Navegando por Assunto "Taxonomia"

Agora exibindo 1 - 20 de 41

Acesso aberto (Open Access)
Análise taxonômica e molecular de Cestoda nematotaeniidae parasito de intestino delgado de Rhinella marina (Linnaeus, 1758) (Amphibia: Bufonidae) de Belém-Pa
(Universidade Federal do Pará, 2010-07-02) MELO, Francisco Tiago de Vasconcelos; SANTOS, Jeannie Nascimento dos; http://lattes.cnpq.br/4543897195525368
The amphibians of the species Rhinella marina known also as Giant Toad and have cosmopolitan distribution. Posses nocturnes habits, due of variety of feeding they can live in different habitats. Then, they can have many kinds of helminthes parasites. Among the helminthes, the cestodas are the target of study of this work. The members of Nematotaeniidae Family are commonly found in small intestine of repitilian and amphibians. The frequent auto-infestation would justify the high taxes of parasitism in one host. The present study has the objective to identify and to characterize the Cestoda of Rhinella marina from Belém-PA. Twenty hosts were captured in homes of the metropolitan area of Belém-PA and, after necropsy the Cestoda were isolated of intestine, and some specimens were fixed in A.F.A (Glacial Acid Acetic 2%, Formaldehyde 3% and 95 % of Etanol 70º GL), and some worms fixed in 2% Glutaraldehyde in Cacodilate buffer 0,1m P.h 7,4, to process in different techniques. One part of the samples was dehydrated in Etanol Series, and stained with Carmim®, and clarified with Metil Salicilate®. Some specimens were dehydrated and included in Paraffin for acomplishement of longitudinal and tranverse cuts. The worms fixed in Glutaraldehyde were dehydrated and included in Historesin®. Some Cestoda were processed for Scanning Electron Microscopy (SEM). An indentification was accomplished throught drawings in Olympus BX 41 microscope equipped with camera lucida, pictures were taken in a MEDILUX microscope, with image captures system and in MEV JEOL 5310. Histological sections were photographed and 3D reconstruction was made in RECONSTRUCTTM software. The cestoid possess a cylindrical body, filiform and with difficult segmentation, except in the final portion of the strobila. Escolex with four suckers without hooks or apical organ, the pregnant proglotis presents two piriform capsules, funded in the basis and containing one or more eggs. The observations in SEM and light microscopy of the cestoda founded in small intestine of R.marina from Belém-PA, we observed that these Cestoda belong to Nematotaeniidae Family, meanwhile the other morphologic characters observed did not permit us to classify this helminth in any Gender of this Family.
Acesso aberto (Open Access)
Aspleniaceae (Polypodiopsida) do corredor de biodiversidade do norte do Pará, Brasil: um fragmento do Centro de Endemismo Guiana
(2012-06) GÓES NETO, Luiz Armando de Araújo; PIETROBOM, Marcio Roberto
This paper is part of a series that will treat the lycophyte and fern species of the Northern Pará Biodiversity Corridor, and is part of the project "Diagnóstico da Biodiversidade das Unidades de Conservação Estaduais do Mosaico Calha Norte, Estado do Pará". Aspleniaceae are treated in this article, and an identification key, illustrations, geographic distributions, brief descriptions, and taxonomic comments are provided. There are eight species of Aspleniaceae in this region (Asplenium angustum Sw., A. auritum Sw., A. cruegeri Hieron., A. delitescens (Maxon) L.D. Gómez, A. juglandifolium Lam., A. salicifolium L., A. serratum L. and A. stuebelianum Hieron.). The majority of the species are epiphytes that grow on decaying trunks inside the forest. For this family, the registered species correspond to 35% of the species in the Brazilian Amazon, and 40% of species in Pará State.
Acesso aberto (Open Access)
Atributos funcionais como características distintivas de comunidades: o que diferencia anuros do Cerrado e da Caatinga?
(Universidade Federal do Pará, 2019-01) SANTOS, Mayra Caroliny de Oliveira; COSTA, Maria Cristina dos Santos; http://lattes.cnpq.br/1580962389416378
Environmental conditions influence the distribution of organisms and modify functional characteristics. These characteristics may be morphological, behavioral, and physiological with a function. We evaluated the taxonomic and functional diversity of anurans in Cerrado and Caatinga environments in Piauí, Brazil. The anurans were collected in Floriano Municipality in the Cerrado area with cerradão phytophysiognomy and in Alvorada do Gurguéia municipality in the Caatinga with a arboreal caatinga phytophysiognomy. The sampling method was visual encounter and acoustic survey between January and April of 2018. We established six plots at least 500 meters distant between them in each location. The species composition was verified by PCoA and PERMANOVA analysis. For functional diversity, it was used the Rao’s quadratic entropy. The RLQ and the fourth-corner method related the traits to the environmental characteristics. The results showed separation and difference in the composition of the species according to the different areas. Cerrado and Caatinga phytophysiognomies showed differences in functional diversity values of anurans. Cerrado area had relation with the temperature and precipitation and the Caatinga area with the litter. The anuran composition was affected by environmental variables, but the influence on functional traits composition was not significant. Then, the composition was influenced by the environment and the distinctions between phytophysiognomies, such as the rainy season and quantity of microhabitats, were important for the differences in functional traits of anurans species, and consequently on functional diversity
Acesso aberto (Open Access)
Campylorhamphus procurvoides successor (Aves: Dendrocolaptidae) is a junior synonym of Campylorhamphus trochilirostris notabilis
(2009-09) PORTES, Carlos Eduardo Bustamante; ALEIXO, Alexandre Luis Padovan
The taxonomy of the genus Campylorhamphus Bertoni, 1901 is still uncertain, with many inconsistent evolutionary patterns implied by current taxonomy. A re-analysis of the type-series of Campylorhamphus procurvoides successor Todd, 1948 revealed that the holotype is indistinguishable from Campylorhamphus trochilirostris notabilis Zimmer, 1934, while the paratypes belonged either to the latter taxon or to a second already named taxon (Campylorhamphus trochilirostris snethlageae Zimmer, 1934), and a third and yet undescribed taxon allied to Campylorhamphus procurvoides. Here, we present statistical analyses of morphological data supporting the synonymization of C. p. successor into C. t. notabilis, the name with priority. Our findings resolve the long-standing controversy related to the distribution of Campylorhamphus procurvoides populations in the várzea habitats of the lower Amazon River.
Acesso aberto (Open Access)
Caracterização do grupo Edessa rufomarginata e descrição de sete novas espécies (Heteroptera, Pentatomidae, Edessinae)
(2006-09) SILVA, Eduardo José Ely e; FERNANDES, José Antônio Marin; GRAZIA, Jocélia
The Edessa group rufomarginata is proposed to include E. rufomarginata (De Geer, 1773), E. marginalis (Dallas, 1851), E. albomarginata (Stål, 1855), E. abdominalis Erichson, 1848, E. corallipes Erichson, 1848, E. aulacosterna Stål, 1872, E. ovalis Stål, 1872, and E. nigropunctata Berg, 1884. Seven new species are described in this group, six from Brazil and one from Argentina: E. brasiliensis sp. nov., E. castaneolineata sp. nov., E. cerradensis sp. nov., E. chapadensis sp. nov., E. luteovenulata sp. nov., E. rufodorsata sp. nov. (Argentina) and E. virididorsata sp. nov. These species are known from Venezuela, Suriname, Guyana, Brazil, Paraguay and Argentina.
Acesso aberto (Open Access)
Cyatheales (Polypodiopsida) do Corredor de Biodiversidade do Norte do Pará, Brasil
(2014-09) GÓES NETO, Luiz Armando de Araújo; PIETROBOM, Marcio Roberto
This paper is part of a series where the lycophyte and fern species of the Biodiversity Corridor ofnorthern Pará State are presented, produced under the project "Diagnóstico da Biodiversidade das Unidades de ConservaçãoEstaduais do Mosaico Calha Norte, Estado do Pará". In this manuscript the taxonomic treatment of Cyatheales is presented with identification keys, illustrations, distribution, descriptions, and comments to the studied taxa. Two families (Cyatheaceae and Metaxyaceae), three genera (Cnemidaria, Cyathea, and Metaxya), eight species, and one variety are registered. Cyathea is the most representative genus with seven species.
Acesso aberto (Open Access)
Descrição e comparação morfológica da terminália feminina das espécies de Agromyzidae (Diptera: Opomyzoidea)
(Universidade Federal do Pará, 2017-05-10) MONTEIRO, Nilton Juvencio Santiago; ESPOSITO, Maria Cristina; http://lattes.cnpq.br/2112497575917273
Agromyzidae is a family of phytophagous flies with great morphological similarity. The male terminalia is the main structure that helps in the identification of the species. However, the female terminalia has been largely neglected by most of the works until now. In this study, the female terminalia of 27 species in 9 genera of Agromyzidae (Japanagromyza Sasakawa, Melanagromyza Hendel, Calycomyza Hendel, Galiomyza Spencer, Liriomyza Mik, Nemorimyza Frey, Phytoliriomyza Hendel, Phytomyza Fallén, Pseudonapomyza Hendel) have been described which were deposited in the Museu de Zoologia da Universidade Federal do Pará (UFPA) and in the Entomological Collection of the Museu Paraense Emílio Goeldi (MPEG). Female abdomens were cleared in 10% KOH, dissected and the female terminalia were drawn using a microscope with camera lucida. The shape of the ninth abdominal segment, the spermathecae and the number of marginal cerdae were important characteristics to identify each species. The shape and length of the egg guides were useful to identify both subfamilies of Agromyzidae (Agromyzinae and Phytomyzinae). Some considerations about similar characteristics have been based in hypothesis for the phylogenetic relationship among genera of the family Agromyzidae. It is expected that the results of this study will be useful for the identification of female specimens from now on.
Acesso aberto (Open Access)
Descrição e osteologia de uma nova espécie do gênero Leporinus (Characiformes: anostomidae) do rio Xingu, Para, Brasil
(Universidade Federal do Pará, 2022-12-19) CHAVES, Cláudia Sousa; BIRINDELLI, José Luis Olivan; http://lattes.cnpq.br/4475607120379771; https://orcid.org/0000-0001-9646-9636; SOUSA, Leandro Melo de; http://lattes.cnpq.br/6529610233878356; https://orcid.org/0000-0002-0793-9737; https://orcid.org/0000-0001-9646-9636
The fishes of the Anostomidae family are popularly known in Brazil as aracus, piaus and piaparas, being widely distributed in the Neotropical region, with more than half of the 150 known species concentrated in the Amazon. In the Xingu River, 23 species of Anostomidae are known, and the present study seeks to expand knowledge about the diversity of Anostomidae in the Xingu River basin, through the description of a new species, using traditional taxonomy tools and molecular markers, in addition to verify its distribution pattern and conservation status. The analyzed material comes from collections in the upper, middle and lower reaches of the Xingu River, and is deposited in the scientific collections of LIA, INPA, MZUSP, MPEG and MZUEL. A total of 56 individuals were analyzed. Leporinus sp.2 has a body with a longitudinal dark stripe that goes from the anterior portion of the operculum to the caudal peduncle, formed by horizontally elongated macules, dark transverse bars on the dorsum and 3/4 dental formula. It is similar in color pattern to L. britskii, L. guttatus, L. marcgravii, L. microphysus, L. unitaeniatus, L. vanzoi and L. octomaculatus. The new species differs from L. britskii, L. guttatus, L. marcgravii and L. octomaculatus by having 16 rows of scales around the caudal peduncle (vs. 12), from L. unitaeniatus, L. vanzoi by having three teeth on the premaxilla (vs, four). The DNA Barcode data also corroborate this hypothesis, since the new species differs from all analyzed congeners. The closest congeners of the new species are L. uniateiniatus and L. vanzoi, with whom it has a genetic distance of about 3%. Osteological characteristics of the species are described, illustrated and discussed.Osteological characteristics of the species are described, illustrated and discussed.
Acesso aberto (Open Access)
Dez novas espécies de Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini) e três novas combinações
(Universidade Federal do Pará, 2017-02-21) SOUZA, Alexandre Salgado de; RUIZ, Gustavo Rodrigo Sanches; http://lattes.cnpq.br/3135887179267009
Ten new species of Amphidraus Simon, 1900 from Brazil are described: A. belzonte sp. nov. (♂), A. bifidus sp. nov. (♂♀), A. caxiuanan sp. nov. (♂), A. draconicaudatus sp. nov. (♂♀), A. janauri sp. nov. (♂), A. loxodontillus sp. nov. (♂), A. mysticetus sp. nov. (♂♀), A. nigrigenu sp. nov. (♂), A. pulvinus sp. nov. (♂) and A. simplex sp. nov. (♂♀). A new diagnosis is proposed for the genus and three new combinations are established for species presently misplaced in Amphidraus: Nebridia parva Mello-Leitão, 1945 = Titanattus parvus (Mello-Leitão, 1945) new comb., Nebridia manni Bryant, 1943 = Truncattus manni (Bryant, 1943) new comb. and Nebridia mendica Bryant, 1943 = Truncattus mendicus (Bryant, 1943) new comb. Several new records for A. santanae Galiano, 1967 are provided, enabling brief comments on the morphological variations founded.
Acesso aberto (Open Access)
Diversidade de helmintos de Ageneiosus ucayalensis Castelnau 1855 (Pisces siluriformes) da foz do Rio Guamá e Baia do Guajará, Belém, Pará
(Universidade Federal do Pará, 2010-05-10) GIESE, Elane Guerreiro; SANTOS, Jeannie Nascimento dos; http://lattes.cnpq.br/4543897195525368; VALLINOTO, Antonio Carlos Rosário; http://lattes.cnpq.br/3099765198910740
Descriptive taxonomy studies of fish parasites in the Amazon Region are relevant, considering the great biodiversity of known hosts. The aim of this was to analyze parasites found in Ageneiosus ucayalensis, describing new helminthes species, redescribing species and finding new hosts for species of known helminthes, using Light Microscopy, Scanning Electron Microscopy and Molecular Biology. A. ucayalensis, a fresh water siluriform from South America, is poorly studied, despite its importance in the trophic chain of fresh water environment and the great value in the regular diet of Amazonian populations. Those hosts inhabit the base level of Guamá river and Guajará Bay being parasited by helminthes of Phyla Plathyhemintes, Acanthocephala and Nematoda, which are described for the first time. In this study two new species of Nematoda were described, Procamallanus (Spirocamallanus) belenensis and Cucullanus ageneiosus; new host and new occurrence were described for Procamallanus (Spirocamallanus) rarus; moreover, we described larval forms of nematoda of Families Anisakidae (Anisakis sp.), Cystidicolidae (Pseudoproleptus sp.) and Cucullanidae (Cucullanus sp.) parasiting A. ucayalensis. Parasites of phylum Plathyhelmintes, Class Cestoda, represented by metacestodes and adults of family Proteocephalidae were also described, as well as class Monogenea, represented by helminthes of family Dactylogiridae, subfamily Ancyrocephalinae and phylum Acanthocephala by specimens of Neoechinorhynchidae, family (Genus Neoechinorhynchus). We believe that the present study contributes with important data to parasite biodiversity from Amazon Region.
Acesso aberto (Open Access)
Efeitos de atividades de subsistência de ribeirinhos sobre a heterogeneidade ambiental e a diversidade de insetos aquáticos em diferentes níveis espaciais de riachos amazônicos
(Universidade Federal do Pará, 2021-09) COSENZA, Jorge Felipe Abreu; FARIA, Ana Paula Justino de; http://lattes.cnpq.br/6041546003155327; https://orcid.org/0000-0003-2729-5358; SANTOS, Raphael Ligeiro Barroso; http://lattes.cnpq.br/7227882802366966; https://orcid.org/0000-0001-9717-5461
The deleterious effects of large-scale impact activities such as agriculture, intensive ranching, dam construction and mining on Amazonian biodiversity have been constantly studied. On the other hand, the effects of smaller-scale impact activities are neglected. An example is the activities practiced by traditional populations, such as riverside populations, who have lived for generations on the banks of rivers and streams in the Amazon basin. There are still few studies that evaluate the effects of anthropic activities considered to have less impact on the diversity patterns of aquatic insects at different spatial scales using taxonomic and functional approaches concurrently. Thus, we evaluated how subsistence activities practiced by riverside populations affect the taxonomic and functional alpha and beta diversity of aquatic insects of the orders Ephemeroptera, Plecoptera and Trichoptera - (EPT), at different spatial levels (between sampling units within streams and between streams). We tested the hypotheses that (H1) the altered streams have less environmental heterogeneity among themselves and the composition of environmental characteristics different from the control streams; (H2) altered streams have lower alpha taxonomic and functional diversity than control streams; (H3) the taxonomic and functional beta diversity between sampling units and between altered streams is lower than between sampling units and control streams; (H4) the beta diversity observed between sampling units and between altered streams is generated primarily by richness difference, while between sampling units and control streams, the replacement of species/functional groups predominates. We conclude that the disturbance caused by the riverside populations subsistence activities, specially navigation, altered the characteristics of the habitats and, in certain aspects, the EPT assemblages of the streams of the Caxiuanã region. Beta diversity patterns did not change, but there was a loss and increase in abundance of some genera as a result of the changes. Thus, the maintenance of beta diversity is not necessarily a sign of high diversity and ecological integrity, as the increased variation in the composition of these assemblages may be a result of the loss of sensitive species and the increase of more generalist species. The functional approach responded similarly to the taxonomic one in all environments and spatial levels, which suggests that this effect is dependent on the biological group analyzed and on the type and intensity of change in the environment. The activities practiced by the riverside populations altered the local community of aquatic insects in a less impactful way compared to other activities commonly practiced in the Amazon, such as logging, agriculture, palm plantation, grazing and mining. To reduce a possible loss of species in the streams in the region, it is necessary to maintain the natural conditions of the habitats, such as a high density of vegetation cover on the banks, a large number of leaf banks in the riverbed and a high frequency of slow flows.
Acesso aberto (Open Access)
Estudo taxonômico do gênero Cyprideis, Formação Pebas, região de Iquitos, Peru
(Universidade Federal do Pará, 2020-12-16) SOUSA, Fabricia Silva de; RAMOS, Maria Inês Feijó; http://lattes.cnpq.br/4546620118003936; 4546620118003936
The Genus Cyprideis belongs to the Cytherideidae Family and recognized for its ecophenotypic plasticity, influenced by several physical-chemical parameters (eg. Salinity, temperature, hydrochemistry, dissolved oxygen content and energy level) that considerably influence its morphological characteristics. In addition, the various adaptive radiation of the genus is recorded mainly in ancient lake systems, for example, on lake Tanganyika, lake Pannon, PaleoMediterraneo, Caribbean and ―lake Pebas" in the Western Amazon. Previous researches were mainly focused on taxonomic studies that contributed to the recognition of a wide variety of taxa; Cyprideis, however the high intraspecific variability of the genus makes it difficult to recognize some species, since the morphological characteristics between then are very similar, which makes it difficult to recognize the actual number of species that currently occur in the Neogene of Western Amazon. Thus, the present work aims the taxonomic study of the Genus Cyprideis of the Pebas Formation, region of Iquitos (Peru), located between the border west of the Marañon basin and the Iquitos arch. The studied samples come from nine outcrops located on the banks of the Amazon River and the Napo River, which provided recognition of eight genera (Cyprideis, Cypria, Penthesilenula, Heterocypris, Macrocypris, Pelocypris, Perissocytheridea and Skopaeocythere) and 22 species of ostracodes. Among these genera, Cyprideis corresponds to 92.5% of the ostracofauna, with 15 species identified, and three are new. Among these are the first record of Cyprideis anterospinosa, Cyprideis marginuspinosa, Cyprideis retrobispinosa and Cyprideis krsticae for the Pebas Formation, previously recorded only in the Solimões Formation. Additionally, the associations identified allowed to infer a predominantly lacustrine environment, which sazonal variations probably influenced in the salinity rate, without evidence of marine influence; besides inferring the age interval between the Middle Miocene and Late Miocene.
Acesso aberto (Open Access)
Filogenia do gênero Mischocyttarus de Saussurre, baseado em caracteres morfológicos e moleculares, e revisão taxonômica do subgênero Megacanthopus Ducke (Hymnoptera, Vespidae, Polistinae)
(Universidade Federal do Pará, 2019-03) FELIZARDO, Sherlem Patrícia de Seixas; SILVEIRA, Orlando Tobias; http://lattes.cnpq.br/9654506257169791; https://orcid.org/0000-0002-5899-199X
Acesso aberto (Open Access)
Filogenia molecular e taxonomia do grupo Anolis chrysolepis Duméril & Bibron, 1837 (Squamata, Polychrotidae)
(Universidade Federal do Pará, 2010) D’ANGIOLELLA, Annelise Batista; GAMBLE, Tony; ÁVILA-PIRES, Teresa Cristina Sauer de; http://lattes.cnpq.br/1339618330655263
The Amazon forest is the largest continumm tropical forest around the world and several mecanisms have been proposed to explain its high biological diversity. The Refuge Hypothesis is one of the most debated explanations used and is based on the contraction of forested areas during dry periods, restricting populations to forest refugia. Forests expand during wet periods and these climatic and vegetational oscillations during the Pleistocene would be responsible for speciation and distribution patterns seen in Amazonian species. However, recent molecular phylogenetic studies confront this notion by indicating that most divergences among tropical forest vertebrate species predate the Pleistocene period. The Anolis chrysolepis clade, along with Anolis bombiceps, was previously studied and cited as a classic example of Pleistocene speciation, but recent studies showed substantial molecular divergence in the complex indicating that further studies about the subspecies relationships will demonstrate they are distinct species. We used the mithocondrial gene (ND2) to estimate phylogenetic relationships among the Anolis chrysolepis subspecies and the taxa previously hypothetized as related to them. In addition, their morphology and taxonomy status were revisited in order to confirm the congruence among the molecular and morphological datasets, determining if morphologically defined taxa are valid species. Based on both datasets, we elevate the five subspecies of Anolis chrysolepis to species status, diagnosticating each one of them with comments about the main morphological differences between the sister taxon and providing new distribution data.
Acesso aberto (Open Access)
Flora do Ceará, Brasil: polygalaceae
(Universidade Federal do Pará, 2018-06) LIMA, Igor Gonçalves; ALBUQUERQUE, Alex Melo Lins de; DIAS, Ana Cristina Andrade de Aguiar; LOIOLA, Maria Iracema Bezerra
This study aimed carry out the floristic inventory of Polygalaceae species, as part of Flora of Ceará project. The study was based in the analysis of morphological characters of specimens obtained in field or in herborized collections from herbaria EAC, BHCB, HST, HVASF, RB and UFP. The field expeditions were realized between September/2015 and March/2016.. The identifications were based on specialized bibliography, confirmed by analysis of collections-types. In the Ceará State, 20 species and seven genera were registered: Acanthocladus (1) Asemeia (3), Bredemeyera (2), Caamembeca (1), Monnina (1), Polygala (9) and Securidaca (3). The species were registered in distincts vegetation types, but occurs, preferably, in stepic savannah (caatinga) and savannah (cerrado) and 13 (62%) were recorded in five Conservations Units. Monnina insignis and Polygala celosioides are new records for Ceará state.
Acesso aberto (Open Access)
Foraminíferos bentônicos da Formação Pirabas (Oligoceno-Mioceno), Plataforma Bragantina, nordeste do Estado do Pará, Brasil.
(Universidade Federal do Pará, 2024-06-19) BENAVIDES PÉREZ, Mónica Andrea; NOGUEIRA, Anna Andressa Evangelista; http://lattes.cnpq.br/2549136312354338; https://orcid.org/0000-0002-6330-4760
The Bragantina platform occurs off the northern coast of Brazil and is delimited by the Bragança - Vizeu Basin to the east and the Guamá Arch to the south. The Pirabas Formation units of this platform as it has a rich fossiliferous content including vertebrates and invertebrates (especially foraminifera and ostracoda). This unit consists of carbonate and siliciclastic sediments deposited during transgressive and regressive episodes (Chattian-Burdigalian), intensely modifying the coastline in northern Brazil. In this study, benthic foraminifera were analyzed in 27 samples from core FPR-192, in the town of Primavera, northeast of the state of Pará, Brazil. Paleoenvironmental, paleoecological and paleobiogeographic conditions were inferred using multivariate and ratio (P/B) analyses, designating six biofacies, three associations, variations in paleoprofundity and six paleoecological variations from coastal or transitional zones (hypersaline to brackish lagoons, estuaries) to carbonate platforms (internal, middle and external). Local biozonation was proposed for the studied section based on benthic foraminiferal bioevents. These associations reflected three main ecozones according to paleoecological events related to sea level variations. These ecozones were defined and named five Partial Amplitude Zones (PAZ): Amphistegina lessonii, Heterolepa dutemplei, Elphidium crispum, Siphonina pulchra and Bolivina subcompressa; and one Concurrent Amplitude Zone: Buccella peruviana. The biochronostratigraphy of the section studied was based on the local appearance of A. lessonii and H. dutemplei (lower Oligocene, Rupelian) and the stratigraphic distribution of E. crispum, S. pulchra and B. subcompressa.
Acesso aberto (Open Access)
Fotomicrografia digital para estudos taxonômicos de Flebotomíneos do subgênero Psychodopygus do estado do Pará - Brasil
(Universidade Federal do Pará, 2011) SANTOS, Thiago Vasconcelos dos; ISHIKAWA, Edna Aoba Yassui; http://lattes.cnpq.br/3074963539505872
Sandflies are a group of insects of great medical interest, added by its vectorial association with the leishmaniasis. The correct identification of these species in the field is essential in the entomological research and control of vectors of Leishmania, principally in the state of Pará, where the Phlebotomine fauna is so diversified when we comparing to the Brazilian sum. However, this practical has been carried through for technician trained on the basis of the brought up to date “key” in 2003, supported for manual drawings of some researchers, that many times are of difficult agreement. Thus, this study it aimed to present the relevance of the use of the digital fotomicrography as an instrument of support for the identification and register of sandflies of the Psychodopygus subgenus. It was used as metodological boarding, the capture of images of blades of the collection of the Sandflies Insectary, Leishmaniais Laboratory, Evandro Chagas Institute, of several areas of epidemiological studies in Pará, in the period of 1970 until the present time, by the systems: Axiostar, Canon via Phototube and overlapping conventional camera over ocular the microscope. From the captured images, a database was constructed in accordance with the taxonomical hierarchy of Phlebotominae that had been later compared with traditional illustrations of identification keys. In the total of 2105 blades, 222 images of sandflies had been gotten. A data base contend 344 images referring to the 17 species of Psychodopygus was prepared diring the study. We conclude that the images of the structures drawn for different researchers throughout the years inside presented differences translating subjectiveness of interpretation for the same species of the Psychodopygus subgenus; thus the digital fotomicrography demonstrates to be a resource of great utility and importance, which had to present advantages, as: better quality of images, durability, fidedignity with the real observed and technological pratice, providing bigger security and or trustworthiness to the professional during the epidemiological inquiry.
Acesso aberto (Open Access)
Fungos causadores de ferrugens (Pucciniales) em plantas da Reserva Florestal Adolpho Ducke, Amazônia Central, Brasil
(Universidade Federal do Pará, 2018-06) CARVALHO, Aline Carvalho de; SOTÃO, Helen Maria Pontes; FRANÇA, Isadora Fernandes de
This work presents the Pucciniales fungi species found as parasites of plants in a forest area of the Amazon biome located in the Adolpho Ducke Forest Reserve (ADFR) in Manaus (AM), Brazil. Seventeen species were identified and all represent the first record for the study area. They were Aecidium annonae, A. amazonense, A. juruense, A. xylopiae, Crossopsora piperis, Desmella aneimiae, Dietelia duguetiae, Edythea palmaea, Porotenus biporus, P. memorae, Puccinia bambusarum, P. heliconiae, P. thaliae, Sphenospora smilacina, Uredo borreriae, U. maceiensis and U. pusilla. All represent the first record for the field of study. The list includes new records for Brazil (U. pusilla), for the Amazon region (D. duguetiae) and for the state of Amazonas (A. nnonae, A. xylopiae, C. piperis, E. palmaea, P. biporus and S. smilacina). Rust species were recorded in 17 genera and 12 families of plants (Annonaceae, Arecaceae, Bignoniaceae, Euphorbiaceae, Fabaceae, Heliconiaceae, Marantaceae, Piperaceae, Poaceae, Rubiaceae, Smilacaceae e Tectariaceae). Five rust species occurred on members of the family Annonaceae, and two species on Bignoniaceae; an identification key was created for the Pucciniales fungi found on these two families. Descriptions, geographical distributions, taxonomic comments, and illustrations for the new records for Brazil and for the Amazon are provided.
Acesso aberto (Open Access)
Fungos poróides (Agaricomycetes) na Floresta Nacional de Caxiuanã: fenologia e relação com o substrato, topografia e fatores micrometeorológicos
(Universidade Federal do Pará, 2011-03-30) MEDEIROS, Priscila Sanjuan de; CATTANIO, José Henrique; http://lattes.cnpq.br/1518769773387350
This study was conducted in one of the sites of Amazon Biodiversity Program (PPBio) located in the Caxiuanã National Forest (PA) and aimed to present the poroid fungi with emphasis on new record, analyze the relationship of these fungi with the woody substrate and to examine the association between micrometeorological variables (air temperature, relative humidity and rainfall) for one year, in relation to environmental variables, produced by topography, with richness, density, and phenology of these fungi. Were identified 76 species of poroid fungi, distributed in 27 genera and 5 families. The species Cerrena sclerodepsis, Phellinus dependens and Trametes pavonia represent the first records for the Pará state. Microporellus iguazuensis is mentioned for the first time in Brazil and presents the proposal of a new species to science, called Microporellus hirsuta. Most of the species was considered rare and showed preference for substrates in the early decomposition stages. The number of occurrences of basidiomata and fungi species was higher on the stem of the families plants Caesalpinaceae, Sapotaceae, Annonaceae, Mimosaceae and Lecythidaceae, respectively, and at substrate with a smaller diameter. It was expected that differences in microclimate generated by different altitudes, in a short topographic gradient, were sufficient to generate differences in the poroid fungal community. However, although it was found a greater number of species in a region called the intermediate, this difference was not significant. The largest number of individuals was found in the first rains and the richness is positively correlated with rainfall. The activity index of basidioma production of the abundant species was higher during the first rains after the dry period. This study represents an advance in understanding the relationships of the fungi with the environment in which they grow, mainly in tropical regions, but many studies still need to be developed to clarify these relationships.
Acesso aberto (Open Access)
O gênero Haplocytheridea Stephenson, 1936 (Crustacea-ostracoda) na Formação Pirabas, Pará
(Universidade Federal do Pará, 2010-01-28) NOGUEIRA, Anna Andressa Evangelista; RAMOS, Maria Inês Feijó; http://lattes.cnpq.br/4546620118003936
The genus Haplocytheridea has a wide stratigraphical distribution, occurring from the Cretaceous to Recent. Although the genus has a wide paleobiogeographical distribution it is restricted to the circumtropical regions occuring, mainly, in the North and Central America. This is the first record of this genus in Brazil occurring in the carbonate rocks from Pirabas Formation (Early Miocene) Pará state, northern part of the Brazilian coast. Ten species were identified: five are very similar to the species described to others localities from Europe, North, Central and South America: Haplocytheridea cf. H. larosaensis; H. aff. C. multipunctata; H. cf. dacica elegantior, H. cf. H. placentiaensis and H.? cf. C. (Leptocytheridea) hopikinsi; three are described as new species: H. sandbergi n. sp., H. pirabensis n. sp. and H. sinuosa n. sp.; and others two species were left in open nomenclature H. sp.1 and H. sp.2. The distribution of the genus Haplocytheridea in the studied area showed a cyclical depositional sequence of transitional/coastal to marine neritic paleoenvironments. Haplocytheridea is normally associated to nearshore deposits in tropical, carbonate shallow marine waters and sometimes is associated with coral reefs. Its descontinuous distribution in the studied sequence attests to T-R cycles conditions in the Quarry B-17 sequence.