Scanning electron microscopic observations on Goezia spinulosa (Diesing, 1839) (Nematoda: Anisakidae) from Arapaima gigas (Cuvier, 1817)

Costa, Hélio Martins de Araújo; Guimarães, Marcos Pezzi; Cabral, Dagmar Diniz; Mundim, Maria José Santos

doi:10.1590/s0074-02761995000600009

Cited by 5 publications

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“…Costa et al (1995) gave a good description of G. spinulosa based on SEM examination, but they also failed to observe the excretory pore; otherwise, the present study can confi rm most features found by them (sometimes with slight differences). Thus, for the fi rst time, the excretory pore, the phasmids of the male, and the characteristic spination of the cloacal opening are described.…”

Section: Discussioncontrasting

confidence: 49%

“…Thus, for the fi rst time, the excretory pore, the phasmids of the male, and the characteristic spination of the cloacal opening are described. Although Costa et al (1995) reported six pairs of postanal papillae (as also did Freitas and Lent 1946) To date, fi ve species of Goezia Zeder, 1800 are known from freshwater fi shes in South America: G. spinulosa, G. intermedia Rasheed, 1965, G. brasiliensis Moravec, Kohn et Fernandes, 1994, G. brevicaeca Moravec, Kohn et Fernandes, 1994, and G. leporini Martins et Yoshitoshi, 2003(see Moravec 1998, Martins and Yoshitoshi 2003, Thatcher 2006. Whereas the fi rst species has been mainly reported from Arapaima gigas (Arapaimidae, Osteoglossiformes) from Brazil and Peru, G. intermedia is known from Cichla ocellaris Schneider (Cichlidae, Perciformes) in Guyana, both G. brasiliensis and G. brevicaeca mainly from Brycon hilarii (Valenciennes) (Characidae, Characiformes) in the Paraná River basin in Brazil, and G. leporini from Leporinus macrocephalus Garavello et Britski (Anostomidae, Characiformes) also in the Paraná River basin in Brazil.…”

Section: Discussionmentioning

confidence: 91%

“…However, its morphology remained insuffi ciently known until Costa et al (1995) provided data on specimens from A. gigas studied with the use of SEM. Nevertheless, the present study revealed some previously unreported or inaccurately described morphological features.…”

mentioning

confidence: 99%

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Goezia spinulosa (Nematoda: Raphidascarididae), a pathogenic parasite of the arapaima Arapaima gigas (Osteichthyes)

Santos¹,

Moravec²

2009

FOLIA PARASIT

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Abstract:The nematode Goezia spinulosa (Diesing, 1839) (Raphidascarididae) is redescribed based on specimens found in the stomach and intestine of the naturally infected arapaima Arapaima gigas (Schinz) from the Mexiana Island, Amazon River Delta, Brazil. Light and electron microscopy examinations revealed some previously unreported or inaccurately described morphological features in the species, such as the position of the excretory pore, phasmids in the male or the number (4) of postanal papillae. The morphology of G. spinulosa is compared with that of other four congeneric species parasitizing freshwater fi shes in South America. This nematode seems to be one of the most pathogenic parasites of A. gigas in the Mexiana Island, which are responsible for a high mortality of cultured arapaima fi ngerlings. Apparently, the source of G. spinulosa infection for arapaima fi ngerlings cultured in tanks was the infected plankton collected in the localities inhabited by wild arapaimas. Therefore, control measures should include the sterilisation of the plankton before its use as food for fi sh. A rare infection of Eustrongylides sp. larvae (Dioctophymatidae) in arapaima fi ngerlings was also found (new host record); the larvae were inside swellings on the body surface.

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Section: Discussioncontrasting

confidence: 49%

Section: Discussionmentioning

confidence: 91%

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Goezia spinulosa (Nematoda: Raphidascarididae), a pathogenic parasite of the arapaima Arapaima gigas (Osteichthyes)

Santos¹,

Moravec²

2009

FOLIA PARASIT

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“…The single prominent median papilla situated immediately anterior to the cloaca of G. leporini n. sp. was present only in G. spinulosa studied by Baylis (1927), and by scanning electron microscopy as shown by Costa et al (1995). In addition, the present description showed lower spicule length than that observed in G. kliksi (Deardorff & Overstret, 1980) and in G. brasiliensis (Moravec et al, 1994).…”

Section: Discussionsupporting

confidence: 48%

A new nematode species Goezia leporini n. sp. (Anisakidae) from cultured freshwater fish Leporinus macrocephalus (Anostomidae) in Brazil

Martins

Yoshitoshi

2003

Braz. J. Biol.

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This paper describes nematode infection in the cultured freshwater fish Leporinus macrocephalus (Osteichthyses: Anostomidae) collected at Batatais, São Paulo State, Brazil. Of a total of 32 examined fish, 21 (65%) were infected with Goezia leporini n. sp. (Nematoda: Anisakidae) with mean infection intensity of 4.1 parasites. The nematodes presented total length greater than G intermedia, G. holmesi, G. pelagia, G. minuta, G. kliksi, G. sinamora, G. nonipapillata, G. alii, G. moraveci, G. brasiliensis, and G. brevicaeca. The main difference was a great number of preanal papillae in males when compared to G. brasiliensis and G. brevicaeca. The present description also differs from that of G. brasiliensis with respect to spicule length and distance of vulva from the anterior extremity.

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Integrative taxonomy of Goezia spinulosa (Nematoda: Raphidascarididae) from arapaimas in the northwestern Brazil

Silva

Cavalcante

Camargo

et al. 2017

Veterinary Parasitology

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Arapaima gigas, a fish with a high market value, has been farmed in different localities within Brazil. Among its parasites, adults of Goezia spinulosa are reported to cause ulcers in the stomach and to result in the death of farmed fingerlings. Due to the veterinary importance of this nematode in cultured arapaimas, an integrative taxonomic study is proposed, combining morphological, ultrastructural and genetic profiles of this parasite. The fish were obtained from semi-intensive fish farming in Acre State, Brazil. The fish measured 7-42cm in total length and the intensity of infection was 1-60 parasites per fish. The site of infection was mainly the stomach. Morphological and ultrastructural analyses of G. spinulosa showed the importance of its spiny body in firmly attaching the worm to the gastric mucosa, resulting in lesions, ulcers and deep gastric perforations of the stomach wall. New sequences for partial 18S rDNA, ITS1, 5.8S and ITS2 rDNA, partial 28S rDNA, cox1 mtDNA and for cox2 mtDNA are presented. Phylogenetic reconstructions based on the partial 18S and 28S rDNA shows species of Goezia occur in a clade well separated from other genera in both analyses. Both the partial 18S and 28S rDNA genes represented good genetic markers for distinguishing genera of the Raphidascarididae, with exception of Hysterothylacium. This integrated taxonomic study produced a robust profile for G. spinulosa that will aid the diagnosis of both adults and larval stages from arapaimas and possible intermediate hosts.

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Scanning electron microscopic observations on Goezia spinulosa (Diesing, 1839) (Nematoda: Anisakidae) from Arapaima gigas (Cuvier, 1817)

Cited by 5 publications

References 0 publications

Goezia spinulosa (Nematoda: Raphidascarididae), a pathogenic parasite of the arapaima Arapaima gigas (Osteichthyes)

Goezia spinulosa (Nematoda: Raphidascarididae), a pathogenic parasite of the arapaima Arapaima gigas (Osteichthyes)

A new nematode species Goezia leporini n. sp. (Anisakidae) from cultured freshwater fish Leporinus macrocephalus (Anostomidae) in Brazil

Integrative taxonomy of Goezia spinulosa (Nematoda: Raphidascarididae) from arapaimas in the northwestern Brazil

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