scholarly journals Using interview-based recall surveys to estimate cod Gadus morhua and eel Anguilla anguilla harvest in Danish recreational fishing

2012 ◽  
Vol 69 (2) ◽  
pp. 323-330 ◽  
Author(s):  
Claus Reedtz Sparrevohn ◽  
Marie Storr-Paulsen
Keyword(s):  
Gadus Morhua ◽  
Total Yield ◽  
Anguilla Anguilla ◽  
Recreational Fishing ◽  
Marine Science ◽  
Outdoor Activity ◽  
The Impact

Abstract Sparrevohn, C. R., and Storr-Paulsen, M. 2012. Using interview-based recall surveys to estimate cod Gadus morhua and eel Anguilla anguilla harvest in Danish recreational fishing. – ICES Journal of Marine Science, 69: 323–330. Marine recreational fishing is a popular outdoor activity in Denmark, practised by both anglers and passive gear fishers. However, the impact on the targeted stocks is unknown, so to estimate the 2009 harvest of cod Gadus morhua and eel Anguilla anguilla, two separate interview-based surveys were initiated and carried out in 2009/2010. The first recall survey exclusively targeted fishers who had been issued with the mandatory Danish fishing licence. The second survey was designed to identify those who fish without a licence. It was estimated that 1231 t of cod were harvested in 2009, corresponding to 4.8% of the entire Danish cod yield (recreational harvest + commercial landings). Area differences were found, and, in certain areas, the recreational harvest of cod accounted for more than 30% of the total yield. The majority (81%) of the recreational cod harvest was taken by anglers. Eels, however, are almost exclusively caught with passive gear (fykenets) and a total of 104 t year−1 was harvested, which corresponds to 19% of the entire Danish eel yield. The inclusion of the harvest taken by fishers without a valid licence was important and added almost 20% to the estimated harvest.

The occurrence and distribution of nonylphenols and nonylphenol ethoxylates in different species of fish

2020 ◽  
Vol 22 (4) ◽  
pp. 1057-1070 ◽  
Author(s):  
Wiesława Ruczyńska ◽  
Joanna Szlinder-Richert ◽  
Tomasz Nermer
Keyword(s):  
Gadus Morhua ◽  
Anguilla Anguilla ◽  
Nonylphenol Ethoxylates ◽  
Platichthys Flesus

The aim of this study was to analyze the accumulation of nonylphenols (NPs) and nonylphenol ethoxylates (NPEOs) in the muscles, liver, and bile of flounder (Platichthys flesus), cod (Gadus morhua), and eels (Anguilla anguilla).

scholarly journals High occurrence of Anisakidae at retail level in cod (Gadus morhua) belly flaps and the impact of extensive candling

2020 ◽  
pp. e00108
Author(s):  
E. Mercken ◽  
I. Van Damme ◽  
B. Šoba ◽  
S. Vangeenberghe ◽  
A. Serradell ◽  
...  
Keyword(s):  
Gadus Morhua ◽  
High Occurrence ◽  
The Impact

scholarly journals The Impact of Salt Stress on Plant Growth, Mineral Composition, and Antioxidant Activity in Tetragonia decumbens Mill.: An Underutilized Edible Halophyte in South Africa

Horticulturae ◽  
2021 ◽  
Vol 7 (6) ◽  
pp. 140
Author(s):  
Avela Sogoni ◽  
Muhali Jimoh ◽  
Learnmore Kambizi ◽  
Charles Laubscher
Keyword(s):  
Antioxidant Activity ◽  
Plant Growth ◽  
Mineral Composition ◽  
Nutrient Solution ◽  
Crop Production ◽  
Saline Water ◽  
Total Yield ◽  
Control Treatment ◽  
Antioxidant Power ◽  
The Impact

Climate change, expanding soil salinization, and the developing shortages of freshwater have negatively affected crop production around the world. Seawater and salinized lands represent potentially cultivable areas for edible salt-tolerant plants. In the present study, the effect of salinity stress on plant growth, mineral composition (macro-and micro-nutrients), and antioxidant activity in dune spinach (Tetragonia decumbens) were evaluated. The treatments consisted of three salt concentrations, 50, 100, and 200 mM, produced by adding NaCl to the nutrient solution. The control treatment had no NaCl but was sustained and irrigated by the nutrient solution. Results revealed a significant increase in total yield, branch production, and ferric reducing antioxidant power in plants irrigated with nutrient solution incorporated with 50 mM NaCl. Conversely, an increased level of salinity (200 mM) caused a decrease in chlorophyll content (SPAD), while the phenolic content, as well as nitrogen, phosphorus, and sodium, increased. The results of this study indicate that there is potential for brackish water cultivation of dune spinach for consumption, especially in provinces experiencing the adverse effect of drought and salinity, where seawater or underground saline water could be diluted and used as irrigation water in the production of this vegetable.

scholarly journals Documentation of multiple species of marine fish trapped in Atlantic salmon sea-cages in Norway

2018 ◽  
Vol 31 ◽  
pp. 31
Author(s):  
Per Gunnar Fjelldal ◽  
Monica F. Solberg ◽  
Kevin A. Glover ◽  
Ole Folkedal ◽  
Jonatan Nilsson ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Trutta ◽  
Gadus Morhua ◽  
Mesh Size ◽  
Anguilla Anguilla ◽  
Wild Fish ◽  
Melanogrammus Aeglefinus ◽  
European Eel ◽  
Farmed Salmon ◽  
Sea Trout

The production of salmonids in sea-cages has been developed for monoculture of the target species. However, we show here for the first time, that wild fish may enter sea-cages used for farming of Atlantic salmon (Salmo salar L.) in Norway, out-grow the mesh size, and thereafter become permanently trapped. Within seven different sea-cages located in western Norway, eight different species of wild fish were identified; European eel (Anguilla anguilla), sea trout (Salmo trutta L.), cod (Gadus morhua), haddock (Melanogrammus aeglefinus), saithe (Pollachius virens), pollack (Pollachius pollachius), hake (Merluccius merluccius) and whiting (Merlangius merlangus). In the two most extreme cases, a 5 × 5 × 7 m cage with 311 farmed salmon (903 g) also contained 542 whiting (79 g), 77 haddock (43 g), and 5 cod (26 g), and a 12 × 12 × 15 m cage with 1695 farmed salmon (559 g) also contained 1196 haddock (35 g), 1115 whiting (31 g), 46 cod (23 g), 23 saithe (48 g), 15 pollock (22 g), 5 sea trout (54 g), and 2 hake (29 g). The present study thus demonstrates that aquaculture cages designed for monoculture may attract and effectively ‘trap’ wild fish. We did not investigate the frequency of this occurrence, and the ecological significance of these observations remains unclear. However, with the ever-increasing number of sea-cages used for global aquaculture, this is clearly a topic for further research.

scholarly journals Characteristics of Marine Recreational Fishing in the anakkale Strait (Turkey)

2010 ◽  
Vol 11 (2) ◽  
pp. 315 ◽  
Author(s):  
V. UNAL ◽  
D. ACARLI ◽  
A. GORDOA
Keyword(s):  
Time Of Day ◽  
Recreational Fishing ◽  
Commercial Fishing ◽  
Catch Per Unit Effort ◽  
Pomatomus Saltatrix ◽  
Night Time ◽  
Policy Information ◽  
Surveillance Programs ◽  
Catch Composition ◽  
The Impact

The economic and harvest impacts of Marine Recreational Fishing (MRF) in Çanakkale Strait were analysed along with fishing policy, sociology and habits of fishers. Data sources included field survey data carried out along the entire length of the Çanakkale strait and policy information gathered from published sources. MRF policy is commendable, even in the fishing tourism sector, and is better developed than that in many other European countries. In Çanakkale, 9.9% of the population is recreational fishers. Recreational fishers are typically men (90%), primarily those between the ages of 25 and 49 yrs. The occupation of the recreational fishers ranged from self-employed (28%), students (28%), retired persons (22%) and public employees (15%), to currently-unemployed persons (7%). An analysis of diel behaviour showed that most recreational fishers preferred fishing during the day (56.1%), while the evening was the next most preferred time for fishing (18%), followed by the night-time (9.8%), while a substantial number of recreational fishers (16.1%) reported that they fished at any time of day. The most popular type of fishing was shore-based (68%), followed by boat-based (21%), and underwater fishing (11%). The mean daily fishing times were 6.07 h d-1, 6.18 h d-1 4.75 d-1 for boat-based, underwater and shore-based fishing, respectively. Summer and autumn were the preferred seasons for shore-based and underwater fishing, while autumn and winter were preferred for boat-based fishing. The highest Catch per Unit Effort (CPUE) was observed for boat-based fishing (2.77 kg h-1), followed by underwater (0.97 kg h-1) and shore-based fishing (0.81 kg h-1). The catch composition included 51 species, though the catch composition of each fishing type was mostly comprised of only 3 or 4 species. The impact of the MRF harvest was high (30% of commercial fishing), particularly for bluefish (Pomatomus saltatrix) and picarel (Spicara smaris) species. The economic impact of MRF was highly negative. Several indicators including the following revealed a high percentage of trading catch (47%) being conducted under the guise of a recreational label: annual fishing intensity, total costs, target species, and sales. At present, it is evident that the highly developed recreational fishing policy in Turkey is not sufficient to ensure that recreational fishing is sustainable or to prevent fishing conflicts in Turkey. This study revealed the need for establishing monitoring, control and surveillance programs to ensure the sustainability of fish resources and fisheries including MRF.

scholarly journals Survey on the Progression of Myopia in Children and Adolescents in Chongqing During COVID-19 Pandemic

2021 ◽  
Vol 9 ◽  
Author(s):  
Wujiao Wang ◽  
Lu Zhu ◽  
Shijie Zheng ◽  
Yan Ji ◽  
Yongguo Xiang ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Online Courses ◽  
Online Classes ◽  
Outdoor Activity ◽  
Digital Devices ◽  
Eye Health ◽  
Uncorrected Visual Acuity ◽  
Health Related ◽  
The Mean ◽  
The Impact

Background: The Covid-19 pandemic restricts children and adolescents from doing normal daily activities such as playing outdoors and going to school. The incidence and prevalence of myopia have increased during the COVID-19 pandemic. The aim of this study was to investigate and evaluate the impact of the home confinement during the COVID-19 pandemic on the progression of myopia among children and adolescents in Chongqing, China.Methods: The survey was conducted by using stratified samplings. Samples were randomly selected from the 2019 National Student Physique and Health Survey database, and their visual function and refractive data were compared with those in 2020. Vision-related behavior questionnaire including digital screen exposure was applied to investigate the correlation between eye parameter and eye health-related behavior.Results: A total of 1,733 and 1,728 students were enrolled in 2020 and 2019, respectively. The percentage of myopia students was 55.02% in 2020, which was higher than that in 2019 (44.62%). The mean uncorrected visual acuity (UCVA, LogMAR, 0.35 ± 0.42) in 2020 was higher than that in 2019 (0.27 ± 0.36, P < 0.001). The mean spherical equivalent (SE) refraction (−1.94 ± 2.13 D) in 2020 was lower than that in 2019 (−1.64 ± 5.49 D, P < 0.001). For students who used digital devices for online courses, the mean SE in the television group (−1.10 ± 1.49 D) was better than that in the computer group (−2.03 ± 2.37 D, P = 0.0017) and in the cell phone group (−2.02 ± 2.09 D, P = 0.0028). The average duration of online classes (r = −0.27, P < 0.0001), the number of online classes per day (r = −0.33, P < 0.0001), as well as digital screen exposure time (r = −0.20, P < 0.0001) were negatively correlated with SE, and the average time of outdoor activity (r = 0.20, P < 0.0001) was positively correlated with SE.Conclusions: Increased digital screen exposure contributes to myopic progression in children and adolescents of Chongqing during the COVID-19 pandemic. Suitable digital devices should be provided for online classes and outdoor activity should be advocated to prevent myopic pandemic.

scholarly journals Overcoming Parent Strategies with Down Syndrome (DS) Children

2019 ◽  
Vol 4 (1) ◽  
pp. 54-75
Author(s):  
Tania Nurmalita
Keyword(s):  
Down Syndrome ◽  
Coping Strategy ◽  
Coming Out ◽  
Parenting Program ◽  
Religious Activity ◽  
Outdoor Activity ◽  
Exclusion Criteria ◽  
The Family ◽  
The Impact ◽  
Final Amount

Being a part of the family who has children with special needs like Down Syndrome (DS) of course really challenging for facing daily activities with children with DS around. The aim of this literature review is to reveal about how parents of children with DS applied coping strategy to face daily life and support their child. The sources were collected online from 4 journals databases. Those databases are ProQuest, SAGE Journals, Science Direct, and ERIC. Articles that were taken by researcher were published in year 2009-2019. Researcher found 179 journals and selected by screening inclusion and exclusion criteria, the final amount of conducted and reviewed journals are 12 papers. Based on review that had been done, all of the parents of children with DS did some kinds of coping strategy in parenting. The strategies that used are: attribution technique in accepting their child’s condition, implementing the positive attitude towards their children’s condition, getting more intense in religious activity and got closer to God, looking for the organization and community that related to DS, and also doing more sports or outdoor activity as a coming out purpose. Finding out the parents’ coping strategy and the impact for the DS child will be the basis of conducting parenting program effectively and hopefully this program will be effective in optimizing the development of DS child.

scholarly journals First Report of Garlic common latent virus Infecting Garlic in Sudan

Plant Disease ◽  
2013 ◽  
Vol 97 (4) ◽  
pp. 562-562 ◽  
Author(s):  
K. Hamed ◽  
W. Menzel ◽  
M. E. Mohamed ◽  
K. A. Bakheet ◽  
S. Winter
Keyword(s):  
Sequence Similarity ◽  
Total Yield ◽  
Latent Virus ◽  
Nucleic Acid Binding ◽  
Rt Pcr ◽  
Terminal Part ◽  
Leaf Sample ◽  
First Report ◽  
Garlic Common Latent Virus ◽  
The Impact

Garlic (Allium sativum L.) is one of the most important vegetable field crops in Sudan, cultivated on an area of more than 6,000 ha with a total yield of 27,000 t in 2010 (faostat.fao.org). As part of a project which started in 2010 to improve the garlic production in Sudan, samples from local varieties showing severe mosaic and/or mottling were collected in winter 2011 from the main production areas in River Nile State, Northern State, and Darfur State. The plant material used for garlic production came from Sudan and was not imported. Because no reliable data were available on which viruses occur in garlic in Sudan, specific tests were initially omitted. In order to get an overview of the viruses present, dsRNA was prepared of a mixed leaf sample (12 leaves of different samples). This resulted in a high molecular weight dsRNA of approximately 9 kbp that served as template for a random RT-PCR followed by cloning and sequencing (3). Three identical clones originating from one PCR product covering the C-terminal part of the coat protein to the N-terminal part of the nucleic acid binding protein showed the highest sequence similarity to Garlic common latent virus (GarCLV). The nucleotide sequence identities of the 554-bp insert range from 85% to an isolate from India (Accession No. FJ154841) up to 97% to a GarCLV isolate from The Netherlands (AB004804), identifying the virus as a Sudanese isolate of GarCLV, one of the most common garlic infecting viruses. GarCLV belongs to the genus Carlavirus (1) and has previously been reported from Asia, Europe, and South America ( http://sdb.im.ac.cn/vide/descr352.htm ). In order to confirm these results, a double antibody sandwich (DAS)-ELISA was performed with six individual garlic samples in which five samples showed a clear reaction with a GarCLV specific antiserum (AS-0230, DSMZ, Germany). The occurrence of GarCLV could be further confirmed for the ELISA positive samples by a specific RT-PCR using the primers published by Majumder and Baranwal (2). Fragments of the expected size were obtained for all five samples. In addition, one of the positive samples was examined by electron microscopy (Dr. K. Richert-Pöggeler, JKI Braunschweig); filamentous flexous particles typical for carlaviruses could be observed. The random RT-PCR sequence obtained in this study has been submitted to GenBank (KC013030). To our knowledge, this is the first report of GarCLV in garlic in Sudan and Africa. The impact of GarCLV on garlic production in Sudan needs to be evaluated, but the awareness of the occurrence of the virus and the availability of a reliable diagnostic tool will help to select virus-free propagation material. This will form the basis for a sustainable garlic production. References: (1) A. M. Q. King et al. Virus Taxonomy 924, 2012. (2) S. Majumder and V. K. Baranwal. Plant Dis. 93:106, 2009. (3) W. Menzel et al. Arch. Virol. 154:1343, 2009.

Wpływ metod odchwaszczania plantacji na plonowanie i zawartość olejku w kwiatostanach wybranych odmian nagietka lekarskiego (Calendula officinalis L.)

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Romuald Mordalski ◽  
Waldemar Buchwald ◽  
Elżbieta Bilińska ◽  
Hanna Zalińska ◽  
Wojciech A. Kucharski
Keyword(s):  
Essential Oil ◽  
Field Experiments ◽  
Total Yield ◽  
Dry Mass ◽  
Raw Material ◽  
Calendula Officinalis ◽  
Medicinal Use ◽  
Manual Weeding ◽  
Calendula Officinalis L ◽  
The Impact

Introduction. Marigold (Calendula officinalis L.) is an annual plants belongs to Asteraceae family. The species is widespread in the world and have a long tradition of medicinal use with multidirectional action. Aim. The field experiments were carried out to assess the impact of genetic (cultivar) and environmental factors on yielding variability and biosynthesis of essential oil in conditions of conventional cultivation of marigold after using different methods of plantation weeding. Material and methods. The research material were two cultivars of marigold such as Orange King and Indian Prince. The following activity were tested: 1) spraying of Fusilade Forte 150 EC (1 l • ha-1), 2) spraying Fusilade Forte 150 EC (1 l • ha-1) + manual weeding, 3) manual weeding, 4) no weeding – control. The scope of the research included assessment of marigold yield (inflorescence) and determination of the essential oil contents in dry mass of raw material. Results. Regardless of the cultivar, a non-chemical methods (mechanical weeding in interrows and manual in rows) gave the highest efficiency of weed control. Similar results observed after using chemical weeding with manual weeding. In these cases the yields were at least 2.5 times higher than obtained from the control. The total yield of dry mass of inflorescence for the above methods was 6.35 and 5.53 q • ha-1 for Orange King cultivars, slightly lower result obtained for cultivar of Indian Prince (4.81 and 4.12 q • ha-1). It was also shown that the content of essential oil in the raw material ranged from 0.25 to 0.37% and was independent from the cultivar. Conclusions. The Orange King cultivar of marigold yielded better than Indian Prince in analogous methods of plantation weeding. The highest effectiveness of weed plantation was found using a non-chemical method (mechanical weeding in interrows and manual weeding in rows) and using chemical weeding with manual weeding. It was shown that the content of essential oil in the inflorescences of both examined cultivars was similar.

Sign in / Sign up

Export Citation Format

Share Document