insects of both subspecies collected in the field were reared in the laboratory. Cohorts of 100 individuals (50 males and 50 females) were fed with either sugar+blood or sugar. The following variables were measured: mean lifetime of adults; blood atad sugar intake weight; number of laid eggs; survival of eggs, larvae and pupae; sex ratio of newly emerged adults. Both subspecies showed autogeny. However, quinquefasciatus had the greater blood intake index and pipiens showed more autogeny. The blood feeding treatment produced the greater mean lifetime, number of laid eggs and egg survival. Although blood feeding assures a high survival of eggs, larvae and pupae, total preadult survival was greater in autogeic individuals. No significant differences between treatments werefound in adult emergence percentage and sex ratio. Subspecies pipiens had the highest survival and the greatest blood-intake weight under both treatments. Culex pipiens quinquefasciatus laid more eggs than pipiens, in the blood feeding treatment.
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Asociación Argentina de Ecología
1994
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rev-ecoaus-article-16912021-02-03T03:15:46Z Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba Sosa, Claudio A. Almirón, Walter R. Manfrini de Brewer, Mireya The objective of this paper was to study blood feeding and autogeny of Culex pipiens pipiens L., 1758 and Culex pipiens quinquefasciatus Say, 1823 from Córdoba province, Argentina. Insects of both subspecies collected in the field were reared in the laboratory. Cohorts of 100 individuals (50 males and 50 females) were fed with either sugar+blood or sugar. The following variables were measured: mean lifetime of adults; blood atad sugar intake weight; number of laid eggs; survival of eggs, larvae and pupae; sex ratio of newly emerged adults. Both subspecies showed autogeny. However, quinquefasciatus had the greater blood intake index and pipiens showed more autogeny. The blood feeding treatment produced the greater mean lifetime, number of laid eggs and egg survival. Although blood feeding assures a high survival of eggs, larvae and pupae, total preadult survival was greater in autogeic individuals. No significant differences between treatments werefound in adult emergence percentage and sex ratio. Subspecies pipiens had the highest survival and the greatest blood-intake weight under both treatments. Culex pipiens quinquefasciatus laid more eggs than pipiens, in the blood feeding treatment. El objetivo del presente trabajo fue estudiar la hematofagia y autogenia en Culex pipiens pipiens L. , 1758 y Cx. p. quinquefasciatus Say, 1823, de la provincia de Córdoba. Diferentes cohortes de adultos de ambas subespecies fueron alimentadas con agua azucarada únicamente, o bien colt agua azucarada y sangre. Las variables medidas fueron: tiempo medio de vida de los adultos, tamaño dc la ingesta sanguínea y de agua azucarada, porcentaje y tamaño de reingestas sanguíneas, número de huevos colocados, supervivencia de huevos, larvas y pupas, proporción de sexos de los adultos emergidos. Ambas subespecies se alimentaron con sangre y ambas manifestaron autogenia. Sin embargo, a quinquefasciatus le correpondió el mayor porcentaje de hematofagia y a pipiens el mayor porcentaje de autogenia. Solamente quinquefasciatus se realimentó con sangre después de la primera ingesta. Los tamaños de reingesta no fueron significativamente distintos pero el número de huevos colocados decreció significativamente. La supervivencia y el tamaño de ingesta fueron mayores en pipiens, independientemente del tipo de alimentación. Quinquefasciatus sólo superó a pipiens en el tiempo medio de vida en ambos tratamientos y en el número de huevos bajo ingesta sanguínea. No hubo diferencias en el porcentaje de adultos emergidos ni en las proporciones de sexos entre los tratamientos. Asociación Argentina de Ecología 1994-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1691 Ecología Austral; Vol. 4 No. 2 (1994); 111-116 Ecología Austral; Vol. 4 Núm. 2 (1994); 111-116 0327-5477 1667-7838 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1691/1022 Derechos de autor 2021 Ecología Austral |
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America del Sur |
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Asociación Argentina de Ecología |
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Digital |
| author |
Sosa, Claudio A. Almirón, Walter R. Manfrini de Brewer, Mireya |
| spellingShingle |
Sosa, Claudio A. Almirón, Walter R. Manfrini de Brewer, Mireya Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| author_facet |
Sosa, Claudio A. Almirón, Walter R. Manfrini de Brewer, Mireya |
| author_sort |
Sosa, Claudio A. |
| title |
Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| title_short |
Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| title_full |
Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| title_fullStr |
Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| title_full_unstemmed |
Hematofagia y autogenia en el Complejo Culex pipiens (Diptera, Culicidae) de Córdoba |
| title_sort |
hematofagia y autogenia en el complejo culex pipiens (diptera, culicidae) de córdoba |
| description |
The objective of this paper was to study blood feeding and autogeny of Culex pipiens pipiens L., 1758 and Culex pipiens quinquefasciatus Say, 1823 from Córdoba province, Argentina. Insects of both subspecies collected in the field were reared in the laboratory. Cohorts of 100 individuals (50 males and 50 females) were fed with either sugar+blood or sugar. The following variables were measured: mean lifetime of adults; blood atad sugar intake weight; number of laid eggs; survival of eggs, larvae and pupae; sex ratio of newly emerged adults. Both subspecies showed autogeny. However, quinquefasciatus had the greater blood intake index and pipiens showed more autogeny. The blood feeding treatment produced the greater mean lifetime, number of laid eggs and egg survival. Although blood feeding assures a high survival of eggs, larvae and pupae, total preadult survival was greater in autogeic individuals. No significant differences between treatments werefound in adult emergence percentage and sex ratio. Subspecies pipiens had the highest survival and the greatest blood-intake weight under both treatments. Culex pipiens quinquefasciatus laid more eggs than pipiens, in the blood feeding treatment. |
| publisher |
Asociación Argentina de Ecología |
| publishDate |
1994 |
| url |
https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1691 |
| work_keys_str_mv |
AT sosaclaudioa hematofagiayautogeniaenelcomplejoculexpipiensdipteraculicidaedecordoba AT almironwalterr hematofagiayautogeniaenelcomplejoculexpipiensdipteraculicidaedecordoba AT manfrinidebrewermireya hematofagiayautogeniaenelcomplejoculexpipiensdipteraculicidaedecordoba |
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1755912520997011456 |