total fish
Recently Published Documents


TOTAL DOCUMENTS

213
(FIVE YEARS 75)

H-INDEX

24
(FIVE YEARS 2)

2022 ◽  
Author(s):  
Nhuong Tran ◽  
U-Primo Rodriguez ◽  
Chin Yee Chan ◽  
Yee Mon Aung ◽  
Long Chu ◽  
...  

Bangladesh has made significant progress in social and economic development in recent years, but micronutrient deficiencies and poor dietary diversity remain a significant challenge. This paper developed eight scenarios to explore fish supply-demand futures in Bangladesh using the AsiaFish model, with special emphasis on the role of fish in micronutrient supply to address the nation’s malnutrition and nutrition security challenges. A business-as-usual (BAU) scenario followed historical trends for exogenous variables used in the model. The seven alternative scenarios explored were: the implications of increase productivity of farmed tilapia, pangasius and rohu carp (AS1); productivity changes in hilsa production (AS2); improvements in the quality of feeds (AS3); reduction in the price of plant-based feeds (AS4); disease outbreak in farmed shrimps and prawns (AS5); and climate change impact (AS6) and stagnant capture fisheries (AS7). The BAU scenario indicates that aquaculture growth will be a prominent contribution to increasing total fish supply and demand and fish exports to 2040. Apart from the scenarios that are favourable to aquaculture sector development, other alternative scenarios highlighted the lower growth rate of capture fisheries and aquaculture compared to BAU, resulting in declining in per capita fish consumption, fish exports and nutrient supply from fish as a consequence. Increased availability of aquaculture fish can slightly compensate for the lower growth of capture fisheries in term of their nutrition quality and dietary diversity, particularly for poor consumers. Policies towards sustaining fisheries and a nutrition-sensitive approach to aquaculture is recommended as both capture fisheries and aquaculture are essential for sustaining healthy and nutritious diets in Bangladesh.


2021 ◽  
Vol 11 (2) ◽  
pp. 30-37
Author(s):  
Khairul Adha ◽  
Melissa Dennis Chong ◽  
Ahmad Syafiq Ahmad Nasir ◽  
Fatimah A'tirah Mohamad ◽  
Farah Akmal Idrus ◽  
...  

The study was conducted in the river system located at Wilmar oil palm plantation in Miri, Sarawak. The objective of the study is to determine the fish species diversity and composition in the streams and rivers in the oil palm plantations. Fish were sampled using a variety of fishing methods, including, scoop nets, cast net, and gill nets of different mesh sizes (1.0, 1.5, 2.0, 2.5, 3.75 and 4.0 cm) from 2 to 7 of February 2014. A total of 326 individual fish including 32 species of native fishes and one species of non-native fish from 19 genera, seven families and five orders were collected from seven locations. The cyprinid fish represented 62.20% of the total fish caught and was found in all the rivers surveyed. About six endemic species in Borneo such as Barbonymus collingwoodii, Barbodes banksi, Barbodes sealei, Hampala bimaculata Nematabramis borneensis and Nematabramis everetti were identified. However, only one species from families Bagridae, Balitoridae, Clariidae, and Hemiramphidae was sampled from the study sites. The higher fish species composition found in streams and rivers of the oil palm plantation landscapes could be attributed to the conservation of some areas of the plantation as high conservation value forest (HCVF) status, which have provided suitable habitat for fish species within the plantation aquatic environments.


Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4500
Author(s):  
Hikaru Takeuchi ◽  
Ryuta Kawashima

Whether dietary and nutrition and dietary patterns are associated with the development of dementia is an interesting research question. Participants of a longitudinal cohort study that included European adults who were middle to old aged at baseline and who had not been diagnosed with dementia at baseline (2006–2010) and had not been diagnosed with dementia or died within 5 years after baseline were followed up (until 2018) and analyzed. Associations between intake frequency of each food class measured by the food-frequency questionnaire at baseline and incident dementia 5 years after baseline were analyzed after correcting for confounding variables. A total of approximately 340,000 participants and 900 cases were included in the analysis for each food class. Cox proportional hazard models with self-reported intake level of each food category divided into four mostly equally divided categorical variables revealed a high intake of bread, moderate total meat and total fish intake and low vegetable and fruit intake were thus associated with a small but significant decrease in the onset risk of dementia, while poultry and cereal were not. These findings are mostly inconsistent with the idea that Mediterranean diet is associated with lower risk of subsequent incident dementia.


PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261119
Author(s):  
Jason Flower ◽  
Andy Estep ◽  
Keinan James ◽  
Robin Ramdeen ◽  
Claire A. Runge ◽  
...  

Coral reef fisheries are vital to the livelihoods of millions of people worldwide but are challenging to manage due to the high diversity of fish species that are harvested and the multiple types of fishing gear that are used. Fish traps are a commonly used gear in reef fisheries in the Caribbean and other regions, but they have poor selectivity and frequently capture juvenile fish, impacting the sustainability of the fishery. One option for managing trap fisheries is the addition of escape gaps, which allow small fish to escape. We compared catches of traps with and without two 2.5 cm (1 inch) escape gaps on the Caribbean island of Montserrat. No significant differences were found in the mean fish length, total fish biomass, number of fish, fish species richness, and Shannon diversity index between hauls of the two trap designs, though traps with escape gaps did catch larger proportions of wider-bodied fish and smaller proportions of narrow-bodied fish. Furthermore, traps with gaps caught a smaller proportion of small-sized fish and fewer immature fish (though differences were not statistically significant). Linear mixed effect models predict that soak time (the length of time between trap hauls) increases the mean catch length, total catch biomass and total number of species in the catch. The relatively modest evidence for the effect of the gaps on catch may be explained by the long soak times used, which could have allowed most smaller-sized fish to escape or be consumed by larger individuals before hauling in both traps with and without escape gaps. Despite the small differences detected in this study, escape gaps may still offer one of the best options for improving sustainability of catches from fish traps, but larger escape gaps should be tested with varying soak times to determine optimum escape gap size.


2021 ◽  
Vol 10 (1) ◽  
pp. 21-26
Author(s):  
Dhanya Sai Das ◽  
R Govindasamy

Aquaculture and fisheries emerged as an important source of food, protein, nutrition, livelihood and employment for the majority of the rural population. The fisheries sector has registered a sustainable and astounding growth rate over the last decade. The sector offers an attractive and promising future for employment, livelihood and food security. The study is based on the available secondary data from different aspects of fishery statistics published in Handbook on Fisheries Statistics 2020 by the Government of India and other related articles. Data for the time series analysis was taken from 2001-02 to 2017-18. It is found that the world per capita apparent consumption of fish has been increased by 10.4 kg from the 1960s (i.e., 9.9 kg) to 2016 (i.e., 20.30 kg). By analysing the time-series data, it is evident that the total fish production, including both marines and inland, has shown an astounding growth with a Compound Growth Rate of 4.58. The regression equation was Y = 5.182X – 12267, R2 value was 0.9414 where Y is the total fish production (dependent variable) and X is the total fish seed production (independent variable). There exists a positive relationship between fish seed and fish production in the country. It can be concluded that aquaculture plays a significant role in the country’s GDP rate and food security.


2021 ◽  
Vol 919 (1) ◽  
pp. 012003
Author(s):  
Rapita ◽  
Susiana ◽  
D Kurniawan ◽  
F Lestari ◽  
D Sabriaty ◽  
...  

Abstract Sei Gesek Reservoir is located in Bintan Regency, Riau Island Province. The reservoir is one source of water for the community in Tanjungpinang City. One of the freshwater fish that inhabit the Sei Gesek Reservoir is the belida fish (Notopterus notopterus). The objective of this study was to the Relative Length of the Gut (RLG), type and food composition of belida fish (N. notopterus), and food comparative in the digestive tract of the belida fish (N. notopterus) with food resources in the substrate Sei Gesek reservoir, Bintan Regency, Riau Island. The method used in this research was the survey method. A sampling of belida fish (N. notopterus) was carried out in three months according to the fishing grounds. The data analysis used is Relative Length of the Gut (RLG), Index of Preponderance (IP), and Index of Electivity (E). The result showed that the total fish caught was 30, there were 16 males and 14 females. The relative length of the gut female and male belida fish (N. notopterus) were 0.21 and 0.25 respectively. Based on the relative length of the gut value, belida fish (N. notopterus) was classified as a carnivore. The food types of belida fish (N. notopterus) were fish, crustaceans, microalgae, macrophytes, annelids, nematodes, and detritus. Index of preponderance showed that the main food of belida fish (N. notopterus) in Sei Gesek Reservoir was small fish based on sex, the month of capture, and body length measurement. Index of electivity showed that the food type from the microalgae is Asterionella sp. and Closterium sp. not selected by belida fish (N. notopterus) as food.


2021 ◽  
Vol 919 (1) ◽  
pp. 012021
Author(s):  
S Sawestri ◽  
M Marini

Abstract Sembakung river is an important inland fishery in terms of fish production in North Kalimantan, Indonesia. This river is connected to the State of Malaysia, where the upstream part of this river is in the state of Malaysia. The present study was conducted to inform the diversity of fish fauna in the Sembakung river. Fish samples were collected from ten sampling stations of the Sembakung river at Tarakan district in North Kalimantan, Indonesia from March to November 2019. A total of 55 species of fish under 20 orders and 35 families were recorded. Cypriniformes were most leading order constituting 32.73% of the total fish population followed by Siluriformes (18.18%), Anabantiformes (10.91%), Gobiiformes (9.09%), Carangaria (5.45%), Eupercaria (3.64%), and 1.82% for others ordo. Fishes in this river are seriously affected by the various kinds of human development interventions and activities, especially in the areas of agriculture, forestry, fisheries, industries, and transport. Estimates from these indices were indications of low fish species composition and richness and unevenness in the population of fish in the Sembakung river. For sustainability of fishery resources, an adequate knowledge of species composition, diversity, and relative abundance of water bodies must be understood and vigorously pursued. Therefore, there is a need for the conservation and sustainable management of the fisheries resources of the Sembakung water body by relevant agencies.


Author(s):  
N. Syrovatka ◽  

The influence of naked oats on pisciculture, biological, hematological and biochemical parameters of commercial carp groups, as one of the components of the feed mixture in different ratios has been studied in the article. The aim of the experiment was to increase the fish productivity of ponds and to reduce feed costs for cultivation by meeting the physiological needs of commercial carp groups when using naked oats in carp feeding. The object of the study was age–1+ carps of Lubin scaly and framed intra-breed type of Ukrainian carp breed. For this purpose, three experimental groups of fish were formed by the method of analogues. Fish of the first experimental group (from July 1) were additionally introduced 30% of naked oats into the main diet, the fish of the second experimental group - 50% of naked oats, the third group was fed a feed mixture without added oats. As a result of the research done, it is proved that the addition of a mixture of naked oats has a positive effect on fish biological and physiological parameters of commercial carp. It was found out that the most effective is the additional feeding of naked oats in the amount of 30%. In particular, when the very amount of naked oats is added to the basic diet, the total fish productivity indicator increases by 7.7% relative to the control pond indicators, and feed costs are lower by 16.7%. The amount of hemoglobin in the blood of the first experimental group was higher relative to the control group, and the number of erythrocytes was significantly higher (P> 0.01). However, in the carp serum of the first experimental group the level of superoxide dismutase (P> 0.02) significantly increased while the level of catalase decreased.


Author(s):  
Richard Stafford ◽  
Zach Boakes ◽  
Alice E. Hall ◽  
Georgia C. A. Jones

AbstractTotal ocean carbon exceeds 40,000 GT either dissolved in the water column or buried in ocean sediments, and the ocean continues to sequester carbon from the atmosphere. Selective removal of predatory fish through extractive fishing alters the community structure of the ocean. This altered community results in increased biomass of more productive, low trophic level fish, higher overall fish respiration rates and lower carbon sequestration rates from fish, despite possible decreases in total fish biomass. High-pressure fishing on high trophic level fish, a globally occurring phenomenon, may result in as much as a 19% increase in respiration from fish communities overall. This increase in respiration will reduce sequestration rates and could prove highly significant in global carbon budgets. Preliminary estimates suggest a loss of sequestration equating to around 90Mt C.year−1 (~ 10% of total ocean sequestration or ~ 1% of anthropogenic fossil fuel emissions per year). Ultimately, to reduce these carbon emissions, fishing needs to be carbon optimised, alongside other fisheries management outcomes, which may mean that fewer higher trophic level fish are removed. This study highlights the potential magnitude of fishing on ocean carbon dynamics and presents the key uncertainties (including understanding the effects of fishing on zoo- and phytoplankton communities) we need to urgently research to accurately quantify the effects and model future fishing practices. Graphical Abstract


2021 ◽  
pp. 1-31
Author(s):  
Li Wang ◽  
Zhongxia Fu ◽  
Wei Deng ◽  
Shengdong Zhu ◽  
Chuan Zhang ◽  
...  

Abstract Preterm birth is the leading cause of perinatal mortality and morbidity. Some prospective cohort studies suggested that fish and shellfish consumption may affect the incidence of preterm birth. However, conflicting evidence exists on the relationship between fish and shellfish consumption and preterm birth. This retrospective study was conducted in Lanzhou, China, between 2010 and 2012. A total of 10,179 women were interviewed after delivery to collect information on their past intake of fish and shellfish using food frequency questionnaire. Clinical data including birth outcomes and maternal complications were extracted from medical records of the participants. Logistic regression models were used to estimate odds ratios and 95% confidence intervals to examine the association between fish and shellfish consumption and preterm birth and its clinical subtypes. Fish and shellfish consumption was associated with reduced risk of preterm birth (OR=0.65, 95%CI:0.56-0.77). Increasing frequency of fish and shellfish consumption, compared with no fish and shellfish consumption, were associated with decreasing odds of preterm birth: for ≤ 1 time/ week, OR = 0.74 (95% CI: 0.63-0.89); for ≥2 times a week, OR = 0.57 (95% CI:0.48-0.68). The P for trend was 0.023. Besides, increasing weekly total amount of fish and shellfish consumption, compared with no fish and shellfish consumption, were also associated with decreasing odds of preterm birth: for <350 g/week, OR = 0.67 (95% CI: 0.57-0.78); for ≥350 g/week, OR = 0.57 (95% CI:0.43-0.74). The P for trend was 0.011. Significant trend effect was also seen between fish and shellfish consumption and very preterm birth (P for trend =0.001) and spontaneous preterm birth (P for trend =0.003). Interaction was observed between total fish and shellfish consumption with maternal age (P for interaction=0.041) and pre-pregnancy BMI underweight (P for interaction=0.012). Maternal fish and shellfish consumption was associated with lower incidence of preterm birth. The findings support for the protective role of fish and shellfish consumption in preventing preterm birth and recommend for the national guideline of ≥350 g/week of fish and shellfish consumption among pregnant women.


Sign in / Sign up

Export Citation Format

Share Document