Determinación de patógenos en Langosta australiana Cherax quadricarinatus (Von Martes) presentes en el Embalse Chongón, Prov. Guayas
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2013
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El presente trabajo determina la presencia de diversos patógenos que causan
mortalidades y otros que viven como ectoparásitos comensales sin causar daños en el
huésped. Las muestras fueron recolectadas en el embalse Chongón, Provincia del
Guayas, durante los meses de Julio, Agosto y Septiembre del 2013. El registro de estos patógenos pudo ser posible aplicando técnicas de análisis y montajes en fresco de exoesqueleto, branquias, hepatopáncreas, intestino, gónadas y musculo. Se detectó la presencia de Cianobacteria Oscillatoria ssp., en el interior del intestino y Anabaena ssp. en branquias. De igual manera, se determinó la presencia de epibiontes ciliados como Epistylis ssp., en el interior de branquias, y en la superficie del exoesqueleto. El ciliado Trochilia ssp., pudo ser observado mediante montajes en fresco de branquias. Se registró la aparición de Platelmintos Turbelarios y Temnocephalos como Diceratocephala ssp, Temnocephala ssp y Craspedella ssp., desplazándose libremente y colonizando segmentos y órganos importantes de la Cherax quadricarinatus. El total de muestras analizadas fueron noventa langostas, tomando en cuenta signos clínicos de enfermedad como letargia, parálisis, inactividad, recostado sobre la superficie dorsal, y muerte En conclusión lo que más se observaron y registraron en el muestreo fueron los platelmintos 37%, seguidamente Trochilia 24%, y posteriormente Epistylis y Cianobacterias 19.5%.
This study determines the presence of various pathogens that cause mortalities and other ectoparasites living as commensals without causing damage to the host. The Redclaw crayfish were collected in the reservoir Chongón, Guayas Province, during the months of July, August and September 2013. Registration of these pathogens could be possible by applying analysis techniques and fresh mounts of exoskeleton, gills, hepatopancreas, intestine, gonads and muscle Detected the presence of cyanobacteria Oscillatoria ssp., inside the intestine and Anabaena ssp.in gills. Similarly was determined the presence of ciliated epibiontes as Epistylis ssp., inside Gills and surface of the exoskeleton. The ciliated Trochilia ssp., could be observed through gills fresh mounts. We recorded the occurrence of flatworms Turbellaria Platyhelminthes and Temnocephalos Platyhelminthes as, Diceratocephala ssp, Temnocephalos ssp and Craspedella ssp., moving freely and colonizing segments and important organs of the Cherax quadricarinatus. The Redclaw crayfish analyzed were ninety, taking into account clinical signs of illness such as lethargy, paralysis, inactivity, lying on the dorsal surface and death In conclusion the most commonly observed and recorded in the specimens were flatworms 37%, Trochilia 24%, Epistylis and Cyanobacteria with 19.5%.
This study determines the presence of various pathogens that cause mortalities and other ectoparasites living as commensals without causing damage to the host. The Redclaw crayfish were collected in the reservoir Chongón, Guayas Province, during the months of July, August and September 2013. Registration of these pathogens could be possible by applying analysis techniques and fresh mounts of exoskeleton, gills, hepatopancreas, intestine, gonads and muscle Detected the presence of cyanobacteria Oscillatoria ssp., inside the intestine and Anabaena ssp.in gills. Similarly was determined the presence of ciliated epibiontes as Epistylis ssp., inside Gills and surface of the exoskeleton. The ciliated Trochilia ssp., could be observed through gills fresh mounts. We recorded the occurrence of flatworms Turbellaria Platyhelminthes and Temnocephalos Platyhelminthes as, Diceratocephala ssp, Temnocephalos ssp and Craspedella ssp., moving freely and colonizing segments and important organs of the Cherax quadricarinatus. The Redclaw crayfish analyzed were ninety, taking into account clinical signs of illness such as lethargy, paralysis, inactivity, lying on the dorsal surface and death In conclusion the most commonly observed and recorded in the specimens were flatworms 37%, Trochilia 24%, Epistylis and Cyanobacteria with 19.5%.
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TEMNOCEPHALOS, CILIADOS, CIANOBACTERIAS, CRASPEDELLA, DICERATOCEPHALA, EPISTYLIS, MONTAJES, CHONGON