Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil

Ants of the genera Atta and Acromyrmex (Myrmicinae: Attini) are in general pests for agricultural and pasture areas. In southwestern Bahia pastures, in Brazil, Acromyrmex landolti Forel occurs at intermediate densities of 260 nests ha<...

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Autores principales:	Milton Rodrigues da Silva Júnior, Maria Aparecida Castellani, Aldenise Alves Moreira, Michele Silva D'Esquivel, Luiz Carlos Forti, Sébastien Lacau
Formato:	article
Lenguaje:	EN
Publicado:	Universidade Estadual de Feira de Santana 2013
Materias:	negative binomial chambers channels depth Zoology QL1-991 Ecology QH540-549.5 Natural history (General) QH1-278.5
Acceso en línea:	https://doaj.org/article/21d05567b71e4e889b2f1cde98be6124
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spelling	oai:doaj.org-article:21d05567b71e4e889b2f1cde98be61242021-12-02T13:56:47ZSpatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil0361-652510.13102/sociobiology.v60i1.20-29https://doaj.org/article/21d05567b71e4e889b2f1cde98be61242013-04-01T00:00:00Zhttp://periodicos.uefs.br/ojs/index.php/sociobiology/article/view/41https://doaj.org/toc/0361-6525Ants of the genera <em>Atta</em> and <em>Acromyrmex</em> (Myrmicinae: Attini) are in general pests for agricultural and pasture areas. In southwestern Bahia pastures, in Brazil, <em>Acromyrmex landolti</em> Forel occurs at intermediate densities of 260 nests ha<sup>-1</sup>. In spite of its economic importance, there is not enough research on the bioecological aspects of such species. This paper aims to study the spatial distribution and the architectural pattern of <em>A. landolti</em> nests, as well as to establish the foundations for the improvement of strategies for controlling the pest. The research was carried out during the period of June 2011 and May 2012, in an area of pastures measuring 2.7 ha, in Itapetinga, in Bahia. Twenty five nests were selected. The external mound area, height of the tower, distance between the tower and the external mound area, as well as the tower diameter were all registered. In order to describe the internal architecture, the same nests were completely excavated and five were molded in cement. The spatial distribution of the nests is of aggregated type. The towers height is 2.1 cm and the average diameter is 1.2 cm. The amount of loose soil is of about 8.0 cm from the tower, with an average area of 472.9±312.5 cm² and average volume of 1.4 L±0.9. The depth of the nests varies between 7.0 and 78.0 cm, with an average of 33.2±21.29 cm. The nests have, in average, 4.4±2.0 chambers, being two nests with just one chamber (8%) and another nest (4%) with 11 chambers.Milton Rodrigues da Silva JúniorMaria Aparecida CastellaniAldenise Alves MoreiraMichele Silva D'EsquivelLuiz Carlos FortiSébastien LacauUniversidade Estadual de Feira de Santanaarticlenegative binomialchamberschannelsdepthZoologyQL1-991EcologyQH540-549.5Natural history (General)QH1-278.5ENSociobiology, Vol 60, Iss 1, Pp 20-29 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	negative binomial chambers channels depth Zoology QL1-991 Ecology QH540-549.5 Natural history (General) QH1-278.5
spellingShingle	negative binomial chambers channels depth Zoology QL1-991 Ecology QH540-549.5 Natural history (General) QH1-278.5 Milton Rodrigues da Silva Júnior Maria Aparecida Castellani Aldenise Alves Moreira Michele Silva D'Esquivel Luiz Carlos Forti Sébastien Lacau Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
description	Ants of the genera <em>Atta</em> and <em>Acromyrmex</em> (Myrmicinae: Attini) are in general pests for agricultural and pasture areas. In southwestern Bahia pastures, in Brazil, <em>Acromyrmex landolti</em> Forel occurs at intermediate densities of 260 nests ha<sup>-1</sup>. In spite of its economic importance, there is not enough research on the bioecological aspects of such species. This paper aims to study the spatial distribution and the architectural pattern of <em>A. landolti</em> nests, as well as to establish the foundations for the improvement of strategies for controlling the pest. The research was carried out during the period of June 2011 and May 2012, in an area of pastures measuring 2.7 ha, in Itapetinga, in Bahia. Twenty five nests were selected. The external mound area, height of the tower, distance between the tower and the external mound area, as well as the tower diameter were all registered. In order to describe the internal architecture, the same nests were completely excavated and five were molded in cement. The spatial distribution of the nests is of aggregated type. The towers height is 2.1 cm and the average diameter is 1.2 cm. The amount of loose soil is of about 8.0 cm from the tower, with an average area of 472.9±312.5 cm² and average volume of 1.4 L±0.9. The depth of the nests varies between 7.0 and 78.0 cm, with an average of 33.2±21.29 cm. The nests have, in average, 4.4±2.0 chambers, being two nests with just one chamber (8%) and another nest (4%) with 11 chambers.
format	article
author	Milton Rodrigues da Silva Júnior Maria Aparecida Castellani Aldenise Alves Moreira Michele Silva D'Esquivel Luiz Carlos Forti Sébastien Lacau
author_facet	Milton Rodrigues da Silva Júnior Maria Aparecida Castellani Aldenise Alves Moreira Michele Silva D'Esquivel Luiz Carlos Forti Sébastien Lacau
author_sort	Milton Rodrigues da Silva Júnior
title	Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
title_short	Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
title_full	Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
title_fullStr	Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
title_full_unstemmed	Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil
title_sort	spatial distribution and architecture of acromyrmex landolti forel (hymenoptera, formicidae) nests in pastures of southwestern bahia, brazil
publisher	Universidade Estadual de Feira de Santana
publishDate	2013
url	https://doaj.org/article/21d05567b71e4e889b2f1cde98be6124
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Spatial Distribution and Architecture of Acromyrmex landolti Forel (Hymenoptera, Formicidae) Nests in Pastures of Southwestern Bahia, Brazil

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