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Tecnica simples de marcacao externa de reprodutores de tilapia nilotica (Oreochromis niloticus)

Leboute, Ema Magalhaes, Afonso, Luis Orlando Bertolla and Rotta, Marco Aurelio 2002, Tecnica simples de marcacao externa de reprodutores de tilapia nilotica (Oreochromis niloticus), Ciência rural, vol. 32, no. 1, pp. 147-149.

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Title Tecnica simples de marcacao externa de reprodutores de tilapia nilotica (Oreochromis niloticus)
Translated title Simple technique for external marking of nile tilapia's broodstock (Oreochromis niloticus)
Author(s) Leboute, Ema Magalhaes
Afonso, Luis Orlando Bertolla
Rotta, Marco Aurelio
Journal name Ciência rural
Volume number 32
Issue number 1
Start page 147
End page 149
Total pages 3
Publisher Centro
Place of publication Santa Maria, Brasil
Publication date 2002
ISSN 0103-8478
Keyword(s) reproduction
control
improvement
Summary With the goal of organizing a control program of Nile tilapia (Oreochromis niloticus) reproduction in laboratory, a tecnique with ceramic pearls held on dorsal musculature by transfixion with flexible sintetic string was developed. Sixty fishes with 12g average weight and 60 with 19g average weight were used. Marking was done on three positions: frontal (F), median (M), and caudal (C). Different combinations of three collored pearls were fixed on the right side (defining number), and were linked to only one pearl in the left side (defining sex), with a slack of about 1.5cm to prevent growth damage. The animals were individually identified and weigthed at 30, 60 and 130 days after surgery. Results showed that both F and M positions allowed normal growth and reproductive behavior, whereas the C position induced mortality and loss of marker in some specimens. The M position is recomended as the best, or the intermediate between F and M positions.
Language por
Field of Research 070401 Aquaculture
Socio Economic Objective 830102 Aquaculture Fin Fish (excl. Tuna)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2002, Centro
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048528

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.