• English
    • français
    • español
    • русский
  • English 
    • English
    • français
    • español
    • русский
  • Login
View Item 
  •   Home
  • AFRICA
  • Egypt
  • National Institute of Oceanography and Fisheries
  • Egyptian Journal of Aquatic Research
  • View Item
  •   Home
  • AFRICA
  • Egypt
  • National Institute of Oceanography and Fisheries
  • Egyptian Journal of Aquatic Research
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of AquaDocsCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

My Account

LoginRegister

User Information

About AquaDocsPoliciesUser GuidesOther Aquatic Repositories

Statistics

Display statistics

Induce spawning and larval reading of gilthead sea bream (sparus aurata)collected from fish farms, egypt

  • CSV
  • RefMan
  • EndNote
  • BibTex
  • RefWorks
Thumbnail
Name:
Text.pdf
Size:
143.2Kb
Format:
PDF
Description:
Published version
Download
Thumbnail
Name:
Arabic.pdf
Size:
21.02Kb
Format:
PDF
Description:
Arabic Summary
Download
Average rating
 
   votes
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
 
Your vote was cast
Thank you for your feedback
Author
Aziz, F.K.
Zaki, M.I.
El-Absawy, M. El-G.
Date
2007

Metadata
Show full item record
Alternative Title
التفريخ الصناعي ورعاية اليرقات لاسماك الدنيس في بعض المزارع السمكية بمصر
Abstract
Sparus aurata females in captivity were injected with human chorionic gonadotropin hormone (HCG), pituitary extraction and both them during the spawning season. First hormonal treatment was applied as cumulative doses required for successful ovulation ranged from 4500 to 7500 IU\fish, the maximum fertilization percent was 71. The ovulation period under the influence of this treatment extended up to 14 days. In the second experiment, the total dose requirement for successful ovulation ranged from 2 to 4 pituitary extractions. Fish and the maximum fertilization percent recorded was 81, while the longest ovulation period obtained was 15 days. In the third experiment the total doses required for successful ovulation ranged from 2 pituitary extractions and 4500 IU to 3 pituitary extraction and 7500 IU/fish. The maximum fertilization percent recorded was 88, while the ovulation period was extended up to 23 days. The combined treatment gave the highest value of fertilization percent and the longest ovulation period. Moreover, the results from the combined treatment showed the highest value of hatching percent of 83.5 when compared to those of HCG was 70.5 % or pituitary extraction was 80%. The maximum ovulation and fertilization percent was recorded at temperature ranging between 10 and 16°C. The survival percent of Sparus auratus larvae up to 10 days old after hatching were greatly affected by both temperature and photoperiod. The proper temperature ranged between 17 – 22 °C recording the highest survival percent 29 at natural photoperiod (8 h. light), while it increased to35% under continues illumination. The larvae starts feeding with rotifer at third day old were measured 0.2 mm. At 11th day old the post larvae measure 3.1 mm. and being reared to accept next feeding regime represented by Artemia nauplii.
Journal
Egyptian journal of aquatic research
Volume
33
Issue/Article Nr
1
Publisher or University
National Institute of Oceanography and Fisheries, Egypt
Resource/Dataset Location
http://www.nodc-egypt.org/
URI
http://hdl.handle.net/1834/1908
Collections
Egyptian Journal of Aquatic Research
AfReMaS

entitlement

 

DSpace software (copyright © 2002 - 2023)  DuraSpace
Quick Guide | Contact Us | Disclaimer
Open Repository is a service operated by 
Atmire NV
 

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.