تأثير الـ pH على بعض الخصائص البيولوجية لأفراد النوع longispina O.F. Müller Daphnia من متفرعات القرون (Cladocera – Daphniidae ) في الشروط المخبرية

Authors

  • محمد ياسين قصاب
  • أديـب زيـني
  • ديــم ديـب

Abstract

تمت الدراسة على أفراد النوع القشري O.F. Muller Daphnia longispina عالمي الانتشار، وهو هدف للاستزراع ويستخدم كغذاء حي ليرقات الأسماك والقشريات في المزارع السمكية، حيث تم الحصول على الدفعة الأولى منها من بعض الأوساط المائية العذبة القريبة كسد السخابة وسد الحفة، وتم أقلمتها في المختبر تمهيداً لإجراء سلسلة من التجارب المخبرية عليها، حدّد فيها تأثير درجات مختلفة من الـ pH (6- 7,5 – 8,5 – 9,5 ) على بعض الخصائص البيولوجية للنوع كمعدل النمو الطولي والوزني والفترة الزمنية التي تسبق طرح أول حضنه ومعدل
عدد الحضنات ومعدل عدد البيض التي تضعها الأنثى الواحدة خلال مدة التجربة، ومدة حياة الأنثى. استمرت التجربة من 1/3/ 2010 ولغاية 1/5/2010 م. بّينت النتائج أن قيم درجة الـ pH  المناسبة لحياة أفراد هذا النوع تقع بين 7,5- 8,5  والتي يمكن اعتمادها أثناء تجارب الاستزراع مستقبلاً.

The Study was conducted on Daphnia longispina O.F. Muller which is cosmopolitan species and a goal for the cultivation as live food for larval fish and crustaceans in fish farms. The first batch of these Crustaceans ,which collected from the nearest fresh water bodies as Al-skhabh , Al-Haffa  Reservoirs, have been adapted  them in the laboratory conditions to preparation them to a series of Experiments, and select the effects of different degrees of the pH ( 6,7.5,8.5,9.5) on some biological characteristics as longevity, growth rates , the age at first reproduction, number of broods, number of eggs by a single female during the period of the experiment, and the rate of mortality of the female. Experiment lasted from 01/03/2010 until 05/01/2010. The results showed that the degree of the pH suitable for the life of Daphnia longispina lies between 7.5 to 8.5, which can be adapted during Daphnia's cultivation in the future.

Downloads

Published

2019-01-13

How to Cite

ياسين قصاب م., زيـني أ., & ديـب د. (2019). تأثير الـ pH على بعض الخصائص البيولوجية لأفراد النوع longispina O.F. Müller Daphnia من متفرعات القرون (Cladocera – Daphniidae ) في الشروط المخبرية. Tishreen University Journal -Biological Sciences Series, 34(1). Retrieved from https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/6238

Issue

Vol. 34 No. 1 (2012): العلوم البيولوجية

Section

Articles

License

Creative Commons 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:

  • 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.