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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.13 no.3 Curitiba  1996

https://doi.org/10.1590/S0101-81751996000300004 

Haematological characteristics of freshwater-reared and wild mullet, Mugil platanus Günther (Osteichthyes, Mugilidae)

 

 

Maria José T. Ranzani-Paiva; Carlos M. Ishikawa

Seção de Aquicultura, Divisão de Pesca Interior, Instituto de Pesca (CPA-SAA). Avenida Francisco Matarazzo 455, 05031-900 São Paulo, São Paulo, Brasil

 

 


ABSTRACT

Mullets, Mugilplalanus Günther, 1880. were obtained from the estua-rine area of CananÉia (São Paulo, Brazil) and from freshwater tearing tanks. For each fish the body weight, body length, gonad weight and gonad maturation stage were recorded and the allometric index (K) was calculated. Blood was collected for hematocrit (Ht), hemoglobin level (lib), total cell count (Er), and the determination of hematological indices (MCV. MCH, MCHC), as well as the differential leukocyte count (lymphocytes, monocytes, neutrophils, basophils and '"other cells"). The averages of the hematological analyses, hematological indeces, condition factor and leukocytes percentage of the specimens acclimated to fresh water were significantly higher than those of the specimens from the estuary.

Key words: Mugil plalanus, haematology, mullet, freshwater rearing


 

 

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

 

 

ACKNOWLEDGMENTS. The authors thank the technicians José Plaza and Hélio Sanches Mariscal, for collaborating with the collection of specimens, biologist Augusta Cocuzza das Eiras and graphic artist Regina Célia for drawing the graphs, and the Instituto Oceanográfico, Universidade de São Paulo, for the use of the laboratory in Cananéia.

 

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Recebido em 07.VI.1996; acelto em 22.X.1996.

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