Dinosoma clupeola sp. n. (Hemiuridae) and Pseudoacanthostomum floridensis Nahhas & Short, 1965 (Acanthostomidae), digenetic trematodes in Brazilian Marine fishes

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.<br>Dinosoma clupeola sp. n. é descrito de Harengula clupeola, e assemelha-se a D. hawaiiense Yamaguti, 1970, da qual difere pela vesícula seminal que é inteira, sacular alongada, e não signóide e torcida em duas ou três porções, pelo tegumento que é fracamente plicado, e não liso, pelo meneor tamanho do corpo e dos órgãos internos e pelos ovos que são ligeiramente maiores e mais estreitos. Pseudoacanthostomum floridensis Nahhas & Shsort, 1965 é referido em um novo hospedeiro: Netuma barba

Community ecology of the metazoan parasites of white sea catfish, Netuma barba (Osteichthyes: Ariidae), from the coastal zone of the state of Rio de Janeiro, Brazil

“…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).…”

“…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.…”

Community ecology of the metazoan parasites of Brazilian sardinella, Sardinella brasiliensis (Steindachner, 1879) (Actinopterygii: Clupeidae) from the coastal zone of the State of Rio de Janeiro, Brazil

“…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.…”

The occurrence of the Japanese species Dinosoma lophiomi Toman, 1973 (Digenea: Hemiuridae) in Lophius piscatorius (Teleostei) from the western Mediterranean

“…(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).…”