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  • Esox lucius  (7)
  • 1
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    Occurrence and intensity of parasites in pike (Esox lucius) in River of Chamkhaleh (2018)
    Details
    Publication Date: 2021-05-19
    Description: ABSTRACT (UNDETERMINED) Pike (Esox lucius) of Chamkhaleh River in Langrood (Iran) was studied from winter 2003 to autumn 2004. We collected 123 specimens of the fish and sent them live to the lab for examinations. Biometrical measurements, age and sex determination were conducted on the samples. The eye, skin, gill, digestive system, muscle and other organs of the specimens were examined for parasite infestation. Seven parasites: Raphidascaris acus, Camallanus lacustris, Diplostomum spathaceum, Tetraonchus monenteron, Triaenophorus crassus, Corynosoma strumosoum, Lernaea sp. were found in the pikes of the Chamkhaleh River. The most prevalent parasite was R. acus (37.39%) and the least were C. strumosum and Lernaea sp. (0.81% each). The highest mean intensity of the parasites was related to T. crassus (8.45 specimens) and the lowest was detected for Lernaea sp. (0.01). The highest range in parasite infection was seen for R. acus (1-45) and the lowest for Lernaea sp. with only one individual parasite. We observed seasonal, age and sex differences in infection rate with the parasites. This is the first time report of the pike as a host for C. strumosum.
    Description: Published
    Keywords: Tetraonchus monenteron ; Raphidascaris acus ; Diplostomum spathaceum ; Esox lucius ; Camallanus lacustris ; Corynosoma strumosoum ; Triaenophorus crassus ; Age ; Skin ; Freshwater fish ; Digestive system ; Gills ; Freshwater ; Sex determination ; Eyes ; Muscles
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.37-50
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  • 2
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    An investigation on digestive parasites of fishes in Boojagh wetland, North Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: Digestive parasites of commercial fish species in the Boojagh wetland were studied in 2002. The fish species included Esox lucius, Cyprinus carpio, Blicca bjoerkna, Tinca tinca, Carassius auratus, Rutilus frisii kutum, Rutilus rutilus and Scardinius erythrophtalmus. Species C. auratus, R. frisii kutum and B. bjoerkna were found free of digestive parasites. The other five species were carrying one of the three digestive parasites Raphidascaris aces, Caryophyllaeus fimbericeps and Asymphylodora tincae. R.acus parasite was isolated from E. lucius and E. erythrophtalmus infecting the species with a mean intensity of 1.1± 11.15 and 1.8±0.83, a prevalence of 15.4% and 20.2% and a mean abundance of 1.69 and 0.38 respectively. C. carpio and R. rutilus were only infected with C. fimbericeps parasite with a mean intensity of 30.30±46.33 and 5±0, a prevalence of 46.5% and 2.78%, and a mean abundance of 15.48 and 0.14 respectively. The parasite A. tincae was observed only in T. tinca infesting the fish with a mean intensity of 20±0, a prevalence of 25% and mean abundance of 5. Infection of Esox lucius with the parasite A. tincae had been reported from other sites, but this is the first record of Scardinius erythrophtalmus being infected with the parasite. This is also the case for infection of C. carpio with the parasite Caryophyllaeus fimbericeps which was reported before, but found infesting R. rutilus in the Boojagh wetland for the first time.
    Description: Published
    Keywords: Esox lucius ; Cyprinus carpio ; Blicca bjoerkna ; Tinca tinca ; Carassius auratus ; Rutilus frisii kutum ; Rutilus rutilus ; Scardinius erythrophtalmus ; Caryophyllaeus fimbericeps ; Asymphylodora tincae ; Scardinius erythrophtalmus ; Fish digestive parasites ; Fish ; Species ; First time
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.9-18
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  • 3
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    Unknown
    An investigation on digestive parasites of fishes in Boojagh wetland, North Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: Digestive parasites of commercial fish species in the Boojagh wetland were studied in 2002. The fish species included Esox lucius, Cyprinus carpio, Blicca bjoerkna, Tinca tinca, Carassius auratus, Rutilus frisii kutum, Rutilus rutilus and Scardinius erythrophthalmus. Species C. auratus, R. frisii kutum and B. bjoerkna were found free of digestive parasites. The other five species were carrying one of the three digestive parasites Raphidascaris acus, Caryophyllaeus fimbericeps and Asymphylodora tincae. R.acus parasite was isolated from E. lucius and E. erythrophthalmus infecting the species with a mean intensity of 11± 11.15 and 1.8±0.83, a prevalence of 15.4% and 20.2% and a mean abundance of 1.69 and 0.38 respectively. C. carpio and R. rutilus were only infected with C. fimbericeps parasite with a mean intensity of 30.30±46.33 and 5±0, a prevalence of 46.5% and 2.78%, and a mean abundance of 15.48 and 0.14 respectively. The parasite A. tincae was observed only in T.tinca infesting the fish with a mean intensity of 20±0, a prevalence of 25% and mean abundance of 5. Infection of Esox lucius with the parasite A. tincae had been reported from other sites, but this is the first record of Scardinius erythrophthalmus being infected with the parasite. This is also the case for infection of C. carpio with the parasite Caryophyllaeus fimbericeps which was reported before, but found infesting R. rutilus in the Boojagh wetland for the first time.
    Description: Published
    Keywords: Commercial ; Fish digestive parasites ; Species ; Esox lucius ; Cyprinus carpio ; Blicca bjoerkna ; Tinca tinca ; Carassius auratus ; Rutilus frisii kutum ; Rutilus rutilus ; Scardinius erythrophthalmus ; C. auratus ; R. frisii kutum ; B. bjoerkna ; Caryophyllaeus fimbericeps ; Asymphylodora tincae ; R.acus parasite ; E. lucius ; E. erythrophthalmus
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.9-18
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  • 4
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    Unknown
    Length-length, length-weight relationship and relative condition factor of pike, Esox lucius Linnaeus, 1758, in Anzali Wetland (Southwest of the Caspian Sea) (2021)
    In:  http://aquaticcommons.org/id/eprint/21737 | 18721 | 2017-11-30 03:25:09 | 21737 | University of Guilan, Faculty of Natural Resources, Iran
    Details
    Publication Date: 2021-06-30
    Description: The length-length (LLRs), length-weight (LWR) relationships and relative condition factor (Kn) of 505 specimens of pike, (Esox lucius Linnaeus, 1798) from Anzali Wetland, southwest of the Caspian Sea, were studied from April 2012 through March 2013. The length-length relationships among total length (TL), fork length (FL) and standard length (SL) for pike were found to be highly significant (r2〉0.986, P〈0.001). The values of b in length-weight relationship in males (3.1495), females (3.1843) and for all specimens (3.2137) indicated isometric growth. Mean relative condition factor for male, female and all specimens were 1.003, 1.004 and 1.008 respectively. The result of LWR could be used for fishery managers to approve appropriate regulations for sustainable fishery management. Few studies have been conducted on these parameters of pike and this is the first report on LLRs, LWR and Kn of pike from Iranian waters.
    Keywords: Biology ; Fisheries ; length ; weight ; relationship ; relative ; condition ; pike ; Esox lucius ; Anzali wetland ; Caspian Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 109-117
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  • 5
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    Unknown
    Occurrence and intensity of parasites in pike (Esox lucius) in River of Chamkhaleh (2021)
    In:  http://aquaticcommons.org/id/eprint/23643 | 18721 | 2018-07-14 23:48:04 | 23643 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-14
    Description: Pike (Esox lucius) of Chamkhaleh River in Langrood (Iran) was studied from winter 2003 to autumn 2004. We collected 123 specimens of the fish and sent them live to the lab for examinations. Biometrical measurements, age and sex determination were conducted on the samples. The eye, skin, gill, digestive system, muscle and other organs of the specimens were examined for parasite infestation. Seven parasites: Raphidascaris acus, Camallanus lacustris, Diplostomum spathaceum, Tetraonchus monenteron, Triaenophorus crassus, Corynosoma strumosoum, Lernaea sp. were found in the pikes of the Chamkhaleh River. The most prevalent parasite was R. acus (37.39%) and the least were C. strumosum and Lernaea sp. (0.81% each). The highest mean intensity of the parasites was related to T. crassus (8.45 specimens) and the lowest was detected for Lernaea sp. (0.01). The highest range in parasite infection was seen for R. acus (1-45) and the lowest for Lernaea sp. with only one individual parasite. We observed seasonal, age and sex differences in infection rate with the parasites. This is the first time report of the pike as a host for C. strumosum.
    Keywords: Fisheries ; Health ; Age ; Skin ; Freshwater fish ; Digestive system ; Gills ; Freshwater ; Sex determination ; Eyes ; Muscles ; Tetraonchus monenteron ; Raphidascaris acus ; Diplostomum spathaceum ; Esox lucius ; Camallanus lacustris ; Corynosoma strumosoum ; Triaenophorus crassus ; ISW ; Guilan Province ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 37-50
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  • 6
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    Unknown
    Prevalence and intensity of parasites in pike (Esox lucius) from Anzali Wetland and evaluation of their impacts on biometric characticties in host fish (2020)
    Details
    Publication Date: 2021-05-19
    Description: Parasite communities of pike (Esox lucius L. 1758) were calculated in Anzali Wetland along with evaluating their impacts on biometric characticties of the fish host. A total of 4338 parasites from 11 diferent species were identified including: Ichthyophthirius mutifiliis (21.88%); Trichodina sp. (8.59%); Henneguya sp. (0.78%); Tetraonchus monenteron (60.94%); Diplostomum spathaceum (23.44%); Rhipidocotyle illense (9.37%); Posthodiplostomum cuticola (0.78%); Raphidascaris acus (41.41%); Rhabdochona helichi (8.59%); Eustrongylides excisus (2.34%) and Lernea cyprinacea (3.13%). The occurrence of P.cuticola in E. lucius is reported for the first time from Anzali Wetland. By increasing total length, the average weight of the infected fish raised from 26.54 ± 12.94 g to 472.39 ± 68.38 g, the condition factor (K) from 0.64 ± 0.11 to 0.66 ± 0.06 and the gonadosomatic index (GSR) from 0.15±0.55 to 0.75±1.88. In healthy fish, the instantaneous growth rate (G) in the age groups of 1+ to 0+ years old was higher (0.617) than in the other groups, while in infected fish, the instantaneous growth factor had fluctuations in different age groups. On the other hand, the age groups of 3+ to 2+ years old had the highest growth rate (0.773). There were significant differences between the prevalence of parasites and some biometric characticties in infected fish (p〈0.05).
    Description: Published
    Keywords: Esox lucius ; Parasitic infections ; Fish ; Biometric characticties ; growth rate
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.69-78
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  • 7
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    Unknown
    Length- length, length -weight relationship and relative condition factor of pike, Esox lucius Linnaeus, 1758, in Anzali Wetland (Southwest of the Caspian Sea) (2017)
    Details
    Publication Date: 2021-05-19
    Description: The length- length (LLRs), length-weight (LWR) relationships and relative condition factor (Kn) of 505 specimens of pike, (Esox lucius Linnaeus, 1798) from Anzali Wetland, southwest of the Caspian Sea, were studied from April 2012 through March 2013. The length-length relationships among total length (TL), fork length (FL) and standard length (SL) for pike were found to be highly significant (r2〉0.986, P〈0.001). The values of b in length-weight relationship in males (3.1495), females (3.1843) and for all specimens (3.2137) indicated isometric growth. Mean relative condition factor for male, female and all specimens were 1.003, 1.004 and 1.008 respectively. The result of LWR could be used for fishery managers to approve appropriate regulations for sustainable fishery management. Few studies have been conducted on these parameters of pike and this is the first report on LLRs, LWR and Kn of pike from Iranian waters.
    Description: Published
    Keywords: Relationships ; Esox lucius ; Length-weight relationship ; Condition factor ; Anzali Lagoon ; Length ; Weight
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.109-117
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