Poneromorfas sem rainhas – Dinoponera: aspectos ecológico-comportamentais

Araújo, Arrilton

doi:10.7476/9788574554419.0016

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…The fi ssion occurs when a reproductive female leaves the colony, with a group of workers to start a new one (ARAUJO et al, 2015;ITO, 2001). Nests are relatively shallow with an average of 35.1 cm and maximum depth of 65 cm, with a nest density of 20-52 nests per hectare (PEIXOTO et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

First Record of Dinoponera lucida (Hymenoptera: Formicidae), in the Northeast Region of the State of Minas Gerais, Brazil

et al. 2020

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Dinoponera lucida é uma formiga endêmica da Mata Atlântica e desde 2003 está na lista de espécies ameaçadas de extinção. O objetivo dessa pesquisa foi relatar a ocorrência desta formiga em uma área sob ação antrópica no Vale do Jequitinhonha, Minas Gerais, Brasil, fora da sua área de distribuição geográfica conhecida Cinquenta exemplares dessa formiga foram coletadas em uma área próxima a cidade de Ponto dos Volantes e levadas para o laboratório de Controle Biológico de Insetos em Viçosa, Minas Gerais, Brasil, colocadas com álcool a 70% e enviadas ao Instituto Federal do Espírito Santo, Brasil, para identificação. Mapas foram elaborados para ilustrar a distância do ponto de coleta dos exemplares de D. lucida a sua distribuição geográfica e o levantamento da vegetação predominante do município de Ponto dos Volantes. Este é o primeiro relato de D. lucida no nordeste de Minas Gerais, Brasil. A maioria dos indivíduos de D. lucida estava morta ou quebrada, mas as possíveis causas como a destruição de seu habitat ou competição não foram determinadas. A presença desta formiga fora de sua área endêmica inicial indica a possível presença de populações isoladas de D. lucida. Palavras-chave: Adaptação. Formiga. Mata Atlântica. Fragmentação. Insetos. Abstract Dinoponera lucida is an endemic ant to the Atlantic Forest and since 2003 has been on the list of endangered species. The objective of this research was to report the occurrence of this ant in area under anthropic action in the Jequitinhonha Valley, Minas Gerais, Brazil, outside its known geographic distribution area. Fifty ants were collected and taken to the Biological Control Laboratory of Insects in Viçosa, Minas Gerais State, Brazil, placed in70% alcohol and sent to the Federal Institute of Espirito Santo, Brazil to be identified. Maps were elaborated to illustrate the distance from the collection point of the D. lucida specimens to their geographic distribution and the survey of the predominant vegetation of the municipality of Ponto dos Volantes. This is the first report of D. lucida in the north of Minas Gerais State, Brazil.Most individuals of D. lucida were dead or broken, but possible causes such as the destruction of their habitat or competition were not determined. The presence of this ant outside its original endemic area indicates the possible presence of isolated populations of D. lucida. Keyword: Adaptation. Ant. Atlantic Forest. Fragmentation. Insects.

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Section: Introductionmentioning

confidence: 99%

First Record of Dinoponera lucida (Hymenoptera: Formicidae), in the Northeast Region of the State of Minas Gerais, Brazil

et al. 2020

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“…behavior of Dinoponera species (Planqué et al, 2010;Araujo et al, 2015;Curbani et al, 2021). Few ecological studies are available (see Peixoto et al, 2008Peixoto et al, , 2010, but, as a threatened species, nesting and foraging data are crucial for conservation plans.…”

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A Day in the Life of the Giant Ant Dinoponera lucida Emery, 1901 (Hymenoptera, Formicidae): Records of Activities and Intraspecific Interactions

Zocca¹,

Curbani

Ferreira³

et al. 2021

Sociobiology

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Ants present a wide variety of nesting sites, feeding habits, and trophic interactions, but the biology of most species remains unknown. Dinoponera lucida is a poneromorph ant forest-specialist and solitary forager, endemic to the Brazil’s Atlantic Forest. Herein we describe foraging activities, guard and maintenance of the nests, orientation mode, and intraspecific interactions performed by D. lucida. We found three nests distant from each other at least 8.5 m, and the mean reached distance by a worker was 3.8 m. The workers showed colony fidelity and random forage in their territory. We observed two non-agonistic interactions between workers from the same nest, and two agonistic interactions between foraging workers from different nests. The low frequency of agonistic interactions suggests that workers from different nests are unlikely to forage in the same area. Our results expand the knowledge on ants’ natural history through data on foraging activities, guard and maintenance of the nests, orientation mode and intraspecific interactions.

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Litter Surface Temperature: A Driving Factor Affecting Foraging Activity in Dinoponera lucida (Hymenoptera: Formicidae)

Curbani

Zocca

Ferreira³

et al. 2021

Sociobiology

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Dinoponera lucida is a poneromorph ant endemic to the Atlantic Forest of Brazil. The species is classified as endangered in Brazil’s Red List due to its peculiar reproductive biology and high habitat fragmentation. Herein, we characterize D. lucida foraging activity and response to litter surface temperature in a lowland forest remnant in south-eastern Brazil. The mean flow of workers at nest openings was 3.8 ± 0.6 per hour, mean foraging trip was 14.2 ± 2.2 min, and mean foraging distance was 3.8 ± 0.4 m. The time spent per foraging trip and litter surface temperature were positively correlated. Flow of workers at nest openings was higher with mean temperature of litter surface between 21.0 and 27.0 °C. Our results show that D. lucida has a diurnal foraging activity related to habitat temperature. Our data contribute to the knowledge about the ecology of D. lucida and support the hypothesis of optimal food foraging regulated by habitat temperature. In addition, the better understanding of D. lucida activity patterns can assist on conservation planning of this endangered and endemic ant.

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Poneromorfas sem rainhas – Dinoponera: aspectos ecológico-comportamentais

Cited by 3 publications

References 33 publications

First Record of Dinoponera lucida (Hymenoptera: Formicidae), in the Northeast Region of the State of Minas Gerais, Brazil

First Record of Dinoponera lucida (Hymenoptera: Formicidae), in the Northeast Region of the State of Minas Gerais, Brazil

A Day in the Life of the Giant Ant Dinoponera lucida Emery, 1901 (Hymenoptera, Formicidae): Records of Activities and Intraspecific Interactions

Litter Surface Temperature: A Driving Factor Affecting Foraging Activity in Dinoponera lucida (Hymenoptera: Formicidae)

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