Diversidade de insetos antófilos em áreas com reflorestamento de eucalipto, município de Triunfo, Rio Grande do Sul, Brasil

Lopes, L. dos S.; Blochtein, Betina; Ott, Ana Paula

doi:10.1590/s0073-47212007000200008

Cited by 16 publications

(20 citation statements)

References 36 publications

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“…The accumulation curve for insect fauna species collected from the three carcasses did not reach an asymptote, a situation often observed in other similar studies (loPes et al 2007;sousa 2008). The curve suggests the need for a greater sampling effort to observe rare species and to access the real wealth of the taxa in the study area.…”

Section: Discussionsupporting

confidence: 70%

Insect Fauna Associated with Exposed Pig Carcasses in Southern Brazil

Ries

Blochtein

2015

EntomoBrasilis

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Abstract. The knowledge of insect patterns visiting decomposing carcasses and the analysis of parameters related to their presence help determine the post-mortem interval (PMI). This information depends on regional studies because the diversity of insects and the environmental conditions interfere in this process. The aim of the study was to analyze the insect fauna that colonizes carcasses of pigs exposed in different stages of decomposition in the study area. The experiment was conducted in southern Brazil using three domestic pigs (Sus scrofa Linnaeus) that were killed on site. Adult insects associated with carcasses were sampled daily using an insect net, manual collection and pitfall traps. Statistical tests were performed to evaluate the diversity of insects. During the process of decomposition (14 days), Scarabaeidae (25%) and Calliphoridae (23%) species were the most abundant of all of the samples. The diversity of insects is distinguishable when all parameters are analyzed. The Black Putrefaction (IV) stage exhibited the highest diversity according to the applied methods. The succession pattern was established from the species dominance index: Fresh stage -Lucilia eximia Wiedemann (Diptera, Calliphoridae); Chromatic and Bloat -Chrysomya albiceps (Wiedemann) (Diptera, Calliphoridae); Black Putrefaction and Skeletonization -Aphodiinae sp. 1 (Coleoptera, Scarabaeidae).Keywords: Colonization; forensic entomology; postmortem interval; scavenger insects; Sus scrofa. Entomofauna Associada a Carcaças de Suínos Expostas no Sul do BrasilResumo. O conhecimento dos padrões de insetos que visitam carcaças em decomposição e a análise dos parâmetros relacionados a sua presença auxilia na determinação do intervalo post-mortem (IPM). Estas informações dependem de estudos regionais, pois a diversidade de insetos e as condições ambientais interferem neste contexto. O objetivo do estudo foi analisar a entomofauna que coloniza carcaças expostas em diferentes estágios de decomposição na área de estudo. O experimento foi conduzido no sul do Brasil utilizando três porcos domésticos (Sus scrofa Linnaeus), abatidos no local. Insetos adultos associados às carcaças foram amostrados diariamente com rede entomológica, coleta manual e armadilhas pitfall. Foram realizados testes estatísticos para avaliar a diversidade de insetos. Durante o processo de decomposição (14 dias), espécimes de Scarabaeidae (25%) e Calliphoridae (23%) foram os mais abundantes, considerando-se a totalidade das amostras. A diversidade de insetos é distinguível quando são analisados todos os parâmetros. A fase de Putrefação negra (IV) exibiu a maior diversidade de acordo com os métodos aplicados. O padrão de sucessão foi estabelecido a partir do índice de dominância das espécies: fase Fresca -Lucilia eximia Wiedemann (Diptera, Calliphoridae), fase Cromática e de Inchamento -Chrysomya albiceps (Wiedemann) (Diptera, Calliphoridae), e fase de Putrefação Negra e de Esqueletização -Aphodiinae sp. 1 (Coleoptera, Scarabaeidae). Palavras-chave:Colonização; entomologia ...

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Section: Discussionsupporting

confidence: 70%

Insect Fauna Associated with Exposed Pig Carcasses in Southern Brazil

Ries

Blochtein

2015

EntomoBrasilis

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“…Considering anthophilous fauna, the groups of insects recorded in the community were similar to those found in other vegetation types of cerrado (Aoki & Sigrist 2006), grasslands (Freitas & Sazima 2006;Pinheiro et al 2008) or anthropic habitats, such as eucalyptus plantations (Lopes et al 2007). In our study, the richest and most abundant groups, including bees, flies and wasps, were mainly potential pollinators of the sampled plant species.…”

Section: Discussion Compositionsupporting

confidence: 71%

Floral traits as potential indicators of pollination vs. theft

et al. 2016

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Floral visitation does not necessarily mean pollination, as several animals utilize floral resources without transferring pollen. Since pollinators and thieves can affect the reproduction, morphology and diversification of flowering plants, we here investigated if attributes of flowers and flowering of plant species collected in the central Brazilian vereda would predict the pollination (pollen seeking) or theft (pollen/nectar theft) during the visits. It was hypothesized that non specialized flowers would have a higher incidence of thievery, where as specialization, for example, the presence of large and medium flowers with long corolla, making it difficult to access nectar, would lead to increased pollination. As a result, four attributes were mainly associated with illegitimate visits, and in order of importance, they are size (small), quantity of flowers per plant (large), flowering time (< 10 months) and floral type (inconspicuous). The richest and most abundant visitor groups, including bees, flies and wasps, acted mainly as potential pollinators, while cockroaches, butterflies, beetles, ants and hemipterans acted as thieves. However, further studies are required to confirm that this pattern is repeated in other larger and more diverse communities, thus confirming the possible preference for floral thieves. Key words: vereda, bees, anthophilous fauna, flowering, generalist flower. ResumoTipos florais de plantas como potenciais indicadores da ocorrência de polinização vs. pilhagem. A visitação floral não é sinônimo de polinização, vários animais utilizam recursos florais sem transferir pólen. Essas visitas podem ser consideradas pilhagem. Polinizadores e pilhadores podem afetar a diversificação morfológica, taxonômica e reprodutiva das espécies de plantas, e nós investigamos se os atributos florais e de floração das espécies de plantas amostradas em vegetação de vereda nos dariam evidência de visitas de polinização (transporte de pólen) ou de pilhagem (roubo de néctar/pólen). Esperamos que as flores não especializadas tenham uma maior incidência de pilhagem, enquanto flores especializadas, por exemplo com tamanho grande e médio e corolas longas, com néctar menos acessível, tenderiam a ser polinizadas e menos pilhadas. Quatro atributos foram associados principalmente com visitas ilegítimas, tamanho da flor (pequeno), quantidade de flores por planta (muitas flores), tempo de floração (<10 meses) e tipo floral (inconspícuo). Os grupos mais ricos e mais abundantes de visitantes, incluindo abelhas, moscas e vespas, atuaram principalmente como potenciais polinizadores, enquanto baratas, borboletas, besouros, formigas e hemípteros atuaram como pilhadores. No entanto, mais estudos são necessários para confirmar se esse padrão se repete em outras comunidades maiores e mais diversificadas, confirmando assim a eventual preferência dos pilhadores. Palavras-chave: vereda, abelhas, fauna antófila, floração, flor generalista.

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“…plantations in areas of the Brazilian Cerrado contributes to this outcome, because the poorer understory favors the unbalance of insect pest populations Silva et al, 2010). The studied species was reported as a dominant one with wide distribution and abundant, floating populations Lopes et al, 2007;Bernardi et al, 2011). In addition, its adaptation to Eucalyptus spp.…”

Section: Resultsmentioning

confidence: 91%

Sarsina violascens spatial and temporal distributions affected by native vegetation strips in eucalyptus plantations

Zanúncio

Tavares

Ramalho

et al. 2016

Pesq. agropec. bras.

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-The objective of this work was to evaluate spatial and temporal distributions of Sarsina violascens (Lepidoptera: Noctuidae: Lymantriinae) in two Eucalyptus cloeziana plantations, one with native vegetation strips (WNVS) and another without them (ONVS). Adults were collected with light traps, which were installed: inside an area of native vegetation (Cerrado), 100 m from the edge; at the contact zone between the native vegetation area and the E. cloeziana plantation; inside the E. cloeziana plantation, 250 m from the edge; at the central part of the native vegetation strip, around 500 m from the edge (WNVS) or in the contact zone between two E. cloeziana compartments (ONVS); and inside the E. cloeziana plantation, 500 m from the edge. The number of S. violascens adults collected was 240 in the system WNVS and 1,378 in the system ONVS. The lower number of individuals in the system WNVS was probably due to favored biological control provided by higher species richness with the use of native vegetation strips. These strips, intermingled with E. cloeziana plantations, allow a higher proportion of native forest in the landscape and can help to reduce S. violascens infestations.

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Diversidade de insetos antófilos em áreas com reflorestamento de eucalipto, município de Triunfo, Rio Grande do Sul, Brasil

Cited by 16 publications

References 36 publications

Insect Fauna Associated with Exposed Pig Carcasses in Southern Brazil

Insect Fauna Associated with Exposed Pig Carcasses in Southern Brazil

Floral traits as potential indicators of pollination vs. theft

Sarsina violascens spatial and temporal distributions affected by native vegetation strips in eucalyptus plantations

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