Parasites of Fish as Indicators of Environmental Stress

Landsberg, Jan H.; Blakesley, B. A.; Reese, R.; McRae, Gil; Forstchen, P. R.

doi:10.1007/978-94-011-4976-1_17

Cited by 47 publications

(61 citation statements)

References 27 publications

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“…Fish parasites have been used as biological and environmental indicators (for a review see Palm, 2011), especially for environmental change and pollution (Diamant et al, 1999;Dzikowski et al, 2003;Palm & Rü ckert, 2009) or environmental stress (Landsberg et al, 1998). Sures (2001Sures ( , 2003 used acanthocephalan parasites to detect heavy metal pollution, because acanthocephalans accumulate 1000 times higher amounts of heavy metals in contrast to their host tissues.…”

Section: Introductionmentioning

confidence: 99%

Parasites of the grouper fishEpinephelus coioides(Serranidae) as potential environmental indicators in Indonesian coastal ecosystems

Kleinertz

Palm

2013

J. Helminthol.

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A total of 195 Epinephelus coioides (Hamilton, 1822) were studied for fish parasites from Javanese (Segara Anakan lagoon) and Balinese waters. Up to 25 different parasite species belonging to the following taxa: one Ciliata, one Microsporea, five Digenea, one Monogenea, four Cestoda, four Nematoda, one Acanthocephala, one Hirudinea and seven Crustacea were identified with four new host and locality records. The dominant parasites included the monogenean Pseudorhabdosynochus lantauensis (53.3 -97.1%), the nematode Spirophilometra endangae (23.3 -42.9%), the digenean Didymodiclinus sp. (2.9 -40.0%), the nematodes Philometra sp. (22.6 -34.3%) and Raphidascaris sp. (2.9 -28.6%), and the isopod Alcirona sp. (6.7 -31.4%). Regional differences for E. coioides were found in terms of endoparasite diversity, total diversity according to ShannonWiener, Simpson index and Evenness. A comparison with published data from Sumatera revealed highest endoparasite diversity (Shannon -Wiener: 1.86/1.67-2.04) and lowest ectoparasite/endoparasite ratio (0.73/0.57 -0.88) off the Balinese coast, followed by Lampung Bay, Sumatera

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Section: Introductionmentioning

confidence: 99%

Parasites of the grouper fishEpinephelus coioides(Serranidae) as potential environmental indicators in Indonesian coastal ecosystems

Kleinertz

Palm

2013

J. Helminthol.

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“…M. barbatus showed higher diversity and richness values in Barcelona than in Blanes. Although pollution and stress are usually associated with a reduction in species richness and diversity of parasites (Schmidt et al, 2003), this is not a rule for all host species (Zander and Kesting, 1996;Landsberg et al, 1998). In fact, a wide range of positive and negative responses of parasite species to pollutants has been observed (Overstreet, 1997;Lafferty and Kuris, 1999;Dzikowski et al, 2003); since it is not always clear how diversity varies with particular impacts, because some species or parasite populations may increase while others decline (Poulin, 1992;Lafferty, 1997;Marcogliese, 2005), drawing conclusions based exclusively on a direct comparison of parasite indices is unreliable (Lang et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

“…Histopathology has been shown to be a useful tool for detecting sublethal and chronic damage of pollution in marine organisms (Stehr et al, 1998;Bernet et al, 1999;Korkea-aho et al, 2006). Since fish parasites can reflect adverse effects of complex and variable environmental stresses (Lafferty, 1997;Landsberg et al, 1998;Lafferty and Kuris, 1999;MacKenzie, 1999;Dzikowski et al, 2003;Williams and Mackenzie, 2003), the study of fish parasite community structure has been proposed as a more sensitive indicator than the study of fishes themselves (Landsberg et al, 1998). However, although evidence supports the view of a relationship between parasitic load of fish and exposure to pollutants (Zander and Kesting, 1996;Schmidt et al, 2003), the potential use of parasites as bioindicators for pollution biomonitoring is still controversial, since many natural factors also influence prevalence, infection intensity and biodiversity of parasites (Williams and Mackenzie, 2003) and both hosts and parasites can interact differently with each stressor (Lafferty and Kuris, 1999).…”

Section: Introductionmentioning

confidence: 99%

Parasites and hystopathology of <i>Mullus barbatus</i> and <i>Citharus linguatula</i> (Pisces) from two sites in the NW Mediterranean with different degrees of pollution

Carreras-Aubets¹,

Montero²,

Padrós³

et al. 2010

Sci. Mar.

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SUMMARY: The usefulness of fish parasite communities as bioindicators of environmental stress was tested on two benthic fish species, the red mullet (Mullus barbatus) and the spotted flounder (Citharus linguatula), during the spring of 2006 at two sites of the Catalan coast (northwestern Mediterranean): an anthropogenic-impacted area located close to the city of Barcelona, and a less polluted area close to Blanes (Girona). Gonadosomatic and hepatosomatic indices and condition factor were determined for the fishes caught. Prevalence, mean intensity, mean abundance and species richness of the parasites found in the survey were calculated for both species and locations, and the main histological alterations were recorded. Cysts of unknown aetiology and intestinal coccidians were reported only in red mullets from the area close to Barcelona, which were highly parasitized by the digenean Opecoeloides furcatus and the nematode Capillaria sp. However, a higher prevalence of Ichthyophonus sp. was reported in the spotted flounder from Blanes. Cysts of unknown aetiology, some nematodes and Ichthyophonus sp. may be associated with pollution.Keywords: bioindicators, Mediterranean, Mullus barbatus, Citharus linguatula, cysts of unknown etiology (CUEs), Ichthyophonus sp. RESUMEN: Parásitos e histopatología de Mullus barbatus y Citharus linguatula de dos zonas sometidas a diferente grado de contaminación del Mediterráneo noroccidental. -Se ha comparado la utilidad de las comunidades parasíticas de peces como bioindicadores de estrés ambiental en dos especies bentónicas de peces , el salmonete de fango Mullus barbatus y la solleta Citharus linguatula, durante la primavera de 2006 en dos lugares de la costa catalana (Mediterráneo NO): un área fuertemente impactada cerca de la ciudad de Barcelona, y una menos contaminada cerca de Blanes (Girona). Se determinó el índice gonadosomático, el índice hepatosomático y el factor de condición de los peces capturados. Se calculó la prevalencia, intensidad media, abundancia media y riqueza específica de los diferentes parásitos encontrados por especie y localidad, y se analizaron las principales alteraciones histológicas. Se han encontrado quistes de etiología desconocida y coccidios intestinales tan sólo en los ejemplares de M. barbatus de Barcelona, los cuales también estaban altamente parasitados por el digeneo Opecoeloides furcatus y el nematodo Capillaria sp. Se ha detectado Ichthyophonus sp. tan sólo en los ejemplares de C. linguatula, presentando una mayor prevalencia en los ejemplares de Blanes. Los quistes de etiología desconocida, algunos nematodos e Ichthyophonus sp. podrían estar relacionados con la contaminación.

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“…The mechanism whereby cestode-infected animals accumulate less toxicants than parasite-free ones is unknown, however, among other factors it may be partially due to their lower metabolic rate (Bergey et al, 2002). The effect of heavy metal concentrations on parasites has been studied particularly in polluted aquatic environments (Landsberg et al, 1998;Thielen et al;2004;Turceková et al, 2002). Considerably less literature is available on the use of mammalian endoparasites in environmental-impact studies.…”

Section: Discussionmentioning

confidence: 99%

Heavy metal accumulation in small terrestrial rodents infected by cestodes or nematodes

Jankovská¹,

Langrová²,

Bejček³

et al. 2008

Parasite

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Summary :The aim of the present study was to assess whether there is a difference in accumulation of heavy metal ions (Cd, Cr, Cu, Mn, Ni, Pb and Zn) in hosts (small mammals) infected by cestode parasites when compared to those without cestode infection. The abundance of gastrointestinal parasites and bioaccumulation of heavy metals in host livers and kidneys were measured. Contents of heavy metals in hosts were determined by ICP OES method. The hosts with cestode infection (Paranoplocephala sp.) had lower contents of heavy metals in their livers and kidneys compared to hosts with nematode infection (Mastophorus muris). The content of Pb, Cd, Cr, Cu and Ni was higher in kidneys than in livers, in both (cestode and nematode infected) rodents while the content of Mn was higher in livers. Content of Zn was similar. The content of heavy metals in host was decreasing with the increasing abundance of cestodes (Paranoplocephala sp.). Species-response models to particular heavy metals are presented. Résumé : ACCUMULATION DE MÉTAUX LOURDS CHEZ DES PETITS RONGEURS TERRESTRES ATTEINTS DE CESTODOSES OU DE NEMATODOSES ) avaient des taux de métaux lourds dans leur foie et dans leurs reins plus bas comparés aux hôtes porteurs de nématodes (Mastophorus muris). Les taux de Pb, Cd, Cr, Cu et Ni étaient plus élevés dans les reins que dans le foie chez les les rongeurs porteurs de cestodes ou de nématodes, alors que les taux de Mn étaient plus élevés dans le foie et que ceux de Zn étaient similaires. Les taux de métaux lourds chez les hôtes diminuaient quand l'abondance de cestodes (Paranoplocephala sp.) augmentait. Des modèles de réponse des espèces à des métaux particuliers sont présentés.KEY WORDS : bioaccumulation, Cd, Cr, Cu, Mn, Ni, Pb, Zn, small mammals, rodents, cestode infection, nematode infection. : bioaccumulation, Cd, Cr, Cu, Mn, Ni, Pb, Zn, petit levels of heavy metals in the environment may be monitored appropriately by the assessment of their concentrations in internal organs of free-living small mammals (Ieradi et al., 2003;Kålås et al., 2000). MOTS CLÉSStudies on endoparasites of fish revealed that several helminths were able to accumulate considerable concentrations of heavy metals (Schludermann et al.,

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Parasites of Fish as Indicators of Environmental Stress

Cited by 47 publications

References 27 publications

Parasites of the grouper fishEpinephelus coioides(Serranidae) as potential environmental indicators in Indonesian coastal ecosystems

Parasites of the grouper fishEpinephelus coioides(Serranidae) as potential environmental indicators in Indonesian coastal ecosystems

Parasites and hystopathology of <i>Mullus barbatus</i> and <i>Citharus linguatula</i> (Pisces) from two sites in the NW Mediterranean with different degrees of pollution

Heavy metal accumulation in small terrestrial rodents infected by cestodes or nematodes

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