First record of Neobenedenia “melleni” – like species (Monogenea: Capsalidae) in Goliath grouper Epinephelus itajara in Brazil

Silva, Francisco da Costa; Leite, Jonas Rodrigues; Hostim‐Silva, Maurício; Valença, Anita Rademaker; Sanches, Eduardo Gomes

doi:10.1590/s1984-29612014025

Cited by 9 publications

(5 citation statements)

References 10 publications

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“…Monogenoids parasites recorded in Brazil, Neobenedenia melleni in particular, have been known to cause losses, like partial or total mortality of the cultured individuals (KERBER et al, 2011;SILVA et al, 2014). A study on the occurrence of monogenoids and the proposition of treatments in cultured marine fishes is still incipient and there are few articles published for Lutjanidae (LIANG et al, 1992;FAJER-ÁVILA et al, 2007;DEL RIO-ZARAGOZA et al, 2010;DEL RIO-ZARAGOZA et al, 2011).…”

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confidence: 99%

Levamisole on the biochemical and hematological responses to parasitism by monogenoids in dog snapper

et al. 2019

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The response of biochemical and hematological parameters were analyzed in dog snapper (Lutjanus jocu) grown in net cages, as well as for the specimens kept in the laboratory during an infestation by Neobenedenia melleni, and after treatment with freshwater bath and injectable application of levamisole. Significant changes were observed in N. melleni parasitized individuals, characterized by increased glucose and lactate levels, as well as a significant fish hematocrit reduction and leukocyte increase. Treatment with freshwater baths, concomitant with injectable levamisole application, showed therapeutic efficacy in several parameters after 14 days of treatment.

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confidence: 99%

Levamisole on the biochemical and hematological responses to parasitism by monogenoids in dog snapper

et al. 2019

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“…The attacked fish were then isolated in a tank containing fresh water which had been mixed with a cefotaxime medicine. Another way that has been successfully recognized in controlling the parasites of Goliath grouper (Epinephelus itajara) is by bathing the fish using freshwater over five minutes (Silva et al, 2014). The attacked fish were injected prior before it was released back into the FNC in order to be getting healthy again, no limping, and its appetite increased.…”

Section: Resultsmentioning

confidence: 99%

Ectoparasite Prevalences of Grouper Fish (Epinephelus fuscogutatus x Epinephelus polyphekadion) Cultured in Floating Net Cages

2020

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Monitoring the health of the reared fish in a floating net cage (FNC) is often conducted by examining their ectoparasites. This study determines ectoparasite prevalences of grouper fish (Epinephelus fuscogutatus x E. polyphekadion). It was conducted in the waters surrounding Pongok Island, South Bangka Regency. The health examination of both fish and ectoparasites was carried out by applying simple random sampling during three periods, November 2016 (I), February 2017 (II) and May 2017 (III). Hydro-oceanography surveys were done every month during the three years. The grouper checkings (I, II and III) indicated the prevalences of ectoparasites in these periods were 43.3%, 8.8% and 13.5%, respectively. Fish death highly occurred in the period I, and the grouper survival rate at harvesting time was only 70% from initial seed stocking of 1,500 fish. The ectoparasite intensities during the research periods were 1.6, 1.6 and 1.5, respectively. This condition implies that every 10 groupers would potentially be attacked by at least 15-16 ectoparasites. A slow seawater current flow triggered the quick uplifting of the ectoparasites from the seafloor. The water condition at the FNC location in 2011 and 2017 was still under the quality standard. The ectoparasites were coming from the surrounding environment of the FNC location. It is inevitable that the fish culture management should focus on cleansing the ectoparasites attaching on the groupers, dusting the net cage clean, and arranging the harvest pattern on a particular month following the surrounding environmental condition to prevent ectoparasite attacks.

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“…In Brazil, the fish population declined by the degradation of their mangrove habitat and missing ecological data as well as the lack of knowledge about captive measures for this species. For that, a regulation was enacted from 2002 to 2015 which forbids fishing of Goliath groupers E. itajara and turned this species in to the first marine fish species to have an individual regulation in Brazilian waters (Silva et al, 2014). Efforts for species preservation have been carried out such as the project "Meros do Brasil".…”

Section: Introductionmentioning

confidence: 99%

Sanitary conditions of the Goliath grouper Epinephelus itajara in captivity on estuarine environment: case report

Paixão

Sousa

Couto

et al. 2020

Arq. Bras. Med. Vet. Zootec.

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This study aimed to report the sanitary conditions through the hematological analysis of grouper E. itajara reared in captivity on estuarine conditions. Seven Goliath groupers (1,881.5±1,246.03g) were captured and kept in two tanks located on estuary. After 20 days, fish were collected for morphologic and hemato-physiologic evaluation. Two fish had clinical signs such as hemorrhagic spots and loss of scale due to agonistic behavior. Blood samples were collected, and the hematological parameters (biochemical, erythrogram and leukogram) were determined. Blood cells were characterized by their size, color and shape. Univariate statistic and principal components analysis were used to identify a hematological standard between fish with or without clinical signs. Four leukocyte types were found: lymphocyte, monocyte, neutrophil and basophil. Regardless of the clinical signs the cell morphology did not present any difference among the fish. However, there is a significant correlation between erythrocyte and lactate on fish with clinical signs. Thus, agonistics encountered among the fish is a stressing factor in captivity conditions making it necessary to have adequate management related to the size of fish and stocking density.

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First record of Neobenedenia “melleni” – like species (Monogenea: Capsalidae) in Goliath grouper Epinephelus itajara in Brazil

Cited by 9 publications

References 10 publications

Levamisole on the biochemical and hematological responses to parasitism by monogenoids in dog snapper

Levamisole on the biochemical and hematological responses to parasitism by monogenoids in dog snapper

Ectoparasite Prevalences of Grouper Fish (Epinephelus fuscogutatus x Epinephelus polyphekadion) Cultured in Floating Net Cages

Sanitary conditions of the Goliath grouper Epinephelus itajara in captivity on estuarine environment: case report

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