FIRST RECORD OF Neoergasilus japonicus (HARADA, 1930) (COPEPODA: CYCLOPOIDA) INFECTING A FISH SPECIES IN SOUTH AMERICA

Marques, Taísa Mendes; Morey, Germán Augusto Murrieta

doi:10.24841/fa.v27i1.460

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…It was originally described from Asia, 536 but Hudson and Bowen 537 noted that it spread through aquaculture and the aquarium trade over 20 years. Its occurrence is recorded in Alabama, USA, 538 Cuba, 539 Mexico, 540 Peru 541 and South Africa 542 . It displays little host specificity and has been recorded from a wide variety of freshwater fish including cyprinids, percids, centrarchids, ictalurids and cichlids.…”

Section: Parasitic Infections Of Tilapiamentioning

confidence: 99%

A global review of problematic and pathogenic parasites of farmed tilapia

Shinn

Avenant‐Oldewage

Bondad‐Reantaso

et al. 2023

Reviews in Aquaculture

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Over the past 80 years, tilapia have been translocated globally for aquaculture; active production is recorded in >124 countries. Of 7 million tonnes of tilapia produced in aquaculture, 79% is from 79 countries outside the natural range of tilapia. Capture fisheries account for a further 723,627 tonnes of tilapia, and >47% of this is landed from established invasive populations outside Africa. Tilapias host a rich fauna of parasites, many of which have been translocated with their hosts. This review summarises >2500 host–parasite records from 73+ countries and >820 recorded tilapia translocations (provided in the supplementary materials). This work focuses on the notable pathogens that threaten the health of cultured populations of tilapia, providing a description of their pathology and includes species that also have substantial impacts on wild tilapia populations, where relevant. For each major parasite taxonomic group, we highlight which parasites have been translocated or have been acquired from the new environments into which tilapia have been introduced, together with remarks on standard treatment approaches and research on them and their management and control. Regarding the theme ‘Tilapia health: quo vadis?’, Africa has enormous potential for aquaculture growth, but substantial knowledge gaps about tilapia parasites in many African states remain, which creates associated production and biosecurity risks. For each parasitic group, therefore, the risks of parasite translocation to new regions as tilapia aquaculture industries expand are highlighted.

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Section: Parasitic Infections Of Tilapiamentioning

confidence: 99%

A global review of problematic and pathogenic parasites of farmed tilapia

Shinn

Avenant‐Oldewage

Bondad‐Reantaso

et al. 2023

Reviews in Aquaculture

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“…After that, it was reported from various regions of the world, including eastern Asia (China, Korea, Russian Far East and Japan), southern Asia (Vietnam and India), Europe (UK, France, Germany, Italy, Czech Republic, Slovak Republic, Hungary, Ukraine, Finland and Russia), North America (USA and Mexico) and the Caribbean (Cuba) (summarized in Nagasawa & Uyeno, 2012). It was also reported in Turkey (Soylu & Soylu, 2012) and more recently spreading further north to New York State, USA (Marshall et al, 2019) and in Peru, South America (Mendes‐Marques & Murrieta‐Morey, 2018).…”

Section: Introductionmentioning

confidence: 82%

Pathology caused by introduced Neoergasilus japonicus (Copepoda: Ergasilidae) to the skin of indigenous Tilapia sparrmanii in South Africa and scanning electron microscopy study of wound‐inflicting structures

Avenant‐Oldewage,

Nagasawa,

Dos Santos

et al. 2023

Journal of Fish Diseases

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Neoergasilus japonicus, a fish ectoparasite indigenous to eastern and southern Asia, has been introduced to various regions, including Europe and North and South America, where it spreads at an alarming rate. The parasite is not host‐specific. It was also collected from the Vaal‐Orange and Limpopo river systems in South Africa. This report describes the morphology of the wound‐inflecting structures in N. japonicus and relates their morphology to the pathological effect on Tilapia sparrmanii. Host tissue with parasites attached was imbedded in resin for histological sectioning and stained with haematoxylin and eosin. Additional specimens were prepared for scanning electron microscopy. Adult female parasites attach by inserting the hooked tips of the antennae into the epidermis. The maxillulae are minute but have sharp tips. The maxillae have sharp tips on the endopod and brush‐like setae on the exopod. The mandibles are armed with sharp tips. These structures are used to remove the epidermis of the host and brush it into the buccal cavity. Host tissue in the intestine confirms that adult females consume host tissue leaving the dermis exposed to opportunistic diseases. The microscopic size of the parasite prevents casual observation, and its occurrence in Africa is, therefore, probably underreported.

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Distribution and host range of a highly invasive parasitic copepod

Ondračková,

Tkachenko,

Vetešník

et al. 2024

Hydrobiologia

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The parasitic copepod Neoergasilus japonicus (Ergasilidae), native to East Asia, has spread rapidly around the world over the past half-century and now represents a clear example of successful parasitic invader. The species is now found in western Asia, Europe, America and Africa, with aquaculture and fish introductions identified as the primary vectors of dispersal. Regional field investigations have revealed surprisingly high number of affected localities, indicating potentially wider distribution than currently recognised. Neoergasilus japonicus exhibits low host specificity, parasitising a diverse range of freshwater fishes. This study updates the global fish host species list to 132, spanning 27 families across 15 orders, with Cypriniformes identified as the most susceptible host species. Under experimental conditions in this study, however, N. japonicus avoided its natural host, topmouth gudgeon Pseudorasbora parva, suggesting a level of resistance to its native parasite. Piscivorous and demersal fish were less infected by copepods than planktivorous, benthivorous, pelagic and benthopelagic species, reflecting the ecology of both the parasite and its hosts. An ability to re-attach to another host, though limited, was confirmed under experimental conditions. Recognising the ecological impacts and potential consequences associated with the introduction of non-native parasites emphasises the need for continuous monitoring and research globally.

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FIRST RECORD OF Neoergasilus japonicus (HARADA, 1930) (COPEPODA: CYCLOPOIDA) INFECTING A FISH SPECIES IN SOUTH AMERICA

Cited by 4 publications

References 14 publications

A global review of problematic and pathogenic parasites of farmed tilapia

A global review of problematic and pathogenic parasites of farmed tilapia

Pathology caused by introduced Neoergasilus japonicus (Copepoda: Ergasilidae) to the skin of indigenous Tilapia sparrmanii in South Africa and scanning electron microscopy study of wound‐inflicting structures

Distribution and host range of a highly invasive parasitic copepod

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