Demand For Fish Research Articles

How far can Tunas and Sardinellas derived from artisanal fishing be exported for retail trade from Côte D’Ivoire, West Africa?

In West Africa, marine artisanal fisheries´ usefulness lies in their capability to support people´s increasing demand for fish, as fish-consumption is generally viewed as the first and foremost way to provide a large amount of animal proteins to consumers. Here, information about the marine artisanal fishery located at Sassandra, southwestern Côte d’Ivoire, are provided, talking about the processing, marketing and distribution of two small pelagic species that are targeted by that fishery. The study was carried out as field work activities in February-March and August-September 2021, using a questionnaire to which people working for the benefit of the fishery willingly submitted themselves. The results shed light on marketing and the route to be followed by the fishery products when these are to leave Sassandra for retail trade. Women participation in post-harvesting tasks is also singled out as a way to acknowledge the significant role they play in artisanal fisheries. The study calls on decision Makers to equip attention to equip women with modern ovens as a way to tackle problems facing women in their efforts to process the fish.

Implications of COVID-19 on oxbow lake (Baors) Fisher's community, Bangladesh: resilience to food security against probable natural calamities

The purpose of studying the consequence of COVID-19 on oxbow lake (Baor) fisher's community is to counteract the negative impacts on livelihoods with food security and figure out diversified resilience options for sustaining basic needs of life. Individual questionnaire interviews, oral history, focus group discussion, and telephonic interviews were among the methodological techniques used to gather primary data. The Baor fisher's community was impaired with income, food and feeding habit, health and marketing. The Baor fishers had to stop harvesting or reducing the amount of fish harvest because of gradual decreasing of consumer demand and prices of fish during the course of COVID-19 pandemic period. The transportation costs were raised up to 50%–80%, while the prices of fish decreased by 15%–30% prior to the onset of COVID-19 pandemic. The frequency of fish consumption was significantly come down to 37.5%. Many households substituted fish to farm reared hens, eggs, domestic hens and ducks, lentils, and vegetables during the period of lockdown across the country. Supply chains of fish and fish culture inputswere disrupted due to inadequacy of transportation facilities. Many school- and college-going students were dropped outduring the ongoing pandemic situation due to their financial problems (10%) and early marriage (7.5%). The secondary sources of income (labor of netting in other aquaculture farms) of Baor fisher's community were also impaired. The resilience options of this study will be helpful to minimize the sudden economic crises, ensure dynamic fish value chains and food security, protect individuals from ongoing health hazards, and promote sustainable food production systems followed by social cohesion and stabilityagainst the prevailing challenges owing to the pandemic and other natural calamities.

Experimental evidence of the impact of framing of actors and victims in conservation narratives.

Media narratives play a crucial role in framing marine conservation dilemmas by depicting human actors, such as fish consumers or the fishing industry, as responsible for negative effects of their actions on species and ecosystems. However, there is little evidence documenting how such narratives affect preferences for reducing bycatch. Behavioral science research shows that people can act less prosocially when more actors are responsible for a collective outcome (responsibility diffusion effect) and when more victims need to be helped (compassion fade effect); thus, the media's framing of actors and victims may have a significant effect on preferences. We conducted the first test of responsibility diffusion and compassion fade in a marine context in an online experiment (1548 participants in the United Kingdom). In 9 media narratives, we varied the type of actors responsible for fisheries bycatch (e.g., consumers and industry) and victims (e.g., a single species, multiple species, and ecosystems) in media narratives and determined the effects of the narratives on participants' support for bycatch policies and intentions to alter fish consumption. When responsibility for negative effects was attributed to consumers and industry, the probability of participants reporting support for fisheries policies (e.g., bycatch enforcement or consumer taxes) was ∼30% higher (odds ratio=1.32) than when only consumers were attributed responsibility. These effects were primarily driven by female participants. Narratives had no effect on personal intentions to consume fish. Varying the type of victim had no effect on policy support and intentions. Our results suggest that neither responsibility diffusion nor compassion fade automatically follows from increasing the types of actors and victims in media narratives and that effects can depend on the type of outcome and population subgroup.

Prospects of fish supply-demand and its implications for food and nutrition security in Egypt

Aquaculture plays an increasingly important role in meeting the rising global demand for fish fuelled by economic and demographic growth. However, in many middle-income countries, aquaculture is constrained by rising labour costs, limited input supply, environmental concerns, and infectious diseases. In this paper, we developed a multi-species, multi-sector equilibrium model and applied it to the fishery sector of Egypt, a leading aquaculture producer in Africa, to examine these barriers. Projection results show that rising wage rates would slow down the growth of labour-intensive aquaculture compared to those that use relatively less labour. The demand for feed, seed inputs and water use for aquaculture would substantially increase. The results also show that disease outbreaks would possibly affect production sectors via output reduction and also consumers via increases in fish price. Our findings suggest that stabilising the prices of feed and seed, investments in disease control and input-use efficiency improvement technologies, including water use, are important while the overall effectiveness of tax instruments is modest. Though calibrated to Egypt, our approach can be applied to other middle-size national aquaculture industries.

Feasibility for cage farming in Africa: The case of the Kenyan part of Lake Victoria

AbstractFish catches in Lake Victoria have been on the decline, while demand for fish has been increasing because of rapid human population growth and awareness of the health benefits of fish. This decline is attributed to socioeconomic activities around the lake and climate change effects. To bridge the gap, cage culture has presented itself as a new socioeconomic frontier with good prospects for income in Lake Victoria, besides conserving declining wild fish stocks. However, these cages are greatly influencing the biodiversity of the lake both negative and positive. The study adopted a descriptive survey research where a total of 200 cage fish farmers were targeted. A sample of 60 fish farmers was selected using purposive and simple random sampling methods. Interview schedules and self-administered questionnaires were the main tools for data collection. Both primary and secondary data were collected and analyzed using Statistical Package for Social Sciences. The results were: the majority of cage fish farmers were male (87%) while the female was 13%, with a majority (75%) of the secondary and tertiary level of education. The beach management units and fish farmers were responsible for siting of cages. The fish farmers experienced several challenges including high cost of feeds leading to the use of poor quality feeds that sink and increase eutrophication, which enhances the growth of algae and water hyacinth in the lake. Overstocking leads to the emergence of diseases and fish kills, and fish theft resulting in economic loss. Most (80%) of respondents were not aware of policy guidelines on cage culture in Lake Victoria, while (75%) were not aware if cage culture was promoting climate change effects in Lake Victoria. This paper recommends the government to create awareness of policy guidelines on cage fish farming.

Cage farming in the environmental mix of Lake Victoria: An analysis of its status, potential environmental and ecological effects, and a call for sustainability

AbstractLake Victoria is the second largest freshwater lake in the world that was once a biodiversity hotspot hosting over 500 endemic haplochromine cichlids that were later decimated by exotic introductions and anthropogenically driven environmental and ecological changes. The environmental and ecological changes in the lake over the years have been attributed to overfishing, eutrophication, introduction of exotic species, pollution and possibly climate change. The lake's capture fishery, which is the main economic activity directly and indirectly supporting over 40 million people, has continued to decline after experiencing a boom between the 1970s and 1990s following the introduction of Nile Perch (Lates niloticus) and Nile Tilapia (Oreochromis niloticus). In order to augment capture fisheries from the lake, cage culture was introduced in 2005, but its sustainability and influence on the ecology of the lake are not well understood. In this review, we examine the genesis of degradation of Lake Victoria and assess the role of cage culture as both a solution to the current situation and a cause for concern for the ecology of the lake. To compile this review, we utilized data in the grey and published literature. Studies show that the degradation of the lake can be traced back to the 1930s when the trophic status and ecology of the lake started showing signs of anthropogenic influence. The Nile Perch was introduced in early 1960s to replenish the fishery but its ecological impacts were felt in 1970s and 1980s when the native haplochromine species started to disappear from catches. Progressively, the ecological changes and management concerns in the lake have become a complex mix of exotic species introductions, eutrophication, and overfishing. In this mix of persistent ecological changes, the once thriving capture fisheries revolving around the two exotic species (L. niloticus and O. niloticus) have significantly declined threatening the livelihoods of millions of people directly and indirectly involved in the fisheries. These declines necessitated the introduction of cage culture in 2005 to fill the increasing demand for fish from the lake. Ever since, cage numbers have increased tremendously (>6 000 by 2020) and is now operated by over 60 different firms which are owned either individually or by groups. Over 70% of the cages have been installed in shallow areas within the Winam Gulf which goes against the guidelines on cage installation and operation; regulations on cage farming were introduced after the activity had gained momentum in the lake. Limnological data in areas of the lake that have been stocked with cages has shown evidence of negative effects on water quality. This decline in water quality can be attributed to remnant feeds used in cages, of which 50% are the sinking types, and wastes from fish excretion and egestion. Although data are limited, the potential influence of cage farming on the already altered ecology and environment of Lake Victoria needs to be recognized and investigated. This study recommends studies targeting operations of cages in the lake, including a comprehensive environmental audit to inform their sustainability and relevant policy.

MINAPOLITAN AREA DEVELOPMENT STRATEGY IN OGAN KOMERING ULU REGENCY

This study aims to identify the internal and external factors involved in the development of the minapolitan area, as well as to analyze the development strategy of the minapolitan area in Ogan Komering Ulu Regency. This research was conducted using the SWOT analysis method (Strengths, Weaknesses, Opportunities, Threats). The results of this study indicate that the internal factors in this study are the availability of abundant water, the existence of the Raksa Jiwa fish seed center (BBI), the availability of labor, and the availability of own land. While the internal factors that become weaknesses are not being able to make their own feed, low community motivation, lack of capital support, low skills of fish farmers, lack of socialization from the government. External factors that become opportunities are government regulations regarding the determination of the minapolitan area of ​​OKU Regency and the potential for higher demand for fish. Meanwhile, external factors that pose a threat are the high price of feed, and the presence of competitors from other regions. The results of the SWOT analysis show that alternative strategies that can be implemented include maximizing the potential of the available resources, optimizing the role of the Raksa Jiwa Fish Seed Center (BBI), optimizing the planning for the use of natural resources by compiling a master plan for the minapolitan area.

Simulating cyanide fishing: photosynthetic effects of short-term cyanide exposure in three different hermatypic coral species

ABSTRACT Since the 1960s the demand for ornamental aquarium fish has grown steadily and consequently cyanide fishing is still a popular fishing method despite its prohibition. This poses a severe threat to coral reefs in Southeast Asia. This study aimed to investigate the short-term stress reaction on photosynthetic yield in the tissues of three different hard coral colonies (branching growth forms Pocillopora damicornis and Seriatopora hystrix, and massive Porites lobata) to initially high and then decreasing cyanide exposure, mimicking cyanide fishing by fishermen. Experiments were performed both in situ in the coral reefs of the Marine Protected Area Pulau Pieh, West Sumatra, Indonesia, and in the aquaria facilities of ZMT in Germany. A Diving-PAM fluorometer was used for in vivo stress assessment of the holobiont. While in all species the photosynthetic efficiency was significantly reduced right after cyanide application, the massive species displayed much lower ΔF/Fm’ values. After three days in cyanide-free water all three coral species recovered to initial values of Fv/Fm, except for P. lobata. No bleaching or discolouration was detected by the conclusion of the experiment after 38 days. Especially Indonesian reefs with massive corals may be therefore more severely impacted by cyanide fishing since the retention time of the water in these reefs is longer than in reefs that consist primarily of branching corals. This might have implications for the management of different reef parts of the MPA.

Effects of frying on fish, fish products and frying oil – a review

Fish and fish products contain important source of nutrient that provides benefits upon consumption. The increasing demand and high utilization of fish have caused a market shift in the fishery industry. Although fish is nutritious, some consumers do not prefer to consume fish in its original form because of its fishy taste, fishy odour and it is highly perishable. To further promote the consumption of fish, the production of fish products and frying are applied to suit consumers’ preferences. Frying is commonly used in various food premises as it changes the characteristics of the fish and fish products, especially the taste and texture. However, the increase in awareness has changed the perception of the consumer as they prefer healthier food in their lifestyle. Despite the increase in awareness, some consumers still prefer fried foods and food products due to their unique sensory properties and texture. To understand the effects of frying on foods, several parameters during frying are studied. Frying temperature, frying cycle, frying time, frying techniques and frying oils used are parameters that could affect the physicochemical and sensory attributes of the fish and fish products. Repetitive frying could cause the formation of toxins and alter the fatty acid content in the fish, fish products and frying oils. This changes the taste and alters the composition of the foods. Meanwhile, different frying times, oil and techniques cause significant changes to the chemical composition, sensory attributes, lipid oxidation, fat content, oil absorption and fatty acid profiles of the fish and fish product. This review aimed to gather information specifically on the changes in fish and fish products upon frying at different frying cycles, time, temperature, oils, and techniques.

A Disaggregated Analysis of Fish Demand in Myanmar

We estimate demand elasticities for fish in Myanmar by fish supply sources and household groups, using a multistage budgeting approach combined with quadratic almost ideal demand system (QUAIDS). Our findings show that fish demand from all supply sources and household groups has increased with income. A substantial share of increasing demand for all fish groups is likely to come from poor and rural households because the income elasticity of demand for all fish groups is higher for poor (0.40) and rural households (0.32) than for nonpoor (0.26) and urban households (0.29). Farmed-fish consumption is the most income-responsive in all household groups. Demand for fish tends to be less price elastic for poor households because fish is their cheapest animal protein source, and substitutes are limited. Effective management policies and new technologies are essential to sustain fish supply from capture fisheries and aquaculture to meet the increasing fish demand in Myanmar.

Availability of Marine Fishes in Cox’s Bazar, Bangladesh: A Case Study on the BFDC Landing Center

Abstract Fish availability in the coastal landing center highlights the assumption of stocks in the marine fishing zone of the ocean. This study, therefore, aimed to analyze the availability of marine fishes in the Bangladesh Fisheries Development Corporation (BFDC) landing center, Cox’s Bazar, Bangladesh between January 2021 and May 2021. A total of 54 species were recorded, of which 42 were marine fishes, 7 were shellfishes and 5 were large fishes. The dominant orders were Perciformes (56%), Scombriformes (17%) and Clupeiformes (10%). More than 56% of the total marine fishes were classified as Least Concern, nearly 10% were categorized as Near Threatened and 2% were marked Vulnerable. The dominant orders of shellfish were Portunidae (43%), followed by Penaidae (29%), Loligonidae (14%) and Octopopidae (14%). Shrimp Penaeous monodon had the highest consumer demand, whereas consumer demand for non-conventional shellfish was comparatively low. Most of the shellfish were categorized as Least Concern. Among large fishes, the wider availability of sharks (five species) and rays (two species) was observed in the winter and monsoon season, although the consumer demand for those large fishes was low. The Vulnerable sharks and rays were Sphyma zygaena and Mobula birostris. This study elucidates the present scenario of marine fishes in the BFDC fish landing center, Cox’s Bazar, Bangladesh.

Empirical study of capture and aquaculture fish production in Nigeria

This work studied the development of fish production in Nigeria looking at the contributions of capture and aquaculture fish production in Nigeria to the total Domestic annual fish production; the trend and balance in annual fish demand and domestic production in Nigeria. The growth accounting framework and time series data from 2006 to 2019 to project the viability of Nigeria domestic fishery sector. The study shows that the capture fishery maintained the highest contributor to the domestic fish production in Nigeria for the study period. It contributed over 75.00% of the total domestic fish production while Aquaculture subsector gained the highest growth rate among the subsectors. Its annual growth rate stood at 12.53% while the capture sector was seen to be declining in its contribution to the domestic fish production in Nigeria.

Forecasting system of sales and amount of freshwater fish supply using the trend moment method

UPTD Ngrajek as a provider of freshwater fish in Muntilan, Kab. Magelang serves an average of 150,000 fish per month from tilapia, carp, tawes, catfish, catfish and carp. So, we need a system that can predict the amount of supply and demand for freshwater fish to minimize stock shortages. The Trend Moment method is used because of the advantages of using historical data that is not even or odd. The results of the application of the Trend Moment method in the forecasting system with data from December 2018 - May 2021, it is known that the error value using the MAPE test is 19.11%. This value indicates that the forecasting results on the system are good. In testing the system using alpha testing (blackbox method) and beta testing (questionnaire). 20 respondents stated that the system is easy to operate (81%), easy to transact (98%). complete information (84%), complete features (73%), forecasting information (89%), user friendly (56%), and effective (80%).

Towards Sustainable Aquaculture: A Brief Look into Management Issues

Aquaculture’s role has expanded over the past two decades, with the industry contributing to nearly 50% of the overall fish production. Aquaculture production in Asia and Africa contributes a significant share of total global aquaculture output growth. Aquaculture supports livelihoods and income improvement in a number of states, despite the fact that economic situations have indeed been unfavourable and environmental concerns remain undeniable. To meet the growing demand for fish, aquaculture must expand. However, this expansion will not be sustainable unless management and planning are significantly improved. Local, national, and international management are needed to address the social, economic, and environmental problems. These provide the foundation to proper aquaculture management strategies. In considering the involved ecology, water quality, and genetics, aquaculture can have a detrimental impact on the environmental sustainability. This paper highlights the review on site selection with capacity evaluation, analysis of threats and risks, as well as certification and standards, which are all important considerations in achieving a sustainable aquaculture industry.

Insight Into the Relation Between Nutritional Benefits of Aquaculture Products and its Consumption Hazards: A Global Viewpoint

Aquaculture plays a huge role in supporting the needs and demands of fish and other aquatic organisms globally. Being a vital contributor in the fisheries sector, aquatic sources derived from the aquaculture industry are well-known for their high nutritive values that are compromised with high-quality protein, essential omega-3 fatty acids, vitamins, and minerals. Aquaculture has also widened fish availability to regions and countries with limited access to farmed species, leading to improved nutrition and food security. However, the presence of dangerous contaminants, notably heavy metals, endocrine disrupting compounds, polycyclic aromatic hydrocarbons, microplastics, as well as antimicrobial drug residues, has been detected in the aquaculture products. In conjunction, the risk–benefit assessment (RBA) approach has been proposed to be used as a meaningful tool for evaluating the health impacts of the consumption of aquatic sources on the targeted population. This narrative review outlines a compilation of aquaculture products as a nutritional source for human consumption. The aquaculture industry is well-appreciated, especially in low-income countries, for achieving sustainable food security. The organoleptics and preferences of aquaculture products as means of dietary variations were demonstrated. The damaging contaminants contained in the commercially available aquaculture products were quantitatively outlined. Furthermore, the adaptation of the risk–benefit approach underlying its potent impacts on public health concerns, with its current challenges and limitations, is elucidated.

Profiling of Croatian Consumers Based on Their Intention to Consume Farmed Fish.

Today’s increased demand and consumption of fish would be impossible to ensure without aquaculture. Farmed fish, however, is often considered inferior among consumers in comparison to its wild counterparts. The aim of this study was to profile Croatian fishery consumers based on their intention to consume farmed fish. The participants in this study were a nationally representative sample of people responsible for food purchasing within the household (n = 977), whose responses were collected by the CAWI (computer-aided web interviewing) method. Four clusters were identified and described: farmed fish enthusiasts (21.1%), farmed fish supporters (17.4%), indifferents (44.7%), and farmed fish sceptics (16.8%). Results showed that consumer segments differed significantly with respect to age, income, employment status, living region, and physical activity. Furthermore, intention to consume farmed fish is related to fish consumption in general (those with higher intention are more frequent fish consumers). Interestingly, prejudices against farmed fish are present in all clusters; however, these prejudices are more pronounced among those with the weakest intention to consume farmed fish. Differences between clusters were observed also in respect to product information and preferences, knowledge about fish, places of usual purchase, and source of information about fishery products. The obtained results could be used in designing marketing strategies to promote farmed fish consumption.

Comparative Evaluations to Enhance Chemical and Microbial Quality of Salted Grey Mullet Fish

Salted fish preparations are popular and widely eaten across the world. Salting is a preservation strategy to enhance shelf life by decreasing water activity in fish muscles. Salted fish demand increases with less regard for preservation characteristics, and novel strategies are required for healthy production. Lysozyme, EDTA, their mixture, and black cumin oil nanoemulsion (BCN) were used for dipping treatments to make preservative films before salting. A medium-sized mullet were classified into six groups: fresh, commercial salted mullet, and four treatments. Stored salted mullet groups were evaluated for chemical composition changes, lipid profile changes, nitrogen profile changes, and microbial contamination. The results were reflected by nonsignificant changes in protein content (21.08 ± 1.05%) of the BCN compared to the fresh (22.41 ± 1.41%), with the lowest salt penetration to the flesh (11.11 ± 0.74%). The lowest value recorded was the BCN for the pH (5.53 ± 0.06) and water activity (0.447 ± 0.019). The changes in lipid profile compared to the fresh were very low, which does not happen in a commercial salted sample. The changes in total volatile and non-protein nitrogen represented very low for the BCN compared to the commercial salted one. Coliform, E. coli, Staphylococcus aureus, Salmonella, and Clostridium were not detected in the BCN salted mullet. The overall acceptability for the BCN mullet was the best in the test panel list evaluation, followed by the mixture treatment. This research indicated that the BCN treatment before mullet fish salting was optimal, with greater food safety properties and no consumer acceptance alterations.

Assessing the Economic Impacts of COVID-19 on the Aquaculture and Fisheries Sectors in Relation to Food Security: A Critical Review

The aquaculture and fisheries sectors are critical sources of nutrition and employment generation in many developed and developing countries. Hence, any disruptions to these sectors due to the COVID-19 pandemic have a far-reaching impact, leading to a cascading chain of disorder affecting people’s food security and livelihoods. Relating to these fish sectors, we reviewed COVID-19’s implications for the food security of these vulnerable countries. The current study indicated that COVID-19 and its related preventive measures have severely disrupted the fish demand and supply chain by creating considerable fish price volatility. As a result, the vulnerable aquatic communities have adopted several short-term coping strategies, including fish overwintering, delayed fish stocking time, and feeding the overcrowded fish with low-priced food. Since the long-term coping strategies are still unclear, we recommended certain longstanding methods that are likely to safeguard food security and livelihoods if adopted.

Pemanfaatan Jeroan Ikan Dengan Limbah Kulit Jagung Sebagai Pakan Alternatif Ikan Lele

The demand for freshwater consumption fish, especially catfish, is so fast that the aquaculture sector needs to be increased again. The supporting factor in the success of aquaculture is feed, where feed for catfish cultivation on Timor Island, NTT is still much more expensive than on the island of Java, this is an inhibiting factor for the success of cultivation on Timor Island. These problems can be overcome by making independent feed. The purpose of this activity is to determine the potential of local raw materials or waste in Timor Island as raw materials for making fish feed. The method used is a descriptive method where research describes the phenomenon or individual characteristics, the situation accurately in a certain group. Based on the results obtained that the waste on the island of Timor, namely fish offal and corn husks can be used as raw materials for making feed and has a fairly good buoyancy shown by being able to float for more than 5 minutes.

Expanding narratives of governance constraints to improve coral reef conservation.

To understand and address the failures of reef governance, it is critical to understand the perceptions of diverse policy makers and practitioners about the challenges they face in achieving their goals. Examining the discourse of policy makers and practitioners can reveal the extent to which these perceptions capture the full spectrum of potential governance challenges, including those related to management, institutional structures and processes, the values and principles underpinning governance, and the social and environmental context. We conducted semistructured interviews with 110 policy makers and practitioners across multiple sectors, scales, and contexts in Barbados, St Kitts and Nevis, Belize, and Honduras. We used thematic qualitative analysis informed by theories of interactive governance and governability to examine the challenges perceived by governance actors. Perceived governance challenges were broadly consistent across countries, but differed by sector (V = 0.819, F6,60 = 1.502, p = 0.01) and by level (community compared with national) (V = 0.194, F1,10 = 2.178, = 0.026). Management inputs and outputs, challenges relating to the socioeconomic context, issues of leadership and power, and stakeholder engagement were commonly cited challenges (>75%). Few respondents discussed challenges relating to the ecological context, governance processes, or the values and principles underpinning governance. We argue that examining perceptions can inform efforts to improve governance and assess the appropriateness of particular management tools under context-specific governance constraints. Furthermore, expanding the narratives of governance challenges to encompass the subtle values and images underpinning governance, and the scale of the challenges faced, can help identify a wider set of opportunities for change.