Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies
Ochlerotatus albifasciatus (Macquart) (Diptera: Culicidae) larvae develop synchronously after rainfall events in ephemeral or temporary pools, where they occasionally attain very high abundance. The aims of the current study were to analyze the response of life history parameters such as daily larva...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n6_p1175_Fischer http://hdl.handle.net/20.500.12110/paper_00222585_v51_n6_p1175_Fischer |
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paper:paper_00222585_v51_n6_p1175_Fischer2023-06-08T14:48:31Z Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies Fischer, Sylvia Cristina Otero, Marcelo Javier Density dependence Floodwater mosquito Habitat drying Larval mortality Population regulation water animal Argentina city ecosystem female growth, development and aging larva male Ochlerotatus population density Animals Argentina Cities Ecosystem Female Larva Male Ochlerotatus Population Density Water Ochlerotatus albifasciatus (Macquart) (Diptera: Culicidae) larvae develop synchronously after rainfall events in ephemeral or temporary pools, where they occasionally attain very high abundance. The aims of the current study were to analyze the response of life history parameters such as daily larval mortality, time to pupation, and adult size of Oc. albifasciatus to increasing larval density under controlled conditions, and to analyze the relationships of daily larval mortality with density and environmental variables (drying rate, temperature, and season) in urban rain pools in Buenos Aires, Argentina. An exponential increase in mortality was observed at high larval densities under controlled conditions. Development times and adult size (wing length) differed between males and females, and were also affected by density. Development times extended for 0.36 d for each order of magnitude of increase in larval density, and wing length decreased 0.0021 mm per additional larva in 600 cm2. Larval density in the field varied from <1 larva per square meter to nearly 1100 larvae per square meter. Daily larval mortality values in the field were variable (0.02-0.91), positively related to the drying rate, and exhibited seasonal differences. No significant relation with larval density or temperature was found in the field. It remains to be established whether the density-independent mortality observed in this study is a generalized pattern of Oc. albifasciatus populations in Buenos Aires Province or a pattern restricted only to urban habitats. © 2014 Entomological Society of America. Fil:Fischer, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Otero, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n6_p1175_Fischer http://hdl.handle.net/20.500.12110/paper_00222585_v51_n6_p1175_Fischer |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Density dependence Floodwater mosquito Habitat drying Larval mortality Population regulation water animal Argentina city ecosystem female growth, development and aging larva male Ochlerotatus population density Animals Argentina Cities Ecosystem Female Larva Male Ochlerotatus Population Density Water |
| spellingShingle |
Density dependence Floodwater mosquito Habitat drying Larval mortality Population regulation water animal Argentina city ecosystem female growth, development and aging larva male Ochlerotatus population density Animals Argentina Cities Ecosystem Female Larva Male Ochlerotatus Population Density Water Fischer, Sylvia Cristina Otero, Marcelo Javier Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| topic_facet |
Density dependence Floodwater mosquito Habitat drying Larval mortality Population regulation water animal Argentina city ecosystem female growth, development and aging larva male Ochlerotatus population density Animals Argentina Cities Ecosystem Female Larva Male Ochlerotatus Population Density Water |
| description |
Ochlerotatus albifasciatus (Macquart) (Diptera: Culicidae) larvae develop synchronously after rainfall events in ephemeral or temporary pools, where they occasionally attain very high abundance. The aims of the current study were to analyze the response of life history parameters such as daily larval mortality, time to pupation, and adult size of Oc. albifasciatus to increasing larval density under controlled conditions, and to analyze the relationships of daily larval mortality with density and environmental variables (drying rate, temperature, and season) in urban rain pools in Buenos Aires, Argentina. An exponential increase in mortality was observed at high larval densities under controlled conditions. Development times and adult size (wing length) differed between males and females, and were also affected by density. Development times extended for 0.36 d for each order of magnitude of increase in larval density, and wing length decreased 0.0021 mm per additional larva in 600 cm2. Larval density in the field varied from <1 larva per square meter to nearly 1100 larvae per square meter. Daily larval mortality values in the field were variable (0.02-0.91), positively related to the drying rate, and exhibited seasonal differences. No significant relation with larval density or temperature was found in the field. It remains to be established whether the density-independent mortality observed in this study is a generalized pattern of Oc. albifasciatus populations in Buenos Aires Province or a pattern restricted only to urban habitats. © 2014 Entomological Society of America. |
| author |
Fischer, Sylvia Cristina Otero, Marcelo Javier |
| author_facet |
Fischer, Sylvia Cristina Otero, Marcelo Javier |
| author_sort |
Fischer, Sylvia Cristina |
| title |
Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| title_short |
Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| title_full |
Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| title_fullStr |
Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| title_full_unstemmed |
Effects of larval density and habitat drying on developmental success of Ochlerotatus albifasciatus (diptera: Culicidae) in urban rain pools: Evidence from field and experimental studies |
| title_sort |
effects of larval density and habitat drying on developmental success of ochlerotatus albifasciatus (diptera: culicidae) in urban rain pools: evidence from field and experimental studies |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n6_p1175_Fischer http://hdl.handle.net/20.500.12110/paper_00222585_v51_n6_p1175_Fischer |
| work_keys_str_mv |
AT fischersylviacristina effectsoflarvaldensityandhabitatdryingondevelopmentalsuccessofochlerotatusalbifasciatusdipteraculicidaeinurbanrainpoolsevidencefromfieldandexperimentalstudies AT oteromarcelojavier effectsoflarvaldensityandhabitatdryingondevelopmentalsuccessofochlerotatusalbifasciatusdipteraculicidaeinurbanrainpoolsevidencefromfieldandexperimentalstudies |
| _version_ |
1768544625792909312 |