Produção Nacional
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
2001; Sociedade Brasileira de Zoologia; Volume: 18; Issue: 2 Linguagem: Inglês
10.1590/s0101-81752001000200011
ISSN1806-969X
AutoresJosé L. Luque, Dimitri Ramos Alves,
Tópico(s)Bird parasitology and diseases
ResumoCommunity ccology of metazoan parasites of the crcvalle jack, Cara/lx hippos (Linnaeus) and the horse-cye jack, Caranx [alus Agassiz (Osteichthyes, Carangidae) from the coasta l zone ofthe State ofRio de Janeiro, Brazil.Sixty specimens of Cal'anx hippos (Li nnaeus, 1766) and tifty-five specimens of Ca ranx la/us Agass iz, 1831 collected from the coasta l zone of the State of Rio de Janeiro (21-23°S, 41-45°W), Brazil, from October 1998 to October 1999, were 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
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