Limits...
High Infestation by Dawestrema cycloancistrioides in Arapaima gigas Cultured in the Amazon Region, Peru.

Mathews PD, Malheiros AF, Vasquez ND, Chavez MD - J Vet Med (2014)

Bottom Line: The prevalence was 100%.The mean intensity and mean abundance of the parasite were 144.9 of parasites per individual.This study confirms the necessity of constant monitoring of fish in order to reduce fish mortality.

View Article: PubMed Central - PubMed

Affiliation: Department of Parasitology, Institute of Animal Biology, University of Campinas, 13083-862 Campinas, Brazil.

ABSTRACT
The aim of this study was to evaluate the presence of Dawestrema cycloancistrioides in semi-intensive fish farming of fingerlings of Arapaima gigas. Between September and November 2013, 60 individuals of A. gigas born in captivity, were collected in three concrete ponds, from a semi-intensive fish farm in the Peruvian Amazon. For the study of sclerotized structures, parasites were fixed in a solution of ammonium picrate glycerine and mounted in Canada balsam. To visualize internal structures, parasites were fixed in hot formaldehyde solution (4%) for staining with Gomori's trichrome. The parasitic indexes calculated were prevalence, mean intensity, and mean abundance. This study identified a high infestation of a monogenean D. cycloancistrioides in gills of A. gigas. The prevalence was 100%. The mean intensity and mean abundance of the parasite were 144.9 of parasites per individual. This study confirms the necessity of constant monitoring of fish in order to reduce fish mortality.

No MeSH data available.


Related in: MedlinePlus

Specimen of Arapaima gigas collected from cultured ponds.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4590877&req=5

fig1: Specimen of Arapaima gigas collected from cultured ponds.

Mentions: Between September and November 2013, the period which corresponds to the relative dry season, 60 individuals of the species A. gigas (20.40 ± 0.10 cm of length and weight of 76.06 ± 0.86 g), born in captivity (Figure 1), were collected in three concrete ponds, from a semi-intensive fish farm, belonging to the fish culture station Quistococha Research Center, located between the cities Iquitos and Nauta, northeast of Department of Loreto, Peru (3°48′48.9′′ N and 073°19′18.2′′ W). The relative humidity in this region varies between 80% and 100%. Annual rainfall ranged between 1500 and 3000 mm at 328 mean sea level.


High Infestation by Dawestrema cycloancistrioides in Arapaima gigas Cultured in the Amazon Region, Peru.

Mathews PD, Malheiros AF, Vasquez ND, Chavez MD - J Vet Med (2014)

Specimen of Arapaima gigas collected from cultured ponds.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4590877&req=5

fig1: Specimen of Arapaima gigas collected from cultured ponds.
Mentions: Between September and November 2013, the period which corresponds to the relative dry season, 60 individuals of the species A. gigas (20.40 ± 0.10 cm of length and weight of 76.06 ± 0.86 g), born in captivity (Figure 1), were collected in three concrete ponds, from a semi-intensive fish farm, belonging to the fish culture station Quistococha Research Center, located between the cities Iquitos and Nauta, northeast of Department of Loreto, Peru (3°48′48.9′′ N and 073°19′18.2′′ W). The relative humidity in this region varies between 80% and 100%. Annual rainfall ranged between 1500 and 3000 mm at 328 mean sea level.

Bottom Line: The prevalence was 100%.The mean intensity and mean abundance of the parasite were 144.9 of parasites per individual.This study confirms the necessity of constant monitoring of fish in order to reduce fish mortality.

View Article: PubMed Central - PubMed

Affiliation: Department of Parasitology, Institute of Animal Biology, University of Campinas, 13083-862 Campinas, Brazil.

ABSTRACT
The aim of this study was to evaluate the presence of Dawestrema cycloancistrioides in semi-intensive fish farming of fingerlings of Arapaima gigas. Between September and November 2013, 60 individuals of A. gigas born in captivity, were collected in three concrete ponds, from a semi-intensive fish farm in the Peruvian Amazon. For the study of sclerotized structures, parasites were fixed in a solution of ammonium picrate glycerine and mounted in Canada balsam. To visualize internal structures, parasites were fixed in hot formaldehyde solution (4%) for staining with Gomori's trichrome. The parasitic indexes calculated were prevalence, mean intensity, and mean abundance. This study identified a high infestation of a monogenean D. cycloancistrioides in gills of A. gigas. The prevalence was 100%. The mean intensity and mean abundance of the parasite were 144.9 of parasites per individual. This study confirms the necessity of constant monitoring of fish in order to reduce fish mortality.

No MeSH data available.


Related in: MedlinePlus