颊腔寄生虫 Ceratothoa carinata(等足目,鲤科)对宿主鱼日本鳞鯵的状态和繁殖的影响。

IF 1.1 4区 农林科学 Q3 FISHERIES
Reina Nakano, Yuzumi Okumura, Hiroki Hata
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引用次数: 0

摘要

鲤形目(Cymothoidae)等足目科的所有物种都是鱼类的寄生虫,通过食血和消耗组织来获取营养。为了阐明这种寄生关系对宿主鱼类的有害影响,我们研究了不同季节感染颊腔寄生虫Ceratothoa carinata的日本鲭(Decapterus maruadsi)的体长、体重、性腺、肝脏和胃内容物以及状态因子。在 7 月宿主鱼的繁殖季节,1、2 龄雌雄宿主鱼的湿重和体质指数明显下降。在繁殖季节过后的 9 月份,没有发现任何影响。我们没有发现寄生虫对胃内容物重量或胃中猎物鱼的迹象有任何影响。因此,寄生虫感染 C. carinata 可能会对宿主的生理状况产生负面影响,从而降低宿主鱼的繁殖成功率,尤其是在繁殖季节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of buccal cavity parasite Ceratothoa carinata (Isopoda, Cymothoidae) on the condition and reproduction of its host fish Japanese scad Decapterus maruadsi.

All species of the isopod family Cymothoidae are obligate fish parasites, extracting nourishment through hematophagy and tissue consumption. To elucidate the detrimental effects of this parasitic relationship upon the host fish, we examined body length, weight of body, gonad, liver and stomach contents, and condition factor of Japanese scad Decapterus maruadsi infected with the buccal cavity parasite Ceratothoa carinata in different seasons. During the host fish's breeding season in July, the wet weight and condition factor of male and female host fish ages 1 and 2 were conspicuously diminished. No impacts were detected in September, after the breeding season. We found no impact of the parasite on the stomach content weight or signs of prey fish in the stomachs. Thus, parasite infection with C. carinata potentially diminishes the reproductive success of the host fish by negatively impacting the host's physiological condition, particularly during the breeding season.

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来源期刊
Diseases of aquatic organisms
Diseases of aquatic organisms 农林科学-兽医学
CiteScore
3.10
自引率
0.00%
发文量
53
审稿时长
8-16 weeks
期刊介绍: DAO publishes Research Articles, Reviews, and Notes, as well as Comments/Reply Comments (for details see DAO 48:161), Theme Sections and Opinion Pieces. For details consult the Guidelines for Authors. Papers may cover all forms of life - animals, plants and microorganisms - in marine, limnetic and brackish habitats. DAO''s scope includes any research focusing on diseases in aquatic organisms, specifically: -Diseases caused by coexisting organisms, e.g. viruses, bacteria, fungi, protistans, metazoans; characterization of pathogens -Diseases caused by abiotic factors (critical intensities of environmental properties, including pollution)- Diseases due to internal circumstances (innate, idiopathic, genetic)- Diseases due to proliferative disorders (neoplasms)- Disease diagnosis, treatment and prevention- Molecular aspects of diseases- Nutritional disorders- Stress and physical injuries- Epidemiology/epizootiology- Parasitology- Toxicology- Diseases of aquatic organisms affecting human health and well-being (with the focus on the aquatic organism)- Diseases as indicators of humanity''s detrimental impact on nature- Genomics, proteomics and metabolomics of disease- Immunology and disease prevention- Animal welfare- Zoonosis
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