Ecologia das comunidades de metazoários parasitos, do xaréu, Caranx hippos (Linnaeus) e do xerelete, Caranx latus Agassiz (Osteichthyes, Carangidae) do litoral do estado do Rio de Janeiro, Brasil

Abstract

necropsied to study their metazoan parasites. Ali specimens of C. hippos were parasi ti zed, and the majority of specimens of C. la/us (96.4%) were paras itized by one 01' more metazoan species. Nineteen species ofparas ites were co llected in C. hippos: 5 digeneans, 5 monogeneans, 2 cestodes, 5 nematodes, and 2 copepods. Seventeen spec ies ofparas ites were coll ected in C. la/us: 6 digeneans, 2 monogeneans, 3 cestodes, 4 nematodes, and 2 copepods. The endoparas ites (digeneans, cestodes, and nematodes) were the majority, 76.4% and 63.3%, of the total number of parasite spec imens co llected in C. lúppos and C. la/us, respectively . The monogeneans Allopyl'agl'aphol'Us hippos (Hargis, 1956) and Cemocolyle carangis (MacCallum, 1913) were the most dominant species with the highest parasitic prevalence in the parasite com munity of C. hippos and C. la/us, respectively. The metazoan parasites of the two host species showed the typ ic al overdi spersed pattern of distribution. Bucephalus val'icus Manter, 1940, A. hippos, Pl'%micl'oco/yle mirabilis (MacCallum, 19 18), ClIc ll11anus pulcher-I'imus Barreto, 19 18, and Lernon/hropus gigan/eus Knj>yer, 1863 had a posi tive correl atio n on ly between the host's totallength and abundance andJor prevalence in C. hippos. Bucephalus varicus, Terges/ia pec/ina/a (Li nton, 1905), C. carangis, and Pseudolerranova sp. had a pos iti ve correlation between the host' s total length and abundance and/or prevalence in C. la/uso In C. hippos, the copepod Coligus I'obus/us Bassett-Smith , 1898 had the highest values ofprevalence and abundance in the fema le hosts. No parasi te species showed influence ofthe host 's sex on their prevalence and abundance in C. la/uso The mean diversity and the paras ite species richness of the parasite infracommunities of C. hippos and C. latus were not significantly different. Only the parasite species diversity 01' C. hippos was correlated with the host's total length ; in both host species the parasite diversity did not showed ditTerences in relation to the sex of the host. Only one pair of ectoparas ite species, A. hippos -P. mirabilis, showed signiticant positive co-occurrence and covariation in the parasite infracommuniti es of C. hippos. Two endoparasite species, B. varieus -Parahemiul'us merus (L inton, 1910), showed negative co-occurrence and pos itive covariation; and the pair B. varieus -Pseudoterranova sp. had positive co-occurrence and covariation in the 1) Trabalho desenvolvido com auxílios do CNPq, CAPES e FAPERJ.

Larvas de nematoides e cestoides de importí­¢ncia higiênico-sanitária em Lopholatilus villarii (Actinopterygii) no Estado do Rio de Janeiro, Brasil

“…were similar to those of specimens from Caranx hippos (Linnaeus, 1766) (LUQUE and ALVES, 2001), G. brasiliensis (ALVES et al, 2002 and Tylosurus acus (Lacépède, 1803) (TAVARES et al, 2004), and to those of P. decipiens from G. brasiliensis ; and were lower than those from Caranx latus Agassiz, 1831 (LUQUE andALVES, 2001).…”

Parasite biodiversity and its determinants in coastal marine teleost fishes of Brazil

“…Thus the data do not suffer from the problems associated with data sets compiled from different sources and based on different methods. Quantitative information on the prevalence and intensity of infection by different parasites and on parasite community descriptors has been published previously for about half of the fish species in our data set Knoff, Luque & Amato, 1997 ;Cezar & Luque, 1999 ;Silva et al 2000 ;Luque & Alves, 2001 ;Tavares et al 2001Alves & Luque, 2001 ;Alves et al 2002 a, b;Paraguassú , Luque & Alves, 2002 ;Cordeiro & Luque, 2004 ;Tavares & Luque, 2004 a, b). The present analysis is the first one that combines all these data ; the entire data set is shown in Table 1.…”

Hematological characteristics associated with parasitism in Pikeperch Sander lucioperca (Percidae) from Anzali Wetland

“…This means that as fish grows, chances of infection increase, because a long period of exposition to infective stages, and the amount of food it consumes, which including the larval stages of parasite (Polyanski 1961). According to Luque and Alves (2001), correlation between the host size and parasite prevalence and intensity is a pattern widely recorded in marine fish and documented with numerous cases in freshwater fishes. Barzegar and Jalali (2009) reported S. lucioperca and Perca fluviatilis (European perch) were infected with A. percarum in Sefid-rud River and in Anzali Wetland.…”