Helmintofauna presente en tres especies de peces marinos comerciales en la parroquia Puerto El Morro-Guayaquil-Ecuador
Fecha
2021-09
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
Los estudios helmintológicos en peces marinos son importantes debido a que el conocimiento de la relación parásito-hospedero permite establecer medidas que permitan prevenir, controlar y erradicar las parasitosis y sus efectos. Por lo tanto, el objetivo de esta investigación fue evaluar la helmintofauna presente de Mugil cephalus, Pomadasys macracanthus, Galeichthys peruvianus, en la parroquia Puerto el Morro, Guayaquil; entre enero y junio del 2021. Para ello se examinaron 550 individuos de tres especies de peces, donde se encontraron cinco especies de parásitos, entre ellos, nematodos (Cucullanus sp., Procamallanus cf ashouri, Contracaecum sp,
Hysterothylacium sp.) y acantocéfalo (Floridosentis mugilis). Los parásitos fueron hallados en el intestino, sin embargo, se reportó la presencia de Contracaecum sp., a nivel intramuscular en
M. cephalus. Floridosentis mugilis estuvo presente en las tres especies de peces, no obstante,
M. cephalus presentó la mayor prevalencia (39.38 %), seguido de Contracaecum sp. (6.88 %). Además, se evidenció una dominancia acantocéfalos machos (64.03 %) sobre hembras (35.97 %) en M. cephalus. Todos los peces presentaron una alta dominancia y una baja diversidad. De igual manera, no se determinó relación entre los parámetros biométricos y la abundancia parasitaria.
Helminthological studies in marine fish are important because knowledge of the parasite-host relationship allows the establishment of measures to prevent, control and eradicate parasitosis and its effects. Therefore, the objective of this research was to evaluate the helminthofauna present in Mugil cephalus, Pomadasys macracanthus, Galeichthys peruvianus, in the parish of Puerto el Morro, Guayaquil; between January and June 2021. For this purpose, 550 individuals of three species of fish were examined, where five species of parasites were found, including nematodes (Cucullanus sp., Procamallanus cf ashouri, Contracaecum sp, Hysterothylacium sp.) and acanthocephalus (Floridosentis mugilis). The parasites were found in the intestine, however, the presence of Contracaecum sp. was reported at intramuscular level in M. cephalus. Floridosentis mugilis was present in all three fish species, however, M. cephalus presented the highest prevalence (39.38 %), followed by Contracaecum sp. (6.88 %). In addition, a dominance of male acanthocephalans (64.03 %) over females (35.97 %) was evident in M. cephalus. All fish showed high dominance and low diversity. Similarly, no relationship between biometric parameters and parasitic abundance was determined.
Helminthological studies in marine fish are important because knowledge of the parasite-host relationship allows the establishment of measures to prevent, control and eradicate parasitosis and its effects. Therefore, the objective of this research was to evaluate the helminthofauna present in Mugil cephalus, Pomadasys macracanthus, Galeichthys peruvianus, in the parish of Puerto el Morro, Guayaquil; between January and June 2021. For this purpose, 550 individuals of three species of fish were examined, where five species of parasites were found, including nematodes (Cucullanus sp., Procamallanus cf ashouri, Contracaecum sp, Hysterothylacium sp.) and acanthocephalus (Floridosentis mugilis). The parasites were found in the intestine, however, the presence of Contracaecum sp. was reported at intramuscular level in M. cephalus. Floridosentis mugilis was present in all three fish species, however, M. cephalus presented the highest prevalence (39.38 %), followed by Contracaecum sp. (6.88 %). In addition, a dominance of male acanthocephalans (64.03 %) over females (35.97 %) was evident in M. cephalus. All fish showed high dominance and low diversity. Similarly, no relationship between biometric parameters and parasitic abundance was determined.
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Palabras clave
HELMINTOFAUNA, PECES MARINOS, PREVALENCIA, PARASITISMO