Integration of Habitat Conservation and Fisheries Management in the South China Sea and Gulf of Thailand through Fisheries Refugia. Integration of Habitat Conservation and Fisheries Management in the South China Sea and Gulf of Thailand by.
Regional Guidelines on Indicators for Sustainable Management of Fisheries
Types of fishery refuges in relation to the general life cycle of demersal marine fishes (Pernetta et al., 2010). In addition, the corresponding indicators and criteria for the sustainable management of the fishery refuge have also been identified (Box 2) (SEAFDEC, 2022).
About the Author
Enhancing the Reproductive Performance of Cultured Shrimp
Sex pheromones, the shrimp scent for mating
Matings were observed only in matings where the female originated from the wild and not when the females were domesticated, and wild-line males pursued wild-line males more strongly than domesticated-line males. Specifically, wild line males spent more time "under" newly molted females than domesticated line males. It has been speculated that the reduced rate of pursuit behavior of the shrimp was probably due to the lower amount of ineffective pheromones produced by the domesticated female shrimp.
It may also be that domesticated males have a reduced ability to perceive or process chemicals compared to their wild counterparts.
Nutritional requirements of male and female Penaeid broodstock
The mix of these chemicals changes along with species divergence or convergence, such that related species would differ by only two amino acids (Rittschof. & Cohen, 2004). It is also noteworthy that the provision of a well-formulated diet without polychaete supplementation resulted in similar maturation rate sperm quality, highlighting the differences in the nutritional requirements of male and female strains during maturation. Such variation in nutritional requirements for male and female growth was also reported for other crustaceans, such as those for P.
Thus, sex-specific nutritional manipulation can be performed to address the exact needs of male and female broodstock.
Maturation and mating: a match between naive and conditioned broodstock
Differences in mating behavior between naive and conditioned breeding strains were also compared using the same breeding strains. No significant difference was detected in the number of probes and touches between naive and conditioned males, but significant differences were noted in the number of chases, fights, and summations. Detection of this chemical signal is vital for closed thylecum species to secure a mating partner during the limited time the female is in the molting phase.
The desensitization to sex pheromones observed in insects could be the same condition as in the conditioned P.
Conclusion and Way Forward
Continued exposure to molting females and associated sex pheromones may have influenced male identification of molting females. The reduced initiation of reproductive-related behaviors in conditioned male breeding strains, leading to poor mating success, may be due to prolonged exposure to mating-inducing odors or sex pheromones. Isolation and identification of sex pheromones used by crustaceans is a challenging research endeavor, as evidenced by the limited scientific output in this area.
However, pheromones, specifically sex pheromones, play a significant role in an organism's successful reproductive performance and possible application in aquaculture, especially in breeding, will be a major hit for the industry.
Acknowledgments
Nutritional strategies for efficient captive reproduction of Indian white shrimp, Penaeus indicus (H. Milde Edwards, 1837) (Unpublished doctoral dissertation). The influence of monosex rearing on sexual maturation and reproductive behavior of Indian white shrimp, Penaeus indicus broodstock. Interactive influence of dietary protein and lipid on maturation of Indian white shrimp, Penaeus indicus broodstock.
Evaluation of maturation promoting factor in polychaete (Marphysa sp.) on Indian white shrimp, Penaeus indicus female breeding stock.
Reviving the Giant Featherback (Chitala lopis) in Indonesia
Conservation Efforts
Exploring the Aquaculture Potential
Nevertheless, the culture of the giant featherback is still in its development stage and the spawning technology was not yet developed (Sukendi et al., 2019). As the culture of the giant featherback is still in an experimental stage, the farming of this fish is predicted to be economically unprofitable due to low seed yield. Furthermore, since the growth is also slow, raising the fish will require more feed.
Through its corporate social responsibility (CSR) program, the company has partnered with the Research Institute for Inland Fisheries and Extension (RIIFE) to conserve the germplasm of giant featherback and other native fish species in South Sumatra.
About the Authors
Way Forward
Impacts of Lockdowns on Livelihoods of Small-scale Fishers: boon or bane?
Illegal fishing on the rise
The months of March through May are the prime fishing season in the Philippines, prior to the onset of the monsoon in July, when sailing conditions become difficult. In fact, the satellite data indicated a spike in the number of commercial fishing vessels operating in waters within 15 km of the Philippine coast – an area prohibited for commercial fishing. Although VIIRS detection did not automatically indicate the presence of illegal fishing activity, the most important factor was where the light sources occurred, as commercial fishing in the Philippines is not allowed within 15 km of the coast.
According to the Philippine Fisheries Statistics, these provinces are prolific producers of sardines, together with nearly 11,500 t in 2018, or 13% of the country's total fishery production.
Continued safeguarding of the environment
Three-quarters of the country's waters are considered overfished, and wild-caught fish yields have declined in recent years, prompting the Philippine government to impose closed fishing seasons, strengthen the aquaculture sector and accelerate the declaration of protected areas. marine. The commercial fishing sector is strongly opposed to the request, she said, "but that won't matter" if there is a political will to act. As in the case of Siete Pecados, boat operators for PPSRNP have suffered the most, as 314 of them have been left in limbo as their boats have remained idle due to the blockage.
While the government is expected to ease the lockdown by May 1, 2020, the shutdown of tourism activities will continue for the duration of the pandemic and cut off the main source of income for thousands of tourism-dependent families here, Mr.
Monitoring work continues
Palawan is considered a low-risk area for COVID-19 infections, but as the pandemic cripples Palawan's tourism industry, resilient ecotourism communities embedded in biodiversity hotspots like Siete Pecados and PPSRNP have found sustainable ways to survive the crisis, while they did not have to abandon their initiatives to preserve the environment.
Back to basics
If the communities stop being vigilant, the long-term effect will be very large." Austria said, adding that they have asked commercial markets in the city to buy their catch so that it does not spoil and members will have an alternative source of cash. Nevertheless, local residents were hoping against hope that the tourism industry would recover soon, or at least in time for the next high season, which begins in the fourth quarter of 2020.
The Palawan Provincial Office earlier said that without a vaccine, inbound and outbound travel in the province is prohibited.
COVID-19 hits seafood sales
The pandemic has forced many to realize how equally important these forgotten and underappreciated sectors are, especially now that the tourism industry has declined.” Community-based tourism has improved once economically disadvantaged villages in the province, but many believe that regaining economic momentum remains a challenge in the age of COVID-19. Mazo said, adding that most foreign visitors to the site come from European countries such as Spain and France, which are still struggling with the pandemic. Nevertheless, the Ministry of Marine Affairs and Fisheries (MMAF) indicated that it would work to support fish sales and provide financial assistance to fishermen in the meantime.
Stakeholders need not worry as the MMAF continues to monitor every event in the field and is ready to be involved at any time,” he exclaimed.
COVID-19 no excuse for dropping guard against illegal fishing
The message from the Indonesian president is very clear that the government must maintain productivity, purchasing power and food supply in the midst of the COVID-19 pandemic," said Mr. information on tropical rainforests, including pictures and deforestation statistics for countries around the world. On April 22, 2020, MMAF reported that its budget for this year had been cut by IDR 1.8 trillion (US$119 million), or more than a quarter, to provide funds to combat the country's COVID-19 outbreak.
The government should allocate special funds for fishing families whose incomes have fallen due to the outbreak of COVID-19", said Mrs.
Safer Now at Sea: developing a lower-cost system for tracking small-scale fishing vessels in the southern Philippines
Safer Now at Sea: developing a low-cost system for tracking small fishing vessels in the southern Philippines. Bibat's trips have become increasingly risky as he has to spend longer at sea because the fish around General Santos, the so-called tuna capital of the Philippines just a few miles west of Mr. Nevertheless, this new cheaper system for tracking vessels and fish catches also improves safety and communication for small-scale fishermen and their families.
Fewer fish means farther fishing
It's a big help for my family to be able to monitor my location while I'm fishing," said Mr. Bibat has not yet noticed a huge increase in the tuna populations and is traveling further out to sea than ever to pursue them. Tuasic to venture further out to sea and sometimes cross the maritime border with Indonesia.
That is why I decided to use small fishing boats and fish locally even though it does not support my family enough,” he said.
Out of reach of small-scale fishers
FAME has also reduced the subscription cost to PHP 800 per month (approximately US$185 per year). It also equipped local governments with small offices to track vessel locations and data. When they click, it automatically sends different signals to the cloud to make sure someone knows they have a problem."
Bibat now uses, the entrance to their house is still well guarded by an elaborate Catholic altar presided over by an image of the Virgin Mary.
Based in Thailand, she has covered Southeast Asia and written reports and articles for Mongabay.org. The technology not only enables fishermen to easily comply with vessel tracking regulations, but also simplifies the paper-based catch documentation systems that most small-scale fishermen still use in the Philippines. However, not sure that they could get a premium price for their fish if they used the technology, local fishermen considered the investment too risky.
To Bibat's relief, the FAME transponder on his boat is also equipped with an emergency button that he and his crew can press if they find themselves in trouble.
Guide to Contributing Articles
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CALENDAR OF EVENTS
SEAFDEC currently includes 11 member countries: Brunei Darussalam, Cambodia, Indonesia, Japan, Lao PDR, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam. Sustainable management and development of fisheries and aquaculture to contribute to food security, poverty alleviation and livelihoods of people in the Southeast Asian region. Technology transfer and capacity building to increase the capacity of member countries in the application of technologies and implementation of fisheries policies and management tools for the sustainable exploitation of fisheries resources and aquaculture.
Monitoring and evaluating the implementation of regional fisheries policies and management frameworks adopted under the ASEAN-SEAFDEC cooperative mechanism, and emerging international fisheries-related issues including their impacts on fisheries, food security and socio-economics of the region.
