Household Fish Consumption Research Articles

Determinants of household fish consumption in Enugu State, Nigeria

Determinants of household fish consumption in Enugu State, Nigeria

Pembuatan Ikan Lele (Clarias gariepinus) Asap Menggunakan Bahan Bakar Arang Kayu dan Sabut Kelapa pada Berbagai Konsentrasi

Catfish (Clarias gariepinus) is a type of fish that is widely cultivated in Indonesia. People in Lampung Province really like catfish with a consumption level of 17.10% of total household fish consumption. Catfish have a high water content so they are easily damaged. One way to preserve is smoking. The smoking process uses fuel to produce smoke and uses a drum type smoker. This research aims to determine the type of fumigation fuel that is effective for carrying out fumigation according to SNI quality. The parameters observed were water content, yield, amount of fuel used, and organoplastic tests (appearance, aroma, taste and texture). Then the data was analyzed using Microsoft Excel and continued with the BNT test. The results showed that A3 treatment with a mixture of charcoal and coconut fiber produced the best quality smoked catfish with a water content of 40.54%, with a sensory value of appearance of 8.3, smell of 8.7, taste of 8.7 and texture of 8.5. and the amount of fuel used was 6.03 kg. Keywords: Catfish, Coconut Fiber, Smoked, Wood Charcoal.

Impacts of integration of mola with prawn–carp gher farming: An approach to enhance household fish consumption and family income

AbstractThis study investigated the production performance, household fish consumption, and commercial feasibility of prawn–carp–mola mixed gher farming system. Three treatments with different species compositions were compared: prawn + rohu, prawn + mola, and prawn + rohu + mola, each having different stocking densities. The results indicated that the integration of mola improved the utilization of feed protein by prawns. However, mola inclusion did not significantly affect the growth of prawn and rohu or the production system's cost. Mola inclusion led to a significant increase in the gross production, household consumption, and sale of mola, prawn, and rohu. It also increased gross returns, income above variable cost, and net returns to land, family labor, and management. In addition, the inclusion of mola significantly increased household consumption by increasing the intake of nutrient‐rich mola and overall fish consumption. This improvement in food consumption contributed to ensuring the nutritional requirements and food security of impoverished rural farmers, especially women and children. Consequently, the integration of small fish mola in prawn–carp gher farming systems is recommended as a beneficial practice for wider adoption, effectively addressing household nutrition security at the rural level and improving the livelihoods of farmers.

Traditional Fish Farming Based on Indigenous Knowledge in Homestead Pond Can Uplift Socioeconomic Status of Coastal Rural People and Sustainability

In a time of environmental degradation and increasing demand for safe food production, traditional fish farming is gaining global attention. Utilizing indigenous agricultural methods founded on traditional knowledge contributes to sustainability by safeguarding the ecosystem and preserving biodiversity. However, it is still less studied whether traditional farming systems based on indigenous knowledge currently in place are improving the socioeconomic conditions of farmers. Hence, this study was conducted with the following objectives: (i) to reveal the present status of traditional fish farming systems, (ii) to define the socioeconomic profile of the farmers, (iii) to identify the problems associated with traditional fish farming, and (iv) to show the inter-relationship between fish farming and socioeconomic development. For achieving these objectives, data were collected from 100 small-scale fish farmers from a rural coastal area of Bangladesh through a well-structured questionnaire, focus group discussion, and cross-check interviews. Our findings showed that most of the homestead ponds were small-sized (44%) and shallow (61%) where a polyculture system was prevalent (91%). The majority of the ponds (77%) were found to be perennial, 60% of which had single ownership. Socioeconomic data revealed that the highest number of farmers (42%) earned 1000.00 to 1500.00 USD annually, and 62% of the respondents took fish farming as their secondary occupation. Among the farmers, 62% had primary education, whereas 7% had no education, and only 26% of the farmers had official training in fish farming, indicating that culture management was mainly based on indigenous knowledge. A total of 55% of the farmers had 5 to 10 family members, and 80% of them lived in joint families. Furthermore, 40% of the farmers owned tin shed houses, whereas the maximum (60%) utilized katcha toilets. However, almost half of the farmers (57%) utilized their own funds for fish farming, and the majority (90%) had access to their own tube well. The study found that the biggest obstacles to fish farming were pressure from large families, a lack of education and training, a lack of quality seed and feed, outbreaks of fish diseases, an inadequate supply of water during the dry season, and a lack of adequate funding. However, Pearson correlation showed that there was a significant positive association between age and experience (r = 0.908, p < 0.01) and age and income (r = 0.326, p < 0.01). Multiple regression analyses also demonstrated that age and experience in fish farming played a significant role in increased annual income. In conclusion, 94% of the respondents claimed that fish farming had improved their socioeconomic situation. Homestead pond fish farming through indigenous knowledge increased household fish consumption with a source of protein and micronutrients, improved dietary diversity, and generated extra household income, which inferred their better sustenance.

Tobit analysis of canned fish consumption in Erzurum province, Turkey

This study aims to determine the attitudes and behaviors of consumers towards canned fish consumption and to analyze the factors affecting the consumption of canned fish in the Erzurum province, Turkey. Data were collected from 384 households through one-on-one interviews in Erzurum province. The proportional sampling method was used for sampling. In addition, the Tobit model was used to determine the factors affecting the consumption of canned fish. In the model, the demographic characteristics of the consumers and their consumption quantities were included as explanatory. The average household size was 4.46 individuals, and canned fish consumption was 161.69 g·year-1 per capita. Canned fish accounted for 11.50% of household fish consumption. The proportion of families consuming canned fish was 25.78%. As household fish consumption increases by 1 kg per year, canned fish consumption decreases by 1.29%. Moreover, when the price of canned fish increases by USD 1, canned fish consumption increases by 1.37%. When monthly fish expenditure increases by USD 1, consumption of canned fish increases by 0.48%. The fact that the head of the household is a civil servant increases the consumption of canned fish by 5.23%, and the consumption of canned fish is 11.8% higher in families who consider canned fish nutritious. As a result, canned fish enterprises shouldinfluence consumers to consume more canned fish, especially in the summer.

Sedimentary Nutrient Dynamics in Homestead Fishpond Systems from a Subtropical Coastal Area

Homestead ponds are small seasonal ponds that are rarely utilized for fish farming. Culturing fish in these small ponds can boost household fish consumption and cash inflow. The availability of nutrients in the water and sediment, however, plays a significant role in the pond’s natural productivity. This study was conducted to assess nutrient contents and some key physical parameters in the bottom sediments of 30 homestead ponds from the central coast along the Northern Bay of Bengal. Analyses of results showed the average values (±SD) of temperature, pH, electrical conductivity, organic matter (OM), organic carbon (°C), nitrogen (N), phosphorus (P) and sulphur (S) were 17.8 ± 1.12 °C, 7.29 ± 0.11, 0.41 ± 0.09 mS/cm, 29,615.48 ± 10,528.9 mg kg−1, 11,958 ± 6107 mg kg−1, 1030.6 ± 252 mg kg−1, 17.1 ± 13.5 mg kg−1 and 32.6 ± 19.7 mg kg−1 during winter and 27.2 ± 1.81 °C, 6.73 ± 0.12, 0.38 ± 0.17 mS/cm, 19,100.01 ± 13,739.07 mg kg−1, 11,079 ± 7969 mg kg−1, 955 ± 229.4 mg kg−1, 26.6 ± 20.2 mg kg−1 and 23.4 ± 15.9 mg kg−1 during pre-monsoon, respectively. One-way ANOVA revealed no significant differences in the mean value of sediment quality parameters among the selected ponds (p > 0.05) except for phosphorus in the winter season (p < 0.05). The sediment quality variables were found to be in the suitable range for fish culture. Pearson’s correlation coefficient values (r) showed that only organic carbon and nitrogen had a strong significant correlation with organic matter (p < 0.05). Based on Cluster Analysis (CA), two major associations among the nutrients were attained at a 15% similarity level: C, OM, and N in one cluster and P and S in another. The findings showed that the parameters were within the preferable range for aquaculture, and the homestead ponds are average productive ponds.

Adult Exposures to Toxic Trace Elements as Measured in Nails along the Interoceanic Highway in the Peruvian Amazon.

Deforestation, artisanal and small-scale gold mining (ASGM), and the rapid development related to highway expansion cause opportunities for toxic trace element exposure in the Amazon region of Madre de Dios (MDD), Peru, one of the most biologically diverse places in the world. The objective of this study was to assess the exposure to arsenic, cadmium, lead, and mercury among adults in Madre de Dios. In total, 418 adult (18+ years) participants in the Investigacion de Migracion, Ambiente, y Salud (IMAS) (Migration, Environment, and Health Study) participated in this study. Consent, survey data, and biospecimens were collected between August and November 2014. Nail elements were measured by inductively coupled plasma sector field mass spectrometry. Differences by selected individual and household characteristics and local land uses were tested using one-way ANOVAs and linear mixed models. Adults in ASGM-affected areas had higher nail arsenic and nail cadmium than their non-ASGM counterparts. Higher household fish consumption was positively associated with nail mercury and nail lead. The results indicate that adult exposure to arsenic, cadmium, lead, and mercury is heterogeneous across Madre de Dios, and the exposures related to ASGM communities and fish consumption suggest that exposures from artisanal and small-scale mining are environmentally widespread. Further investigation is warranted to ascertain potential health impacts.

Consumer Preference Heterogeneity and Preference Segmentation: The Case of Ecolabeled Salmon in Danish Retail Sales

Popularity of sustainably produced food products has grown rapidly in recent years. Ecolabels are used to indicate the environmental sustainability of products and have been implemented in the seafood market, with the leading ecolabel being that of the Marine Stewardship Council (MSC) for wild fish. However, the effect of ecolabels in consumer decision making remains unclear in regard to actual purchasing behavior. This study analyzes scanner data from a household panel in Denmark, accounting for consumer heterogeneity using random parameter and latent class logit models to identify the effect of ecolabels. The results indicate substantial consumer preference heterogeneity with respect to important salmon attributes. Salmon attributes that confer convenience to household fish consumption appear to be very important in consumer choices. Ecolabeling has a significant effect on household decision making, but the majority of consumers are more likely to choose non-labeled products, which may be due to the low availability of ecolabeled products. Five consumer segments are identified, revealing one consumer segment with a preference for organic labeled salmon, comprising 15% of households. However, a consumer segment for MSC-labeled salmon is not identified. The implication is that management can rely on a segment of consumers to implement organic principles in salmon farming, but the preference for sustainable salmon fishing is inconclusive due to uncertain confounding effects.

Adult Exposures to Toxic Trace Elements in the Southern Peruvian Amazon

PDS 62: Chemicals and metals: exposure and biomarkers, Johan Friso Foyer, Floor 1, August 28, 2019, 10:30 AM - 12:00 PM Background: Arsenic, cadmium, lead, and mercury are among the World Health Organization’s top ten chemicals of public health concern. Exposure to these toxic trace elements (TTE) presents a potential health threat to populations in regions undergoing rapid environmental change. The Andean-Amazon region of Madre de Dios (MDD), Peru, is among the most biologically diverse places in the world; access to this area has been opened with the paving of the Interoceanic Highway (IOH), which bisects the region. Deforestation, artisanal and small-scale gold mining, and rapid development increase TTE exposure opportunities. Methods: As part of the population-based Investigacion de Migracion, Ambiente, y Salud (IMAS) (Migration, Environment, and Health Study), we conducted an analysis of exposure to arsenic, cadmium, lead, and mercury in nails among adults (18+ years) living along the IOH throughout MDD (n=418) in 2014. We tested for differences by selected individual and household characteristics and local land uses using one-way ANOVAs and generalized estimating equations. Results: TTE medians and ranges (ng/g) were: total mercury: 512 (18 – 5,600); total arsenic: 177 (8 – 1,260); total cadmium: 62 (1 – 3,710); total lead: 734 (112 – 572,000). Mining activities were associated with higher arsenic, cadmium, and mercury levels. Fishing was associated with higher arsenic, mercury, and lead concentrations, while household fish consumption was associated with higher concentrations of mercury and lower concentrations of cadmium. Current smoking was not associated with cadmium. High outliers for lead were observed. Conclusions: TTE exposure was heterogenous across the region and overall, was higher than what has been observed in population-based studies elsewhere. Exposures correlated to mining and fishing activities merit further investigation. While nails are easy to collect and transport, especially in remote regions of low and middle-income countries like MDD, other counterintuitive results suggest that nails may be problematic biomarkers for these elements.

Toxic metals in the muscle and liver of five main commercially-important fishes from the Persian Gulf, Southern Iran

The purpose of this study was to determine and compare the concentrations of six toxic metals (Cd, Pb, Fe, Cu, Zn, Mn) in the muscle and hepatic tissues of five commercially important fish species including narrow-barred Spanish mackerel, Scomberomorus commerson, Black pomfret, Parastromateus niger, Silver pomfret, Pampus argenteus, blackspot snapper, Lutjanus fulviflammus and Tigertooth croaker, Otolithes ruber, since they are very common in the household fish consumption. The fish samples were collected from three main landing areas along Bushehr and Hormozgan provinces during spring 2017. Our results indicated that lead concentration was higher than those of other measured heavy metals in all examined fish species, while it was an inverse situation for cadmium. We found that the concentration of the measured metals totally were higher in the liver than in muscle of all the examined fish. There was no significant intra-specific variation in metal concentration among the fish from the same species. Since it is very important to the consumer to choose between the species, we also detected the mean values of the metal concentration in the muscle of the relatively same aged species, sampled from same stations.

Fish consumption in urban Lusaka: The need for aquaculture to improve targeting of the poor

Aquaculture in Zambia is growing and likely to play an important role for food and nutrition security in the country. While outputs in capture fisheries and small-scale aquaculture are stagnating, commercial aquaculture holds promising potential to help increase the availability and accessibility of fish in the country, especially for the poor. While fish supply per capita has increased over the last decade, little is known on the food consumption patterns and the role of farmed fish in the diets of resource-poor households. The aim of this paper is to (1) generate information on the fish consumption patterns of poor households in urban Zambia and (2) explore the role of Zambian aquaculture as a source of fish among poor urban households. Multi-stage stratified cluster sampling was used to sample poor households in Lusaka. Data on fish consumption were collected through a cross-sectional study that analyzed a quantitative household survey (N = 714). Using Principal Component Analysis (PCA), the sample of poor households was further disaggregated into four socio-economic strata (asset-based) to compare household fish consumption in respect to poverty levels. The results of the study show that the poorest households almost exclusively rely on small, dried fish products from capture fisheries while the slightly better off households among the poor strata tend to consume larger, fresh fish, such as tilapia, which are partly supplied by aquaculture producers. These results imply that the poorest of the poor households – unlike the better off households – are less likely to supplement their diets with fish products from aquaculture. This could have negative consequences for the food and nutrition security of disadvantaged consumers, given the stagnation of fish supply from Zambian capture fisheries and an increasing population that demands fish. For aquaculture to contribute more effectively to fish supply among poor consumers, we conclude that the sector would need to further expand its economies of scale (to decrease unit production costs), explore producing smaller-sized fish (to increase accessibility), promote the development of small and medium-sized fish farming, and diversify production with respect to species and products that better respond to the needs of poor consumers.

Carp–mola productivity and fish consumption in small-scale homestead aquaculture in Bangladesh

Small indigenous species (SIS) of fish such as the mola carplet (Amblypharyngodon mola) are rich in nutrients, often containing high levels of zinc, iron, and vitamin A. Despite scientific and government efforts, culture of SIS for improved nutrition is not yet widespread. This paper investigates the contribution of the mola carplet, commonly referred to in Bangladesh as “mola” to household fish consumption, and the factors influencing productivity and income from carp–mola polyculture in southwest Bangladesh. In addition, we assess the effect of inclusion of mola into carp polyculture ponds on the inputs required to culture fish in homestead ponds. Carp–mola polyculture farmers (n = 344) and carp-only polyculture farmers (n = 513, as controls) were surveyed in May 2013. Mola broodstock were stocked in 4881 homestead ponds, at an average rate of 25 kg ha−1. The results indicated that pond area, water color (a proxy of phytoplankton abundance) and inorganic fertilizer (primarily urea and TSP) significantly influence mola production. Smaller ponds proved to have higher productivity than larger ponds. Production and profitability of carp–mola polyculture system are significantly higher (P < 0.1) than carp-only polyculture systems. Mola also contributed to household fish consumption, with 47 % of mola produced in homestead ponds consumed by household members. The results suggest scope for wider dissemination and impact of mola production technology. Such dissemination might involve closer collaboration among research, governmental, and non-governmental organizations, involving lead farmer selection, farmer-to-farmer visits and result demonstrations and wider communication of the positive outcomes of culturing mola.

Determination of households fish consumption structure and purchase behaviors in urban areas of Van

This study has been carried out to determine the household fish consumption structure and purchase behaviors in urban areas of Van Province. The main data of this study has been compiled through questionnaires from 260 households. In the analysis of the data, frequency tables, chi-square independence test were used and the relationships between the quantity of fish consumption of the households and some socio–demographic categorical variables have been examined through f and t tests. It has been determined that 89.2 % of the participating households consume fish while 10.8 % do not. Nearly a third (35.7 %) of the households that do not consume fish do so for the smell of the fish. 84.1 % of the households consume fish in winter. 87.2 % consume fresh fish while 40 % consume fish by frying. Mostly preferred fish are anchovy, trout and tarek respectively. It has been determined that the amounts of fish consumption per month per household and per person are 6.3 kg and 1.4 kg respectively. It has also been determined that households with children, employed head and owning the house consume more fish than those households without children, unemployed head and tenants. Keywords: Fish consumption, socio-demographic factors, consumer preferences, consumer analysis, Van

Determinants of fish consumption by household type in China

Purpose – The purpose of this paper is to separate households into several types based on their features, and then to further investigate determinants of household fish consumption in China by figuring out consumption preference divergences between types of households under the effects of economic and socio-demographics factors. Design/methodology/approach – This paper first applies Multiple Correspondence Analysis to separate the modalities of variables and households according to their features, with health knowledge and time constraint of a spouse highlighted. Then, the transcribed principal information of both variables and households has been added into Marshallian demand function with fish price, income, child effect, and health status for identification of factors on household fish demand. The robust fixed effect and robust random effect GLS regression has been conducted. Findings – The paper provides empirical insights about what and how factors affect household fish consumption. It suggests that,...

Fishing for Food? Analyzing links between fishing livelihoods and food security around Lake Victoria, Kenya.

Food-producing livelihoods have the potential to improve food security and nutrition through direct consumption or indirectly through income. To better understand these pathways, we examined if fishing households ate more fish and had higher food security than non-fishing households around Lake Victoria, Kenya. In 2010, we randomly sampled 111 households containing 583 individuals for a cross-sectional household survey in a rural fishing community. We modeled the associations between fish consumption and food security and fishing household status, as well as socio-economic variables (asset index, monthly income, household size) for all households and also for a subset of households with adult male household members (76% of households). Participating in fishing as a livelihood was not associated with household fish consumption or food security. Higher household fish consumption was associated with higher household income and food security, and was weakly associated with lower household morbidity. Household food security was associated with higher incomes and asset index scores. Our results suggest socioeconomic factors may be more important than participation in food-producing livelihoods for predicting household consumption of high quality foods.

Marine fish food in the United States and methylmercury risk

This paper takes a market-oriented approach to study potential exposure of methylmercury (MeHg) risk to human health from US domestic commercial ocean fish landings (consumption). Information is assembled on MeHg concentration levels of marine species. Landings were examined for 1995–2005. Confined to this seafood source, trends of landings indicating high concentration species (above 0.7 ppm, tilefish, shark, king mackerel and swordfish) were significantly decreased. People bought stable amount of medium MeHg level species (0.3–0.7 ppm, grouper, Spanish mackerel) but less amount of low concentration level species (below 0.3 ppm, catfish, tuna and southern flounder). Based on estimated prices of species and quantities taken it is found that consumers, one crucial link of the entire MeHg risk assessment process, had exhibited awareness of potential MeHg risk in fish and demonstrated in household fish consumption. Information assembled in this paper is insufficient to draw further inference on specific population cohorts more susceptible to potential exposure of MeHg risk. This inquiry may be extended to imported fish in the US for comparison.

Small Indigenous Fish Species in Bangladesh: Contribution to Vitamin A, Calcium and Iron Intakes

Fish play an important role in the Bangladeshi diet, constituting the main and often irreplaceable animal source food in poor rural households. Fish consumption is dominated by wild small (length <25 cm) indigenous fish species (SIS). The vitamin A content in SIS varies, from <100 microg of retinol equivalents (RE)/100 g raw edible parts, to >2,500 microg RE/100 g raw edible parts in mola (Amblypharyngodon mola). The study addressed the dietary contribution of fish to vitamin A, calcium and iron intakes and the potential of integrating SIS, including mola, into existing carp polyculture ponds. Fish consumption (wild and cultured fish) was surveyed by 5-d recall interviews in 84 poor rural households in Kishoreganj district in 1997-1998. Fifty-nine of the households cultured carp and SIS in small (mean size 400 m2) domestic ponds. Total household fish consumption was unaffected by the domestic aquaculture production. SIS from wild sources contributed 84% of the total fish consumption. In the peak season (October), SIS contributed 40% (median 23%) of the recommended vitamin A intake at the household level (n = 84). Thirty-four households cultured mola along with carp. Cultured mola used for household consumption contributed 20% (median 18%) of the recommended intake of vitamin A at the household level. Wild SIS is an important source of vitamin A and calcium in Bangladesh. Mola can be integrated in existing carp culture without negative effects and can contribute to increased vitamin A intake in rural households.