1,205 research outputs found
Taxonomy of the Simulium perflavum species-group (Diptera: Simuliidae) : with description of a new species from Brazil
The larva, pupa, male, and female of Simulium trombetense n. sp. are described and illustrated. This species was collected in the Brazilian Amazon region in the states of Amapa, Amazonas, Para, and Roraima near the edges ofthe crystalline basement-rock formation ofthe Pre-Cambrian Guiana Shield. Keys for larvae, pupae, males, and females of species in the Simulium perflauum Species-Group are presented, as well as new observations on adult, pupal, and larval characters. Evidence is given to support the species status of S. maroniense Floch and Abonnenc, previously considered synonymous with S. rorotaense Floch and Abonnenc
Simulium (Psaroniocompsa) tergospinosum New Species (Diptera: Simuliidae) in siolii Group from the Southern Part of the State of Amazonas, Brazil
The larva, pupa, male and female of Simulium tergospinosum n. sp. are described and illustrated. The adults of this new species share many characters with species in the subgenus Psaroniocompsa, where it is placed. The larva of this species bears dorsal and lateral triangular tubercles on the abdomen and multiply branched scale-like setae on the body, suggesting that it belongs to the S. siolii species group. S. tergospinosum n.sp. was collected along the Juma River, Apui county, in the southern part of the State of Amazonas, Brazil. The Juma, a black-water river, is a tributary of the Aripuanã River in the Madeira River hydrographic basin, on the southern part of Amazonas. Females were collected biting humans along the water courses during the sampling period (in the dry season)
Association between Hemerodromia sp. (Diptera, Empididae) and Simulium perflavum (Diptera, Simuliidae) in central Amazônia, Brazil
Spectral properties of fractional differentiation operators
We consider fractional differentiation operators in various senses and show
that the strictly accretive property is the common property of fractional
differentiation operators. Also we prove that the sectorial property holds for
differential operators second order with a fractional derivative in the final
term, we explore a location of the spectrum and resolvent sets and show that
the spectrum is discrete. We prove that there exists a two-sided estimate for
eigenvalues of the real component of operators second order with the fractional
derivative in the final term.Comment: The research results were discussed and presented at the 8th
International Conference on Differential and Functional Differential
Equations. Moscow, Russia, August 13-20, 201
Belostomatidae (Heteroptera: Nepomorpha) held in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil: inventory and new distributional records
Belostomatidae is a family of giant water bugs with 52 valid species in Brazil. Here, we list 33 valid species housed in the Invertebrates Collection of the Instituto Nacional de Pesquisas da Amazônia – INPA, Manaus, Brazil. Of the total species examined, 26 had their distributional ranges increased (new records provided in parentheses): Belostoma amazonum Estévez & Polhemus (Mato Grosso and Roraima); B. aurivillianum (Montandon) (Rondônia); B. bosqi De Carlo (Maranhão); B. candidulum Montandon (Mato Grosso do Sul); B. carajaensis Ribeiro & Estévez (Amazonas); B. dallasi De Carlo (Bahia and Pará); B. dentatum (Mayr) (Roraima); B. denticolle Montandon (Roraima); B. dilatatum (Dufour) (Maranhão); B. discretum Montandon (Rio Grande do Sul); B. elongatum Montandon (Paraná); B. estevezae Ribeiro & Alecrim (Amazonas); B. fittkaui De Carlo (Roraima); B. gestroi Montandon (Pará); B. guianae Lauck (Brazil, in Roraima); B. micantulum (Stål) (Maranhão, Rio Grande do Norte, Rondônia and Roraima); B. minusculum (Uhler) (Brazil, in Amazonas, Pará and Rio Grande do Norte); B. parvum Estévez & Polhemus (Amazonas and Roraima); B. plebejum (Stål) (Roraima); B. pygmeum (Dufour) (Pará); B. ribeiroi De Carlo (Mato Grosso do Sul); B. stollii (Amyot & Serville) (Roraima); Horvathinia pelocoroides Montandon (Rondônia); Lethocerus annulipes (Herrich-Schaeffer) (Maranhão, Paraíba and Paraná); L. delpontei De Carlo (Amazonas and Pará) and L. maximus De Carlo (Acre, Amapá, Amazonas and Roraima). In addition, we provide a list of type and non-type specimens of Belostomatidae from INPA’s collection identified to the species level, photographs of these species and relevant taxonomic notes, when available
Belostomatidae (Heteroptera: Nepomorpha) held in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil: inventory and new distributional records
Belostomatidae is a family of giant water bugs with 52 valid species in Brazil. Here, we list 33 valid species housed in the Invertebrates Collection of the Instituto Nacional de Pesquisas da Amazônia – INPA, Manaus, Brazil. Of the total species examined, 26 had their distributional ranges increased (new records provided in parentheses): Belostoma amazonum Estévez & Polhemus (Mato Grosso and Roraima); B. aurivillianum (Montandon) (Rondônia); B. bosqi De Carlo (Maranhão); B. candidulum Montandon (Mato Grosso do Sul); B. carajaensis Ribeiro & Estévez (Amazonas); B. dallasi De Carlo (Bahia and Pará); B. dentatum (Mayr) (Roraima); B. denticolle Montandon (Roraima); B. dilatatum (Dufour) (Maranhão); B. discretum Montandon (Rio Grande do Sul); B. elongatum Montandon (Paraná); B. estevezae Ribeiro & Alecrim (Amazonas); B. fittkaui De Carlo (Roraima); B. gestroi Montandon (Pará); B. guianae Lauck (Brazil, in Roraima); B. micantulum (Stål) (Maranhão, Rio Grande do Norte, Rondônia and Roraima); B. minusculum (Uhler) (Brazil, in Amazonas, Pará and Rio Grande do Norte); B. parvum Estévez & Polhemus (Amazonas and Roraima); B. plebejum (Stål) (Roraima); B. pygmeum (Dufour) (Pará); B. ribeiroi De Carlo (Mato Grosso do Sul); B. stollii (Amyot & Serville) (Roraima); Horvathinia pelocoroides Montandon (Rondônia); Lethocerus annulipes (Herrich-Schaeffer) (Maranhão, Paraíba and Paraná); L. delpontei De Carlo (Amazonas and Pará) and L. maximus De Carlo (Acre, Amapá, Amazonas and Roraima). In addition, we provide a list of type and non-type specimens of Belostomatidae from INPA’s collection identified to the species level, photographs of these species and relevant taxonomic notes, when available
Stegoelmis Hinton, 1939 (Coleoptera: Elmidae: Elminae) in Brazil: two new species and a key to the Brazilian species
[EN]: Two new species of the genus Stegoelmis Hinton, 1939, S. figueiredoensis sp. nov. from Amazonas State, Brazil and S.
shepardi sp. nov. from Roraima State, Brazil and Saint Laurent Du Maroni, French Guiana, are described and illustrated
based on adult specimens. This work also provides a taxonomic key to males of Stegoelmis species known from Brazil.[PT]: Duas novas espécies do gênero Stegoelmis Hinton, 1939, S. figueiredoensis sp. nov. do Estado do Amazonas, Brasil e S.
shepardi sp. nov. do Estado de Roraima, Brasil e de Saint Laurent Du Maroni, Guiana Francesa, são descritas e ilustradas
baseado em espécimes adultos. Este trabalho também traz uma chave taxonômica para os machos das espécies de Stegoelmis
do Brasil.Peer reviewe
OS INTRUMENTOS DA POLITICA NACIONAL DE RECURSOS HÍDRICOS NA REGIÃO NORTE DO BRASIL
NATIONAL POLICY INTRUMENTS FOR WATER RESOURCES IN THE NORTHERN BRAZIL. The Amazon region possesses a wide variety of potential economic uses associated with its natural resources. Water resources by themselves represent a large part of the wealth of the region, not only in economic terms but also in social and environmental terms. The present study discusses the implementation of the National Policy for Water Resources (PNRH) with regard to the implementation of its instruments (the Plan for Water Resources, the classification of the water bodies into use classes, the granting of use rights, the collection of fees for the use of water resources, and an information system for water resources). For these purposes, bibliographical surveys were carried out, the websites of the state and federal governments were consulted, and general searches were conducted on the management of water resources in the states in the northern region of Brazil. As results, we observe that the first steps have been taken with the drafting of state laws related to the PNRH. However, even after14 years have elapsed; the PNRH still does not fulfill its role in managing the water resources of the region. Three of the states in the region are only in the process of developing management plans for hydrographic basins, the great majority of water courses have not yet been classified with respect to their predominant use, the granting of water rights follows a purely bureaucratic process, the information system on the water resources is inefficient, and the collection of fees for the use of the water is far from being viable. Keywords: Management; hydric resources; sustainable use; Amazon.INTRUMIENTOS DE LA POLITICA NACIONAL DE RECURSOS HÍDRICOS EN LA REGIÓN NORTE DE BRASIL. La región norte de Brasil tiene diversos potenciales econômicos asociados a sus recursos naturales, entre ellos, los recursos hídricos, que por si representan gran parte de la riqueza de la región, no solamente em termos econômicos, pero también sociales y ambientales. El presente trabajo discute el cumplimiento de la Política Nacionale de Recursos Hídricos (PNRH), en lo que dice respecto a la ejecución de sus intrumientos (plan de recursos hídricos, marco de los cuerpos d\u27água en clases de uso, la concesión de direchos de uso, colección por el uso de los recursos hídricos, sistema de informaciones sobre recursos hídricos). Para tanto, fueran realizados levantamientos bibliográficos, consulta a sites de governos estaduales y federal y de buscas en general, relativas a la administración de Recursos Hídricos en los Estados de Norte de país. Cómo resultados, observamos que los primeiros pasos fueran dados con las formulaciones de leyes estaduales relacionadas a la PNRH. Todavia, después de 14 años, la PNRH no cumple su papel de administrar los Recursos Hídricos en la región, porque: solamente tres estados de la región estan desarrollando planes de gerenciamiento de bacias, los cursos de água en su gran mayoria no fueran clasificados cuanto a su uso preponderante, a concesión de água sigue un proceso puramente burocrático, el sistema de informaçión sobre los Recursos Hídricos és ineficiente, y la colección del uso de água está lejos de ser factible. Palabras clave: Administración ambientale; recursos hídricos; uso sostenible; Amazónia.A região Norte do Brasil possui diversos potenciais econômicos associados aos seus recursos naturais. Entre os quais os Recursos Hídricos, que por si só representam grande parte da riqueza da região não somente em termos econômicos, mas também sociais e ambientais. O presente estudo discute o cumprimento da Política Nacional de Recursos Hídricos (PNRH), no que tange a implementação de seus instrumentos (plano de Recursos Hídricos, enquadramento dos corpos d\u27água em classes de uso, a outorga de direito de uso, cobrança pelo uso dos Recursos Hídricos, sistema de informações sobre Recursos Hídricos). Para tanto, foram realizados levantamentos bibliográficos, consultas aos sites dos governos estaduais e federal e de buscas em geral, relativas à gestão de Recursos Hídricos nos Estados do Norte do país. Como resultados, observamos que os primeiros passos foram dados com a formulação de leis estaduais relacionadas à PNRH. Porém, passados 14 anos, a PNRH não cumpre o seu papel de gerir os Recursos Hídricos na região, pois somente três Estados da região estão desenvolvendo planos de gerenciamento de bacias, os cursos de água em sua grande maioria não foram classificados quanto a seu uso preponderante, a outorga da água segue um processo puramente burocrático, o sistema de informação sobre os Recursos Hídricos é ineficiente, e a cobrança do uso da água está longe de ser viável
Filamentous Fungi Isolated in Simuliidae (Diptera: Nematocera) larvae in Brazilian Amazônia: Fungos Filamentosos Isolados do trato digestivo de Larvas de Simuliidae (Diptera: Nematocera) da Amazônia brasileira
The objective of this study was to isolate and identify fungal species found on Simuliidae larvae in several municipalities of Brazilian Amazonia, especially in the states of Amazonas and Rondônia. The larvae were collected using forceps, pipettes, placed in sterile containers and stored under refrigeration before being dissected in the laboratory. Approximately 30 Simuliidae species were macerated in Saline Solution (0.9%), seeded on Petri dishes containing solid culture media. The total of 87 fungal lineages were identified from homogenates of seven black-fly species: Simulium perflavum Roubaud, S. trombetense Hamada, Py-Daniel & Adler, S. maroniense Floch & Abonnenc, S. cauchense Floch & Abonnenc, S. daltanhani Hamada & Adler, S. rorotaense Floch & Abonnenc and Lutzimulium simplicicolor (Lutz). Fifteen fungal species were identified as: Cladosporium chlorocephalum (Fresen.) (1.1%), C. herbarum (Pers.) Link (1.1%), Penicilium crustosum Thom (2.2%), P. chrysogenum Thom (3.4%), P. lividum Westling (3.4%), P. citrinum Thom (5.7%), P. citreonigrum Dierckx (1.1%), P. corylophilum Dierckx (1.1%), P. fellutanum Biourge (11.4%), P. oxalicum Currie and Thom (2.2%), Gliocladium virens Corda (5.7%), Aspergillus japonicus Saito (10.3%), Trichoderma harzianum Rifai (10.4%), T. koningii Oud. Aggr. (4.6%), Pestalotiopsis guepini (Desmazieres) Steyaert (12.6%) and Mycelia sterilia (22.9%). Knowledge about these fungi and their relationship with Simuliidae larvae can contribute to their use in biological control of disease vectors and to their use in biotechnological studies, with fungal lineages selected for economic potential
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