AVALIAÇÃO DOS DANOS CAUSADOS POR FORMIGAS- CORTADEIRAS DO GÊNERO Acromyrmex (Hymenoptera) AOS PLANTIOS DE Pinus taeda NO PLANALTO SUL-CATARINENSE

Content Provider	Semantic Scholar
Author	Buratto, David Alexandre Cardoso, Josiane Teresinha Rolim, Flávio Augusto Filho, Wilson Reis
Copyright Year	2012
Abstract	Resumo As formigas cortadeiras pertencentes ao genero Acromyrmex (Hymenoptera: Formicidae), representam um dos principais problemas do empreendimento florestal no Brasil. Estudos objetivando determinar a ocorrencia e os danos causados por essas formigas em areas de plantio de Pinus na regiao Sul do Brasil sao escassos. Os principais objetivos desta pesquisa foram a determinacao da densidade de ninhos em areas de plantio de Pinus taeda L. com e sem controle quimico e a quantificacao de plantas atacadas. Os estudos foram conduzidos no periodo de janeiro a junho de 2010. O experimento foi instalado em uma fazenda situada no municipio de Anita Garibaldi (SC). Foram demarcadas quatro parcelas de 0,5 ha, sendo que duas receberam um combate pre-plantio com isca formicida e duas nao. Apos o plantio, foram realizados censos quinzenais em cada parcela. Constatou-se a ocorrencia de formigas das especies Acromyrmex crassispinus Forel 1909 e Acromyrmex heyeri Forel 1899. Os danos totais medios por hectare causados as mudas foram no maximo de 3,0% no 35o dia e de 5,38% no 63o dia de avaliacao. Os controles as formigas podem ser diminuidos se forem levados em consideracao epoca do plantio, densidade dos formigueiros e porcentagem de danos causados as mudas. Abstract Assessment of damages caused by leaf-cutting ants of genus Acromyrmex (Hymenoptera: Formicidae) in plantations of Pinus taeda in Santa Catarina southern highlands. Leaf-cutting ants of genus Acromyrmex (Hymenoptera: Formicidae) represent one of the main problems of forest enterprise in Brazil. Researches aiming to determine occurrence and damage caused by such ants in areas of pine plantation in southern Brazil are scarce. The main aims of this research were determining density of nests in Pinus taeda L. planted areas with and without chemical control, and quantification of attacked plants. The research was developed from January to June 2010. The experiment was set up on a farm in the municipality of Anita Garibaldi, SC. Four plots of 0.5 ha were marked out, two received a pre-planting to combat ant bait, and two others not. After planting, censuses had been managed biweekly to each plot. It revealed the occurrence of the following ant species: Acromyrmex crassispinus Forel 1909 and Acromyrmex heyeri Forel 1899. The average total damage caused to seedlings per hectare reached the maximum of 3.0% at the 35th day, and 5.38% at the 63rd day of evaluation. Ants control can be decreased if it is considered planting time, density of nests and seedlings damage percentage. Keywords: Ant; ant bait; chemical control.
Starting Page	683
Ending Page	690
Page Count	8
File Format	PDF HTM / HTML
DOI	10.5380/rf.v42i4.23710
Volume Number	42
Alternate Webpage(s)	https://revistas.ufpr.br/floresta/article/download/23710/19826
Alternate Webpage(s)	https://doi.org/10.5380/rf.v42i4.23710
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article