Consulta: subjectFacets:"Leaf-cutting ant"
Registros recuperados: 7
Data/hora: 13/06/2024 07:11:40

Occurrence of Atta cephalotes (L.) (Hymenoptera: Formicidae) in Alagoas, Northeastern Brazil
Provedor de dados: 82
Autores: Corrêa,Michele M.; Bieber,Ana G.D.; Wirth,Rainer; Leal,Inara R.
Atta cephalotes (L.) presents a wide distribution in the Neotropical region. In Brazil, this species is disjunctly distributed in the Amazon region and in the states of Maranhão, Pernambuco and southern Bahia, all of which belong to Northeast Region. Here we report on a survey of Atta colonies in 42 remnants of the Atlantic rainforest in Alagoas and Pernambuco. Our results include new records of A. cephalotes in the state of Alagoas and thereby extend the known distribution area of its southern populations in Northeast Brazil. In addition, the species was strongly associated with well-conserved forest remnants, indicating that it is highly sensitive to disturbance. We suggest that, in the fragmented scenario of the northeastern Atlantic forest, A....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Atlantic Forest; Disjunct distribution; Leaf-cutting ant; New record; Species replacement; Disturbance sensitive taxon.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400023

Distribuição espacial de formigueiros de Acromyrmex crassispinus (Forel)(Hymenoptera: Formicidae) em plantios de Pinus taeda
Provedor de dados: 82
Autores: Nickele,Mariane A; Oliveira,Edilson B de; Reis Filho,Wilson; Iede,Edson T; Ribeiro,Rodrigo D.
The spatial distribution of insects is essential to perform control strategies, to improve sample techniques and to estimate economic losses. We aimed to determine the spatial distribution of nests of Acromyrmex crassispinus (Forel) in Pinus taeda plantations. The experiments were carried out in P. taeda plantations with different ages (treatments: recently-planted, three and six-year old plants). The study took place in Rio Negrinho and in Três Barras, SC. Three plots of one hectare were delimited in each treatment, and plots were divided in 64 sample units. The analysis of the dispersion index [variance/mean relationship (I), index of Morisita (Iδ) and k exponent of negative binomial distribution] showed that the majority of the samplings presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-cutting ant; Pinus pest; Poisson distribution; Reforestation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600003

Geographic distribution of Atta robusta Borgmeier (Hymenoptera: Formicidae)
Provedor de dados: 82
Autores: Teixeira,Marcos C.; Schoereder,José H.; Mayhé-Nunes,Antônio J.
The available information regarding the geographic distribution of Atta robusta Borgmeier is confused and raised the necessity of revision of both its distribution and its endemic status. This paper ascertained the occurrence of A. robusta in restingas of Espírito Santo and Rio de Janeiro states, Brazil, through fieldwork, museum visits and bibliographical revision. No reference mentioned its occurrence out of restinga vegetation, as well as in states located south of Rio de Janeiro. We confirmed that A. robusta is endemic of restinga vegetation and it is restricted to the strip of the denominated Moist Oriental Tertiary Brazilian Coast. Such a distribution is possibly due to geographical and ecological barriers that obstruct its dispersion to other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-cutting ant; Endemic occurence; Coastal ecosystem.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000400026

Occurrence of Atta robusta Borgmeier (Hymenoptera: Formicidae) in the north of Espírito Santo State, Brazil
Provedor de dados: 82
Autores: Teixeira,Marcos C.; Schoereder,José H.; Louzada,Júlio N.C.
Atta robusta Borgmeier has been described as an endemic species from the lowlands of Rio de Janeiro State. However, the scarce studies carried out with species disagree in relation to its geographic distribution. In this note we describe the occurrence of A. robusta in the "restingas" of Guriri Island, north of Espírito Santo State. This occurrence makes clear that A. robusta is not endemic from Rio de Janeiro State, being distributed at least in "restingas" in Rio de Janeiro and Espírito Santo states.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Leaf-cutting ant; Endemism; Coastal ecosystem.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200019

Emigration of a colony of the leaf-cutting ant Acromyrmex heyeri Forel (Hymenoptera, Formicidae)
Provedor de dados: 92
Autores: Nickele,Mariane Aparecida; Pie,Marcio Roberto; Reis Filho,Wilson.
Emigration of a colony of the leaf-cutting ant Acromyrmex heyeri Forel (Hymenoptera, Formicidae). Colony migration is a poorly studied phenomenon in leaf-cutting ants. Here we report on the emigration of a colony of the leaf-cutting ant A. heyeri in Brazil. The colony emigrated to a new location 47.4 m away from the original nest site, possibly because it had undergone considerable stress due to competitive interactions with a colony of Acromyrmex crassispinus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attini; Interspecific aggression; Leaf-cutting ant; Nest relocation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000300020

Caracterização de ninhos de Acromyrmex laticeps nigrosetosus Forel, em povoamento de eucalipto em Paraopeba, MG
Provedor de dados: 44
Autores: Araújo,Márcio S.; Della Lúcia,Terezinha M. C.
The nesting habits of the leaf-cutter ant Acromyrmex laticeps nigrosetosus Forel were studied in areas under Eucalyptus plantations in Minas Gerais State, Brazil. A total of 12 nests were killed with methyl bromide and talcum was injected into entrance holes with a small air pump to mark the underground chambers and channels. In general, these nests presented a single chamber with average dimensions of 0.28 x 0.23 x 0.19 m (length x width x height) located just below the soil surface (0.11 m). Chambers were connected to the soil surface by 2-5 channels which opened at the surface. Externally they were covered by a large amount of dry leaves and in their early stage presented a mound of loose soil. The total nest population was, on average, 12,231...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Attini; Leaf-cutting ant; Acromyrmex; Nidification; Nesting.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000100029

Attractiveness of copperleaf-based bait to leaf-cutting ants
Provedor de dados: 65
Autores: Nagamoto,Nilson Satoru; Barbieri,Rafael Forti; Forti,Luiz Carlos; Cardoso,Sandra Regina de Sousa; Moreira,Sinara Maria; Lopes,Juliane Floriano Santos.
Leaves of copperleaf (Acalypha spp.) are greatly accepted by leaf-cutting ants and therefore used to maintain colonies in the laboratory. In order to determine the attractive potential of granulated bait of Acalypha wilkesiana leaves versus citrus pulp, currently used in commercial baits, an evaluation was performed, by using the leaf-cutting ant Atta sexdens rubropilosa as model. The handmade non-toxic baits contained powder (90% w/w) of either citrus pulp or A. wilkesiana were offered simultaneously in the foraging arena until the total loading of one of them. Results showed that copperleaf baits are less attractive than the citrus ones, which invalidates the viability of the substitution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxic bait; Acalypha wilkesiana; Euphorbiaceae; Formicidae; Leaf-cutting ant.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000600002