Efeito da estrutura de habitat sobre a abundância de parasitóides Pseudacteon Coquillett (Diptera, Phoridae) em ninhos de Solenopsis invicta Buren (Hymenoptera, Formicidae)

Almeida, Fábio Souto; Queiroz, Jarbas Marçal

doi:10.1590/s0085-56262009000300023

Cited by 10 publications

(18 citation statements)

References 26 publications

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“…For example, phorid fly species that attack Solenopsis invicta in agroecosystems are associated with annual open crops or closed perennial crops (Almeida & Queiroz 2009). Habitat structure affects microclimatic conditions and resource availability for the species, which may result in differences in parasitism rates by both dipteran and hymenopteran parasitoids (De La Mora & Philpott 2010;Vasquez-Ordonez et al 2012;Pardee & Philpott 2011).…”

Section: Discussionmentioning

confidence: 99%

Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas

Gomes¹,

Elizalde²,

Queiroz³

2013

Rev. Bras. entomol.

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ABSTRACT. Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas. Hosts of parasitoids in urban areas may suffer from a double threat of habitat destruction by urbanization and parasitism pressure. Moreover, the parasitoids themselves might be at risk if they are specialists. Here, we studied whether Atta robusta (Hymenoptera, Formicidae), which is on the red list of Brazilian threatened species, suffers from higher parasitism pressure in an urban area compared to a natural one. In addition, we determined whether their specialist parasitoids, Eibesfeldtphora breviloba and Myrmosicarius exrobusta (Diptera, Phoridae), are in risk and evaluated whether they are influenced by habitat structure, temperature, humidity, ant traffic, and time of the day. The study was carried out in an urban park and in a natural protected area in the city of Rio de Janeiro. In each site we chose an open area and a closed area (forest) and sampled nine nests in each area. We found that parasitism pressure was similar in urban and natural areas, with the same two parasitoid species present in both areas. The main difference was related to habitat structure, since M. exrobusta was mainly present in open areas while E. breviloba was almost exclusively found in closed areas. Myrmosicarius exrobusta was not present during the hottest midday times, and its abundance was negatively correlated to vapor pressure deficit. These results suggest that green areas can be an important component in efforts to conserve diversity in urban areas. However, the complexity of the habitats in those areas is a fundamental issue in designing urban parks.

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Section: Discussionmentioning

confidence: 99%

Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas

Gomes¹,

Elizalde²,

Queiroz³

2013

Rev. Bras. entomol.

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“…Agricultural areas are habitats with abiotic (e.g., humidity, temperature, and light [Almeida et al, 2007;Asano & Cassill, 2012;Lebrun et al, 2012;Chan & Guénard, 2019]) and biotic (e.g., food [Calcaterra et al, 2008;Chan & Guénard, 2019]) conditions favourable to S. invicta and S. saevissima. In addition, managing soil with machinery (e.g., clearing and ploughing [Holdefer et al, 2017;Atchinson et al, 2018;Chan & Guénard, 2019]) and using herbicides and insecticides (Fernandes et al, 2000) make ant colonies split and more readily disperse (Hays et al, 1982;Oliveira & Campos-Farinha, 2005).…”

Section: Solenopsis Invictamentioning

confidence: 99%

“…The nests of S. invicta and S. saevissima occur in open, sunny places where workers, eggs, larvae and pupae are in direct contact with the soil (Almeida et al, 2007). Each nest consists of agglomerates of soil particles and has a labyrinth of galleries and chambers for food storage, larval rearing and garbage dumps (Fernandes et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The geographic expansion of S. invicta and S. saevissima is often influenced by anthropogenic disturbances (Ascunce et al, 2011; Dejean et al, 2015). For example, the fragmentation of native vegetation to expand agricultural activities (Crist, 2009) creates open, sunny patches that these species like to establish (Almeida et al, 2007; King & Porter, 2007), especially in relation to the edge effect (Murcia, 1995). Furthermore, fragmenting native vegetation can cause a decrease in molecular diversity (Collevatti et al, 2020), as seen in vertebrates (Nöel et al, 2007; Björklund et al, 2010) and ant species, such as Odontomachus rixosus Smith, 1857 and Pheidole annexa Eguchi, 2001 (Bickel et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Impact of native vegetation cover near crops on the occurrence and molecular diversity of fire ants

Nagatani

Ramalho

Alves

et al. 2022

Agri and Forest Entomology

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Solenopsis invicta and Solenopsis saevissima are the most common fire ants in Brazil. Environmental disturbances favour the colony dispersal of both species, particularly those with an anthropogenic origin. However, the frequencies of the species can vary according to the amount of anthropogenic disturbances. Crops near native vegetation fragments is a common landscape in the Brazilian Atlantic Forest. Here, we analyse if there is influence of native vegetation cover on the occurrence of these fire ants and their molecular diversity in crops. Our hypothesis is that these species are antagonistic in terms of occurrence and molecular diversity when compared in the same habitat. We selected crops near fragments with around 50% of native vegetation cover, a percentage informative enough to detect biological responses from insects belonging to a same order. Nests were collected and the species were identified using external morphology, and mtDNA COI sequences. We reject our hypothesis, which suggest that the species colonize the vegetation patches around crops in a similar way. Solenopsis invicta is not limited by vegetation cover, and has a high haplotype diversity when compared to S. saevissima, particularly when the vegetation cover is greater than 50%. Additionally, the vegetation cover seems to not have influence in the total number of haplotypes, but the species have haplotypes that are exclusive to each landscape. Our findings suggest that S. invicta is expanding to native vegetation areas that it has not occupied before, as S. saevissima was dominant there.

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“…Diptera plays an important role in the regulation of insect pest populations (Culik, Martins, Ventura, & Wolff, 2008). In the second group, in the two climatic periods, two families stood out: Drosophilidae, which comprises natural enemies and agricultural pests, and the Phoridae family, which, according to Almeida and Queiroz (2009), act as parasitoids of Solenopsis invicta. This parasitism relationship may explain why the large quantity of Solenopsis spp.…”

Section: Thementioning

confidence: 99%

Edaphic entomofauna associated with coconut crops in the eastern Amazon

Carvalho

Castro

Campos

et al. 2021

Semina: Ciênc. Agrár.

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In the Eastern Amazon is the largest continuous coconut crop area in the world. This region is known for its high precipitation levels and an ecosystem of extensive insect biodiversity. It is important to know the local entomofauna and to know whether there is a balance between the different insect groups. This study aimed to understand the influence of seasonality on the dynamics of edaphic insect families, comparing the environment as a whole and in different commercial coconut crop areas and riparian forests in the Eastern Amazon. Forty pitfall traps were installed in the ground at an average distance of 1 m from the coconut stipe. They were filled with 200 ml of an aqueous solution of liquid neutral soap and 70% alcohol. Traps were installed in eight areas: an area of riparian forest (A1) and seven in commercial coconut crop areas (A2 to A8), in the Amazon dry and rainy season. The similarity between the insects was measured using Euclidean distance. The abundance of families in each collection area used qualitative similarity. For family dominance, quantitative similarity was used. Diversity analyses were performed to justify the similarities of the clusters through the Shannon and Simpson Indices. In total, 252,313 individuals, 118 families, and 9 orders were collected. There were many Formicidae in both climatic periods because it is a social insect and has edaphic habits. The families with the most individuals in the collections were Drosophilidae, Staphylinidae, Bostrichidae, Phoridae, Nitidulidae, Scolytidae, Tenebrionidae, Scarabaeidae, Ceratopogomidae, and Platyogastridae. The riparian forest area (A1) showed the greatest diversity and least dominance. The oldest cultivated areas A2 and A3 (7 years) showed the greatest diversity in the dry season. In the rainy season, the most diversified areas were those with the highest land slope (A6 and A7). The most dominant areas were A5 and A8, where the largest number of Solenopsis spp. were found. This study showed the importance of obtaining basic information about coconut entomofauna and conducting research on insect dynamics in agricultural crops in the Amazon region.

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Efeito da estrutura de habitat sobre a abundância de parasitóides Pseudacteon Coquillett (Diptera, Phoridae) em ninhos de Solenopsis invicta Buren (Hymenoptera, Formicidae)

Cited by 10 publications

References 26 publications

Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas

Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas

Impact of native vegetation cover near crops on the occurrence and molecular diversity of fire ants

Edaphic entomofauna associated with coconut crops in the eastern Amazon

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