The inserted pictures belong to Omani abalone, Haliotis mariae. In the absence of external signs of sexual dimorphism for the shell structure, the sexing of abalone cannot be done based on the external differentiation and is only determined through the visual inspection of gonads which could be seen if the foot and mantle are forced …
Tag: Abalone
Permanent link to this article: https://fishconsult.org/?p=15107
Mar 03 2015
Napping Sea Lion in the territory of an abalone farm (Monterey, USA)
During my visit to the abalone farm in Monterey, California, I took this picture for this napping sea lion. The abalone grow-out cages are located in the water several meters under the napping animal who reached the farm along with the morning high tide leaving the animal behind in the …
Permanent link to this article: https://fishconsult.org/?p=12445
Mar 02 2015
Nursed red abalone while grazing on sea lettuce (Ulva sp.)
Credit: Peter Hain (Monterey, USA) Red abalone, Haliotis rufescensis an important fishery resource in California, where several hatcheries are producing juveniles of this species. This picture has been taken in a nursing tank in one of those hatcheries located in Monterey region, California. Diatom is the starting feed for baby abalone. As abalones grow on the …
Permanent link to this article: https://fishconsult.org/?p=12442
Jan 23 2015
The day of abalone in Monterey, California)
Dear Friends,Yesterday (Wednesday, 22 January) was a long field visit which lasted 14 hours since I left Campbell where we stay to Monterey where the abalone projects exist and back to Campbell. The rich information gained through the visit would justify the lengthy hours spent. When …
Permanent link to this article: https://fishconsult.org/?p=12249
Aug 09 2014
Growing Gracilaria to feed abalone in Thailand
Photo credit: Kevin Fitzsimmons (USA) Review: Abdel Rahman El Gamal (Founder of the website) In Asia including Thailand, several red seaweeds such as Gracilaria have been identified along with their natural habitats. Gracilaria are harvested in large quantity as a commercial source of agar. The increasing demand on agar encouraged the Gracilaria farming to meet the …
Permanent link to this article: https://fishconsult.org/?p=11495
Mar 06 2014
Abalone crawling – Video
Source: www.fishconsult.org The specimen shown in this video is Omani abalone, Haliotis mariae. In nature and in situations of abundant algae supply, the adult abalone tends to stay in their location, waiting for their food to of the algae to be drifted to them by water currents. However, if food turns scarce, abalone crawls over …
Permanent link to this article: https://fishconsult.org/?p=10480
Feb 23 2014
Sexing and reproductive habits of abalone with a special emphasis on Omani abalone
Abalones are dioecious (separate male and female sex) as abalones develop their eggs and sperm in gonads located under the soft skin visible between the foot and the shell. There is no sexual dimorphism of the shell structure and so the sexing of abalone cannot be done based on the external differentiation and is only …
Permanent link to this article: https://fishconsult.org/?p=10413
May 14 2013
Red abalone, Haliotis rufescens (Distribution, biology, utilization and conservation)
Photo credit: Oscar Del Valle Ayala (Peru) Via: Wilder Rodriguez Arteaga (Peru) Review: Abdel Rahman El Gamal (Founder of the website) Introduction: The red abalone, Haliotis rufescens, is a snail-like, univalve species of a very large edible sea snail; it is a marine gastropod mollusk in the family Haliotidae. Historically, red abalone has been the …
Permanent link to this article: https://fishconsult.org/?p=7858
Nov 11 2011
Culture of abalone (Haliotis asinine) in concrete ponds at Prachaubkririkun Coastal Fisheries Research and Development center (Thailand)
Credit: Proyrat Chaowajaroenpong and Ong-art Kumprasert (Thailand) The main features of the culture of abalone (Haliotis asinine) in concrete pond include a water depth of not more than 1.5 meter, clear water, and flow through water of 5-10 liter/min.; aeration of pond water is practiced. Water pollution is considered the main obstacle that negatively affects hatchery …
Permanent link to this article: https://fishconsult.org/?p=1383