Navegando por Autor "GIESE, Elane Guerreiro"

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Acesso aberto (Open Access)
Acanthocephala Larvae parasitizing Ameiva ameiva ameiva (Linnaeus, 1758) (Squamata: Teiidae)
(Universidade Federal do Pará, 2016-03) MACEDO, Lilian Cristina; MELO, Francisco Tiago de Vasconcelos; ÁVILA-PIRES, Teresa Cristina Sauer de; GIESE, Elane Guerreiro; SANTOS, Jeannie Nascimento dos
Knowledge concerning the taxonomy and biology of species of Acanthocephala, helminth parasites of the helminth species of the phylum Acanthocephala, parasites of lizards in Brazilian Amazonia, is still insufficient, but reports of Acanthocephala in reptiles are becoming increasingly common in the literature. Cystacanth-stage Acanthocephalan larvae have been found in the visceral peritoneum during necropsy of Ameiva ameiva ameivalizards from the “Osvaldo Rodrigues da Cunha” Herpetology Collection of the Emílio Goeldi Museum, Belém, Pará, Brazil. The aim of this study was to present the morphological study of the Acanthocephala larvae found in A. ameiva ameiva lizard.
Acesso aberto (Open Access)
Calodium hepaticum (Nematoda: Capillariidae) in synanthropic rodents (Rattus norvegicus and Rattus rattus) in Eastern Amazonia
(2013-06) MOREIRA, Vera Lúcia Coimbra; GIESE, Elane Guerreiro; SILVA, Djane Clarys Baía da; MELO, Francisco Tiago de Vasconcelos; FURTADO, Adriano Penha; MALDONADO JUNIOR, Arnaldo; SANTOS, Jeannie Nascimento dos
Calodium hepaticum (syn. Capillaria hepatica) is a trichurid nematode that parasitizes the hepatic parenchyma of rodents and other mammals. Infections in humans are rare, although they have been reported worldwide. A number of factors contribute to the distribution of this zoonosis, particularly the presence of dense populations of rodents associated with relatively poor urban environments, such as those found in parts of the northern Brazilian city of Belém in the eastern Amazon Basin. This study quantified Calodium infections in commensal synanthropic rodents in Belém. Rodents were captured in three neighborhoods characterized by poor public sanitation and the city's highest incidence of human leptospirosis. A total of 50 rodents were captured (26 Rattus rattus and 24 R. norvegicus), and 23 (10 R. rattus and 13 R. norvegicus) presented macroscopic lesions typical of C. hepaticum. Light microscopy of fresh samples and histological specimens permitted the identification of larvae and adult specimens containing numerous eggs with a double-striated shell and bipolar opercula with plugs. This is the first report of C. hepaticum in R. rattus and R. norvegicus from the Amazon Basin, and it shows a considerable risk of transmission to the local human population.
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)
Lanfrediella amphicirrus gen. nov. sp. nov. Nematotaeniidae (Cestoda: Cyclophyllidea), a tapeworm parasite of Rhinella marina (Linnaeus, 1758) (Amphibia: Bufonidae)
(2011-09) MELO, Francisco Tiago de Vasconcelos; GIESE, Elane Guerreiro; FURTADO, Adriano Penha; SOARES, Maurílio José; GONÇALVES, Evonnildo Costa; VALLINOTO, Antonio Carlos Rosário; SANTOS, Jeannie Nascimento dos
The family Nematotaeniidae, tapeworms commonly found in the small intestines of amphibians and reptiles, includes 27 recognised species distributed among four genera: Bitegmen Jones, Cylindrotaenia Jewell, Distoichometra Dickey and Nematotaenia Lühe. The taxonomy of these cestodes is poorly defined, due in part to the difficulties of observing many anatomical traits. This study presents and describes a new genus and species of nematotaeniid parasite found in cane toads (Rhinella marina) from eastern Brazilian Amazonia. The cestodes were collected during the necropsy of 20 hosts captured in the urban area of Belém, Pará. The specimens were fixed and processed for light microscopy, scanning electron microscopy (SEM) and three-dimensional (3D) reconstruction. Samples were also collected for molecular analyses. The specimens presented a cylindrical body, two testes and paruterine organs. However, they could not be allocated to any of the four existing nematotaeniid genera due to the presence of two each of dorsal compact medullary testes, cirri, cirrus pouches, genital pores, ovaries and vitelline glands per mature segment. Lanfrediella amphicirrus gen. nov. sp. nov. is the first nematotaeniid studied using Historesin analysis, SEM and 3D reconstruction, and it is the second taxon for which molecular data have been deposited in GenBank.
Acesso aberto (Open Access)
Morphological characterization of Eustrongylides sp. larvae (Nematoda, Dioctophymatoidea) parasite of Rhinella marina (Amphibia: Bufonidae) from Eastern Amazonia
(Universidade Federal do Pará, 2016-06) MELO, Francisco Tiago de Vasconcelos; MELO, Caroline do Socorro Barros; NASCIMENTO, Luciana de Cássia Silva do; GIESE, Elane Guerreiro; FURTADO, Adriano Penha; SANTOS, Jeannie Nascimento dos
Eustrongylides spp. nematodes have birds as final hosts and uses other vertebrates as intermediate/paratenic host (fish, amphibians and reptiles) and have zoonotic potential. In amphibians, the larvae may be located in the subcutaneous tissues, liver and mesentery, between the muscle fibres, especially in the lower limbs. Rhinella marina, which is widely observed in Brazil, has exhibited complex diversity in its helminth fauna, reflecting the unique habitat of the Amazon biome. For the first time, this study describes the morphological aspects of third-stage larvae of Eustrongylides sp. in Rhinella marina from Santa Cruz do Ararí, Marajó Archipelago, Eastern Amazonia, using light and scanning electron microscopy.
Acesso aberto (Open Access)
A new species of Mesocoelium (Digenea: Mesocoeliidae) found in Rhinella marina (Amphibia: Bufonidae) from Brazilian Amazonia
(2013-04) GOMES, Tássia Fernanda Furo; MELO, Francisco Tiago de Vasconcelos; GIESE, Elane Guerreiro; FURTADO, Adriano Penha; GONÇALVES, Evonnildo Costa; SANTOS, Jeannie Nascimento dos
Mesocoelium lanfrediae sp. nov. (Digenea: Mesocoeliidae) inhabits the small intestine of Rhinella marina (Amphibia: Bufonidae) and is described here, with illustrations provided by light, scanning electron microscopy and molecular approachs. M. lanfrediae sp. nov. presents the typical characteristics of the genus, but is morphometrically and morphologically different from the species described previously. The main diagnostic characteristics of M. lanfrediae sp. nov. are (i) seven pairs of regularly-distributed spherical papillae on the oral sucker, (ii) ventral sucker outlined by four pairs of papillae distributed in a uniform pattern and interspersed with numerous spines, which are larger at the posterior margin and (iii) small, rounded tegumentary papillae around the opening of the oral sucker, which are morphologically different from those of the oral sucker itself, some of which are randomly disposed in the ventrolateral tegumentary region of the anterior third of the body. Addionally, based on SSU rDNA, a phylogenetic analysis including Brachycoeliidae and Mesocoeliidae taxa available on GenBank established the close relationship between M. lanfrediae sp. nov. and Mesocoelium sp.
Acesso aberto (Open Access)
Raphidascaris (Sprentascaris) lanfrediae sp. nov. (Nematoda: Anisakidae) from the fish Satanoperca jurupari (Osteichthyes: Cichlidae)
(2011-08) MELO, Marly de Fátima Carvalho de; SANTOS, Jeannie Nascimento dos; GIESE, Elane Guerreiro; SANTOS, Everton Gustavo Nunes dos; SANTOS, Cláudia Portes
Raphidascaris (Sprentascaris) lanfrediae sp. nov. is described from the intestine of the freshwater fish Satanoperca jurupari (Heckel) (Cichlidae) from the Guamá River, state of Pará, Brazil. The prevalence in fish (n = 59) was 27% with intensity of one-124 (mean 16) nematodes per fish. The new species is characterized mainly by the markedly larger size of ventricular appendix in relation to the oesophagus, presence of short male caudal alae, 14-16 subventral pairs of preanal papillae and six pairs of postanal papillae.
Acesso aberto (Open Access)
Rhabdias paraensis sp. nov.: a parasite of the lungs of Rhinella marina (Amphibia: Bufonidae) from Brazilian Amazonia
(2011-06) SANTOS, Jeannie Nascimento dos; MELO, Francisco Tiago de Vasconcelos; NASCIMENTO, Luciana de Cássia Silva do; NASCIMENTO, Daisy Esther Batista do; GIESE, Elane Guerreiro; FURTADO, Adriano Penha
The nematode parasites of Rhinella marina include species of the genus Rhabdias (Rhabdiasidae: Rhabditoidea). The present study describes Rhabdias paraensis sp. nov., which parasitizes the lungs of R. marina in Brazilian Amazonia. Of the more than 70 known species of this genus, 18 are parasites of bufonids, of which, eight are Neotropical. The new species described here is similar to Rhabdias alabialis in the absence of lips is different by the presence of conspicuous cephalic papillae. We describe details of the four rows of pores, which are distributed equally along the whole of the length of the body and connected with hypodermal cells, using histology and scanning electron microscopy. Other histological aspects of the internal structure of this nematode are also described.