College of Micronesia Land Grant Program

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Archives for June 14, 2013

Palau Community College releases 360,000 mangrove crabs in conservation areas

NGIWAL STATE, PALAU.  Dr. Miguel Delos Santos, Researcher/Extension Specialist, Palau Agricultural Experiment Station.

A total of 350,000 healthy crablets of mangrove crabs locally known as “chemang” were released by the PCC–CRE staffs in two conservation areas in Palau on December 31, 2012 and January 2, 2013. About 150,000 and 200,000 crablets were released near the mangroves of Ngemai Conservation Area in Ngiwal State and the Bkulengriil Conservation Area in Ngeremlengui State, respectively. These 30 to 32 days old crablets were produced at the PCC Multi-species Hatchery in Ngermetengel, Ngeremlengui State. The purpose of this release was to enhance the mangrove crab stock in the mangrove areas and provide a steady supply of this high valued sea food commodity in the Republic of Palau.

Governor Wilson Ongos, CRE- Vice President Thomas Taro and aquaculture staff Irvin Dwight releasing crablets near the mangroves at Bkulengriil Conservation Area in Ngeremlegui State.
Governor Wilson Ongos, CRE- Vice President Thomas Taro and aquaculture staff Irvin Dwight releasing crablets near the mangroves at Bkulengriil Conservation Area in Ngeremlegui State.

These chemang crablets were products of the recently completed hatch funded research project entitled “Seed Production of Mangrove Crabs in the Republic of Palau” which is being implemented by PCC-CRE’s Aquaculture Researcher Miguel Delos Santos. Six units of 10 tons capacity tanks were stocked with a total of 2.4 million mangrove crab larva and after 30 to 32 days of larval rearing, a total of 390,000 crablets were harvested.  The remaining 40,000 crablets were reared at the outdoor nursery tanks at the PCC Hatchery and once the crablets reach about 1 to 2 inches in carapace length these will be distributed to prospective crab farmers in the country.

CRE- Vice President Thomas Taro and aquaculture staff Dannies Uehara and Lyndon Masami releasing the chemang crablets near the mangroves at Ngemai Conservation Area.
CRE-Vice President Thomas Taro and aquaculture staff Dannies Uehara and Lyndon Masami releasing the chemang crablets near the mangroves at Ngemai Conservation Area.

Hatchery-bred crablets place inside the plastic container.
Hatchery-bred crablets place inside the plastic container.

Close-up photo of a 30 to 32 days old released chemang crablets.
Close-up photo of a 30 to 32 days old released chemang crablets.

High efficiency protocols developed for in vitro multiplication of banana, sweet potato and taro, and produced elite seedlings on mass-scale

KOSRAE, FSM. Dr. Virendra M. Verma, Researcher/Extension Specialist, Kosrae Agricultural Experiment Station.

Tissue cultured banana plants.
Tissue cultured banana plants.

Apical meristem and lateral buds proved best for the establishment of aseptic cultures of banana, sweet potato and taro. Specific surface sterilization methods have been developed for particular explants. Various plant growth regulators, media composition and culture conditions have also been standardized for establishment of aseptic cultures and multiplication. Acclimatization techniques were standardized for the hardening of plantlets. High efficiency protocols have been developed for rapid multiplication and production of elite seedlings on mass-scale for different varieties of banana, sweet potato and taro. Participants knowledge and skills about micropropagation and nursery management techniques have been increased through collection and review of related literature; experimentation on micropropagation and conservation;  establishment of nursery management system; development of high efficiency  multiplication protocols; production of elite seedlings on mass-scale;  showcase of new varieties; and organization of training workshops.  Developed high efficiency multiplication protocols and nursery management systems have been utilized to produce elite seedlings of banana, taro and sweet potato in bulk quantity. Distribution of elite seedlings in bulk quantity has enabled local farmers to cultivate food crops on larger scales and therefore, has resulted in increased agricultural production.  Many youths and adults have started establishing their farms and are cultivating different varieties of banana, taro and sweet potato. The extension activities have improved knowledge, created awareness and developed skills of participants in sustainable agriculture systems. The project activities have made extension agents capable of organizing trainings, teaching farmers and providing technical assistance, and apply gained knowledge and skills in the field. Ultimately the project has developed positive attitudes, zeal for learning techniques and farming aspects, and has changed the behavior of the participants. Harvested bananas and taro were showcased during the State Agriculture Fair and were awarded with the first prize for banana/taro category.