Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina
Aedes (Ochlerotatus) albifasciatus (Macquart) has the capacity to proliferate in different kinds of climates within its distribution range in South America. With the aim of studying local thermal adaptations of eggs, we exposed egg stocks from two climatically different localities: temperate humid p...
Guardado en:
| Autores principales: | , |
|---|---|
| Publicado: |
2013
|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v38_n2_p339_Garzon http://hdl.handle.net/20.500.12110/paper_10811710_v38_n2_p339_Garzon |
| Aporte de: |
| id |
paper:paper_10811710_v38_n2_p339_Garzon |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_10811710_v38_n2_p339_Garzon2023-06-08T16:05:43Z Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina Garzon, Maximiliano Javier Schweigmann, Nicolás Joaquin Egg hatching Embryonic survival Mosquitoes Thermal adaptation Winter temperature Aedes animal Argentina article egg hatchability embryonic survival freezing mosquito oocyte physiology temperature temperature acclimatization winter temperature egg hatching embryonic survival Mosquitoes thermal adaptation winter temperature Aedes Animals Argentina Freezing Ovum Temperature Aedes (Ochlerotatus) albifasciatus (Macquart) has the capacity to proliferate in different kinds of climates within its distribution range in South America. With the aim of studying local thermal adaptations of eggs, we exposed egg stocks from two climatically different localities: temperate humid pampa (Buenos Aires) and cold arid Patagonian (Sarmiento), to freezing conditions and then evaluated the effect on some features at this level. First, we thermally described the substrate where this species lays its eggs in the arid region. A typical thermal condition during winter was 10 h at -12° C. Second, we evaluated the effect of freezing on primary hatching (vs total hatching) and embryo survival. We also compared the proportion of embryonated eggs from both populations. The proportions of embryonated eggs were not different between localities, with averages of 78% and 83% in Sarmiento and Buenos Aires, respectively. Survival was equally successful after freezing in the two localities with an average range between 94-99%. Whether or not the eggs from Buenos Aires and Sarmiento were under freezing conditions, hatching was more than 98% after the first flooding. The results suggest that eggs of Ae. albifasciatus from Sarmiento and Buenos Aires have the same ability to survive at extreme temperatures (<0° C), showing a regional thermal adaptation rather than a local one. © 2013 The Society for Vector Ecology. Fil:Garzón, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Schweigmann, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v38_n2_p339_Garzon http://hdl.handle.net/20.500.12110/paper_10811710_v38_n2_p339_Garzon |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Egg hatching Embryonic survival Mosquitoes Thermal adaptation Winter temperature Aedes animal Argentina article egg hatchability embryonic survival freezing mosquito oocyte physiology temperature temperature acclimatization winter temperature egg hatching embryonic survival Mosquitoes thermal adaptation winter temperature Aedes Animals Argentina Freezing Ovum Temperature |
| spellingShingle |
Egg hatching Embryonic survival Mosquitoes Thermal adaptation Winter temperature Aedes animal Argentina article egg hatchability embryonic survival freezing mosquito oocyte physiology temperature temperature acclimatization winter temperature egg hatching embryonic survival Mosquitoes thermal adaptation winter temperature Aedes Animals Argentina Freezing Ovum Temperature Garzon, Maximiliano Javier Schweigmann, Nicolás Joaquin Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| topic_facet |
Egg hatching Embryonic survival Mosquitoes Thermal adaptation Winter temperature Aedes animal Argentina article egg hatchability embryonic survival freezing mosquito oocyte physiology temperature temperature acclimatization winter temperature egg hatching embryonic survival Mosquitoes thermal adaptation winter temperature Aedes Animals Argentina Freezing Ovum Temperature |
| description |
Aedes (Ochlerotatus) albifasciatus (Macquart) has the capacity to proliferate in different kinds of climates within its distribution range in South America. With the aim of studying local thermal adaptations of eggs, we exposed egg stocks from two climatically different localities: temperate humid pampa (Buenos Aires) and cold arid Patagonian (Sarmiento), to freezing conditions and then evaluated the effect on some features at this level. First, we thermally described the substrate where this species lays its eggs in the arid region. A typical thermal condition during winter was 10 h at -12° C. Second, we evaluated the effect of freezing on primary hatching (vs total hatching) and embryo survival. We also compared the proportion of embryonated eggs from both populations. The proportions of embryonated eggs were not different between localities, with averages of 78% and 83% in Sarmiento and Buenos Aires, respectively. Survival was equally successful after freezing in the two localities with an average range between 94-99%. Whether or not the eggs from Buenos Aires and Sarmiento were under freezing conditions, hatching was more than 98% after the first flooding. The results suggest that eggs of Ae. albifasciatus from Sarmiento and Buenos Aires have the same ability to survive at extreme temperatures (<0° C), showing a regional thermal adaptation rather than a local one. © 2013 The Society for Vector Ecology. |
| author |
Garzon, Maximiliano Javier Schweigmann, Nicolás Joaquin |
| author_facet |
Garzon, Maximiliano Javier Schweigmann, Nicolás Joaquin |
| author_sort |
Garzon, Maximiliano Javier |
| title |
Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| title_short |
Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| title_full |
Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| title_fullStr |
Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| title_full_unstemmed |
Resistance to freezing temperatures in Aedes (Ochlerotatus) albifasciatus (Macquart) eggs (Diptera: Culicidae) from two different climatic regions of Argentina |
| title_sort |
resistance to freezing temperatures in aedes (ochlerotatus) albifasciatus (macquart) eggs (diptera: culicidae) from two different climatic regions of argentina |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v38_n2_p339_Garzon http://hdl.handle.net/20.500.12110/paper_10811710_v38_n2_p339_Garzon |
| work_keys_str_mv |
AT garzonmaximilianojavier resistancetofreezingtemperaturesinaedesochlerotatusalbifasciatusmacquarteggsdipteraculicidaefromtwodifferentclimaticregionsofargentina AT schweigmannnicolasjoaquin resistancetofreezingtemperaturesinaedesochlerotatusalbifasciatusmacquarteggsdipteraculicidaefromtwodifferentclimaticregionsofargentina |
| _version_ |
1768546220391792640 |