Impact of<i>Lernaea cyprinacea</i>Linnaeus 1758 (Crustacea : Copepoda) almost a decade after an initial parasitic outbreak in fish of Malilangwe Reservoir, Zimbabwe

Dalu, Tatenda; Nhiwatiwa, Tamuka; Clegg, Bruce; Barson, Maxwell

doi:10.1051/kmae/2012020

Cited by 12 publications

(15 citation statements)

References 12 publications

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“…Although occurring sympatrically with infected fishes, gobioid fishes were often not infested by L. cyprinacea (e.g. Kritscher, 1975;Kvach, 2004;Dalu et al, 2012;Krasnovyd et al, 2012;Kvach et al, 2014Kvach et al, , 2015Zhokhov et al, 2017) (Tab. S1).…”

Section: Discussionmentioning

confidence: 99%

First report of the parasitic copepod Lernaea cyprinacea (Copepoda: Lernaeidae) on gobioid fishes (Teleostei: Gobonellidae) in southern Europe

Ahnelt

Konecny

Gabriel

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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Lernaea cyprinacea is a non host-specific parasitic copepod known to infest many freshwater fish species. Outbreaks of infestations by this ectoparasite may cause mass mortality of parasitized fishes. L. cyprinacea has been found mostly on pelagic species. Records on small benthic fish species are less common. Especially rare are infestations of Gobioidei adapted to a benthic life style, with reports restricted to Asia and, in Europe, to the Ponto-Caspian region. Although it is cosmopolitan, L. cyprinacea has rarely been found in Italy. One of the few Italian localities with documented infestations is Lake Trasimeno, a lake with an economically important fishery. Although endoparasites of commercially interesting fish species in this lake are well documented, information about ectoparasites is rare. In May 2015, specimens of two gobioids − Knipowitschia panizzae and Pomatoschistus canestrinii − infested with L. cyprinacea were sampled at the south shore of Lake Trasimeno. Both gobies are not native to the lake. This is the first documentation of gobioid fishes as hosts of L. cyprinacea in Italy and in Europe (outside of the Ponto-Caspian region). Although both gobies are not optimal hosts (small size, short life expectancy) they have the potential to carry and to transmit the parasite in freshwater habitats, e.g. by unintentional introduction with fry of other fish species.

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Section: Discussionmentioning

confidence: 99%

First report of the parasitic copepod Lernaea cyprinacea (Copepoda: Lernaeidae) on gobioid fishes (Teleostei: Gobonellidae) in southern Europe

Ahnelt

Konecny

Gabriel

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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“…The present study is the first record of infection by L. cyprinacea (68.1%) in this sample of guppy fish examined from KSA. Although L. cyprinacea seems to have a random choice for attachment on the body host, it was shown that the parasites were fixed especially on the fins and skin [29] . The same observations were previously reported in many other literatures [30][31][32][33][34] .…”

Section: Discussionmentioning

confidence: 99%

Guppy (Poecilia) Poeciliidae fish naturally infected with Lernaea cyprinacea parasites (Linnaeus 1758) in KSA

Ghobashy

Shafeey

Taeleb

2018

Parasitologists United Journal

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Lernaea species are crustacean, copepod parasites that can infect and cause disease and mortality in many types of freshwater fishes, especially wildcaught and pond-raised species (both cultured and natural populations). L. cyprinacea (commonly known as Anchor worm), a parasitic cyclopoid copepod, is found worldwide; mostly in cyprinids. Several species (~110 species) of lernaeids (Lernaea and Lernaea-like parasites) have been described and L. cyprinacea, is one of the more common among them (1). The economic importance of lernaeids has increased in several parts of the world as the cause of one of numerous diseases among most farmed fish species; especially fingerlings, leading to death even with only a small number of infested lernaeids (2-4). Death of fish and/or associated damage is relative to the rate of parasitic infestation (5). Infestations occur more commonly in stagnant or slow-moving water bodies. L. cyprinacea, exhibits little host specificity and has been reported previously from a variety of freshwater fishes, frogs, frog tadpoles, and adult and larval salamanders. Although infestations are common in cyprinids, including koi, goldfish, and other related carp, numerous other freshwater species are susceptible (6-8). Lernaea species have nine stages in their life cycle, including three free-living naupliar stages, five copepodid stages and one adult stage. During development, the different stages live on and off the fish. After mating, the male copepod dies and the female bores into fish tissue, eventually using a large anchor anterior end "head" to permanently embed into the skin and muscle of the fish (9,10). This direct life cycle can take from 18 to 25 days to complete and only a fish (or an amphibian) is necessary for Lernaea spp. to develop from egg to mature adult. Common sites of Lernaea infestation include the skin, fins, gills, and oral cavity. Large numbers of lernaeids in their copepodid stages can kill small fish by damaging their gills and interfering with their breathing. Fish can survive with Lernaea infestation, but chronic conditions frequently result in poor growth and debilitation; the fish become more susceptible to secondary infection by bacteria and fungus which ultimately kills them (11-14) .

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“…Likewise, Plaul et al (2010) noted that prevalence and intensity of infection reduce with decreases in water temperature. However, Dalu et al (2012) observed that parasite intensity can be negatively correlated with water temperature in tropical areas. Because the optimum temperature for the anchor worm is between 23°C and 30°C (Plaul et al, 2010), the negative relationship observed by Dalu et al (2012) may be related to parasite thermal tolerances, as water temperature exceeded the tolerance thresholds (mean values from 19.3°C to 30.1°C in July and March, respectively).…”

Section: Discussionmentioning

confidence: 99%

“…However, Dalu et al (2012) observed that parasite intensity can be negatively correlated with water temperature in tropical areas. Because the optimum temperature for the anchor worm is between 23°C and 30°C (Plaul et al, 2010), the negative relationship observed by Dalu et al (2012) may be related to parasite thermal tolerances, as water temperature exceeded the tolerance thresholds (mean values from 19.3°C to 30.1°C in July and March, respectively). This study is in agreement with the abovementioned studies supporting the hypothesis that high water temperatures within parasite thermal tolerances can increase infestation levels and consecutively promote host-parasite interaction.…”

Section: Discussionmentioning

confidence: 99%

“…Environmental factors, particularly water temperature and dissolved oxygen, and high fish densities have a key influence on the intensity of infestation of anchor worms (e.g. PerezBote, 2005;Plaul et al, 2010;Dalu et al, 2012). More specifically, water temperatures ranging from 25 to 28°C usually offer excellent conditions for parasite reproduction (Piasecki et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Lernaea cyprinacea (Crustacea: Copepoda) in the Iberian Peninsula: climate implications on host–parasite interactions

Sánchez‐Hernández

2017

Knowl. Manag. Aquat. Ecosyst.

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-The non-native parasitic anchor worm (Lernaea cyprinacea) may induce anaemia, malformations, reduced growth and increased susceptibility to secondary infection to its hosts. The objectives of this study were to (i) compile a list of the host species of L. cyprinacea in the Iberian Peninsula and (ii) assess if climate may impact on infestation levels of the parasite. There were two primary sources for data collection: (i) fish sampling in the Tormes Basin (Ávila, central Spain) during August 2010 and 2016 and (ii) data retrieved from publications containing relevant information about L. cyprinacea. Eleven temperature variables were obtained from Worldclim. Next, the relationship between infestation levels of the anchor worm (prevalence, intensity and abundance) and temperature was tested using mixed models. Fifteen cyprinids species among 18 species are host of L. cyprinacea in the Iberian Peninsula. Infestation levels of the anchor worm are highly connected to temperature. Finally, the possible implications of global warming for host-parasite interactions are discussed.Keywords: alien species / ectoparasite / fish host / global warming / mixed models Résumé -Lernaea cyprinacea (Crustacea: Copepoda) dans la péninsule ibérique : implications climatiques sur les interactions hôte-parasite. Le copépode parasite (Lernaea cyprinacea) non indigène peut induire une anémie, des malformations, une croissance réduite et une sensibilité accrue à une infection secondaire de ses hôtes. Les objectifs de cette étude étaient de (i) dresser une liste des espèces hôtes de L. cyprinacea dans la péninsule ibérique et (ii) évaluer si le climat peut avoir un impact sur les niveaux d'infestation du parasite. Il y avait deux sources principales de collecte de données : (i) l'échantillonnage des poissons dans le bassin de Tormes (Ávila, centre de l'Espagne) en août 2010 et 2016, et (ii) des données provenant de publications contenant des informations pertinentes sur L. cyprinacea. Onze variables de température ont été obtenues auprès de Worldclim. Ensuite, la relation entre les niveaux d'infestation du copépode (prévalence, intensité et abondance) et la température a été testée en utilisant des modèles mixtes. Quinze cyprinidés parmi dix-huit espèces sont hôtes de L. cyprinacea dans la péninsule ibérique. Les niveaux d'infestation de la lernée sont fortement liés à la température. Enfin, les implications possibles du réchauffement climatique pour les interactions hôte-parasite sont discutées.

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Impact ofLernaea cyprinaceaLinnaeus 1758 (Crustacea : Copepoda) almost a decade after an initial parasitic outbreak in fish of Malilangwe Reservoir, Zimbabwe

Cited by 12 publications

References 12 publications

First report of the parasitic copepod Lernaea cyprinacea (Copepoda: Lernaeidae) on gobioid fishes (Teleostei: Gobonellidae) in southern Europe

First report of the parasitic copepod Lernaea cyprinacea (Copepoda: Lernaeidae) on gobioid fishes (Teleostei: Gobonellidae) in southern Europe

Guppy (Poecilia) Poeciliidae fish naturally infected with Lernaea cyprinacea parasites (Linnaeus 1758) in KSA

Lernaea cyprinacea (Crustacea: Copepoda) in the Iberian Peninsula: climate implications on host–parasite interactions

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