• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Indexing and Abstracting
    • Peer Review Process
  • Guide for Authors
  • Submit Manuscript
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Egyptian Journal of Aquatic Biology and Fisheries
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 29 (2025)
Volume Volume 28 (2024)
Volume Volume 27 (2023)
Volume Volume 26 (2022)
Volume Volume 25 (2021)
Volume Volume 24 (2020)
Volume Volume 23 (2019)
Volume Volume 22 (2018)
Volume Volume 21 (2017)
Volume Volume 20 (2016)
Volume Volume 19 (2015)
Volume Volume 18 (2014)
Volume Volume 17 (2013)
Volume Volume 16 (2012)
Volume Volume 15 (2011)
Volume Volume 14 (2010)
Volume Volume 13 (2009)
Volume Volume 12 (2008)
Volume Volume 11 (2007)
Volume Volume 10 (2006)
Volume Volume 9 (2005)
Volume Volume 8 (2004)
Volume Volume 7 (2003)
Volume Volume 6 (2002)
Issue Issue 3
Issue Issue 2
Issue Issue 1
Volume Volume 5 (2001)
Volume Volume 4 (2000)
Volume Volume 3 (1999)
Volume Volume 2 (1998)
Volume Volume 1 (1997)
Bakhoum, S. (2002). OCCURRENCE OF NATURAL HYBRIDS BETWEEN NILE * TILAPIA, Oreochromis niloticus (L.) AND BLUE TILAPIA Oreochromis aureus ( Steind.) IN LAKE EDKU, EGYPT.. Egyptian Journal of Aquatic Biology and Fisheries, 6(3), 143-162. doi: 10.21608/ejabf.2002.1754
Shnoudy Bakhoum. "OCCURRENCE OF NATURAL HYBRIDS BETWEEN NILE * TILAPIA, Oreochromis niloticus (L.) AND BLUE TILAPIA Oreochromis aureus ( Steind.) IN LAKE EDKU, EGYPT.". Egyptian Journal of Aquatic Biology and Fisheries, 6, 3, 2002, 143-162. doi: 10.21608/ejabf.2002.1754
Bakhoum, S. (2002). 'OCCURRENCE OF NATURAL HYBRIDS BETWEEN NILE * TILAPIA, Oreochromis niloticus (L.) AND BLUE TILAPIA Oreochromis aureus ( Steind.) IN LAKE EDKU, EGYPT.', Egyptian Journal of Aquatic Biology and Fisheries, 6(3), pp. 143-162. doi: 10.21608/ejabf.2002.1754
Bakhoum, S. OCCURRENCE OF NATURAL HYBRIDS BETWEEN NILE * TILAPIA, Oreochromis niloticus (L.) AND BLUE TILAPIA Oreochromis aureus ( Steind.) IN LAKE EDKU, EGYPT.. Egyptian Journal of Aquatic Biology and Fisheries, 2002; 6(3): 143-162. doi: 10.21608/ejabf.2002.1754

OCCURRENCE OF NATURAL HYBRIDS BETWEEN NILE * TILAPIA, Oreochromis niloticus (L.) AND BLUE TILAPIA Oreochromis aureus ( Steind.) IN LAKE EDKU, EGYPT.

Article 7, Volume 6, Issue 3, September 2002, Page 143-162  XML PDF (1.68 MB)
Document Type: Original Article
DOI: 10.21608/ejabf.2002.1754
View on SCiNiTO View on SCiNiTO
Author
Shnoudy Bakhoum
National Institute of Oceanography and Fisheries, Alexandria, Egypt
Abstract
The Nile tilapia {Oreochromis niloticus),b\vLt tilapia, {Oreochromis aureus) and specimens showing intermediate external appearance to both species were sampled from Lake Edku and examined for differences in morphological characteristics to determine the natural hybrids of these species. The results of univariate analyses indicated highly significant differences of biotnetric characters between the hybrid groups and parental species. Multivariate analysis of meristic and morphometric values showed significant differences between all examined fish groups. The number of biometrics characters, which revealed significant differences between Nile tilapia and its hybrids, ranged from four to five out of seven meristic and twelve to fifteen out of twenty-one morphometric characters. Meanwhile, between blue tilapia and hybrids there were two to five out of seven and fourteen to sixteen out of twenty-one meristic and morphometric characters respectively. Also discriminate function analysis indicated that the biometric variables giving the most separation between the hybrid and parental species were dorsal fin spines, vertebrae number, pectoral fin length, postorbital length, head length and interorbital width. A classification to groups using the above functions derived from morphometric data yielded stronger separation than meristic counts for the examined groups. The results indicated the existence of natural hybridization between O. niloticus and 0. aureus in Lake Edku.
Keywords
Cichlidae; Oreochromis niloticus; Oreochromis aureus; Hybridization; Biometrics; Lake Edku; Egypt
Main Subjects
Fisheries
Statistics
Article View: 501
PDF Download: 1,060
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.