The population dynamics of three polyphagous owlet moths (Lepidoptera: Noctuidae) and the influence of meteorological factors and ENSO on them
| Autor: | Magaly Fonseca-Medrano, Fernando Antonio Macena da Silva, Alexandre Specht, Pollyanna Nunes de Otanásio, Juaci Vitória Malaquias |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Integrated pest management
Population Anicla infecta Lepidoptera genitalia Crop Abundance (ecology) Precipitation education education.field_of_study biology Humidity Pragas agrícolas Spodoptera frugiperda Elaphria agrotina Lagarta biology.organism_classification Mariposa Lepidóptero Agronomy QL1-991 Insect Science Noctuidae Agricultural pests ENSO Zoology |
| Zdroj: | Revista Brasileira de Entomologia, Vol 63, Iss 4, Pp 308-315 (2020) Repositório Institucional da UnB Universidade de Brasília (UnB) instacron:UNB Revista Brasileira de Entomologia v.63 n.4 2019 Revista brasileira de entomologia Sociedade Brasileira De Entomologia (SBE) instacron:SBE |
| ISSN: | 1806-9665 |
| Popis: | The owlet moths (Lepidoptera: Noctuidae) Anicla infecta (Ochsenheimer 1816), Elaphria agrotina (Guenee 1852) and Spodoptera frugiperda (J.E. Smith 1797) occur in the entire American continent. These polyphagous moths have a preference for grasses, and have different biological habits. In this study, the populations of these three species were evaluated monthly with light traps in the Brazilian Savannah, ranging a span of four crop seasons (from July, 2013 to June, 2017). The population data were analyzed and correlated with the meteorological variables: maximum temperature, minimum temperature, relative humidity and precipitation. A total of 4719 individuals were collected in the following percentages: A. infecta (n = 459; 9.73%), E. agrotina (n = 1809; 38.33%) and S. frugiperda (n = 2451; (51.94%). The abundance of all species went down from the first crop season (2013/2014) to the third (2015/2016). In the fourth crop season (2016/2017), the populations of A. infecta and E. agrotina stabilized, but the abundance of S. frugiperda experienced further decrease. The numbers of individuals of three species declined when precipitation was much above (crop season 2014/2015) and below (crop season 2015/2016) than expected by the climatological normal. There were significant, but different degrees of correlation, between the meteorological factors and the ONI index (Oceanic Nino Index - indicator for monitoring El Nino-Southern Oscillation or “ENSO”) with respect to monthly population variations. The results are discussed in accordance with principles of the Integrated Pest Management (IPM) in mind, given the continental distribution and agricultural importance of the three owlet moth species studied. |
| Databáze: | OpenAIRE |
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