The parasita Fauna of Scomber japonicus Houttuyn, 1782 (Pisces: Scombridae) in two zones of the Argentine Sea

Digenea and acanthocephala of elasmobranch fishes from the southern coast of Brazil

“…C. australe was originally described parasitizing Neophoca cinerea and was also reported from other marine mammals from Australia (Golvan 1959, Yamaguti 1963, Petrochenko 1971b, Smales 1986). In South America, C. australe had been reported in teleost fishes from Pacific (Peru) to Atlantic waters (Uruguay) (Vergara & George-Nascimento 1982, Zdzitowiecki 1989, Cremonte & Sardella 1997, Tanzola et al 1997, Oliva 1999. In Brazil these acanthocephalans occurred in teleost fishes: Corynosoma sp.…”

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

“…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.…”

“…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. Similar studies on populations of R. kanagurta from different geographic regions need to be undertaken to find support to the above hypothesis of latitudinal differences in the parasite communities of parasites proposed by Rohde (1999) for ectoparasites of marine fish and also to determine the existence of different population stocks of R. kanagurta.…”

Helminth parasites of the Atlantic chub mackerel, Scomber colias Gmelin, 1789 from Canary Islands, Central North Atlantic, with comments on their relations with other Atlantic regions

“…was exclusive of Madeira and Azores Islands (Table I), whereas in other regions of the North Atlantic the cestode fauna was represented by other species. The acanthocephalan Rhadinorhynchus pristis was common in Central North-East Atlantic, also with significant differences in prevalence, but absent from the Argentinean coastal waters (Cremonte andSardella 1997, Oliva et al 2008). As the identification of Anisakis larvae to species level was only done for the specimens collected from the Canary Islands (present results) and Madeira (Pontes et al 2005), the values of prevalence given in Table I, are representative of all individuals of the genus Anisakis.…”

“…Nevertheless different values of prevalence with some helminth parasites were also found between Madeira Island and other regions of Central North-East Atlantic, which appeared to be independent of fish size (Table I) Tables I and II). Furthermore this monogenean appears to be common in subtropical North-and Southeastern coasts of the Atlantic (Shukhgalter 2004), but not in the Southwest Atlantic (Rohde and Watson 1985, Cremonte and Sardella 1997, Alves et al 2003, Oliva et al 2008. Other monogeneans, e.g.…”