J.T. Timi results 12
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Assessing the role of host traits as drivers of the abundance of long‐lived parasites in fish‐stock assessment studiesNARA Subscribed
In order to identify the best tools for stock assessment studies using fish parasites as biological indicators, different host traits (size, mass and age and their interaction with sex) were evaluated as descriptors of cumulative patterns of both parasite abundance and infracommunity species richness. The effect of such variables was analysed for a sample of 265 specimens of Percophis brasiliensis caught in the Argentine Sea....
Homogeneity of parasite assemblages of Dules auriga (Serranidae) in hydrographically heterogeneous sitesNARA Subscribed
Parasite assemblages of Dules auriga are described for the first time from samples caught during research cruises in two localities of the Argentine–Uruguayan Common Fishing Zone ( AUCFZ ) and are compared with four additional samples collected by commercial catches from the same region. A total of 178 fish were examined and 13 parasite species were found. This showed low species richness, a condition observed in some other sm...
Stocks and seasonal migrations of the flounder Xystreurys rasile as indicated by its parasitesNARA Subscribed
The aims of this study were (1) to compare the structure and composition of parasite assemblages of the flounder Xystreurys rasile in two regions of the Argentine Sea in order to evaluate the hypothesis for the existence of different stocks, and (2) to test the hypothesis for X. rasile migration from the Argentine–Uruguayan Common Fishing Zone ( AUCFZ ) towards more southern waters during spring. Parasitological evidence shows...
Similarity in parasite community structure may be used to trace latitudinal migrations of Odontesthes smitti along Argentinean coastsNARA Subscribed
The aims of this study were to determine the existence of migratory movements and to identify ecological stocks of the silverside Odontesthes smitti along its distribution in the Southern Atlantic Ocean, using metazoan parasites as biological tags. Samples were obtained from San José Gulf (SJ) (42° 25′ S; 64° 07′ W) and Nuevo Gulf (NG) (42° 47′ S; 65° 02′ W) in north Patagonia during winter and summer and in waters off Mar del...
The use of parasites as biological tags allowed the identification of two stocks of Brazilian sandperch Pinguipes brasilianus , in the Bonaerense region of the Argentine Sea. A total of 156 adult specimens of P. brasilianus were examined for parasites. Temporal variability in parasite burdens was assessed from fish caught seasonally in coastal waters of two zones, south Bonaerense (during autumn and winter) and north Bonaerens...
Parasites as biological tags for stock discrimination of the Brazilian flathead Percophis brasiliensis in the south‐west AtlanticNARA Subscribed
Three stocks of the Brazilian flathead Percophis brasiliensis were identified on the coast of Argentina and Uruguay using parasites as biological tags. A total of 177 fish were examined and 23 parasite species were found. Fish were caught in four zones: north of the Argentine–Uruguayan Common Fishing Zone (34°30′–36°30′ S; 53°30′–56°00′ W), south of the Argentine–Uruguayan Common Fishing Zone (38°08′ S 57°32′ W), El Rincón zon...
Parasites of the Brazilian sandperch Pinguipes brasilianus Cuvier: a tool for stock discrimination in the Argentine SeaNARA Subscribed
The use of parasites as biological tags allowed the identification of three stocks of Brazilian sandperch Pinguipes brasilianus in the Argentine Sea. A total of 156 specimens caught during spring 2006, off the coasts of Buenos Aires Province (38°27′ S; 57°90′ W, n = 54), San Matías Gulf (42° S; 65°10′ W, n = 52) and Nuevo Gulf (42°09′ S; 64°05′ W, n = 50), were examined for parasites and 21 species were found, including monoge...
Parasites of Cynoscion guatucupa along South American Atlantic coasts: evidence for stock discriminationNARA Subscribed
Two stocks of striped weakfish Cynoscion guatucupa in the south‐west Atlantic Ocean, were identified using parasites as biological tags. A total of 297 fish caught in Brazil, Uruguay and Argentina, contained 29 species of metazoan parasites. Univariate analysis on parasite populations, as well as multivariate discriminant analysis, calculated for juvenile and adult fish separately, allowed the identification of the two stocks,...
Parasites of Argentine hake in the Argentine Sea: population and infracommunity structure as evidence for host stock discriminationNARA Subscribed
The use of parasites as biological tags allowed the identification of three stocks of Argentine hake Merluccius hubbsi in the south‐west Atlantic. A total of 344 fish caught in the Argentine‐Uruguayan Common Fishing Zone, San Matías Gulf, San Jorge Gulf and Patagonian Shelf, were examined for parasites and 26 species were found. Univariate analysis on both parasite populations and infracommunity descriptors, as well as a discr...
Parasites of Argentine anchovy in the south‐west Atlantic: latitudinal patterns and their use for discrimination of host populationsNARA Subscribed
Four stocks of Argentine anchovy Engraulis anchoita in the south‐west Atlantic, south of 34°S were identified by the use of parasites as biological tags. A total of 671 fish were examined for parasites and 19 parasite species were found in 664 Argentine anchovies. The parasite populations and both infra‐ and component communities showed marked latitudinal gradients. Cluster analyses allowed the identification of four groups, o...
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