A Biological and Ecological Study of Ruditapes decussatus (Bivalvia, Veneridae) in Lattakia City Coast
Abstract
This research aimed to study the growth and reproduction of Ruditapes decussatus, and determine the suitable conditions for its culture. The individuals were collected from the intertidal zone near the Higher Institute of Marine Research during September 2011 till June 2012 once a month. Samples of sea water were also collected to study phytoplankton which feed the Ruditapes decussatus, and its abundance. The laboratory study conducted included distinguishing between males and females of all individuals, conducting morphometric measurements of shells to determine wet and dry weight of the soft body, determining period of sexual maturity and condition index, and evaluating the growth condition through the index. GSI (gonad somatic index) mean values refer to the existence of two peaks referring to two reproduction periods: one in fall and another in spring.
While the mean values refer to adequate food and growth. The study also shows the possibility of acclimatization this species easily at laboratory conditions. The abundance values of phytoplankton ranged between (2777.778 - 7291, 667 Cell/L) reaching its highest value during spring (7921, 667 Cel/L).
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.