DAO 120:77-81 (2016)  -  DOI: https://doi.org/10.3354/dao03008

NOTE
Hematological alterations in Astyanax altiparanae (Characidade) caused by Lernaea cyprinacea (Copepoda: Lernaeidae)

Lincoln L. Corrêa1,*, Marcos Tavares-Dias2, Paulo S. Ceccarelli3, Edson A. Adriano4,5

1Universidade Federal do Oeste do Pará (UFOPA), Instituto de Ciências e Tecnologia das Águas (ICTA), Avenida Mendonça Furtado n° 2946, Santarém, PA, Brazil
2Embrapa Amapá, Macapá, AP, Brasil, Rodovia Juscelino Kubitschek, km 5, 2600, CEP 68903-419, Macapá, AP, Brazil
3Centro Nacional de Pesquisa e Conservação de Peixes Continentais (CEPTA), Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio), Rod. SP 201, km 6.5, Caixa Postal 64, CEP 13630-970, Pirassununga, SP, Brazil
4Departamento de Ciências Biológicas, Universidade Federal de São Paulo (Unifesp), Rua Professor Artur Riedel, 275, Jardim Eldorado, CEP 09972-270, Diadema, SP, Brazil
5Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Caixa Postal 6109, CEP 13083-970 Campinas, SP, Brazil
*Corresponding author:

ABSTRACT: This study describes the hematological alterations in Astyanax altiparanae associated with infestation with Lernaea cyprinacea. The study was carried out in a lagoon of the Mogi-Guaçu River, in the municipality of Pirassununga, in the state of São Paulo, Brazil. Of 46 fish examined, 45.6% had their integument infested by L. cyprinacea, with a mean intensity of 4.9 parasites per fish and a mean abundance of 2.2, giving a total of 139 recovered crustaceans. The abundance of L. cyprinacea correlated positively with the length and weight of the hosts, and the intensity of infestation was higher in female hosts. Macroscopic observation of lesions associated with the parasite showed a severe inflammatory reaction around the site of attachment of L. cyprinacea, associated with a lower relative condition factor and blood parameters. The hematocrit, number of red blood cells and thrombocytes were higher in non-parasitized than in parasitized fish. However, the hemoglobin concentration, hematimetric indices and the number of white blood cells were not influenced by infestation.


KEY WORDS: Ectoparasites · Hematology · Infestation · Continental fish


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Cite this article as: Corrêa LL, Tavares-Dias M, Ceccarelli PS, Adriano EA (2016) Hematological alterations in Astyanax altiparanae (Characidade) caused by Lernaea cyprinacea (Copepoda: Lernaeidae). Dis Aquat Org 120:77-81. https://doi.org/10.3354/dao03008

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