Metazoan parasites of the jack mackerelTrachurus murphyi(Teleostei, Carangidae) in a latitudinal gradient from South America (Chile and Peru)

Abstract

Summary:The metazoa parasite fauna of the jack mackerel Trachurus murphyi Nichols 1920, obtained from seven ports from a latitudinal gradient of more than 30° (From Paita Peru: 05° 10' S to Talcahuano, Chile 36° 40' S) was quantitatively described. 21 species of metazoan parasites were recorded (Monogenea 4, Digenea 3, Cestoda 5, Acanthocephala 2, Nematoda 4, Copepoda 2, Isopoda 1). Only four parasites (Lernanthropus trachuri, Ceratothoa gaudichaudii, Corynosoma australis, Anisakis simplex) were common to the seven ports. Only twelve species reach prevalence over 5 % in at least one port. Main characteristic of the parasite fauna is the sparse of adult helminthes, specifically digenean and the dominance of larval forms, at both qualitative and quantitative levels. There are not evidence of changes in the parasite community along a latitudinal gradient, but at least Anisakis simplex (larvae) shows a trend in both, prevalence and mean intensity, increasing from north to south. KEYWORDS

Metazoan parasite fauna of the bigeye flounder, Hippoglossina macrops, from Northern Chile. Influence of host age and sex

“…The species richness in H. macrops is lower when compared with other species of flatfish from the Northern Hemisphere (Table II), mainly due to the almost complete absence of digeneans and the scarcity of cestode and nematode species in H. macrops. The lower species richness in H. macrops has also been observed in other species of fish from the northern Chilean coast (Oliva et al 1996, González & Acuña 1998, Oliva 1999.…”

“…The narrowness of the continental shelf in this geographical area has also been considered as an important abiotic factor that explains this phenomenon (Oliva 1999). Thus, a combination of biotic and abiotic factors unique to the coast of Chile may explain the paucity fauna of trophically transmitted parasites, specifically digeneans, en H. macrops.…”

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.…”

Variacion entre anos de la fauna de parasitos metazoos de Sciaena deliciosa (Tschudi, 1846) (Perciformes: Sciaenidae) en Lima, Peru

“…La longitud y sexo del pez hospedero son consideradas como variables ecológicas que se relacionan con la variación de las comunidades parasitarias (Martorelli et al, 2007;Luque & Poulin, 2008). La influencia de la longitud y sexo en las comunidades parasitarias metazorias han sido estudiadas en varios peces marinos del Pacífico Sur como Galeichthyis peruanus (Iannacone & Luque, 1993), Paralonchurus peruanus (Luque & Oliva, 1993), Menticirrhus ophicephalus (Iannacone, 1991;Luque, 1994), Paralichthys adspersus (Steindachner, 1867) (Oliva et al, 1996), Sebastes capensis (González & Acuña, 1998), Trachurus murphyi (Oliva, 1999), Hippoglossina macrops (Steindachner, 1876) (González et al, 2001), Merluccius gayi gayi (Oliva & Ballón, 2002), Seriolella violacea Guichenot (Iannacone, 2003), Cheilodactylus variegatus , Stellifer minor (Iannacone, 2004), Peprilus medius (Peters, 1869) , entre otros.…”