What is fishing?4 answersFishing is a fundamental maritime industry involving the extraction of aquatic organisms from various ecosystems for food, trade, and employment. It has historical significance, being one of the oldest maritime activities alongside shipping. The fishing business encompasses activities like fishing, fish farming, processing, and distribution, emphasizing economic, social, and environmental considerations for sustainable profitability. Over time, fisheries have evolved from traditional practices to modern industrial operations, impacting global food security and economic development. Fishing plays a crucial role in providing animal protein, with almost 200 million people directly employed in the industry and fish contributing significantly to human protein consumption. However, challenges such as overfishing, environmental degradation, and the need for sustainable management persist in the fishing sector.
What is fisherman ?4 answersA fisherman is an individual engaged in capturing fish and other aquatic species for sustenance and economic purposes, evolving from a survival activity to a commercial enterprise over time. Fishermen play a crucial role in various fishing practices, such as inland and marine fishing, contributing significantly to food security and economic growth in countries like India. Additionally, the concept of a fisherman extends beyond mere fishing activities; it encompasses a deep connection with the surrounding environment, local knowledge, and social cohesion within fishing communities. Furthermore, innovative tools like serious games, such as the FISHERMAN game, have been developed to assess cognitive functions, including inhibition, shifting, and working memory, particularly in older adults.
What is fish meal?5 answersFish meal is a valuable protein source used in animal feeds, derived from fish unsuitable for human consumption or fish industry by-products. It is rich in essential amino acids, vitamins, and minerals, making it superior to other feed ingredients. Various methods exist for fish meal production, such as a method involving feeding, cooking, drying, and smashing processes. Additionally, a fish meal preparation device includes crushing, drying, and grinding mechanisms, ensuring high work efficiency and preparation effectiveness. An innovative method involves fermenting probiotic strains to create high-activity protein fish meal, enhancing its nutritional quality and promoting better digestion and immunity in animals. Fish meal feed for shrimps includes a blend of ingredients like earthworm powder, silkworm chrysalis meal, and traditional Chinese medicine additives, providing balanced nutrition and immunity enhancement.
What are the different factors that affect the catch of freshwater fish?5 answersFactors that affect the catch of freshwater fish include angler behavior, fish biology, human factors, climate, geography, land use, and land cover change. Angler behavior interacts with fish life history, such as growth and maturity rates, to shape the probability of fish harvest. Human factors, especially eutrophication, and climate, especially temperature, are significant drivers of overall invasion of freshwater fish species. Seasonal changes in fish behavior caused by factors like temperature, turbidity, and food availability can also affect catch per unit effort, size and age structure, growth, and condition of fish populations. Water regulation and water flow can influence catch yield of noble crayfish in rivers. Land-use and land-cover changes, particularly the loss of floodplain forests, can affect fish catch, diet, and habitat features, threatening the food and livelihood security services provided by inland fisheries.
How to differentiate the factor of freshwater fish catch?5 answersDifferentiating the factors that influence freshwater fish catch involves considering personal and situational variables, angler skill, equipment, food-web structure, and fisheries management. The importance placed on keeping fish, species preference, and the size of the fish caught are key factors in an angler's decision to keep or release a caught fish. Inequality in fish catch among anglers may be attributed to random chance rather than skill or other factors. Bait composition, including vegetable and animal proteins, as well as luring agents, can affect the attractiveness of bait to fish. The design of fishing devices, such as net hole size, can be adjusted to catch different types and sizes of fish. Catch-and-release angling for mahseer in India has shown potential for fish conservation and economic benefits.
What is marine fish?5 answersMarine fish refers to fish species that inhabit the ocean or other saltwater environments. They are an important source of animal protein, especially in developing countries with coastlines. Marine fishery is also a significant industry in many countries. The depletion of fishery resources is mainly caused by anthropogenic factors such as overfishing, habitat destruction, pollution, invasive species introduction, and climate change. Overfishing can lead to a drastic decrease in marine biodiversity, posing a threat to seafood availability in the future. To reverse this trend and restore fishery resources, fishery conservation, establishment of marine-protected areas, ecosystem-based management, and implementation of the precautionary principle are effective strategies. Public awareness of marine conservation, including eco-labeling, fishery ban or enclosure, slow fishing, and enforcement of marine protected areas, is also crucial.