Aspects of the ecology of metazoan ectoparasites of marine fishes

Rohde, Klaus; Hayward, Craig J.; Heap, Maureen

doi:10.1016/0020-7519(95)00015-t

Cited by 296 publications

(261 citation statements)

References 26 publications

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“…The ecological terms adopted were those recommended by Rohde et al (1995) and Bush et al (1997). The variance-mean ratio of parasite abundance (index of dispersion) and Poulin discrepancy index (D) were computed using the software Quantitative Parasitology 3.0 and were employed to detect distribution patterns of the parasite infracommunity (Rózsa et al, 2000) in species with prevalence 10%.…”

Section: Methodsmentioning

confidence: 99%

Parasitic infections in tambaqui from eight fish farms in Northern Brazil

Dias

Neves

Marinho

et al. 2015

Arq. Bras. Med. Vet. Zootec.

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The aim of this study was to evaluate the parasites and parasite-host relationship in Colossoma macropomum from eight fish farms in Amapá State, Northern Brazil. A total of 12,242,559 parasites were recovered from hosts in the eight fish farms, and 87.4% of fish were infected by one or more parasite species, such as Ichthyophthirius multifiliis, Piscinoodinium pillulare, Trichodina sp. and Tetrahymena sp. (Protozoa), Anacanthorus spathulatus, Linguadactyloides brinkmanni, Mymarothecium boegeri and Notozothecium janauachensis (Monogenoidea), Procamallanus (Spirocamallanus) inopinatus (Nematoda) and Perulernaea gamitanae and Braga patagonica (Crustacea). Ichthyophthirius multifiliis presented dominance, but the greatest levels of parasitism were caused by I. multifiliis, P. pilulare, monogenoideans species and P. gamitanae, and all these parasites had an aggregate dispersion. The eight fish farms have differences in the parasitic infection levels, management and water quality, which are further discussed here.Keywords: Colossoma macropomum, metazoans, parasites, protozoans, sanity RESUMO O presente estudo avaliou as infecções parasitárias e a relação parasito-hospedeiro em

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Section: Methodsmentioning

confidence: 99%

Parasitic infections in tambaqui from eight fish farms in Northern Brazil

Dias

Neves

Marinho

et al. 2015

Arq. Bras. Med. Vet. Zootec.

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“…The identification of the collected parasites was done according to Díaz-Ungria (1968), Kritsky et al (1979), Thatcher & Paredes (1985), Boeger et al (2002), Belmont-Jégu et al (2004), andThatcher (2006). After these procedures, the parasitological indexes were determined, including prevalence, mean intensity, abundance (Bush et al, 1997), and mean relative dominance (Rohde et al, 1995). The relative condition factor (Kn) was investigated for parasitized and non-parasitized fish.…”

Section: Methodsmentioning

confidence: 99%

Parasitic fauna in hybrid tambacu from fish farms

Silva

Tavares‐Dias²,

Dias³

et al. 2013

Pesq. agropec. bras.

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-The objective of this work was to evaluate the parasitic fauna of hybrid tambacu (Colossoma macropomum x Piaractus mesopotamicus) from fish farms and the host-parasite relationship. A hundred and fourteen fish were collected from four fish farms in Macapá, in the state of Amapá, Brazil, 80.7% of which were infected by: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis, and Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala); Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); and Proteocephalidae larvae (Cestoda). A total of 8,136,252 parasites were collected from the examined fish. This is the first record of N. buttnerae, C. colossomi, N. janauachensis, M. viatorum, and Proteocephalidae for hybrid tambacu in Brazil. Ichthyophthirius multifiliis was the most prevalent parasite, whereas endohelminths were the less. A positive correlation was observed between number of I. multifiliis and total length and weight of fish, as well as between number of P. gamitanae and total length. The infection by I. multifiliis had association with the parasitism by Monogenoidea. Low water quality contributes to high parasitism of hybrid tambacu by ectoparasites, which, however, does not influence the relative condition factor of fish.Index terms: Colossoma macropomum, Ichthyophthirius multifiliis, Piaractus mesopotamicus, ectoparasite, native fish, host-parasite relationship. Parasitofauna no híbrido tambacu de pisciculturasResumo -O objetivo deste trabalho foi avaliar a parasitofauna de tambacu (Colossoma macropomum x Piaractus mesopotamicus) de pisciculturas e a relação parasito-hospedeiro. Cento e catorze peixes foram coletados de quatro pisciculturas de Macapá, AP, 80,7% dos quais estavam infectados por: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis e Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala), Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); e larvas de Proteocephalidae (Cestoda). Um total de 8.136.252 parasitos foram coletados dos peixes examinados. Esse é o primeiro registro de N. buttnerae, C. colossomi, N. janauachensis, M. viatorum e Proteocephalidae para híbridos tambacu no Brasil. Ichtyophthirius multifiliis foi o parasito mais prevalente, enquanto os endohelmintos, os menos. Observou-se correlação positiva entre número de I. multifiliis e comprimento total e peso corporal dos peixes, bem como entre número de P. gamitanae e comprimento total. A infeção por I. multifiliis mostrou associação com o parasitismo por Monogenoidea. A baixa qualidade da água contribui para o alto parasitismo do hibrido tambacu por ectoparasitas, que, no entanto, não influi no fator de condição relativo dos peixes.Termos para indexação: Colossoma macropomum, Ichthyophthirius multifiliis, Piaractus mesopotamicus, ectoparasita, peixe nativo, relação...

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“…These differences may have been caused by differences in the ecological characteristics of the habitat and also the food preferences of the two species of hosts. Alves et al (2003) compared their results with those reported by earlier workers for S. japonicus from different regions, such as Rio de Janeiro (Rego and Santos, 1983), Brazil (Rohde et al 1995), Argentina (Cremonte and Sardella, 1997) and suggested that differences that occurred between different geographical areas could serve as indicators of possible latitudinal gradient of parasitization in marine fishes from South American and Atlantic regions, in accordance with the hypothesis of a higher biodiversity in the regions nearer to equatorial line (Rohde, 1999). On the other hand, Cremonte and Sardella (1997) stated that qualitative differences between the component communities of S. japonicus from Brazil and Argentina might be explained by the presence of different population stocks in both regions.…”

Section: Discussionmentioning

confidence: 82%

Community ecology of the metazoan parasites of the Indian mackerel Rastrelliger kanagurta (Scombridae) from the coast of Visakhapatnam, Bay of Bengal

Madhavi

Lakshmi

2012

J Parasit Dis

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One hundred and eighty four specimens of the mackerel Rastrelliger kanagurta collected from fish landings at Visakhapatnam coast, Bay of Bengal, between January 2006 and 2007, were examined for analysis of their metazoan parasite community structure at infra and component community levels and study the effects of season and host body length on these communities. Fifteen species of metazoan parasites were collected including 3 spp. Monogenea, 7 spp. Digenea and 5 spp. Copepoda. All the fish were parasitized by one or more metazoan parasite species. A total of 2,004 parasites were collected with a mean of 10.9. The majority were digeneans accounting for 42.4% of total number of parasites collected and the hemiurid Lecithocladium angustiovum is found to be the most dominant species. Mean values of species richness (3.0 ± 1.5), abundance (12.4 ± 9.3) and diversity (H 0 = 0.92) were within ranges observed for most of the metazoan parasite communities of marine fish from temperate and tropical countries. Seasonally, the mean diversity and parasite species richness of infracommunities were high during December and January and low during September-October. No correlation was found between host total length and any of the community descriptors. Most of the parasites i.e., 12 out of 15 species of parasites collected were host specialists. Only one species Aponurus laguncula was a host generalist. All taxa of metazoan parasites showed a typical over-dispersed pattern of distribution. The dominance of the core species in all the infracommunities and the high degree of host specialization of the parasite species resulted in the predictable component in the infracommunities to be high, each infra community comprising a core species accompanied by a few secondary species.

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Aspects of the ecology of metazoan ectoparasites of marine fishes

Cited by 296 publications

References 26 publications

Parasitic infections in tambaqui from eight fish farms in Northern Brazil

Parasitic infections in tambaqui from eight fish farms in Northern Brazil

Parasitic fauna in hybrid tambacu from fish farms

Community ecology of the metazoan parasites of the Indian mackerel Rastrelliger kanagurta (Scombridae) from the coast of Visakhapatnam, Bay of Bengal

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