Sustainable fisheries
Why is fish nutritionally essential?
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- Contain Iron
- Definition of fishing and use of terms in fisheries
| Why is fish nutritionally essential?
Fish contain long-chain omega-3 fats. Seafood and fish contain these fatty acids essential for human bodies and brain development. Iodine Content: Fish or seafood contain natural iodine nutrients. Iodine helps with thyroid function and is also essential for neurodevelopment. Contain Vitamin D: Vitamin D is helpful in mental development, regulates immune system function, and is essential for bone health. Contain Iron: Pregnant women take iron for additional blood for themselves and their babies. Contain Ca, Zn, and other minerals: seafood consumption helps children’s development. Factors Affecting Fish Population Imbalance by Gebremedhin, 2021 Fish populations are affected by three factors: Mortality rates: Mortality measures the number of fish removed/eliminated from the population. Growth: Growth refers to the span and gaining weight of the population in each specific period. Recruitment: Recruitment is the number of fish born in a specific period. Fish populations rise through recruitment and growth, but mortality from fishing or natural causes diminishes both numbers and biomass. “Illegal, unreported, and unregulated (IUU) fishing increases mortality and negatively impacts fish populations in abundance and size.” Fishers commonly target spawning biomass, resulting in high mortality rates and fewer recruits and mega spawners. Small mesh sizes used for illicit fishing might negatively affect fish size distribution and development. Definition of fishing and use of terms in fisheries Fishing is catching, removing, and capturing aquatic organisms or fish in the marine environment. This activity extends back millennia and has always been a major source of food and raw materials. (Calado et al., 2010). Traditional fishing was mostly small-scale and centre on sustenance fishing. Fishes were caught for food, with a small quantity sold to make revenue. On the other hand, modern fishers frequently want to maximize their catches, which can severely impact fish supplies and the ecology. This technique increases the number of overexploited and depleted fish stocks, jeopardizing the long-term viability of ocean resources. As a result, it is vital to distinguish between diverse types of fishing activities and the potential repercussions. Fishing a species faster than its natural production rate, which results in a population decline and depletion, is known as overfishing. When fish stocks are not at their maximum sustainable yield, fishing pressure is reduced, which causes fish populations to grow beyond healthy limits. This is known as underfishing. The term "sustainable fishing" describes methods of fishing that protect and enhance the productivity and health of the targeted fish species, reduce adverse effects on the marine environment, and guarantee the long-term survival of fisheries. Maintaining fish populations and marine ecosystems entails fishing within the bounds set by science, refraining from overfishing, minimizing bycatch, safeguarding habitats, and advocating for ecosystem-based management. Download 114.03 Kb. Share with your friends:
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