Stocks and migrations of the demersal fish Umbrina canosai (Sciaenidae) endemic from the subtropical and temperate Southwestern Atlantic revealed by its parasites

Parasite assemblages of whitemouth croaker, Micropogonias furnieri: comparison between marine and brackish waters from the Argentine Sea

“…It should be highlighted that an effect of year of capture on the parasite community structure cannot be disregarded. The parasite community of M. furnieri was less diverse and showed lower parasite abundance than other sympatric sciaenids, such as Cynoscion guatucuapa and Umbrina canosai (Timi et al 2005;Canel et al 2019). Variations of both the number and type of prey and their relative contribution to diet determine the host trophic level.…”

“…Corynosoma australe is reported frequently in various fishes from central and northern areas of Argentine Sea (Cantatore and Timi 2015;Canel et al 2019), being highly abundant in other sciaenids (i.e., Umbrina canosai) in the same region. These sciaenid fishes may specialize for preying on intermediate hosts of C. australe (Canel et al 2019), which could contribute to their abundance in whitemouth croakers from MDP, while in fish from MCH the effect of the smaller host size or lower host age may be responsible for the lower infection rates in MCH, as this parasite is long-lived and its infections tend to the cumulative over time (Braicovich et al 2016). The adult nematode D. sciaenidicola was found in samples from both marine and estuarine habitats.…”

Conspecific migration and environmental setting determine parasite infracommunities of non-migratory individual fish

“…Whilst, differences in parasite communities have been broadly applied to distinguish fish stocks in the sea (e.g. Criscione and Blouin, 2004 ; Carballo et al ., 2012 ; Canel et al ., 2019 ), the use of metazoan parasites as biological tags in freshwater migratory fish populations has been chiefly absent (but see Criscione and Blouin, 2004 ). Although, geographically restricted, our results contribute to a better understanding of how variation in partial migration rates can drive the composition of parasite infracommunities of conspecific non-migrating fish in streams, and likely more broadly to other fish taxa in the case of generalist parasites.…”

“…Parasites have often been used to trace the migratory behaviour of their hosts and discriminate host stocks in the sea, but rarely in freshwater (e.g. Carballo et al ., 2012 ; Sheehan et al ., 2016 ; Irigoitia et al ., 2017 ; Canel et al ., 2019 ). However, migration is a heterogeneous phenomenon, varying both between and within species.…”

An Integrated Approach to Determine the Stock Structure of Spinyhead Croaker Collichthys lucidus (Sciaenidae) in Chinese Coastal Waters

“…Alternatively, parasites and otolith chemistry have been extensively used to examine the stock structure over ecological time scales (MacKenzie and Abaunza, 2014;Tanner et al, 2016). The use of parasites as biological tags to differentiate fish stocks is based on the variations under ecological and environmental conditions in the regions that the hosts inhabit, resulting in non-uniform distributions and abundances of the parasites on the intermediate and final hosts (MacKenzie and Abaunza, 2014;Canel et al, 2019;Levy et al, 2019). Otoliths, situated in the inner ear of fishes, are composed of calcium carbonate crystals and have the traits of being metabolically inert yet sensitive to environmental factors as they grow in daily increments (Campana, 1999;Campana and Thorrold, 2001).…”