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Influence of salinity on embryonic development and the distribution of Sepia officinalis in the Delta Area (South-Western part of The Netherlands)
Paulij, W.P.; Bogaards, R.H.; Denucé, J.M. (1990). Influence of salinity on embryonic development and the distribution of Sepia officinalis in the Delta Area (South-Western part of The Netherlands). Mar. Biol. (Berl.) 107(1): 17-23. http://dx.doi.org/10.1007/BF01313238
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, more
Peer reviewed article  

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Keyword
    Marine/Coastal

Authors  Top 
  • Paulij, W.P.
  • Bogaards, R.H.
  • Denucé, J.M., more

Abstract
    The effect of salinity on embryonic development of Sepia officinalis (cuttlefish) in the Delta Area (South Western part of The Netherlands) was investigated in 1988/1989, and compared with data concerning the distribution of S. officinalis in the three main parts of this area: Oosterschelde, Westerschelde and Grevelingen. Embryos hatched in water collected at Yerseke (Oosterschelde), Vlissingen (Western part of the Westerschelde) and Bommenede (Grevelingen), i.e., at salinity values above 28.1permil, but not in water sampled at Hoedekenskerke and Hansweert (Middle and Eastern part of the Westerschelde; salinities below 22.0permil). Under laboratory conditions, using diluted Oosterschelde water, the highest hatching percentages of S. officinalis were found at salinities above 29.8permil. Some embryos hatched at a salinity value of 26.5permil but no hatching occurred at salinities below 23.9permil. In embryos exposed to salinity changes during late embryonic development, the developmental rate decreased at salinity values of 28.7permil or less. Below 22.4permil embryos with morphological malformations were found. It can be concluded that salinity is an important factor limiting the distribution of S. officinalis in most parts of the Delta Area, with the exception of the Western part of the Westerschelde and the Grevelingen.

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