Infestation of the Pacific cod Gadus macrocephalus by the parasitic copepod Haemobaphes diceraus (Copepoda: Pennellidae) at the eastern coast of the northern Kuril Islands and Southeast Kamchatka

Abstract Background: IgE reactivity to fish allergens in atopic dogs, which are used as models for food allergy, has not been elucidated to date. We investigated IgE reactivity to crude extracts and purified allergens derived from the Pacific cod (Gadus macrocephalus) in atopic dogs to identify the allergenic proteins of cod.Results: The levels of specific IgE to crude cod extracts were measured in the sera of 179 atopic dogs, including 27 dogs with cod allergy, using enzyme-linked immunosorbent assay (ELISA). Specific IgE to crude cod extracts were present in 36 (20%) of the 179 atopic dogs and in 12 (44%) of the 27 dogs with cod allergy. The allergens in crude cod extracts were analyzed by ELISA, immunoblotting, and liquid chromatography-tandem mass spectrometry. In allergen component analysis, IgE reactivity to tropomyosin and enolase was observed in the sera of dogs with cod allergy. IgE reactivity to parvalbumin, collagen, and tropomyosin was evaluated using the sera of atopic dogs that tested positive for specific IgE to crude cod extracts. Among the 36 dogs with IgE reactivity to crude cod extracts, 9 (25%), 14 (39%), and 18 (50%) dogs tested positive for specific IgE to parvalbumin, collagen, and tropomyosin, respectively.Conclusions: The IgE reactivity to cod allergens observed in dogs was similar to that in humans, and this finding further supports the use of atopic dogs with fish allergy as a model for fish allergy in humans.

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Biology and Management of Dogfish Sharks

Biology and Management of Dogfish Sharks ◽

10.47886/9781934874073.ch11 ◽

2009 ◽

Keyword(s):

Kuril Islands ◽

Spiny Dogfish ◽

Depth Range ◽

Southeastern Kamchatka ◽

Pacific Waters ◽

The Pacific ◽

Body Weights ◽

Northern Kuril Islands ◽

Catch Rates ◽

The Northern Kuril Islands

Abstract.—Spiny dogfish Squalus acanthias are occasionally caught by bottom trawls in the Pacific waters off the northern Kuril Islands and southeastern Kamchatka. Only 23 specimens were captured during 8 years of commercial and research cruise observations from 1993 to 2000. This species occurred most frequently off the southeastern coast of Kamchatka within a depth range of 200–300 m and a bottom temperature range of 2°–3°C. In the study area, this shark was represented by specimens with total lengths of 54–85 cm (69.2 cm average) and body weights of 1–3 kg (1.8 kg average). Dogfish were captured in the Pacific waters off the northern Kuril Islands and southeastern Kamchatka from July to December. Maximum catch rates occurred in November and were probably related to southward migrations.

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Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries

Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries ◽

10.47886/9781934874004.ch16 ◽

2008 ◽

Keyword(s):

Stock Assessment ◽

Kuril Islands ◽

Southeastern Kamchatka ◽

The Pacific ◽

Vertical Distributions ◽

Northern Kuril Islands ◽

Different Seasons ◽

By Catch ◽

Catch Rates ◽

The Northern Kuril Islands

Abstract.—The giant grenadier Albatrossia pectoralis and popeye grenadier Coryphaenoides cinereus are among the most abundant continental slope fish species of the North Pacific. Their high biomass constitutes about 2 million metric tons and they comprise a large portion of by-catch in deepwater bottom trawl and longline fisheries. However, these species are mostly discarded and their specialized fisheries are currently only in the initial stage. The ecology and biology of giant and popeye grenadiers in the Pacific off the northern Kuril Islands and southeastern Kamchatka are still poorly understood. This paper is based on results of studies conducted in 1992–2002 aboard Japanese trawlers in the Pacific waters off the northern Kuril Islands and southeastern Kamchatka. It describes seasonal changes of spatial and vertical distributions and bottom temperature preferences, provides data on their lengths and weights, length-weight relationships, sex ratios, and multi-annual, seasonal, and diurnal variations of catch rates. Relationships between mean body weight and capture depth are presented for different seasons. Data on composition of species co-occurring in catches are given for both grenadiers in respect to different times of year.

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IgE reactivity to fish allergens from Pacific cod (Gadus macrocephalus) in atopic dogs

BMC Veterinary Research ◽

10.1186/s12917-020-02559-1 ◽

2020 ◽

Vol 16 (1) ◽

Author(s):

Ichiro Imanishi ◽

Jumpei Uchiyama ◽

Keijiro Mizukami ◽

Junichi Kamiie ◽

Keigo Kurata ◽

...

Keyword(s):

Specific Ige ◽

Enzyme Linked Immunosorbent Assay ◽

Pacific Cod ◽

Fish Allergy ◽

Ige Reactivity ◽

Pacific Cod Gadus Macrocephalus ◽

Gadus Macrocephalus ◽

The Pacific ◽

Allergenic Proteins ◽

Liquid Chromatography Tandem Mass

Abstract Background IgE reactivity to fish allergens in atopic dogs, which are used as models for food allergy, has not been elucidated to date. We investigated IgE reactivity to crude extracts and purified allergens derived from the Pacific cod (Gadus macrocephalus) in atopic dogs to identify the allergenic proteins of cod. Results The levels of specific IgE to crude cod extracts were measured in the sera of 179 atopic dogs, including 27 dogs with cod allergy, using enzyme-linked immunosorbent assay (ELISA). Specific IgE to crude cod extracts were present in 36 (20%) of the 179 atopic dogs and in 12 (44%) of the 27 dogs with cod allergy. The allergens in crude cod extracts were analyzed by ELISA, immunoblotting, and liquid chromatography-tandem mass spectrometry. In allergen component analysis, IgE reactivity to tropomyosin and enolase was observed in the sera of dogs with cod allergy. IgE reactivity to parvalbumin, collagen, and tropomyosin was evaluated using the sera of atopic dogs that tested positive for specific IgE to crude cod extracts. Among the 36 dogs with IgE reactivity to crude cod extracts, 9 (25%), 14 (39%), and 18 (50%) dogs tested positive for specific IgE to parvalbumin, collagen, and tropomyosin, respectively. Conclusions The IgE reactivity to cod allergens observed in dogs was similar to that in humans, and this finding further supports the use of atopic dogs with fish allergy as a model for fish allergy in humans.

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