Reproductive performance in female strains of Nile tilapia, Oreochromis niloticus

Reproductive performance in female strains of Nile tilapia, Oreochromis niloticus

The Nile tilapia is among the most cultivated tropical fish in the world, yet little is known about the variations in reproductive characteristics among different strains. There is an interest in evaluating the reproductive performance of females of three tilapia strains. All strains were represente...

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Bibliographic Details
Published in:Aquaculture international Vol. 21; no. 6; pp. 1291 - 1300
Main Authors: Almeida, Diones Bender, da Costa, Marco André Paldês, Bassini, Liane Ney, Calabuig, Cecilia Irene Pérez, Moreira, Carla Giovane Avila, Rodrigues, Marília Danyelle Nunes, Pérez, Harold Julian, Tavares, Rafael Aldrighi, Varela, Antonio Sergio, Jr, Moreira, Heden Luiz Marques
Format: Journal Article
Language:English
Published: Dordrecht Springer-Verlag 01-12-2013
Springer Netherlands
Springer Nature B.V
Subjects:
Animals
Biology
Biomedical and Life Sciences
body length
Brackish
Eggs
Females
fish culture
Freshwater & Marine Ecology
Genetic engineering
Hatching
Life Sciences
morphometry
Oreochromis niloticus
Reproduction
reproductive performance
Spawning
Tropical fish
Water temperature
Zoology
Brazil
Reproduction
Spawns
Larviculture
Morphology
Aquaculture
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Summary:The Nile tilapia is among the most cultivated tropical fish in the world, yet little is known about the variations in reproductive characteristics among different strains. There is an interest in evaluating the reproductive performance of females of three tilapia strains. All strains were represented in equal proportion (n = 225), being named as Supreme (SUP), Premium Aquabel (PA), and Chitralada (CHI). These fish were cultivated for 7 weeks in the Aquabel Pisciculture Station (Brazil), from January to March 2011. The PA was the largest strain, with the highest values in all the morphometric parameters we analyzed (weight, total length, standard length and body depth). Among the evaluated reproductive parameters, the PA strain differed significantly from the other two in number and weight of eggs/female, volume of eggs/spawn and number of eggs/kg of fish. The percentage of non-spawning females in the SUP and CHI strains differed significantly from one another, while results for PA showed intermediate values and no significance compared to the other strains (P > 0.05). Among the reproductive parameters analyzed, the percentage of spawned females/week, more than one spawns during 7 weeks, and hatching rate showed no significant differences between strains (P > 0.05). There was a significant correlation (r = 0.69) between water temperature and percentage of spawned females/week. When evaluating the interval between two consecutive spawns, we observed that periods of 21 days were the most frequent in all strains. In conclusion, the strain that showed the best results in all morphometric and in most reproductive parameters we evaluated was the PA.
Bibliography:http://dx.doi.org/10.1007/s10499-013-9630-0
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0967-6120
1573-143X
DOI:10.1007/s10499-013-9630-0