Population analysis of white grubs (Coleoptera: Melolonthidae) throughout the Brazilian Pampa biome
| Autor: | Clérison Régis Perini, Ivair Valmorbida, Mariana Alejandra Cherman, J.V.C. Guedes, Lucas de Arruda Cavallin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Biome Population 010607 zoology 01 natural sciences Population density Cultivated areas Grassland Crop Abundance (ecology) lcsh:Zoology Plectris lcsh:QL1-991 education education.field_of_study geography geography.geographical_feature_category biology Ecology biology.organism_classification 010602 entomology QL1-991 Insect Science Grasslands PEST analysis Zoology Cyclocephala Diloboderus abderus |
| Zdroj: | Revista Brasileira de Entomologia v.62 n.4 2018 Revista brasileira de entomologia Sociedade Brasileira De Entomologia (SBE) instacron:SBE Revista Brasileira de Entomologia, Vol 62, Iss 4, Pp 275-282 (2018) Revista Brasileira de Entomologia, Volume: 62, Issue: 4, Pages: 275-282, Published: DEC 2018 |
| Popis: | The replacement of natural grassland by cultivated areas might favor the increase in abundance of some root-feeding species such as the white grubs, which may become a constraint for field crop production. This research aimed to assay the population density and geographical distribution of white grubs pest and other species in natural grassland and cultivated areas throughout the Brazilian Pampa biome. White grubs were sampled in 18 locations in both landscape use types and identified. Population density (number of larvae m−2) was calculated for each recorded species and sorted within two groups (pest species and other species), compared between natural grasslands and cultivated areas, as well as among locations. A dendrogram to evaluate species similarity among locations was built based on combined data obtained from both landscape use types throughout the region. In total, 31 species were found in the Brazilian Pampa, and four of them are considered as crop pests: Diloboderus abderus (Sturm, 1826), Euetheola humilis (Burmeister, 1847), Lyogenys fusca (Blanchard, 1830), and Phyllophaga triticophaga Morón & Salvadori, 1998. The average population density of pest species in cultivated areas was less than five larvae m−2, at most of locations. Some species had a wide geographical distribution (e.g. D. abderus and Cyclocephala modesta Burmeister), while other melolontids occurred at only one location. The knowledge of which white grub species are present in a field and its population densities assist farmers to take proper management decisions. Keywords: Population density, Diloboderus abderus, Plectris, Grasslands, Cultivated areas |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|