Ayungin (Leiopotherapon plumbeus), a freshwater fish species endemic in the Philippines, is thinning in population. It is a small silver-colored fish used to be plentiful in the country’s freshwater bodies such as Laguna de Bay. Its overfishing by local fishermen mainly for duck feeds and family consumption have now made it scarce.
Considered as the tastiest fish among all the edible native freshwater species in the Philippines, ayungin is now rarely sold in the market. When available, it costs as much as P500 per kilo.
A research project at the University of the Philippines Los Baños is underway to save from threat this freshwater fish. Dr. Pablo P. Ocampo of the UPLB Limnological Research Station has established a captive breeding program to save the ayungin.
Dr. Ocampo reported that ayungin collected by the project from Laguna de Bay has been successfully maintained in the station’s concrete tanks. The collected ayungin broodstock was found responding well to a specially formulated diet combination of commercial prawn feeds and Tubifex worms.
The project is now studying ways on how to induce the ayungin to naturally spawn in an artificial environment. While simulated rain, flowing water, vegetation, sand and soil have been incorporated into the artificial environment, the research station’s findings suggest that ayungin from the wild may find it to naturally reproduce in captivity.
Nonetheless, Dr. Ocampo reported that the rearing techniques used are being refined. Experiments are underway to determine whether live feeds may help the ayungin to breed inside the tanks.
Hopefully, the captive breeding techniques being researched on may come to fruition. With success, the project can provide more Filipinos the chance to taste and savor once again the traditional delectable dishes prepared from ayungin.
Listening in: Acoustic monitoring devices detect illegal hunting and logging
14.12.2017 | Gesellschaft für Ökologie e.V.
How fires are changing the tundra’s face
12.12.2017 | Gesellschaft für Ökologie e.V.
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
14.12.2017 | Health and Medicine
14.12.2017 | Physics and Astronomy
14.12.2017 | Life Sciences