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1.
Semina cienc. biol. saude ; 31(1): 3-14, jan.-jun.2010.
Article in Portuguese | LILACS | ID: lil-669815

ABSTRACT

Os simulídeos têm sido objeto de preocupação devido ao seu hábito hematófago, forte antropofilia e alta proliferação, causando desconforto à população, prejuízos em atividades agropecuárias e de turismo rural, além de serem vetores de patógenos. Objetivando conhecer a estrutura de comunidade e diversidade específica desses insetos, foi realizado o levantamento de espécies em três riachos de um parque ecológico em Telêmaco Borba – Paraná. Coletaram-se imaturos em substratos minerais e vegetais no leito dos rios. Efetuaram-se análises físicas e químicas da água. Foram coletados 14397 indivíduos, sendo 14150 larvas e 247 pupas de simulídeos. Identificaram-se as espécies Simullium subnigrum, S. subpallidum, S. rubrithorax, S. incrustatum, S. pertinax, S. inaequale, S. anamariae, S. rubiginosum, S. travassosi, S. riograndense e S. dinelli. Este é o primeiro registro de S. rubiginosum e S. dinelli para o Estado do Paraná. As áreas de menor impacto apresentaram maior diversidade, entretanto áreas impactadas apresentaram maior abundância de borrachudos, representados por apenas uma espécie, S. rubrithorax. Conclui-se que áreas de preservação com ribeirões de águas lóticas e mata ciliar preservada constituem-se como área de refúgio para as espécies de simulídeos. Ambientes antropofizados interferem na dinâmica das espécies, privilegiando uma ou mais, que tornam-se abundantes e dominantes do criadouro. .


Simuliidae have been considered object of concern due to their hemophagia, anthropophilic habits and high proliferation, causing discomfort to the population, damages to agricultural activities and rural tourism, besides being pathogens vectors. With the purpose of understanding the community structure and specific diversity of these insects, a survey of the species was conducted in three streams in an ecological park in Telêmaco Borba – Paraná, Brazil. Immature specimens were collected in mineral and vegetable substrates on the riverbanks. Chemical and physical analyses of the water were carried out. The Simuliidae collection included 14,397 individuals, being 14,150 larvae and 247 pupae. The following species were identified: Simullium subnigrum, S. subpallidum, S. rubrithorax, S. incrustatum, S. pertinax, S. inaequale, S. anamariae, S. rubiginosum, S. travassosi, S. riograndense and S. dinelli.This is the first registry of S. rubiginosum and S. dinelli in the State of Paraná. The lesser-impacted areas presented greater diversity. However, the impacted areas presented an abundance of borrachudos, represented by a single species, S. rubrithorax. It was concluded that preservation areas with lotic waters and riparian forest are considered a refuge area for Simuliidae species. Impact of anthropical activities upon the environment interferes in the dynamics of species, favoring one or more of them, which proliferate and predominate. .


Subject(s)
Diptera , Insect Vectors/classification , Simuliidae/growth & development
2.
Mem. Inst. Oswaldo Cruz ; 107(1): 102-110, Feb. 2012. ilus
Article in English | LILACS | ID: lil-612813

ABSTRACT

The last-instar larva, pupa, male and female of Simulium virescens sp. nov. are described and illustrated. This species has a peculiar larva, which has an elongated head capsule and light-green colour. The first thoracic segment has tubercle on its dorsal region and the third thoracic segment has one pair of tubercles; the first to the fourth abdominal segments have one pair of tubercles on each segment. Until now this new species had only been collected at the type locality, which is on the middle stretch of the Correntina River in the southwestern portion of the state of Bahia, Brazil. Females were voraciously biting humans during the field work. This new species represents the second species of Simulium(Psilopelmia) in Brazil and the first registered outside of the Brazilian Amazon Region.


Subject(s)
Animals , Female , Male , Simuliidae/anatomy & histology , Simuliidae/classification , Brazil , Simuliidae/growth & development
3.
Neotrop. entomol ; 38(3): 360-365, May-June 2009. ilus, graf, mapas, tab
Article in English | LILACS | ID: lil-519355

ABSTRACT

Psaroniocompsa incrustata (Lutz) is an antropophilic species widely distributed in Central and South America. It is the vector of Onchocerca volvulus in a Brazilian focus and has been considered a plague in several areas of this country. The objective of this study was to determine the number of larval instars and to describe the morphological variations and teratologies of a population of P. incrustata from the Pium river, Rio Grande do Norte State. The number of larval instars was determined measuring the head capsule lateral length of 3,164 larvae. The larval instars were determined using the measurement frequency distribution, Student's t-test, the Dyar and Crosby growth rules. Eight larval instars were determined for P. incrustata. A high rate of teratologies (9.6 percent) in the hypostomium and variations in the lateral serrations and the latero-mandibular process were found.


Psaroniocompsa incrustata (Lutz) é uma espécie antropofílica amplamente distribuída na América Central e do Sul. No foco brasileiro de oncocercose é considerada vetora de Onchocerca volvulus, sendo praga em outras regiões do país. Este estudo teve por objetivos determinar o número de estádios larvais e descrever as variações morfológicas e teratologias de uma população de P. incrustata do rio Pium, Rio Grande do Norte. O número de estádios larvais dessa espécie foi determinado medindo o comprimento lateral da cápsula cefálica de 3.164 larvas. Os estádios larvais foram determinados usando distribuição de frequências, teste-t de Student, regra de Dyar e de crescimento de Crosby. Foram identificados oito estádios larvais para P. incrustata. Foi encontrada uma elevada taxa de teratologias (9,6 por cento) no hipostômio, variações nas serrações laterais e no processo látero-mandibular.


Subject(s)
Animals , Simuliidae/anatomy & histology , Simuliidae/growth & development , Brazil , Larva/growth & development
4.
Rev. bras. entomol ; 52(3): 452-454, set. 2008. graf
Article in English | LILACS | ID: lil-496330

ABSTRACT

This study aimed to evaluate the influence of water velocity speed on the local distribution and taxocenosis structure of blackfly larvae. The larvae were collected from two adjacent streams located in the municipality of Angra dos Reis (RJ): Caputera River and one of its tributaries. Riffle litter patches were sampled randomly using a 30 x 30 cm quadrat. Four blackfly species were found: Simulium incrustatum s. l. Lutz, 1910; Simulium (Inaequalium) sp. ; Simulium pertinax s. l. Kollar, 1832 and Simulium subpallidum s. l. Lutz, 1909. Among these species, Simulium pertinax s. l. was clearly associated with higher water current speeds, while Simulium subpallidum s. l. showed association with lower water velocities, and Simulium (Inaequalium) sp. had a relatively constant distribution along the water current gradient.


Este estudo teve como objetivo avaliar, nos criadouros de simulídeos, a influência da velocidade da água sobre a ocorrência de suas larvas e estrutura de suas taxocenoses. Para obtenção da amostragem foram utilizados "quadrats" de madeira distribuídos aleatoriamente no rio Caputera e um de seus tributários. Foram encontradas quatro espécies: Simulium incrustatum sl. Lutz, 1910; Simulium (Inaequalium) sp. ; Simulium pertinax sl. Kollar, 1832 e Simulium subpallidum sl. Lutz 1909. S. (Inaequalium) sp. teve uma distribuição quase constante ao longo do gradiente de correnteza. S. pertinax se mostrou fortemente associada às velocidades mais altas de correnteza, enquanto que S. subpallidum se mostrou associado às velocidades mais baixas.


Subject(s)
Animals , Male , Female , Fresh Water , Simuliidae/anatomy & histology , Simuliidae/classification , Simuliidae/growth & development , Tropical Climate , Brazil , Larva/classification , Pupa/classification
5.
Braz. j. microbiol ; 39(2): 282-285, Apr.-June 2008. tab
Article in English | LILACS | ID: lil-487706

ABSTRACT

The family Simuliidae is the host of simbiontes fungi that inhabit the digestive tracts of arthropods. This paper reports the presence of fungi in Simulium goeldii Cerqueira & Nunes de Mello larvae in Amazonia. We observed that the larvae are a good component of aquatic systems to isolate filamentous fungi.


A família Simuliidae é hospedeira de fungos simbiontes que habitam o trato digestivo de artrópodos. Este estudo reporta a presença de fungos em larvas de Simulium goeldii Cerqueira & Nunes de Mello da Amazônia. Foi observado que as larvas são bons componentes do sistema aquático para isolar fungos filamentosos.


Subject(s)
Animals , Arthropods , Diptera , Environmental Microbiology , Fungi/growth & development , Fungi/isolation & purification , In Vitro Techniques , Simuliidae/growth & development , Simuliidae/isolation & purification , Aquatic Environment , Environment , Methods , Virulence
6.
Neotrop. entomol ; 35(5): 698-704, Sept.-Oct. 2006. ilus
Article in English | LILACS | ID: lil-451233

ABSTRACT

We describe the larval stage of Simulium cuasiexiguum Shelley, Luna Dias, Maia-Herzog & Lowry and Simulium obesum Vulcano and provide new distribution records of four black fly species in the State of São Paulo (Simulium cuasiexiguum, Simulium metallicum s.l. Bellardi, Simulium stellatum Gil Azevedo, Figueró & Maia-Herzog and Simulium oyapockense s.l. Floch & Abonnenc) and three species in the State of Minas Gerais (Simulium duodenicornium Pepinelli, Hamada & Trivinho-Strixino, Simulium obesum and Lutzsimulium pernigrum Lutz).


Neste manuscrito são descritos os estágios larvais de Simulium cuasiexiguum Shelley, Luna Dias, Maia-Herzog & Lowry e Simulium obesum Vulcano. São fornecidos ainda novos registros para quatro espécies de borrachudos para o estado de São Paulo (Simulium cuasiexiguum, Simulium metallicum s.l. Bellardi, Simulium stellatum Gil Azevedo, Figueró & Maia-Herzog e Simulium oyapockense s.l. Floch & Abonnenc) e de três para Minas Gerais (Simulium duodenicornium Pepinelli, Hamada & Trivinho-Strixino, Simulium obesum e Lutzsimulium pernigrum Lutz).


Subject(s)
Animals , Female , Male , Simuliidae/anatomy & histology , Simuliidae/growth & development , Brazil , Larva
7.
Rev. bras. entomol ; 47(4): 653-655, dez. 2003. mapas, tab
Article in English | LILACS | ID: lil-388789

ABSTRACT

Adult and immature Simuliidae were studied in 31 streams of 8 regions of the State of São Paulo. Among the 25 species collected, seven are new records for the State of São Paulo, and one of them, Simulium shewellianum Coscarón, 1985 for Brazil as well.


Subject(s)
Animals , Male , Female , Simuliidae/anatomy & histology , Simuliidae/growth & development , Brazil , Larva , Pupa
8.
9.
Mem. Inst. Oswaldo Cruz ; 84(supl.4): 263-266, 1989. tab, graf
Article in Portuguese | LILACS | ID: lil-623877

ABSTRACT

The distribution of larvae of Simulium goeldii was studies in four streams in upland tropical forest near Manaus, Amazonas, Brazil. In each month 32 points were sampled, each with an area of 30 x 50 cm. The areas of all substrates available were measured at each point. The larvae of S. goeldii were collected and later counted for all substrate types where larvae of this species were found. The available substrates were classified into eight types: dry leaves, green leaves, branches, fruits, detritus, rocks and sand; anly the first four types had larvae present. The Kruskal-Wallis test and analysis of variance indicated that the larvae occupy these substrates differently; the Newman-Keuls identified the following differences in intensity of occupation of the susbstrates: branchs differ from roots, dry leaves and green leaves, and green leaves differ from roots and dry leaves. The highest density of larvae was observed on green leaves. However, because the most abundant substrates in the study area were roots and dry leaves, I suggest that the latter two substrates are the most important ones for the esteblishment of this population of S. goeldii.


Subject(s)
Animals , Simuliidae/growth & development , Simuliidae/pathogenicity , Larva/growth & development
10.
Rev. saúde pública ; 21(4): 331-41, ago. 1987. ilus
Article in Portuguese | LILACS | ID: lil-42955

ABSTRACT

Uma espécie nova, Simulium friedlanderi, do subgênero Simulium (Chirostilbia) Enderlein é descrita, sendo a mesma procedente do norte da Província Hidrogeológica do Centro-Oeste, subprovíncia Alto Paraguai. Simulium (Chirostilbia) laneportoi Vargas, 1941 é revisada, sendo o Simulium (C.) dekeyseri Shelley e Py-Daniel, 1981 colocada em sua sinonimia, e apresentando uma distribuiçäo geográfica tanto no norte da Província Hidrogeológica do Centro-Oeste, subprovíncia Alto Paraguai, como no sudeste da Província Hidrogeológica do Escudo Central. Säo apresentadas chaves diferenciativas para larvas e pupas do grupo pertinax


Subject(s)
Simuliidae/anatomy & histology , Insect Vectors , Simuliidae/growth & development , Brazil
11.
Ouagadoudou; Programme de lutte contre l'onchocercose; .
Monography in French | AIM | ID: biblio-1277918
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