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1.
Rev. bras. parasitol. vet ; 28(4): 773-778, Oct.-Dec. 2019. tab, graf
Article in English | LILACS | ID: biblio-1057977

ABSTRACT

Abstract The aim of the present study was to identify, through morphological and morphometric analyses, the species of trypanorhynch cestodes found as plerocerci in the intestinal serosa of Mugil liza and to determine their parasitic indices. One hundred and fifty specimens of this mullet collected off the coast of the state of Rio de Janeiro were necropsied and the trypanorhynch cestodes found were fixed and preserved as whole mounts for morphological analysis. The plerocerci were identified as Callitetrarhynchus gracilis and Pterobothrium crassicole, both with a prevalence of 0.67%, an intensity of 1 and abundance of 0.0067, in single infections. This is the first record of a trypanorhynch cestode parasitizing M. liza in Brazil. Although the parasitic indexes were low, from a hygienic-sanitary perspective the plerocerci of these species are visible to the naked eye, and thus can disgust consumers and make marketing the fish unfeasible.


Resumo O presente estudo objetivou determinar taxonomicamente as espécies de plerocercos de cestoides Trypanorhyncha encontradas na serosa intestinal das tainhas Mugil liza, através do estudo morfológico e morfométrico e indicar seus índices parasitários. Foram coletados 150 espécimes desta espécie de tainha do litoral do estado do Rio de Janeiro. Após as necropsias, os cestoides Trypanorhyncha encontrados foram fixados e preservados em montagens permanentes para permitir a análise de suas estruturas morfológicas. Os plerocercos foram identificados como Callitetrarhynchus gracilis e Pterobothrium crassicole e ambas as espécies apresentaram prevalência de 0,67%, intensidade de 1 e abundância de 0,0067, em infecções únicas. Este é o primeiro registro de cestoides Trypanorhyncha parasitando M. liza no Brasil. Quanto ao aspecto higiênico-sanitário, vale ressaltar que, embora os índices parasitários registrados tenham sido baixos, os plerocercos dessas espécies estavam visíveis a olho nu, podendo causar repugnância ao consumidor e inviabilizar a comercialização do pescado.


Subject(s)
Animals , Cestoda/anatomy & histology , Cestoda/classification , Fishes/parasitology , Brazil , Cestoda/isolation & purification , Commerce
2.
Hig. aliment ; 33(288/289): 2023-2026, abr.-maio 2019.
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1482454

ABSTRACT

Alguns parasitos, podem conferir aspecto repugnante ao pescado, sendo condenados pelo Serviço de Inspeção, quando na indústria de beneficiamento. Entre novembro de 2010 e maio de 2018 foram adquiridos 36 espécimes de Xystreurys rasile em mercados de pescados no município do Rio de Janeiro, Brasil. Os peixes foram identificados, medidos, pesados e necropsiados. Os cestoides foram processados segundo as técnicas usuais em helmintologia. Cinco linguados estavam parasitados por 29 cestoides do gênero Pterobothrium, os índices parasitários foram: prevalência (14%), intensidade média (5,8), abundância média (0,8) e amplitude de infecção (2-12) e os sítios de infecção foram estômago, intestino, rim, fígado, serosas do estômago, baço e fígado e cavidade abdominal. Este é o primeiro registro de Pterobothrium sp. parasitando X. rasile.


Subject(s)
Animals , Cestoda/classification , Cestoda/parasitology , Flounder/anatomy & histology , Flounder/parasitology , Food Inspection
3.
Rev. bras. parasitol. vet ; 28(2): 266-282, Apr.-June 2019. tab, graf
Article in English | LILACS | ID: biblio-1013738

ABSTRACT

Abstract Forty specimens of the Narrowstripe cardinal fish Apogon exostigma were examined for gastrointestinal helminthes, and 62.5% were infected with a new trypanorhynchid larval cestode parasite. The morphology of its larval stage was studied based on light and scanning electron microscopy. The data revealed plerocercoid larvae characterized by a pyriform body lined with prominent microtriches; the acraspedote scolex had four overlapping bothridia; four tentacles protruded through the pars bothridialis; the armature of the tentacles was homeocanthous, homeomorphous, and consisted of falcate compact rose-thorn-shaped tentacular hooks; four oval-shaped bulbs in pars bulbosa; and short appendix at terminal end of the body. Molecular analysis of the 18S rRNA sequences verified the taxonomy of this parasite and supported its morphology. We discovered that there was a close identity (up to 87%) with alternative species obtained for comparison from GenBank. The data also showed that there were high blast scores and low divergence values between this parasite and other Tentaculariidae species. The phyletic analysis showed that parasite sequences in conjunction with existing data places this trypanorhynchid species among the Tentaculariidae. This species is deeply embedded within genus Nybelinia with close relationships to Nybelinia queenslandensis as a putative sister taxon.


Resumo Quarenta espécimes do peixe cardinal Apogon exostigma da Narrowstripe foram examinados para identificar helmintos gastrointestinais, destes 62,5% foram infectados com um novo parasito larval cestóide tripanorrinquídeo. A morfologia de seu estágio larval foi estudada na microscopia de luz e eletrônica de varredura. Os dados revelaram larvas plerocercoides caracterizadas por uma forma piriforme com um corpo revestido por microtrícinos proeminentes; o escolex acraspedótico tinha quatro sobreposições; quatro tentáculos se projetavam através da pars botridialis; a armadura dos tentáculos era homeocante, homeomorfa e consistia de ganchos tentaculares em forma de espinhos, em forma de falcão; quatro bulbos ovais em pars bulbosa; e apêndice curto na extremidade terminal do corpo. A análise molecular das sequências de RNAr 18S verificou a taxonomia desse parasita e apoiou sua morfologia. Descobrimos que havia uma identidade próxima (até 87%) com espécies alternativas obtidas para comparação do GenBank. Os dados também mostraram que houve altos escores de brusone e baixos valores de divergência entre este parasita e outras espécies de Tentaculariidae. A análise filética mostrou que as sequências de parasitas em conjunto com os dados existentes colocam esta espécie de tripanorimidídeo entre os Tentaculariidae. Esta espécie está profundamente enraizada no gênero Nybelinia, tendo relações próximas com Nybelinia queenslandensis como um putativo táxon irmão.


Subject(s)
Animals , Perciformes/parasitology , Cestoda/isolation & purification , Cestode Infections/parasitology , Fish Diseases/parasitology , Phylogeny , Perciformes/classification , RNA, Ribosomal, 18S/genetics , Cestoda/anatomy & histology , Cestoda/classification , Cestoda/genetics
4.
Rev. bras. parasitol. vet ; 25(3): 368-373, July-Sept. 2016. tab, graf
Article in English | LILACS | ID: lil-795085

ABSTRACT

Abstract A total of 41 cestodes were collected during necropsy examination on 2 pumas (Puma concolor) that were found in 2 communities in Canchis province, Cuzco region, Peru, at 4500 meters above sea level (Peruvian Andes). The cestodes were evaluated morphologically and molecularly. A fragment of the mitochondrial cytochrome c oxidase subunit 1 gene (cox1) was used as a genetic marker. All the cestodes were identified as Taenia omissa. In the present report, we give a brief description by molecular and morphological diagnosis of the cestodes and compare nucleotide sequences with previous isolates from GenBank. Upon comparison, the sequences showed a difference in the cox1 gene of 5.1 to 5.3% with other teniids sequences. This finding constitutes the first report of T. omissa in Peru and expands the geographic distribution of this parasite.


Resumo Um total de quarenta e um cestóides foram coletados durante a necropsia de duas onça-pardas (Puma concolor) encontradas em duas comunidades na província de Canchis, em Cuzco, a 4500 metros acima do nível do mar, nos Andes peruanos. Os cestóides foram avaliados morfologicamente e molecularmente. Um fragmento do gene citocromo C oxidase subunidade 1 (cox1) foi utilizado como marcador genético. Todos os cestóides foram identificados como Taenia omissa. No presente relato, dá-se uma breve descrição dos cestóides e compara-se sequências de nucleotídeos com isolados anteriores presentes no GenBank. Após a comparação, as sequências mostraram uma diferença de 5,1-5,3% entre o gene cox1 e outras sequências de tênias. Esse achado constitui o primeiro relato de T. omissa no Peru e amplia a informação sobre a distribuição geográfica deste parasita.


Subject(s)
Animals , Taenia/isolation & purification , Puma/parasitology , Peru , Taenia/genetics , Base Sequence , Cestoda/classification
5.
Rev. Inst. Med. Trop. Säo Paulo ; 57(5): 447-450, Sept.-Oct. 2015. graf
Article in English | LILACS | ID: lil-766273

ABSTRACT

SUMMARY Cestodes of the Bertiella genus are parasites of non-human primates found in Africa, Asia, Oceania and the Americas. Species Bertiella studeri and Bertiella mucronatacould, accidentally, infect human beings. The infection occurs from ingestion of mites from the Oribatida order containing cysticercoid larvae of the parasite. The objective of this report is to register the first case of human infection by Bertiella studeri in Brazil. Proglottids of the parasite, found in the stool sample of a two-and-a-half-year-old child, were fixed, stained and microscopically observed to evaluate its morphological characteristics. Eggs obtained from the proglottids were also studied. The gravid proglottids examined matched the description of the genus Bertiella. The eggs presented a round shape, with the average diameter of 43.7 µm, clearly showing the typical pyriform apparatus of B. studeri. The authors concluded that the child was infected with Bertiella studeri,based on Stunkard's (1940) description of the species. This is the fifth case of human Bertiellosis described in Brazil through morphometric analysis of the parasite, the third in Minas Gerais State and the first diagnosed case of Bertiella studeriin Brazil.


RESUMO Os cestódeos do gênero Bertiellasão parasitos de primatas não humanos, os quais são encontrados na África, Ásia, Austrália, Oceania e Américas. As espécies Bertiella studeri e Bertiella mucronata podem, eventualmente, vir a infectar os seres humanos e a infecção acontece pela ingestão acidental de ácaros da ordem Oribatida infectados com larvas cisticercóides do parasito. O objetivo deste estudo foi relatar o primeiro caso humano por Bertiella studeri no Brasil. Proglotes do parasito, encontrado na amostra de fezes de uma criança com idade de 2,5 anos, foram fixados, corados e observados ao microscópio para avaliar as suas características morfológicas. Ovos, obtidos a partir dos proglotes também foram estudados. As proglotes grávidas examinadas estavam de acordo com a descrição do gênero Bertiella. Os ovos apresentam forma arredondada com diâmetro médio de 43,7 µm, demonstrando claramente aparelho piriforme típico de B. studeri. Os autores concluíram que a criança estava infectada com Bertiella studeri, de acordo com a descrição da espécie por Stunkard (1940). Este é o quinto caso de Bertiellose humana descrita no Brasil por meio de análises morfométricas do parasito, o terceiro em Minas Gerais e o primeiro caso de diagnóstico por Bertiella studeri no Brasil.


Subject(s)
Animals , Child, Preschool , Female , Humans , Cestoda/classification , Cestode Infections/epidemiology , Feces/parasitology , Brazil/epidemiology , Cestoda/isolation & purification , Cestode Infections/diagnosis , Cestode Infections/parasitology
6.
The Korean Journal of Parasitology ; : 1-11, 2015.
Article in English | WPRIM | ID: wpr-212740

ABSTRACT

Serine proteases form one of the most important families of enzymes and perform significant functions in a broad range of biological processes, such as intra- and extracellular protein metabolism, digestion, blood coagulation, regulation of development, and fertilization. A number of serine proteases have been identified in parasitic helminths that have putative roles in parasite development and nutrition, host tissues and cell invasion, anticoagulation, and immune evasion. In this review, we described the serine proteases that have been identified in parasitic helminths, including nematodes (Trichinella spiralis, T. pseudospiralis, Trichuris muris, Anisakis simplex, Ascaris suum, Onchocerca volvulus, O. lienalis, Brugia malayi, Ancylostoma caninum, and Steinernema carpocapsae), cestodes (Spirometra mansoni, Echinococcus granulosus, and Schistocephalus solidus), and trematodes (Fasciola hepatica, F. gigantica, and Schistosoma mansoni). Moreover, the possible biological functions of these serine proteases in the endogenous biological phenomena of these parasites and in the host-parasite interaction were also discussed.


Subject(s)
Animals , Cestoda/classification , Host-Parasite Interactions , Life Cycle Stages , Nematoda/classification , Serine Proteases/genetics , Trematoda/classification
7.
Mem. Inst. Oswaldo Cruz ; 106(6): 670-677, Sept. 2011.
Article in English | LILACS | ID: lil-602049

ABSTRACT

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.


Subject(s)
Animals , Female , Male , Bufonidae/parasitology , Cestoda/classification , Brazil , Cestoda/anatomy & histology , Cestoda/ultrastructure , Imaging, Three-Dimensional , Microscopy, Electron, Scanning
8.
Rev. patol. trop ; 40(2): 185-190, abr.-jun. 2011. ilus
Article in Portuguese | LILACS | ID: lil-598895

ABSTRACT

Relata-se um novo caso de bertielose humana em criança do sexo masculino, 8 anos, residente em área rural de Caeté, Minas Gerais, Brasil. O paciente queixava-se de dor abdominal periumbilical, hiporexia, enjoos, vômitos, diarréia e cefaléia do tipo holocraniana. Foi relatado o encontro de estruturas achatadas de cor esbranquiçada eliminadas nas fezes da criança. No exame parasitológico de fezes, foram identificados ovos de Ancilostomídeos, Rodentolepis nana (igual Hymenolepis) e Bertiella sp. Proglotes recuperadas nas fezes foram identificadas como Bertiella sp.


Subject(s)
Humans , Male , Child , Cestoda/classification , Cestode Infections , Rural Population , Brazil
9.
Mem. Inst. Oswaldo Cruz ; 104(8): 1177-1180, Dec. 2009. ilus
Article in English | LILACS | ID: lil-538179

ABSTRACT

Feline coprolites were examined for parasites with the aim of studying ancient infections that occurred in the Patagonian region during the Holocene period. Eggs compatible to Trichuris sp., Calodium sp., Eucoleus sp., Nematodirus sp., Oesophagostomum sp. (Nematoda), Monoecocestus sp. (Cestoda) and Eimeria macusaniensis (Coccidia) were recovered from faecal samples. The results obtained from the analysis provide evidence of consumption by felids of the viscera of both rodents and camelids. This knowledge allows for improved explanations as to the distribution of parasitism and its significance to the health of humans and animals inhabiting the area under study during the Middle Holocene.


Subject(s)
Animals , Cestoda/isolation & purification , Eimeria/isolation & purification , Fossils , Feces/parasitology , Felidae/parasitology , Nematoda/isolation & purification , Argentina , Cestoda/classification , Eimeria/classification , Nematoda/classification , Paleopathology
10.
Rev. chil. infectol ; 25(6): 465-471, dic. 2008. ilus, tab
Article in Spanish | LILACS | ID: lil-503966

ABSTRACT

Dipylidiasis is a zoonotic parasitic infection caused by the dog tapeworm Dipylidium caninum; it affects both feline and canine species and accidentally, humans. In Chile, as well as in other countries, it is an uncommon infection. A case of a 2 year old child from Casablanca, (a city located in the Valparaíso Región), with an infection by D. caninum, is presented. Clinical manifestations are reviewed, as well as epidemiology in domestic and wild animáis, cases among the published national literature and its treatment and prevention strategies.


La dipilidiasis es una zoonosis parasitaria provocada por Dipylidium caninum, teniasis que afecta a cánidos, félidos y, en forma accidental, al hombre. En Chile, al igual que en otros países, es una infección poco frecuente. Se presenta el caso de un preescolar con una infección por D. caninum, residente en la comuna de Casablanca, Región de Valparaíso. Se revisan las manifestaciones producidas por este agente, la epidemiología en animales domésticos y salvajes, los casos publicados en la literatura nacional, así como su tratamiento y las medidas de prevención.


Subject(s)
Animals , Cats , Child, Preschool , Dogs , Humans , Male , Cestoda/classification , Cestode Infections/parasitology , Anthelmintics/therapeutic use , Cestoda/anatomy & histology , Cestoda/isolation & purification , Cestode Infections/diagnosis , Cestode Infections/drug therapy , Feces/parasitology , Praziquantel/therapeutic use
11.
The Korean Journal of Parasitology ; : 181-189, 2007.
Article in English | WPRIM | ID: wpr-219744

ABSTRACT

The phylogenic relationships existing among 14 parasitic Platyhelminthes in the Republic of Korea were investigated via the use of the partial 28S ribosomal DNA (rDNA) D1 region and the partial mitochondrial cytochrome c oxidase subunit 1 (mCOI) DNA sequences. The nucleotide sequences were analyzed by length, G + C %, nucleotide differences and gaps in order to determine the analyzed phylogenic relationships. The phylogenic patterns of the 28S rDNA D1 and mCOI regions were closely related within the same class and order as analyzed by the PAUP 4.0 program, with the exception of a few species. These findings indicate that the 28S rDNA gene sequence is more highly conserved than are the mCOI gene sequences. The 28S rDNA gene may prove useful in studies of the systematics and population genetic structures of parasitic Platyhelminthes.


Subject(s)
Animals , Cats , Humans , Mice , Rats , Base Sequence , Cestoda/classification , Cestode Infections/parasitology , Conserved Sequence , DNA Primers/chemistry , DNA, Ribosomal/chemistry , Electron Transport Complex IV/genetics , Korea , Mice, Inbred BALB C , Molecular Sequence Data , Phylogeny , RNA, Ribosomal, 28S/genetics , Rats, Sprague-Dawley , Sequence Analysis, DNA , Trematoda/classification , Trematode Infections/parasitology
12.
Parasitol. latinoam ; 59(3/4): 162-166, jul. 2004. ilus
Article in Spanish | LILACS | ID: lil-396131

ABSTRACT

Se describe un céstodo encontrado en el intestino delgado de gatos provenientes de dos zonas diferentes de Costa Rica (Liberia-Guanacaste y Atenas-Alajuela). De acuerdo con un análisis comparativo morfológico se concluye que los ejemplares hallados corresponden a parásitos del género Spirometra ya que presentan el útero espiralado y huevecillos con los extremos puntiagudos, a diferencia del útero en roseta y huevecillos con extremos redondeados que se encuentran en el género Diphyllobothrium. Dado que presentan un número variable de vueltas en la parte anterior del útero y la vagina es ondulada se clasifican como Spirometra mansoni, siendo éste el primer reporte de este parásito en el país. Se hace una corta revisión de la importancia de este parasito para el ser humano.


Subject(s)
Cats , Humans , Animals , Cestode Infections/epidemiology , Spirometra/anatomy & histology , Spirometra/parasitology , Cestoda/classification , Costa Rica/epidemiology , Feces/parasitology , Sparganum/anatomy & histology
13.
Parasitol. latinoam ; 59(1/2): 31-36, Ene. 2004. ilus
Article in Portuguese | LILACS | ID: lil-383507

ABSTRACT

Specimes of elasmobranch fishes, captured in 1998 in the the State of Paraná, Brazil, were parasitized with Trypanorhyncha/Homeacanthoidea cestodes: Carcharhinus signatus with Heteronybelinia yamagutii (Dollfus, 1960) Palm, 1999 and H. nipponica (Yamaguti, 1952) Palm, 1999; Dipturus trachydermus (Krefft & Stehmann, 1975) with Mixonybelinia beveridgei (Palm et al, 1997) Palm, 1999. Details of scolex morphology of the two species of Heteronybelinia that expanded their desciptions were obtained. The known geographical distribution of the species is widened.


Subject(s)
Animals , Cestoda/classification , Cestoda/ultrastructure , Elasmobranchii/parasitology , Brazil , Fish Diseases , Microscopy, Electron, Scanning
14.
Southeast Asian J Trop Med Public Health ; 2003 Jun; 34(2): 298-300
Article in English | IMSEAR | ID: sea-33874

ABSTRACT

This is the first case report of Bertiella studeri infection in Vietnam. The patient was a 4 year old boy in Cai Lay district of Tien Giang Province, noting some proglottids in his feces. The time and mode of infection were unknown, but anorexia, weight loss, and intermittent diarrhea were noted. Niclosamide (Yomesan) 1 gram was prescribed, and then albendazole (Zentel) 400mg daily for 3 days. Proglottids were found in the feces three months after the first treatment, and 1 month after the second course.


Subject(s)
Albendazole/therapeutic use , Animals , Anticestodal Agents/therapeutic use , Cestoda/classification , Cestode Infections/diagnosis , Child, Preschool , Humans , Male , Niclosamide/therapeutic use , Vietnam
15.
Parasitol. día ; 24(3/4): 97-101, jul-dic. 2000.
Article in Portuguese | LILACS | ID: lil-282228

ABSTRACT

Entre janeiro a novembro de 1999 foram examinados 55 espécimenes de Trichiurus lepturus Linnaeus, 1758 (Osteichthyes: trichiuridae) provenientes do litoral do Estado do Rio de Janeiro, brasil (aprox. 21-23º S, 41-45º O), sendo necropsiados para estudio dos seus metazoários parasitos. Onze espécies de metazoários parasitos foram encontrados: 1 digenético, 1 monogenético, 2 cestóides, 1 acan-tocéfalo, 5 nematóides e 1 copépode. Trichiurus lepturus é um novo registro de hospedeiro para as seguintes espécies: Callitetrarhynchus gracilis. Hysterothylacium sp. e Raphidas-caris sp. Octoplectanocotyla trichiuri e Polymorphus sp. são registrados pela primeira vez no Brasil


Subject(s)
Animals , Cestoda/classification , Fishes/parasitology , Nematoda/classification , Cestoda/isolation & purification , Digestive System/parasitology , Gills/parasitology , Mesentery/parasitology , Nematoda/isolation & purification , Host-Parasite Interactions
16.
Mem. Inst. Oswaldo Cruz ; 91(6): 723-6, Nov.-Dec. 1996. ilus
Article in English | LILACS | ID: lil-181137

ABSTRACT

Spasskyellina mandi n. sp. (Proteocephalidea: Monticelliidae) is decribed from the Siluriform fish pimelodus ornatus Kner, 1857, caught in the Parana river, Parana, Brazil. The new species differs from other species of the same genus mainly by a fewer number of testes and by a larger osmoregulatory canal. This is the second species of proteocephalidean cestode collected in P. ornatus.


Subject(s)
Animals , Cestoda/classification , Fishes/parasitology
17.
Bol. chil. parasitol ; 51(1/2): 34-5, ene.-jun. 1996.
Article in Spanish | LILACS | ID: lil-185096

ABSTRACT

The chilean leptodactylid frog eupsophus calcaratus, a typical inhabitant of the temperate forest of South America, is registered as a new host of baerietta chilensis (cestoda: nematotaeniidae)


Subject(s)
Animals , Anura/parasitology , Cestoda/isolation & purification , Cestoda/classification , Host-Parasite Interactions
18.
Bol. chil. parasitol ; 48(1/2): 12-6, ene.-jun. 1993. ilus, tab
Article in English | LILACS | ID: lil-130949

ABSTRACT

Se describe anthobothrium loculatum, una nueva especie de cestode encontrada en la válvula espiral del intestino del pez dasyatis uarnak. Este gusano tiene la especial característica de poseer 4-5 pares de notables hendiduras en cada surco del escólex. Difiere de otras especies de anthobothrium en muchos aspectos tales como su tamaño, dimensiones de las botrias y número de testículos


Subject(s)
Animals , Cestoda/classification , Fishes/parasitology , Intestinal Diseases, Parasitic/parasitology , Parasites/physiology , Host-Parasite Interactions/physiology , Species Specificity
19.
Bol. chil. parasitol ; 48(1/2): 15-7, ene.-jun. 1993. tab, ilus
Article in English | LILACS | ID: lil-130950

ABSTRACT

Se describe la nueva especie de cestode parásito acanthobothrium satyanarayanaraoi del huésped elasmobranquio rhinobatus granulatus. Este gusano se diferencia de otras especies conocidas del género acanthobothrium en su mayor tamaño, escólex más grande, botridias y en algunas otras características


Subject(s)
Animals , Cestoda/parasitology , Fishes/parasitology , Intestinal Diseases, Parasitic/parasitology , Cestoda/classification , Host-Parasite Interactions/physiology
20.
Mem. Inst. Oswaldo Cruz ; 88(1): 85-8, jan.-mar. 1993. ilus
Article in English | LILACS | ID: lil-117654

ABSTRACT

Raillietina (Raillietina) guaricanae n. sp. is described from the wild rats Oryzomys intermedius, O. nigripes and O. ratticeps, captured in the Environmental Protection Area of Guaricana, from November 1988 to December 1989. Raillietina (Railietina) guaricanae n. sp. is closely related to the Neotropical mammalian Raillietina, however it differs by the fewer number of rostellar hooks, and tests different number of eggs capsules and host species. The number of known species of Raillietina (Raillietina), parasites of mammals in the Neotropical Region, is increased to four


Subject(s)
Animals , Cestoda/classification , Rats/parasitology , Brazil
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