Abstract:Dinosoma clupeola sp. n. is described from Harengula clupeola, and resembles D. hawaiiense Yamaguti, 1970, from which it differs in the entire, elongate-saccular seminal vesicle, tegument weakly plicated, smaller size of body and internal organs, and slightly larger and narrower eggs. Pseudoacanthostomum floridensis Nahhas & Short, 1965 is referred to Netuma barba, which represents a new host record. Dinosoma clupeola sp. n. é descrito de Harengula clupeola, e assemelha-se a D. hawaiiense Yamaguti, 1970, da… Show more
“…All parasites of N. barba showed the typical aggregated pattern of distribution observed in many parasite systems. Dinosoma clupeola Fernandes & Goulart, 1989, showed the highest values of dispersion indices (Table 3). Abundance of L. monacanthus was positively correlated with host's total length, with which prevalence was not significantly correlated (Table 4).…”
Section: Component Communitymentioning
confidence: 99%
“…Some taxonomic papers on parasites of N. barba from Brazil exist: Amato (1974), Pereira-Junior & Costa (1986), Fernandes & Goulart (1989) on digeneans; Fortes (1981) on nematodes; Fortes (1981), São Clemente et al (1991) on cestodes; Luque et al (1998), and Luque & Cezar (2000) on copepods.…”
Between March 2000 and April 2001, 63 specimens of N. barba from Angra dos Reis, coastal zone of the State of Rio de Janeiro (23 degrees 0' S, 44 degrees 19' W), Brazil, were necropsied to study their infracommunities of metazoan parasites. Fifteen species of metazoan parasites were collected: 2 digeneans, 1 monogenean, 2 cestodes, 1 acantocephalan, 2 nematodes, 6 copepods, and 1 hirudinean. Ninety-six percent of the catfishes were parasitized by at least one metazoan parasite species. A total of 646 individual parasites was collected, with mean of 10.3 +/- 16.6 parasites/fish. The copepods were 37.5% of the total parasite specimens collected. Lepeophtheirus monacanthus was the most dominant species and the only species with abundance positively correlated with the host total length. Host sex did not influence parasite prevalence or mean abundance of any species. The mean diversity in the infracommunities of N. barba was H = 0.130 +/- 0.115 with no correlation with host's total length and without differences in relation to sex of the host. One pair of endoparasites (Dinosoma clupeola and Pseudoacanthostomum floridensis) showed positive association and covariation between their abundances and prevalences. The parasite community of N. barba from Rio de Janeiro can be defined as a complex of species with low prevalence and abundance and with scarcity of interspecific associations. However, because of both the presence of assemblages of sympatric ariid species as well as the spawning behavior characteristic of these fishes, additional comparative studies of the parasite component communities of ariids are necessaries to elucidate this pattern.
“…All parasites of N. barba showed the typical aggregated pattern of distribution observed in many parasite systems. Dinosoma clupeola Fernandes & Goulart, 1989, showed the highest values of dispersion indices (Table 3). Abundance of L. monacanthus was positively correlated with host's total length, with which prevalence was not significantly correlated (Table 4).…”
Section: Component Communitymentioning
confidence: 99%
“…Some taxonomic papers on parasites of N. barba from Brazil exist: Amato (1974), Pereira-Junior & Costa (1986), Fernandes & Goulart (1989) on digeneans; Fortes (1981) on nematodes; Fortes (1981), São Clemente et al (1991) on cestodes; Luque et al (1998), and Luque & Cezar (2000) on copepods.…”
Between March 2000 and April 2001, 63 specimens of N. barba from Angra dos Reis, coastal zone of the State of Rio de Janeiro (23 degrees 0' S, 44 degrees 19' W), Brazil, were necropsied to study their infracommunities of metazoan parasites. Fifteen species of metazoan parasites were collected: 2 digeneans, 1 monogenean, 2 cestodes, 1 acantocephalan, 2 nematodes, 6 copepods, and 1 hirudinean. Ninety-six percent of the catfishes were parasitized by at least one metazoan parasite species. A total of 646 individual parasites was collected, with mean of 10.3 +/- 16.6 parasites/fish. The copepods were 37.5% of the total parasite specimens collected. Lepeophtheirus monacanthus was the most dominant species and the only species with abundance positively correlated with the host total length. Host sex did not influence parasite prevalence or mean abundance of any species. The mean diversity in the infracommunities of N. barba was H = 0.130 +/- 0.115 with no correlation with host's total length and without differences in relation to sex of the host. One pair of endoparasites (Dinosoma clupeola and Pseudoacanthostomum floridensis) showed positive association and covariation between their abundances and prevalences. The parasite community of N. barba from Rio de Janeiro can be defined as a complex of species with low prevalence and abundance and with scarcity of interspecific associations. However, because of both the presence of assemblages of sympatric ariid species as well as the spawning behavior characteristic of these fishes, additional comparative studies of the parasite component communities of ariids are necessaries to elucidate this pattern.
“…In Brazil, the parasitic fauna of clupeid fishes is poorly known, with most studies of taxonomy origin, performed by Vaz and Pereira (1930), Kohn and Bührnheim (1964), Travassos et al (1967), Feijó et al (1979), Wallet and Kohn (1987), Fabio (1988), Fernandes and Goulart (1989), with descriptions and records of digenetic trematodes; Kohn and Santos (1988) and Santos and Kohn (1992) for monogeneans; Palm (1997) and Rodrigues et al (1990) for cestodes; Vicente et al (1985) and Feijó et al (1979) for nematodes; Montú (1980) and Amado and Falavigna (1996) for copepods. Studies regarding to ecological aspects were performed by Luque et al (2000) and , on the parasitic fauna of Harengula clupeola (Cuvier) and S. brasiliensis, and Brevoortia aurea (Spix and Agassiz), respectively.…”
Between March 2010 and August 2011 were necropsied 100 specimens of Sardinella brasiliensis (Steindachner, 1879), from the coast of the State of Rio de Janeiro, Brazil (22°51'S, 43°56'W), to study their community of metazoan parasites. All specimens of S. brasiliensis were parasitized by at least one species of metazoan parasite, with mean of 68.7 ± 71.2 parasites/fish. Eleven species were collected: 3 digeneans, 1 monogenean, 2 cestodes, 3 nematodes and 2 copepods. The digenean Myosaccium ecaude Montgomery was the most abundant, prevalent, and dominant species, representing 72.7% of metazoan parasites collected, showing positive correlation between host's total length and parasite abundance. Total parasite abundance was positively correlated with host's total length. Three pairs of adult endoparasites showed significant positive association and covariation. The parasite community of S. brasiliensis showed dominance by digeneans. Sardinella brasiliensis represents new host record for most found parasite species.Keywords: parasite ecology, community structure, Clupeidae, Sardinella brasiliensis, Brazil. Palavras-chave: ecologia parasitária, estrutura comunitária, Clupeidae, Sardinella brasiliensis, Brasil.
Ecologia da comunidade dos metazoários parasitos da sardinha
“…(7) D. ventrovesiculare Gibson & Bray, 1986 has a pre-oral lobe bearing a small submedian terminal projection, a seminal vesicle devoid of a long, narrow distal duct but of a constantly large diameter between the levels of the anterior and posterior margins of ventral sucker, uterine loops not extending posteriorly to the vitellarium, the uterus and intestinal caeca not entering the ecsoma, no distinct metraterm and a convoluted excretory vesicle (Gibson & Bray, 1986). (8) D. clupeola Fernandes & Goulart, 1989 has a small body and small organs, testes distant from the ventral sucker and in tandem, gonads and vitellarium very closely situated, an entire, untwisted seminal vesicle and unlobed vitelline masses (Fernandes & Goulart, 1989).…”
Section: Identification Of the Mediterranean Specimensmentioning
Hemiurid worms from the stomach of the angler Lophius piscatorius off Corsica are described and considered to belong to a Japanese species, Dinosoma lophiomi Toman, 1973, which was originally described from an Indo-Pacific lophiid host. The apparent disjunctive distribution of this species and apparent differences in the terminal genitalia between the European and Japanese specimens are discussed. This is the first record of Dinosoma Manter, 1934 from the Mediterranean Sea. The validity of diagnostic features of Adinosoma Manter, 1947 is commented upon, and lists of records of species of Dinosoma and digeneans from L. piscatorius in the Western Mediterranean are included.
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