Items under ownership of Abdel Rahman El Gamal, PhD
Nov 03 2011
The photo shows a female of Nile tilapia (Oreochromis niloticus) incubates an advanced stage of embryonic development as shown in the dark-colored eggs. The period till hatching will be affected by water temperature. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us …
Permanent link to this article: https://fishconsult.org/?p=954
Nov 03 2011
The photo shows a female of Nile tilapia, Oreochromis niloticus while incubating freshly fertilized eggs. The color of incubated eggs indicates the early age of embryos which could be hours or 1-2 days depending on water temperature. The pigmentation of embryos will follow this stage. Sometimes freshly fertilized eggs are called green eggs. Note: We …
Permanent link to this article: https://fishconsult.org/?p=947
Nov 03 2011
The photo shows the pigmented stage of the eggs of Nile tilapia, Oreochromis niloticus. Because tilapia eggs are opaque and have tough chorions, special preparations will be required in order to examine tilapia eggs microscopically. The eyed stage will follow the pigmented phase shown in this photo. Note: We decided not to watermark the photos …
Permanent link to this article: https://fishconsult.org/?p=941
Nov 03 2011
Sexually mature female of Nile tilapia (Oreochromis niloticus) – watch for the projection and reddishness of the genital papilla (front view). Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=930
Nov 03 2011
Full siblings of red and naturally colored tilapia resulting from mating of Nile tilapia with mutant red tilapia (this hybrid will not breed true). Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. …
Permanent link to this article: https://fishconsult.org/?p=923
Nov 03 2011
Nile tilapia (Oreochromis niloticus)- Watch the tail bands. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This will be appreciated. [important][/important]
Permanent link to this article: https://fishconsult.org/?p=910
Nov 02 2011
The photo shows an open-system for tilapia hatchery in Egypt. This type of hatcheries is based on hapas placed in earthen ponds. The advantage of such system is mainly economical as well as the ability to nurse fry in nursing hapas in this open system. However, because the spawning in this system takes place during …
Permanent link to this article: https://fishconsult.org/?p=896
Nov 02 2011
Greenhouses when used as tilapia hatcheries in temperate countries such as Egypt would enable early spawning and help extend the spawning season. Durability of plastic sheets determines the frequency of its replacement and so the cost involved. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust …
Permanent link to this article: https://fishconsult.org/?p=888
Oct 28 2011
This training on aquaculture course has been aranged and hosted in 2002 by the Ministry of Municipality and Agriculture (Qatar) with the cooperation of the Arab Organization for Agricultural Development (AOAD). The course has been designed for Qatrai trainees. Dr. Abdel Rahman El Gamal delivered several lectures in this course.
Permanent link to this article: https://fishconsult.org/?p=871
Oct 23 2011
This international workshop has been organized by Afro-Asian Rural Development Organization (AARDO) and hosted by Ministry of Agriculture and Fisheries, Sultanate of Oman. The workshop was held in Muscat during the period 8-12 September, 2007. The promotion of small-scale aquaculture was the principal objective of the workshop. Among the workshop activities, country reports were presented. …
Permanent link to this article: https://fishconsult.org/?p=671
