Description
This dataset examines the effect of three different early life rearing temperatures on the process of sex differentiation of two populations of Europea seabass from the Mediterranean Sea, and the resulting growth and sex ratio. In particular, European sea bass Dicentrarchus labrax of the north-western (NW) and south-eastern (SE) Mediterranean Sea strains were exposed to different temperatures (13, 17 or 21oC) during the larval rearing (11—51 days post hatching, dph) or nursery periods (55—95 dph), in order to examine the effects of temperature on sex differentiation and subsequent growth during the first year of life.
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How to cite
Researchers should cite this work as follows:
Journal of Fish Biology (2005) 67, 652—668 doi:10.1111/j.1095-8649.2005.00766.x, availableonline athttp://www.blackwell-synergy.com
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is Hellenic Center for Marine Research. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.
GBIF Registration
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Keywords
Metadata; Dicentrarchus; sex differentiation; growth; temperature; Metadata
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Geographic Coverage
The experiments were undertaken in two locations, using two strains of European sea bass from the north-western (NW) and south-eastern (SE) Mediterranean Sea. NW strains are from the coasts of Israel and the SE from the Lake Edku (Nile River estuarine zone, Egypt).
| Bounding Coordinates | South West [30.77, 29.553], North East [32.528, 35.112] |
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Taxonomic Coverage
European sea bass Dicentrarchus labrax
| Species | Dicentrarchus labrax (European sea bass) |
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Temporal Coverage
| Start Date / End Date | 2001-01-01 / 2003-01-01 |
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Project Data
A very important problem of the European sea bass (Dicentrarchus labrax) aquaculture industry is the occurrence of 70-99% males. Male-dominant stocks are undesirable, because males exhibit reduced somatic growth compared to females, resulting in 20-40% smaller body weight at harvest. Therefore, it is desirable to culture predominantly female stocks. The overall objective of PROBASS is to understand the mechanisms regulating sex differentiation in cultured sea bass, in order to develop methodologies to minimise the proportion of males in cultured stocks. This will result in an increase in production efficiency and profitability of the EU sea bass industry, since femaledominant stocks will reach market size earlier and produce more muscle mass. There is accumulating evidence that sex differentiation in sea bass may be under the control of complex genetic and environmental interactions.
| Title | PROBASS |
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| Identifier | Grant agreement ID: Q5RS-2000-31365 |
| Funding | EU FP5 |
The personnel involved in the project:
- Principal Investigator
Sampling Methods
The NW strain was maintained at the Institute of Aquaculture, Hellenic Center for Marine Research (previously Institute of Marine Biology of Crete), Crete, Greece, and the SE strain at the National Center for Mariculture, Eilat, Israel. The broodstock of the SE strain were the offsprings of wild fish originally collected in the mid 1980s from the brackish-water Lake Edku (Nile River estuarine zone, Egypt).Parameters measured: Sex ratio:%, Length: mm, Weight: g
| Study Extent | The experiments were undertaken in two locations, using two strains of European sea bass from the north-western (NW) and south-eastern (SE) Mediterranean Sea. The SE strain was compared with the NW because it inhabits waters of higher annual temperatures (coast of Israel and Egypt) and could have adapted to different thermal preferences. |
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Method step description:
- NORTH-WESTERN MEDITERRANEAN SEA STRAIN: Fertilized eggs were obtained on 22 February, 2001 from a spontaneously spawning stock of wild origin, exposed to ambient temperature and photic conditions throughout the year. SOUTH-EASTERN MEDITERRANEAN SEA STRAIN: Fertilized eggs were obtained on 14 March, 2001 from a broodstock maintained in tanks under natural photoperiod and a thermal regime simulating the annual fluctuations of temperature in the Mediterranean Sea.
Additional Metadata
| Alternative Identifiers | http://192.135.166.161/resource?r=fish_probass1 |
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