Effects of the gill parasite Zeuxapta seriolae (Monogenea: Heteraxinidae) on the amberjack Seriola dumerili Risso (Teleostei: Carangidae)

Montero, Francisco E.; Crespo, S.; Padrós, Francesc; Gándara, Fernando de la; Garcia, A. R.; Raga, Juan Antonio

doi:10.1016/s0044-8486(03)00536-2

Cited by 75 publications

(75 citation statements)

References 13 publications

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“…However, this slight increase differs from that reported by Montero et al (2004). It also differs from the results reported by Paiva and Tavares-Dias (2002) for the marine fish Mugil platanus infected by Trichodina, Monogenea, Copepodes and Hirudinea, probably because this fish species was infested by parasites other than Monogenea and lived in an estuary region.…”

Section: Discussioncontrasting

confidence: 90%

Hematological parameters of Hoplias malabaricus (Characiformes: Erythrinidae) parasitized by Monogenea in lagoons in Pirassununga, Brazil

Corrêa

Karling

Takemoto

et al. 2013

Rev. Bras. Parasitol. Vet.

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Hematology is an important pathological and diagnostic tool. This paper describes the hematological parameters of 76 specimens of Hoplias malabaricus infested with monogenean parasites, which were collected from two lagoons. The hematological parameters included: erythrocyte count (Er), microhematocrit (Hct), hemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). The blood parameters showed no significant changes associated with the infestation. Water temperature was found to be negatively correlated with MCV and Hct, with values of r s = -0.52, p<0.0001 and r s = -0.48, p<0.0001, respectively. The mean Relative Condition Factor was Kn=1.01, indicating good health conditions of the fish in these lagoons. No correlation was found between the monogenean infestation and the blood parameters, or between the environmental factors and the monogeneans.Keywords: Parasites, blood cells, freshwater fish. ResumoA hematologia é uma importante ferramenta para patologia e diagnóstico. O presente estudo teve como objetivo descrever os parâmetros hematológicos de 76 espécimes de Hoplias malabaricus, coletados em duas lagoas, associados ao parasitismo por monogenético. Os parâmetros hematológicos foram: contagem de eritrócitos (Er), micro hematócrito (Hct), hemoglobina (Hb), volume corpuscular médio (VCM), hemoglobina corpuscular (HCM) e a concentração da hemoglobina cospuscular média (CHCM). Observou-se que não ocorreram mudanças significativas nos parâmetros sanguíneos relacionados com o parasitismo. Houve uma correlação negativa entre a temperatura da água o VCM e Hct, com valores de r s = -0,52, p<0,0001 e r s = -0,48, p<0,0001, respectivamente. O valor médio entre o fator de condição relativo foi de Kn = 1,01, indicando boas condições e os peixes estavam saudáveis nas lagoas estudadas. Não houve relação entre a infestação de monogeneas e os parâmetros sanguíneos, ou entre os fatores ambientais e as monogeneas.Palavras-chave: Parasitas, células sanguíneas, peixes de água doce.

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Section: Discussioncontrasting

confidence: 90%

Hematological parameters of Hoplias malabaricus (Characiformes: Erythrinidae) parasitized by Monogenea in lagoons in Pirassununga, Brazil

Corrêa

Karling

Takemoto

et al. 2013

Rev. Bras. Parasitol. Vet.

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“…High infection intensities of this parasite species are associated with host anaemia, which is characterized by low haematocrit and haemoglobin levels (Ogawa and Inouye, 1997). Infection intensity of Z. seriolae was also negatively associated with haematocrit and haemoglobin levels in S. dumerili (see Montero and Crespo, 2004) and S. lalandi (see Mansell et al 2005) respectively. Host anaemia in X. laevis was suggested to have lowered egg output in P. xenopodis (Jackson, 1983(Jackson, , 1984.…”

Section: Fig 2 Daily Pattern Of Egg Release In Vivo For (A)mentioning

confidence: 99%

Egg-laying patterns and in vivo egg production in the monogenean parasites Heteraxine heterocerca and Benedenia seriolae from Japanese yellowtail Seriola quinqueradiata

2008

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SUMMARYEgg-laying patterns and egg production in Heteraxine heterocerca from the gills and Benedenia seriolae from the skin of Japanese yellowtail Seriola quinqueradiata in Japan were investigated in vivo. Eggs were collected every 3 h from sexually mature H. heterocerca and B. seriolae infecting 3 S. quinqueradiata kept individually over 3 consecutive days and exposed to alternating periods of illumination and darkness (LD 12:12; light on 06.00, light off 18.00) and maintained at 23·8±0·1°C and 35 ppt salinity. A well-defined egg-laying rhythm was demonstrated for H. heterocerca while B. seriolae was shown to release eggs continuously. A total of 114 000 H. heterocerca eggs was collected and of these, 45·4 (42·5–49·9)% were collected during the first 3 h period following dark at 18.00 h. A total of 662 857 B. seriolae eggs was collected and these were distributed over each 3 h period ranging from 11·1 to 14·1% of the daily egg output. All eggs extracted from the uterus of each H. heterocerca were joined together forming an ‘egg-string’. The contrasting egg-laying patterns of H. heterocerca and B. seriolae suggest that each species makes use of a different infection strategy to infect the same host species, S. quinqueradiata.

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“…Praziquantel (PZQ: 2-cyclohexylcarbonyl-1, 2, 3, 6, 7, 11b-hexahydro-4H-pyrazino [2,1-a] iso-quinoline-4-one) is a broad-spectrum anthelmintic drug used in human and veterinary medicine. In aquaculture, PZQ is mainly used for controlling and killing acanthocephalans (Paterson et al 2013), trematodes (Kim & Cho 2000, Montero et al 2004, Mansell et al 2005, Reimschuessel et al 2011, cestodes (Pool 1985, Kline et al 2009, Iles et al 2012, and other parasites of fish. Although PZQ is applied widely in the treatment of aquatic animals, only a few studies have examined the pharmacokinetics and tissue residues of PZQ in fish (K. Kim et al 2001, C. Kim et al 2003, Tubbs & Tingle 2006a,b, Osman et al 2008, Xie et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Pharmacokinetics and residue depletion of praziquantel in rice field eels Monopterus albus

Dong²,

Yang³

et al. 2016

Dis. Aquat. Org.

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We investigated the pharmacokinetic characteristics of praziquantel (PZQ) in rice field eels Monopterus albus. Pharmacokinetic parameters were determined following a single intravenous administration (5 mg kg −1 body weight [bw]) and a single oral administration (10 mg kg −1 bw) at 22.0 ± 0.7°C. We also evaluated residue depletion in tissues following daily administration of PZQ (10 mg kg −1 bw) that was given orally for 3 consecutive days at 22.0 ± 0.7°C. Following intravenous treatment, the plasma concentration−time curve was best described by a 3-compartment open model, with distribution half-life (t 1/2α ), elimination half-life (t 1/2β ), and area under the concentration−time curve (AUC) of 0.54 h, 17.10 h, and 14505.12 h µg l −1 , respectively. After oral administration, the plasma concentration−time curve was best described by a 1-compartment open model with first-order absorption, with absorption half-life (t 1/2Ka ), elimination halflife (t 1/2Ke ), peak concentration (C max ), time-to-peak concentration (T max ), and AUC estimated to be 2.28 h, 6.66 h, 361.29 µg l , respectively. The oral bioavailability (F ) was 20.9%. With respect to residue depletion of PZQ, the t 1/2β values of muscle, skin, liver, and kidney were 20.2, 28.4, 14.9, and 54.1 h, respectively. Our results indicated rapid absorption, rapid elimination, and low bioavailability of PZQ in rice field eels at the tested dosing conditions.

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Effects of the gill parasite Zeuxapta seriolae (Monogenea: Heteraxinidae) on the amberjack Seriola dumerili Risso (Teleostei: Carangidae)

Cited by 75 publications

References 13 publications

Hematological parameters of Hoplias malabaricus (Characiformes: Erythrinidae) parasitized by Monogenea in lagoons in Pirassununga, Brazil

Hematological parameters of Hoplias malabaricus (Characiformes: Erythrinidae) parasitized by Monogenea in lagoons in Pirassununga, Brazil

Egg-laying patterns and in vivo egg production in the monogenean parasites Heteraxine heterocerca and Benedenia seriolae from Japanese yellowtail Seriola quinqueradiata

Pharmacokinetics and residue depletion of praziquantel in rice field eels Monopterus albus

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