Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin
This study examines the desiccation tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> eggs, two major arbovirus vectors, in a subtropical region of Argentina to understand their survival under varying relative humidity (RH) conditions (35%, 68%, and 82%). Laborato...
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MDPI AG
2025-04-01
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| Series: | Tropical Medicine and Infectious Disease |
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| Online Access: | https://www.mdpi.com/2414-6366/10/4/116 |
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| author | Mía E. Martín Elizabet L. Estallo Luis G. Estrada Carolina Matiz Enriquez Marina Stein |
| author_facet | Mía E. Martín Elizabet L. Estallo Luis G. Estrada Carolina Matiz Enriquez Marina Stein |
| author_sort | Mía E. Martín |
| collection | DOAJ |
| description | This study examines the desiccation tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> eggs, two major arbovirus vectors, in a subtropical region of Argentina to understand their survival under varying relative humidity (RH) conditions (35%, 68%, and 82%). Laboratory experiments revealed that <i>Ae. aegypti</i> eggs exhibited significantly higher survival rates across all RH levels and exposure times compared to <i>Ae. albopictus</i>. After 1 month, <i>Ae. aegypti</i> eggs maintained 88% survival at 35% RH, while <i>Ae. albopictus</i> survival dropped to 38%. This disparity was more pronounced at low RH, where <i>Ae. albopictus</i> eggs experienced a rapid decline in survival over time. The results highlight the importance of RH as a key factor influencing the persistence of both species in the environment. The coexistence of <i>Ae. aegypti</i> and <i>Ae. albopictus</i> in Puerto Iguazú suggests that microhabitats with distinct humidity conditions may favor one species over the other. These findings provide crucial insights for predicting mosquito population dynamics under changing climate conditions and developing more effective vector control strategies to reduce arbovirus transmission in subtropical regions. |
| format | Article |
| id | doaj-art-d41bda0cdc604396a965a1275f6563fb |
| institution | DOAJ |
| issn | 2414-6366 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
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| series | Tropical Medicine and Infectious Disease |
| spelling | doaj-art-d41bda0cdc604396a965a1275f6563fb2025-08-20T03:13:48ZengMDPI AGTropical Medicine and Infectious Disease2414-63662025-04-0110411610.3390/tropicalmed10040116Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina OriginMía E. Martín0Elizabet L. Estallo1Luis G. Estrada2Carolina Matiz Enriquez3Marina Stein4Centro de Investigaciones Entomológicas de Córdoba (CIEC), Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba 5000, ArgentinaCentro de Investigaciones Entomológicas de Córdoba (CIEC), Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba 5000, ArgentinaInstituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Universidad Nacional de Córdoba, Córdoba 5000, ArgentinaInstituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Universidad Nacional de Córdoba, Córdoba 5000, ArgentinaInstituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Universidad Nacional de Córdoba, Córdoba 5000, ArgentinaThis study examines the desiccation tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> eggs, two major arbovirus vectors, in a subtropical region of Argentina to understand their survival under varying relative humidity (RH) conditions (35%, 68%, and 82%). Laboratory experiments revealed that <i>Ae. aegypti</i> eggs exhibited significantly higher survival rates across all RH levels and exposure times compared to <i>Ae. albopictus</i>. After 1 month, <i>Ae. aegypti</i> eggs maintained 88% survival at 35% RH, while <i>Ae. albopictus</i> survival dropped to 38%. This disparity was more pronounced at low RH, where <i>Ae. albopictus</i> eggs experienced a rapid decline in survival over time. The results highlight the importance of RH as a key factor influencing the persistence of both species in the environment. The coexistence of <i>Ae. aegypti</i> and <i>Ae. albopictus</i> in Puerto Iguazú suggests that microhabitats with distinct humidity conditions may favor one species over the other. These findings provide crucial insights for predicting mosquito population dynamics under changing climate conditions and developing more effective vector control strategies to reduce arbovirus transmission in subtropical regions.https://www.mdpi.com/2414-6366/10/4/116vector-borne diseasesegg survival<i>Aedes</i> mosquitosubtropical climateArgentina |
| spellingShingle | Mía E. Martín Elizabet L. Estallo Luis G. Estrada Carolina Matiz Enriquez Marina Stein Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin Tropical Medicine and Infectious Disease vector-borne diseases egg survival <i>Aedes</i> mosquito subtropical climate Argentina |
| title | Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin |
| title_full | Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin |
| title_fullStr | Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin |
| title_full_unstemmed | Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin |
| title_short | Desiccation Tolerance of <i>Aedes aegypti</i> and <i>Aedes albopictus</i> Eggs of Northeastern Argentina Origin |
| title_sort | desiccation tolerance of i aedes aegypti i and i aedes albopictus i eggs of northeastern argentina origin |
| topic | vector-borne diseases egg survival <i>Aedes</i> mosquito subtropical climate Argentina |
| url | https://www.mdpi.com/2414-6366/10/4/116 |
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