Identificación de nemátodos parásitos en peces dulceacuícolas colectados en los ríos: San Pablo, Caracol y Babahoyo
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2011
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Universidad de Guayaquil
Resumen
La ciudad de Babahoyo se encuentra ubicada a 8 metros del nivel del mar, su terreno
es plano con pocas elevaciones, posee un clima cálido – lluvioso con una temperatura
promedio anual de 24 °C. En el cantón encontramos un gran número de ríos entre los
principales están: San Pablo, Caracol y Babahoyo que vierten sus aguas en el río
Guayas.
Los nemátodos zoo parásitos están ampliamente distribuidos al igual que el número de
hospederos en la geografía del planeta, encontrándose en los ecosistemas marinos,
dulceacuícolas y terrestres, estando presente en casi todos los seres desde
invertebrados hasta vertebrados, adaptándose a los diversos cambios ocurridos con el
paso del tiempo.
En la presente investigación se analizó un total de 120 peces dulceacuícolas divididos
en ocho géneros y ocho especies. Los muestreos se llevaron a cabo en los meses de
enero, febrero y marzo del 2011 en la ciudad de Babahoyo, en los Ríos: Babahoyo, San
Pablo y Caracol. Se describen tres especies de nematodos divididos en dos familia,
Anisakidae (Contracaecum sp.), larvas; Camallanidae (Camallanus sp. y Procamallanus
sp.), hembras adultas. Se obtuvo una diversidad de 0.30 bits con el índice de Shannon,
mientras que el índice de Brillouin 0.26 bits, el índice de equidad de Pielou de 0.19, de
Brillouin 0.17 y en índice de dominancia de Simpson de 0.90.
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Del total de peces analizados, 38 peces fueron positivos para la presencia de
nematodos lo cual representa el 31.6 %. Los peces que presentaron nematodos dentro
de su organismo fueron: Brycon dentex, Hoplias microlepis, Leporinus ecuadoriensis,
Aequidens rivulatus y Rhamdia cinerascens. La especie que presento la mayor
cantidad de nematodos en su organismo fue Brycon dentex; Contracaecum sp. fue la
especie con mayor abundancia, prevalencia media e intensidad media en los tres ríos
muestreados durante esta investigación
Babahoyo City is located at 8 meters above the sea, its terrain is flat with little elevation, has a warm climate - rainy with an average temperature of 24 ° C. In Canton we find a large number of rivers between the main ones are: San Pablo, Caracol and Babahoyo that flow into the river Guayas. Zoo-Parasitic nematodes are widely distributed as the number of hosts in the geography of the planet, found in marine, freshwater and terrestrial, being present in nearly all beings from invertebrates to vertebrates, adapting to various changes over time. In the present study analyzed a total of 120 freshwater fish into eight genera and eight species. Sampling was conducted during the months of January, February and March 2011 in the city of Babahoyo, in Rivers: Babahoyo, San Pablo and Caracol. We describe three nematode species divided into two families, Anisakidae (Contracaecum sp.) Larvae; Camallanidae (Camallanus sp. y Procamallanus sp.) Adult females. We obtained a range of 0.30 bits with Shannon's index, while the Brillouin index 0.26 bits, the parity index of 0.19 Pielou, Brillouin and 0.17 Simpson's dominance index of 0.90. Of all analyzed fish, 38 fish were positive for the presence of nematodes which represents 31.6%. Fish nematodes present in his body were: Brycon dentex, Hoplias x microlepis, Leporinus ecuadoriensis, and Rhamdia cinerascens rivulatus Aequidens. The species that presented the greatest number of nematodes in your body was Brycon dentex, Contracaecum sp. was the most abundant species, mean prevalence and mean intensity in the three rivers sampled during this investigation
Babahoyo City is located at 8 meters above the sea, its terrain is flat with little elevation, has a warm climate - rainy with an average temperature of 24 ° C. In Canton we find a large number of rivers between the main ones are: San Pablo, Caracol and Babahoyo that flow into the river Guayas. Zoo-Parasitic nematodes are widely distributed as the number of hosts in the geography of the planet, found in marine, freshwater and terrestrial, being present in nearly all beings from invertebrates to vertebrates, adapting to various changes over time. In the present study analyzed a total of 120 freshwater fish into eight genera and eight species. Sampling was conducted during the months of January, February and March 2011 in the city of Babahoyo, in Rivers: Babahoyo, San Pablo and Caracol. We describe three nematode species divided into two families, Anisakidae (Contracaecum sp.) Larvae; Camallanidae (Camallanus sp. y Procamallanus sp.) Adult females. We obtained a range of 0.30 bits with Shannon's index, while the Brillouin index 0.26 bits, the parity index of 0.19 Pielou, Brillouin and 0.17 Simpson's dominance index of 0.90. Of all analyzed fish, 38 fish were positive for the presence of nematodes which represents 31.6%. Fish nematodes present in his body were: Brycon dentex, Hoplias x microlepis, Leporinus ecuadoriensis, and Rhamdia cinerascens rivulatus Aequidens. The species that presented the greatest number of nematodes in your body was Brycon dentex, Contracaecum sp. was the most abundant species, mean prevalence and mean intensity in the three rivers sampled during this investigation
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Santos Pinargote, Jaime (2011): Identificación de nemátodos parásitos en peces dulceacuícolas colectados en los ríos: San Pablo, Caracol y Babahoyo