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First record of the invasive snail Melanoides tuberculatus (Gastropoda: Prosobranchia: Thiaridae) in the Paran? River basin, GO, Brazil
Rocha-Miranda, F.;Martins-Silva, M. J.;
Brazilian Journal of Biology , 2006, DOI: 10.1590/S1519-69842006000600018
Abstract: the thiarid snail melanoides tuberculatus (müller, 1774), native to asia and east africa was recorded for the first time in the paran? river basin, goiás state. there is no evidence concerning introduction vectors but aquarium releases is the most probable vector. specimens were collected at three different water bodies after twenty-seven rivers were investigated. the possible spread of this species to other habitats and potential effects on native thermal water communities are discussed.
Distribución y posible competencia entre Melanoides tuberculata y Tarebia granifera (Prosobranchia: Thiaridae) en el lago Hanabanilla, Cuba
GUTIERREZ AMADOR,ALFREDO; PERERA DE PUGA,GLORIA; YONG CONG,MARY; FERRER LOPEZ,JOSE RAUL; SANCHEZ NODA,JORGE;
Revista Cubana de Medicina Tropical , 1995,
Abstract: se llevó a cabo un estudio durante 3 a?os, sobre la distribución y posible competencia entre las 2 especies de tiáridos presentes en el lago hanabanilla en cuba, melanoides tuberculata y tarebia granifera . ambas especies presentaron diferencias significativas en su abundancia dentro de un microhábitat determinado, pero lograron equiparar sus densidades para el área total muestreada. estas variaciones se debieron principalmente a la proporción de juveniles de cada especie. solamente se detectó interacción significativa cuando se alcanzaron altos valores de abundancia y existía algún recurso en limitación (fundamentalmente el área más cercana a la orilla). los 2 tiáridos presentaron una alta amplitud de nicho, pero tarebia granifera fue ligeramente superior, además, esta especie fue dominante al final del estudio en la mayoría de las zonas muestreadas.
Distribución y posible competencia entre Melanoides tuberculata y Tarebia granifera (Prosobranchia: Thiaridae) en el lago Hanabanilla, Cuba  [cached]
ALFREDO GUTIERREZ AMADOR,GLORIA PERERA DE PUGA,MARY YONG CONG,JOSE RAUL FERRER LOPEZ
Revista Cubana de Medicina Tropical , 1995,
Abstract: Se llevó a cabo un estudio durante 3 a os, sobre la distribución y posible competencia entre las 2 especies de tiáridos presentes en el lago Hanabanilla en Cuba, Melanoides tuberculata y Tarebia granifera . Ambas especies presentaron diferencias significativas en su abundancia dentro de un microhábitat determinado, pero lograron equiparar sus densidades para el área total muestreada. Estas variaciones se debieron principalmente a la proporción de juveniles de cada especie. Solamente se detectó interacción significativa cuando se alcanzaron altos valores de abundancia y existía algún recurso en limitación (fundamentalmente el área más cercana a la orilla). Los 2 tiáridos presentaron una alta amplitud de nicho, pero Tarebia granifera fue ligeramente superior, además, esta especie fue dominante al final del estudio en la mayoría de las zonas muestreadas.
Allometry of the Gastropod Melanopsis praemorsa (Thiaridae: Prosobranchia) From Azraq Oasis, Jordan  [PDF]
Ali Z. Elkarmi,Naim S. Ismail
Pakistan Journal of Biological Sciences , 2006,
Abstract: A total of 300 specimens of the freshwater gastropod Melanopsis praemorsa (Thiaridae: Prosobranchia) from Azraq Oasis, Jordan, were studied for age, growth and shell morphometrics. Nonlinear and linear allometric analysis, Von Bertalanfi`s and Richard`s growth models were used to analyze the results. The results show the life span to be five years and the mean observed lengths of the five age cohorts range from 9.6 to 20.6 mm. The theoretical maximum length of this snail may reach 25.7 and 21.4 mm, respectively while the shell and dry body weights averaged 380.8 and 239.8 mg, respectively. The relationships of the shell length to shell and dry body weights are curvilinear and the relationships of the shell length to shell width, aperture length and aperture width are linear. These results are mainly in agreement with the results reported for other snails with similar relationships between the measured snail parameters.
LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLíN, COLOMBIA  [cached]
VERGARA DANIELA,VELáSQUEZ LUZ ELENA
Acta Biológica Colombiana , 2009,
Abstract: RESUMEN Se describen las larvas de digeneos que se obtuvieron en Melanoides tuberculata (Gastropoda: Thiaridae), molusco dulceacuícola del que se colectaron 125 especímenes en el lago del Jardín Botánico Joaquín Antonio Uribe de Medellín. En el laboratorio se individualizaron y se estimuló la emisión cercariana con una fuente luminosa. El 9,6 % de los caracoles emitió cercarias. Los moluscos emisores se sacrificaron para obtener los demás estadios larvarios. Las larvas se montaron al microscopio, se midieron y luego se dibujaron. Los caracteres morfológicos permitieron establecer la presencia de Centrocestus formosanus (Heterophyidae) y de dos Philophthalmidae. Uno de estos es primer registro para Colombia. Se confirma la sensibilidad de M. tuberculata a infecciones por digeneos, así como la especificidad de los filoftálmidos por moluscos hospedadores de la superfamilia Cerithioidea. Palabras claves: cercarias, digenea, Melanoides tuberculata, Philophthalmidae, Redias. ABSTRACT The larvae of two trematodes found in the freshwater mollusk Melanoides tuberculata (Gastropoda: Thiaridae) are described. 125 snails from the Medellina€ s Botanical Garden Joaquín Antonio Uribe were collected. In the laboratory, each individual was placed alone and stimulated with light in order to have cercaria emission. 9.6% of the snails released cercariae. These were separated in three morphologies. From each one, 15 individuals were measured and drawn. Photographs were taken. Based on their morphological characteritics the presence of Centrocestus formosanus (Heterophyidae) was determined. The other two morphologies were classified in the family Philophthalmidae. One of them constitutes the first register for Colombia. The sensibility of M. tuberculata to infections by digeneans, and the specificity of the family Philophthalmidae to mollusk hosts of the superfamily Cerithioidea are confirmed. Key words: Cercariae, Digenea, Melanoides tuberculata, Philophthalmidae, Rediae.
LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLíN, COLOMBIA
VERGARA,DANIELA; VELáSQUEZ,LUZ ELENA;
Acta Biológica Colombiana , 2009,
Abstract: the larvae of two trematodes found in the freshwater mollusk melanoides tuberculata (gastropoda: thiaridae) are described. 125 snails from the medellin’s botanical garden joaquín antonio uribe were collected. in the laboratory, each individual was placed alone and stimulated with light in order to have cercaria emission. 9.6% of the snails released cercariae. these were separated in three morphologies. from each one, 15 individuals were measured and drawn. photographs were taken. based on their morphological characteritics the presence of centrocestus formosanus (heterophyidae) was determined. the other two morphologies were classified in the family philophthalmidae. one of them constitutes the first register for colombia. the sensibility of m. tuberculata to infections by digeneans, and the specificity of the family philophthalmidae to mollusk hosts of the superfamily cerithioidea are confirmed
The introduced snail Melanoides Tuberculatus (Muller, 1774) (Mollusca: Thiaridae) in aquatic ecosystems of the Brazilian Semiarid Northeast (Piranhas-Assu River basin, State of Rio Grande do Norte)
Santos, CM.;Eskinazi-Sant'Anna, EM.;
Brazilian Journal of Biology , 2010, DOI: 10.1590/S1519-69842010000100003
Abstract: records of the gastropod melanoides tuberculatus (müller, 1774), family thiaridae, in the piranhas-assu river basin in rio grande do norte reveal the dispersal of this native southeast asian and east african species into aquatic environments of the brazilian semiarid region, including artificial environments (reservoirs) and lotic systems. the eutrophic conditions of the local waterbodies appear to favor the present situation, where this invasive species reaches extremely high densities, sometimes over 10,000 ind.m-2 as in armando ribeiro gon?alves reservoir. these observations indicate the immediate need for new studies on the spatial distribution of the species and its potential impact on the biodiversity and water quality of the waterbodies of the semiarid region of the state. implantation of regular and systematic monitoring of the aquatic resources of the region is urgently required.
Melanoides tuberculata (Mollusca: Thiaridae) as an intermediate host of Centrocestus formosanus (Trematoda: Heterophyidae) in Brazil
Pinto, Hudson Alves;Melo, Alan Lane de;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2010, DOI: 10.1590/S0036-46652010000400008
Abstract: pleurolophocercous cercariae emerged from naturally infected melanoides tuberculata from minas gerais state, brazil, were used to perform experimental infection of laboratory-reared poecilia reticulata. mature metacercariae were obtained from the gills of fishes and force-fed to mus musculus. the adult parasites which recovered from small intestines of mice were identified as centrocestus formosanus. this is the first report of m. tuberculata as intermediate host of this heterophyid in brazil.
Size-mass relationships of Melanoides tuberculatus (Thiaridae: Gastropoda) in a eutrophic reservoir
Silva, Eduardo Carvalho;Molozzi, Joseline;Callisto, Marcos;
Zoologia (Curitiba) , 2010, DOI: 10.1590/S1984-46702010000500004
Abstract: this study evaluated the relationships of certain allometric measurements in melanoides tuberculatus muller, 1774, in order to develop a statistical model to estimate the biomass of this mollusc species. we measured the total length and aperture of 70 shells. these measurements were correlated with the biomass values to construct exponential and power-function models, and both models showed high coefficients of determination. the exponential model was the better biomass predictor, with a coefficient of determination over 93%. these proposed models may be an effective tool to determine the biomass of m. tuberculatus in eutrophic brazilian reservoirs.
Melanoides tuberculatus (Gastropoda: Thiaridae) as intermediate host of Heterophyidae (Trematoda: Digenea) in Rio de Janeiro metropolitan area, Brazil
Bogéa, Tami;Cordeiro, Fernanda Martins;Gouveia, Janaína Silva de;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2005, DOI: 10.1590/S0036-46652005000200005
Abstract: in the late 1960s, melanoides tuberculatus snails were introduced in brazil from north/east africa and southeast asia. the first records of specimens infected with cercariae were registered in rio de janeiro state in 2001. the present study reports the occurrence of m. tuberculatus infected with larval trematodes in rio de janeiro city. bottom sediment was collected with dip nets and sieved through 0.25 inch-mesh screening. snails were transported to the laboratory in vials with stream water, then measured and individually isolated in glass vials with distilled water. they were exposed to artificial light and temperature to induce cercarial emergence. the most actively emerging cercariae were processed by differential staining and silver nitrate impregnation methods. negative snails were subsequently dissected. approximately 700 snails were collected. snail total lengths ranged from 1.2 to 3.3 cm. the prevalence rate was 15.76% although 53.76% of the snails were found infected in one of the sites. infected snails were infected with rediae and pleurolophocercous cercariae. cercarial morphology and chaetotaxy were consistent with those of the family heterophyidae mostly due to the presence of median dorsal and ventral fins on the tail and the absence of ci dorsal sensory receptors.
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