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| Santos,Marcelo Guerra; Porto,Gabriela Fraga; Lancellotti,Isabella Rodrigues; Feitosa,Rodrigo M.. |
| Abstract Galls are neoformed plant structures created by cell hyperplasia and hypertrophy induced by a number of organisms, especially insects. After adult insects hatch, senescent galls may remain on the host plant and be occupied by a succession of fauna, the most important and dominant being ants. This study aimed at characterizing the ant fauna successor of stem galls induced by microlepidoptera in Microgramma squamulosa (Kaulf.) de la Sota (Polypodiaceae). Four collections were carried out in the municipality of Nova Friburgo, Rio de Janeiro state, Brazil. The galls were packed in plastic bags and taken to the laboratory. Ants were euthanized and conserved in 70° GL alcohol and later identified. A total of 49 stem galls were collected and analyzed, 15... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ecosystem engineers; Fern-insect interactions; Myrmecophily; Pteridophytes. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000200101 |
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| Brandão,Carlos Roberto F.; Silva,Rogério R.; Feitosa,Rodrigo M.. |
| Large-scale agricultural production in Brazil preferentially occupies plateaus reclaimed from areas originally covered by Cerrado (savanna). Depending on the region, a percentage of the pristine vegetation coverage must be preserved by law, resulting in the creation of fragmented legal Cerrado reserves. The geometry of these relatively small legal reserves creates new habitat edges and ecotones, whose effects on the invertebrate fauna are poorly understood. This study aimed to assess the effects of abrupt edges resulting from soy production on ground-dwelling ant assemblages in the Brazilian Cerrado. The study sites are located within the Amazon region, in the state of Maranhão, northern Brazil, but were covered by Cerrado on a relatively low plateau,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Consevation; Diversity; Legal reserves; Savanna; Soy production. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300012 |
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| Feitosa,Rodrigo M.; Silva,Rogério R. da; Aguiar,Alexandre P.. |
| ABSTRACT In this study we document for the first time flight patterns along a 24 h time range for an ant assemblage in one of the most diverse ecosystems on Earth, the Brazilian Atlantic Forest. Malaise traps were used to analyze the diurnal nuptial flights of a Neotropical ant assemblage during five days. Traps captured 802 individuals, revealing a remarkably high diversity (42 ant species), with samples strongly male biased (1:22). Contrariwise to similar studies, we found only a small proportion of species engaged in nocturnal nuptial flights, with diurnal flights accounting for an impressive 95% of all ant flight activity recorded. For the 18 most common species, three ant groups could be identified regarding flight period: sunrise, sunset, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malaise; Phenology; Reproduction; Summertime; Swarm. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000300241 |
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| Oliveira,Marina V. de; França,Eder Cleyton B. de; Feitosa,Rodrigo M.; Correia,Maria Elizabeth F.; Queiroz,Jarbas M.. |
| RESUMO: As formigas-cortadeiras são consideradas os herbívoros dominantes da Região Neotropical e, portanto, estudos a respeito dos seus múltiplos efeitos sobre outros organismos e processos ecossistêmicos são relevantes. O presente estudo tem como objetivo determinar se ninhos de Atta sexdens (Linnaeus, 1758) podem afetar a estrutura da assembleia de artrópodes do solo em um fragmento de Mata Atlântica. Além disso, a fim de determinar os prováveis mecanismos que explicam a possível modificação na estrutura da fauna de artrópodes, foram testadas duas hipóteses: I) Hipótese da Serrapilheira: A. sexdens reduz a disponibilidade de serrapilheira nas proximidades do ninho; II) Hipótese dos Fatores Abióticos: A. sexdens modifica as condições microclimáticas ao... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formigas-cortadeiras; Engenheiros de ecossistemas; Fauna de solo. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100209 |
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