Myrmecofauna in eucalyptus plantations in the Mário Xavier National Forest, Rio de Janeiro State, Brazil

Azevedo, Ana Paula Neves de; Almeida, Fábio Souto

doi:10.1590/2179-8087-FLORAM-2024-0019

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ORIGINAL ARTICLE, Conservation of Nature • Floresta Ambient. 32 (3) • 2025 • https://doi.org/10.1590/2179-8087-FLORAM-2024-0019 linkcopy

Myrmecofauna in eucalyptus plantations in the Mário Xavier National Forest, Rio de Janeiro State, Brazil

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Abstract

This study aimed to analyze the taxonomic and functional diversity of the ant fauna in eucalyptus plantations (Corymbia citriodora; Eucalyptus urophylla; and E. saligna) in the Mário Xavier National Forest, state of Rio de Janeiro, Brazil. The E. saligna plantation was adjacent to an urban area, while the others were at least 1 km away. A total of 36 ant species from 14 genera were collected. The largest number of species was found in the C. citriodora plantation (20), followed by E. urophylla (18) and E. saligna (9) plantations. Species composition varied significantly among the areas. Greater numbers of guilds were found in the C. citriodora and E. urophylla plantations (6) compared to the E. saligna plantation (4). These results indicate that environmental attributes and proximity to urban areas can affect the richness and composition of ant species in eucalyptus plantations, consequently influencing the functional diversity.

Keywords:
afforestation and reforestation; conservation; forest entomology

Subfamilies/ Species	Corymbia citriodora	Eucalyptus urophylla	Eucalyptus saligna	Guild
Ectatomminae
Ectatomma sp.1	-	2	-	SLD
Ectatomma permagnum Forel, 1908	6	2	-	SLD
Ectatomma edentatum Roger, 1863	-	1	-	SLD
Ectatomma brunneum Smith, 1858	-	1	-	SLD
Formicinae
Brachymyrmex sp.1	3	-	-	SLO
Brachymyrmex sp.2	1	-	-	SLO
Camponotus melanoticus Emery, 1894	4	4	-	SLO
Camponotus sp.2	1	-	-	SLO
Camponotus crassus Mayr, 1862	1	-	_	SLO
Camponotus rufipes (Fabricius, 1775)	1	-	-	SLO
Myrmicinae
Atta sexdens (Linnaeus, 1758)	4	-	4	LC
Crematogaster sp.1	-	1	-	AO
Cyphomyrmex sp.1	1	-	-	FG
Pheidole sp.1	4	7	-	LOS
Pheidole sp.2	2	1	-	LOS
Pheidole sp.3	-	3	-	LOS
Pheidole sp.4	2	1	-	LOS
Pheidole sp.5	1	-	-	LOS
Pheidole sp.6	-	1	-	LOS
Pheidole sp.7	-	1	-	LOS
Pheidole sp.8	-	-	6	LOS
Pheidole sp.9	-	1	-	LOS
Sericomyrmex sp.1	-	2	1	FG
Sericomyrmex sp.2	-	-	1	FG
Solenopsis sp.1	2	3	-	LOS
Solenopsis sp.2	1	-	2	LOS
Solenopsis sp.3	1	-	-	LOS
Solenopsis sp.4	-	-	1	LOS
Solenopsis sp.5	-	-	1	LOS
Solenopsis sp.6	-	-	1	LOS
Strumigenys sp.1	-	2	-	LEP
Wasmannia auropunctata (Roger, 1863)	6	2		SLO
Wasmannia sp.1	1	1	-	SLO
Ponerinae
Hypoponera sp.1	1	-	-	LGP
Neoponera sp.1	1	-	-	LGP
Odontomachus meinerti Forel, 1905	-	-	1	SLD

Guilds	Corymbia citriodora		Eucalyptus urophylla		Eucalyptus saligna		Total
Guilds	R	F(%)	R	F(%)	R	F(%)	R	F(%)
Arboreal omnivorous	-	-	1	5.56	-	-	1	2.78
Leafcutters	1	5	-	-	1	11.1	1	2.78
Fungus-growers	1	5	1	5.56	2	22.2	3	8.33
Soil or litter dominants	1	5	4	22.2	1	11.1	5	13.9
Soil or litter dominant true omnivorous	8	40	3	16.7	-	-	8	22.2
Litter omnivores and scavengers	7	35	8	44.4	5	55.6	15	41.7
Litter generalist predators	2	10	-	-	-	-	2	5.56
Litter specialist predators	-	-	1	5.56	-	-	1	2.78

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