Alterações Teciduais Em Intestino De Pirarucu, Arapaima Gigas (Schinz, 1822) , Infectado Pelo Nematoda Spirocamallanus Inopinatus (Travassos, 1929)

Gaines, Angélica Patricia León; Lozano, Luis Eduardo Sarmiento; Viana, Gabriela de Moraes; Monteiro, Patrícia Castro; Araújo, Cleusa Suzana Oliveira de

doi:10.24039/rnh2012621004

Cited by 3 publications

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“…However, infection by P. (S.) inopinatus showed random dispersion, a pattern that is reported for nematode species of fish parasites due to its pathogenicity (Gonçalves et al, 2018;Neves et al, 2020). Gaines et al (2012) reported that P. (S.) inopinatus is pathogenic, causing severe histopathological changes in the intestine of Arapaima gigas (Schinz, 1822).…”

Section: Discussionmentioning

confidence: 76%

Community and infracommunities of metazoan parasites in Hemiodus unimaculatus (Hemiodontidae) from Jari River basin, a tributary of Amazon River (Brazil)

Almeida

Oliveira

Tavares‐Dias

2021

Rev. Bras. Parasitol. Vet.

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Parasites are an important part of biodiversity, and knowledge of species and their relationship with their hosts helps in monitoring an ecosystem over time. The aim of this study was to investigate the fauna of metazoan parasites in Hemiodus unimaculatus from the Jari River, in the eastern Amazon region, northern Brazil. Of the fish examined, 96.7% were parasitized by one or more species, and a total of 336 parasites such as Dactylogyridae gen. sp.1, Dactylogyridae gen. sp.2, Dactylogyridae gen. sp.3, Dactylogyridae gen. sp.4, Gyrodactilydae gen. sp., Urocleidoides sp.1, Urocleidoides sp.2, Urocleidoides sp.3, metacercariae of Digenea gen. sp., Procamallanus (Spirocamallanus) inopinatus, Contracaecum sp., Neoechinorhynchus sp. and Acarina gen. sp. The parasite community showed low Brillouin diversity (0.58 ± 0.29), low evenness (0.44 ± 0.21) and low species richness (7.40 ± 3.83). There was a predominance of ectoparasites, mainly monogeneans and digeneans. The parasites showed an aggregate dispersion, except for P. (S.) inopinatus, which had a random dispersion. The size of the hosts had no effect on diversity, species richness and abundance of parasites, but other factors structured the parasite community. This is the first study on the parasite community and infracommunities in H. unimaculatus.

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Section: Discussionmentioning

confidence: 76%

Community and infracommunities of metazoan parasites in Hemiodus unimaculatus (Hemiodontidae) from Jari River basin, a tributary of Amazon River (Brazil)

Almeida

Oliveira

Tavares‐Dias

2021

Rev. Bras. Parasitol. Vet.

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“…may cause intestinal obstruction (Rivadeneyra et al, 2020). In addition to histopathological alterations such as areas of focal necrosis, desquamations, inflammatory infiltrate, hemorrhage and cytolysis (Gaines et al, 2012), which reinforces the need for constant monitoring of parasitic fauna in fish.…”

Section: Parasitementioning

confidence: 99%

“…Specimens of A. gigas can be parasitized by different species of nematodes in one or more organs as well as throughout the digestive tract (Santos et al, 2008;Araújo et al, 2009b;Souza & Malta, 2010;Gaines et al, 2012;Serrano-Martínez et al, 2015;Azevedo et al, 2017;Zevallos & Cotrina, 2017;Morey et al, 2020). In this study, the occurrence of Spirocamallanus sp.…”

Section: Parasitementioning

confidence: 99%

“…With regard to nematodes, the species considered to be the most pathogenic in the rearing of A. gigas is Goezia spinulosa Diesing, 1839 (Santos & Moravec, 2009;Azevedo et al, 2017;Silva et al, 2016. Other species include Camallanus tridentatus Drasche, 1884, Terranova serrata Drasche, 1884 (Araújo et al, 2009b), Nilonema senticosum Baylis, 1927(Serrano-Martínez et al, 2015, Spirocamallanus inopinatus Travassos, Artigas & Pereira, 1928(Gaines et al, 2012, Capillostrongyloides arapaimae Santos et al, 2008 and larvae of Ascaridoidea gen. sp. (Silva et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Ward & Magath, 1917 have zoonotic potential and may cause anisakidosis in humans (Andrade-Porto et al, 2015;Silva et al, 2016;Azevedo et al, 2017). High levels of nematode infections cause severe ulcerative lesions, necrosis in the gastric gland, and inflammatory reactions in the stomach, which can lead to the death of juvenile A. gigas (Menezes et al, 2011;Gaines et al, 2012;Azevedo et al, 2017;Miler et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Parasitism of Arapaima gigas (Schinz, 1822) in fish farms of the state of Amazonas, Brazil

Gama

Porto

Anjos

et al. 2022

Rev. Bras. Parasitol. Vet.

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The objective of this study was to investigate the parasites occurrences and to determine the rates of infestation/parasitic infection in juvenile Arapaima gigas from seven fish farms in the state of Amazonas, relating to the characteristics of these fish farms. Of the 70 A. gigas evaluated, 43 were infested/infected, with a total of 133 parasites collected. Three fish farms (2, 4, 6) showed the highest levels of prevalence of parasites (100%, 70%, 70%), mean intensity (4.1±2.6, 8.1±9.2, and 2.1±1.3), and mean abundance (4.1±2.6, 5.7±8.1, and 1.5±1.5), respectively. Prevalence ranged from 30% to 100%, mean intensity from 1.0 to 8.1 and mean abundance from 0.3 to 5.7. Monogenea, Digenea, Nematoda (Hysterothylacium sp. and Spirocamallanus sp.) and Acanthocephala (Neoechinorhynchus sp. and Polyacanthorhynchus sp.) were identified. The parasites Hysterothylacium sp. and Neoechinorhynchus sp. were the most prevalent parasites with 31.43% and 15.71%, respectively. The fish presented negative allometry in growth and constant condition factor. Measures to prevent and control the parasitic diseases diagnosed are discussed as well prophylactic practices that contribute to the biosecurity of the farms.

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Aspectos Ecológicos da Comunidade de Parasitos em Duas Espécies de Loricariidae da Bacia Igarapé Fortaleza, Estado do Amapá, Brasil

Gonçalves¹,

Oliveira²,

Santos³

et al. 2014

Biota Amazônia

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RESUMO: Os parasitos têm sido reconhecidos como importantes componentes dos ecossistemas. Esses usam o ambiente para a sua transmissão e podem infectar diversas espécies de peixe no ecossistema. O presente estudo investigou a ecologia parasitária em Squaliforma emarginata e Harttia duriventris da bacia Igarapé Fortaleza, região de Macapá, estado do Amapá, Norte do Brasil. Para ambos os peixes houve similar nível de infecção por Ichthyophthirius multifiliis (Ciliophora), parasito dominante e com dispersão agregada. Spironucleus sp. (Hexamitidae) ocorreu somente nas brânquias de H. duriventris, enquanto Trinigyrus mourei (Monogenoidea) e Procamallanus inopinatus (Camallanidae) foram encontrados somente S. emarginata. O índice de Brillouin, riqueza de espécies de parasitos, uniformidade e dominância de Berger-Parker foram maiores em S. emarginata, mas para ambos os hospedeiros a comunidade parasitária foi caracterizada por baixa diversidade e baixa uniformidade. Em H. duriventris e S. emarginata, o baixo parasitismo não afetou o fator de condição relativo (Kn) dos hospedeiros. Em S. emarginata houve correlação positiva da abundância de I. multifiliis com o comprimento, peso e Kn dos hospedeiros, enquanto que em H. druventris somente o peso e Kn mostram correlação com a abundância desse ciliado. Este foi o primeiro registro de I. multifiliis, Spironucleus sp. e P. inopinatus para H. duriventris e S. emarginata.Palavras-chave: Amazônia, diversidade, parasitos, peixes de água doce, metazoários.ABSTRACT: Parasites have been recognized as important components of ecosystems. These use the environment to its transmission and can infect diverse fish species in the ecosystem. This study investigated the parasites ecology in Squaliforma emarginata and Harttia duriventris from the Igarapé Fortaleza basin, in municipality of Macapá, Amapá State, Northern Brazil. For both fish there was similar infection level by Ichthyophthirius multifiliis (Ciliophora), parasite specie dominant and that had an aggregate dispersion. Spironucleus sp. (Hexamitidae) occur only in gills of H. duriventris, but Trinigyrus mourei (Monogenoidea) e Procamallanus inopinatus (Camallanidae) were found only in S. emarginata. Brillouin index, parasites species richness, evenness index and Berger-Parker index were higher for S. emarginata when compared to H. duriventris, but to both hosts the community of parasites was characterized by low diversity and low uniformity. In H. duriventris and S. emarginata, low parasitism not influenced the relative condition factor (Kn) of the hosts. In S. emarginata there was positive correlation in abundance of I. multifiliis with length, body weight and Kn of the hosts, while that in H. druventris only the body weight and Kn present positive correlation with the abundance of I. multifiliis in gills. This was the first report of I. multifiliis, Spironucleus sp. and P. inopinatus to H. duriventris and S. emarginata.

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Alterações Teciduais Em Intestino De Pirarucu, Arapaima Gigas (Schinz, 1822) , Infectado Pelo Nematoda Spirocamallanus Inopinatus (Travassos, 1929)

Cited by 3 publications

References 0 publications

Community and infracommunities of metazoan parasites in Hemiodus unimaculatus (Hemiodontidae) from Jari River basin, a tributary of Amazon River (Brazil)

Community and infracommunities of metazoan parasites in Hemiodus unimaculatus (Hemiodontidae) from Jari River basin, a tributary of Amazon River (Brazil)

Parasitism of Arapaima gigas (Schinz, 1822) in fish farms of the state of Amazonas, Brazil

Aspectos Ecológicos da Comunidade de Parasitos em Duas Espécies de Loricariidae da Bacia Igarapé Fortaleza, Estado do Amapá, Brasil

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