Primeiro registro do gênero Toxorhynchites Theobald (Diptera, Culicidae) em Mata Atlântica, Viçosa, Minas Gerais

Albeny, Daniel Simões; Rosa, Cassiano Sousa; Ataíde, Lívia Maria Silva; Vilela, Evaldo F.

doi:10.1590/s0034-737x2010000200007

Cited by 5 publications

(4 citation statements)

References 13 publications

(19 reference statements)

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“…leucocelaenus. Species belonging to this genus exhibit predatory behavior in larval stages (Forattini, 2002;Albeny et al, 2010), and have been evaluated for their potential role as biological control agents (Collins and Blackwell, 2000). However, because we did not record Toxorhynchites larval instars during the collections, we were not able to assess any negative effects on mosquito vector populations.…”

Section: Discussionmentioning

confidence: 99%

Mosquito species occurrence in association with landscape composition in green urban areas

2017

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Aedes aegypti prefers densely populated habitats, but has been shown to explore less anthropogenic environments. We investigated composition of the abundance of mosquitoes in forested areas and assessed relationships between species occurrences and different types of land use and land cover at three spatial scales (100m, 500m and 1000m). Mosquitoes were collected from October 2012 to March 2013 using oviposition traps. We collected 4,179 mosquitoes in total including at least 10 species. Aedes albopictus and Limatus durhami were eudominant species, representing 90% of all collected individuals. We found intraspecific differences in response to land use and land cover, and species response patterns were similar at all spatial scales. Ae. albopictus relative abundance was associated with urbanized areas, while Li. durhami, Haemagogus leucocelaenus and Toxorhynchites sp., abundances were associated with native forest. Aedes aegypti were found in five of the eight areas studied, including in an Atlantic forest fragment at a considerable distance from the forest edge (370 m). Aedes aegypti occurrence was not influenced by type of land use or land cover.Keywords: Aedes aegypti, mosquito, oviposition trap, urbanization, landscape. Ocorrência de espécies de mosquitos associada à composição de paisagem em áreas verdes urbanas ResumoAedes aegypti tem como habitat preferencial áreas densamente povoadas, mas que tem se mostrado capaz de explorar ambientes menos antropizados. O objetivo desse trabalho foi investigar a abundância de mosquitos em áreas florestadas e avaliar a relação dos diferentes tipos de uso e cobertura do solo, em três escalas de paisagem (buffer de 100m, 500m e 1000m). Os mosquitos foram coletados entre outubro de 2012 a março de 2013 utilizando armadilhas de oviposição. Foram coletados 4,179 culicídeos, de pelo menos 10 espécies, destas, Aedes albopictus e Limatus durhami foram eudominantes, representando 90% do total de indivíduos coletados. As espécies de culicídeos respondem de maneira diversa aos tipos de uso e cobertura do solo, indicando que as afinidades mais evidentes se mantém nas três escalas avaliadas. A abundância relativa de Ae. albopictus se mostrou relacionada às áreas mais urbanizadas, enquanto a de Li. durhami, Haemagogus leucocelaenus e Toxorhynchites sp., à presença da mata nativa. Aedes aegypti esteve presente em cinco das oito áreas estudadas, incluindo um fragmento de Mata Atlântica a uma distância considerável da borda (370m). A ocorrência de Aedes aegypti nas áreas analisadas não demonstrou ser influenciada pelo tipo de uso e cobertura do solo.Palavras-chave: Aedes aegypti, mosquito, armadilha oviposição, urbanização, paisagem.

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Section: Discussionmentioning

confidence: 99%

Mosquito species occurrence in association with landscape composition in green urban areas

2017

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“…The predatory behavior in these species occurs throughout their larval development (reviewed in Steffan & Evenhuis 1981), while adults feed solely on plants (Trpis 1972, Trimble & Smith 1978, Chowanadisai et al 1984. Larvae of Toxorhynchites are found widely distributed in natural and arti icial containers and are potential natural agents for the control of other Culicidae, such as Aedes albopictus (Skuse) and Aedes aegypti (L.) (Tikasingh & Eustace 1992, Kesavaraju & Juliano 2004, Kesavaraju et al 2007, Albeny et al 2010 and other Diptera (Lounibos & Frank 1987). In spite of Toxorhynchites relevance for biocontrol of mosquito vectors, little is known in terms of their physiology and internal morphology, including the lack of information regarding changes in fat body cells used for nutrient storage during post-embryonic development.…”

Section: Introduc Onmentioning

confidence: 99%

Changes in the fat body during the post-embryonic development of the predator Toxorhynchites theobaldi (Dyar & Knab) (Diptera: Culicidae)

Pascini¹,

Albeny²,

Ramalho-Ortigão³

et al. 2011

Neotrop. entomol.

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Several studies have focused on understanding the biochemistry and morphology of the fat body of the hematophagous mosquito Aedes aegypti (L.) (Diptera: Culicidae). In contrast, few studies, if any, have focused on morphological characters of the fat body in other mosquitoes, especially non-hematophagous taxa such as the culicid Toxorhynchites. Larvae of Toxorhynchites prey upon the larvae of other mosquito species and are used in vector mosquito control. We investigated aspects of the fat body trophocytes, including the morphometric analyses of the lipid droplets, protein granules and nuclei, during Toxorhynchites theobaldi (Dyar & Knab) post-embryonic development. Following the body weight increase from larval stage L2 to L4, the size of lipid droplets within the trophocytes also increase, and are likely the result of lipogenesis. Lipid droplets decrease in size during L4 to the female pupal stage and increase once again during the period from newly-emerged to mature adult females. Protein granules are observed for the first time in female pupae, and their appearance might be related to protein storage during metamorphosis. The size of the nucleus of trophocytes also increases during larval development, followed by a decrease during metamorphosis and an additional increase as adult female ages. In conclusion, the morphology of the fat body of T. theobaldi changes according to the developmental stage. Our study provides for the first time important insights into T. theobaldi fat body development and contributes to understand this species biology.

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“…Toxorhynchites theobaldi presented its peak abundance in the summer, with fewer individuals in the winter. They were found cohabiting with all the other species sampled, an important fact, since the larvae of this genus are predators and feed on other larvae in the breeding site (1). In 75% of positive traps for this species, the number of larvae was low, ranging from one to three.…”

Section: Resultsmentioning

confidence: 94%

Synanthropic Culicidae (Diptera) in three fragments of Atlantic Forest in northern Parana, Brazil

Grossi,

da Silva,

Novaes

et al. 2023

Preprint

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Synanthropic Culicidae were sampled using natural and artificial traps in three forest fragments (Daher Wood, Botanical Garden, and Mata dos Godoy State Park) in Londrina, Paraná, Brazil. To collect Culicidae, six traps were distributed in two separate transects of 70 m each, parallel, with a distance between them of 30 m. Three traps were natural (bamboo) and the other three were artificial (tires). In total, we collected 15,048 specimens distributed in eight species. The peri-urban fragments showed the highest richness. Tires were preferred as breeding sites. The seasons of highest and lowest sampling were summer and winter. The Daher Wood and Botanical Garden showed high similarity, and the Godoy Wood, an intact environment, showed the greatest dominance. The mosquitoes demonstrated varying degrees of synanthropy. Correlations were positive between temperature (0.53) and precipitation (0.40) with Culicid abundance. The Principal Component Analysis indicated that tires were most influenced by temperature, relative humidity, and bamboos by Total Dissolved Solids. Four of the collected species showed potential to be vectors of etiological agents. Abiotic factors directly influence the biology of mosquitoes, which is reflected in higher diversity in warmer and rainy periods. Urban and peri-urban areas showed more synanthropic mosquitoes due to their preference for modified sites. Vector species in these areas are of concern because they can modify disease cycles, and for this reason, it is essential to monitor these areas.

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Primeiro registro do gênero Toxorhynchites Theobald (Diptera, Culicidae) em Mata Atlântica, Viçosa, Minas Gerais

Abstract: First record of genus Toxorhynchites Theobald (Diptera, Culicidae) in Mata Atlântica,

Cited by 5 publications

References 13 publications

Mosquito species occurrence in association with landscape composition in green urban areas

Mosquito species occurrence in association with landscape composition in green urban areas

Changes in the fat body during the post-embryonic development of the predator Toxorhynchites theobaldi (Dyar & Knab) (Diptera: Culicidae)

Synanthropic Culicidae (Diptera) in three fragments of Atlantic Forest in northern Parana, Brazil

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