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1. A bioeconomic model of a fishery with saturated catch and variable price: Stabilizing effect of marine reserves on fishery dynamics

Author:
Moussaoui, Ali; Auger, Pierre
Source:
Ecological complexity 2021 v.45 pp. 100906
ISSN:
1476-945X
Subject:
stocking rate,   etc   ; bioeconomic models; equations; prices;     Show all 4 Subjects
Abstract:
... In this paper, we study a mathematical bio-economic model of a fishery with varying price. The three dimensional model describes the time evolution of the resource, the fishing effort and the price. The model is original because it considers a nonlinear harvesting function assumed to depend upon stock size and fishing effort with a saturation effect with respect to the resource as well as a price ...
DOI:
10.1016/j.ecocom.2020.100906

2. The influence of density and dominance on Pacific white shrimp (Litopenaeus vannamei) feeding behaviour

Author:
Bardera, Guillermo; Owen, Matthew A.G.; Façanha, Felipe N.; Alcaraz-Calero, Jose M.; Alexander, Mhairi E.; Sloman, Katherine A.
Source:
Aquaculture 2021 v.531 pp. 735949
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Litopenaeus vannamei; automation; computer software; feed intake; feeding behavior; juveniles; motivation; shrimp; shrimp culture;     Show all 10 Subjects
Abstract:
... Identifying correct stocking densities is an important concern for shrimp farming especially when intensification of shrimp production is growing in order to meet increasing demand. Increased stocking densities generate greater competition among individuals, reduced feeding efficiencies and increased water degradation. Little is known, however, about the effects of stocking density on feeding beha ...
DOI:
10.1016/j.aquaculture.2020.735949

3. Efficacy of chemical treatments for Acropora-eating flatworm infestations

Author:
Barton, Jonathan A.; Neil, Rachel C.; Humphrey, Craig; Bourne, David G.; Hutson, Kate S.
Source:
Aquaculture 2021 v.532 pp. 735978
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Acropora millepora; Platyhelminthes; aquaculture; bleaching; chemical treatment; corals; ethanol; levamisole; pest management; pests; praziquantel; seawater; trade;     Show all 14 Subjects
Abstract:
... Pest management is a critical component of aquaculture operations since high stocking densities can facilitate rapid pest infestation and high stock losses. The Acropora eating-flatworm, Prosthiostomum acroporae impact the health of captive Acropora colonies, which are commonly grown as part of coral aquaculture for trade, research and the hobbyist sector. We investigated the efficacy of anthelmin ...
DOI:
10.1016/j.aquaculture.2020.735978

4. Transportation of fertilized eggs and yolk-sac larvae of hilsa shad, Tenualosa ilisha (Hamilton, 1822) in different transportation systems

Author:
Chattopadhyay, D.N.; Chakraborty, A.; Ray, P.K.; Mandal, R.N.; Das, A.
Source:
Aquaculture 2021 v.532 pp. 736042
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Tenualosa ilisha; air; aluminum; bags; closed loop systems; eggs; fish larvae; oxygen; polyethylene; yolk sac;     Show all 11 Subjects
Abstract:
... Hilsa shad, Tenualosa ilisha has received much attention for their conservation through culture. Transportation mechanism of eggs and larvae is one of the major bottlenecks of hilsa culture. The present study aims to find out the best transporting system, stocking density (SD) and early life stages that record maximum survival after transport needed to facilitate hilsa culture. Eggs and yolk-sac l ...
DOI:
10.1016/j.aquaculture.2020.736042

5. Quantification of grazing efficacy, growth and health score of different lumpfish (Cyclopterus lumpus L.) families: Possible size and gender effects

Author:
Imsland, Albert Kjartan Dagbjartarson; Reynolds, Patrick; Hangstad, Thor Arne; Kapari, Lauri; Maduna, Simo Njabulo; Hagen, Snorre B.; Jónsdóttir, Ólöf Dóra Bartels; Spetland, Frank; Lindberg, Ken Ståle
Source:
Aquaculture 2021 v.530 pp. 735925
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Caligidae; Cylopterus lumpus; Salmo salar; breeding programs; cages; cataract; females; fish; lice; linear models; males; paternal effect;     Show all 13 Subjects
Abstract:
... To investigate the possible family influence on sea lice grazing of lumpfish on Atlantic salmon, ten families of lumpfish (N = 480) with a mean (± SD) weight of 54.8 ± 9.2 g were distributed among ten sea cages (5 × 5 × 5 m) each stocked with 400 Atlantic salmon with a mean (± SD) weight of 621.4 ± 9.2 g. All the ten cages were stocked with 48 lumpfish (12% stocking density). The stocking of cages ...
DOI:
10.1016/j.aquaculture.2020.735925

6. Economics of small-scale aquaponics system in West Africa: A SANFU case study

Author:
Benjamin, Emmanuel O.; Buchenrieder, Gertrud R.; Sauer, Johannes
Source:
Aquaculture economics & management 2021 v.25 no.1 pp. 53-69
ISSN:
1551-8663
Subject:
stocking rate,   etc   ; administrative management; aquaponics; case studies; economic feasibility; fish; food security; hydroponics; nitrogen; nutrition; Western Africa;     Show all 11 Subjects
Abstract:
... The combination of hydroponics and aquaculture in a closed system is the essence of aquaponics and soilless agriculture. Aquaponics is hypothesized to have the potential to improve nutrition security in developing countries, but this is an issue that has received limited attention. This study evaluates data from the small-scale aquaponics project “Sustainable Aquaponics for Nutritional and Food Se ...
DOI:
10.1080/13657305.2020.1793823

7. Survey-based estimates of Fmsy and its proxies

Author:
Horbowy, Jan; Hommik, Kristiina
Source:
Fisheries research 2020 v.229 pp. 105607
ISSN:
0165-7836
Subject:
stocking rate,   etc   ; data collection; herring; spawning; surveys; uncertainty; Baltic Sea;     Show all 7 Subjects
Abstract:
... A method to estimate Fₘₛy and its proxies based on survey indices of stock size and recruitment was developed and tested on simulated data sets and on five real stocks in the Baltic and Celtic Sea. The considered stocks were stocks with full analytical assessments (to compare the Fₘₛy estimates of the method with available analytical estimates), two stocks with assessments considered indicative of ...
DOI:
10.1016/j.fishres.2020.105607

8. Comparison of stocking time and density on Gulf Killifish growth in freshwater ponds

Author:
Chesser, Brittany M.; Allen, Peter J.
Source:
Aquaculture research 2020 v.51 no.8 pp. 3452-3459
ISSN:
1355-557X
Subject:
stocking rate,   etc   ; Fundulus grandis; baitfish; freshwater; juveniles; markets; ponds;     Show all 7 Subjects
Abstract:
... The Gulf Killifish (Fundulus grandis) is a popular baitfish and a candidate for commercial‐scale production. For inland production, ponds may need to be stocked at different times and densities to meet market demands. Therefore, in Experiment 1, juveniles were stocked into freshwater ponds at a density of 25,000 fish/ha, with two cohorts (mean total length (TL) = 3.92; 3.52 cm) stocked 1 month apa ...
DOI:
10.1111/are.14680

9. Production of bio oil from sweet lime empty fruit bunch by pyrolysis

Author:
Sukumar, V.; Manieniyan, V.; Senthilkumar, R.; Sivaprakasam, S.
Source:
Renewable energy 2020 v.146 pp. 309-315
ISSN:
0960-1481
Subject:
stocking rate,   etc   ; biochar; biofuels; feedstocks; fruits; heat; nitrogen; pyrolysis; temperature;     Show all 9 Subjects
Abstract:
... In this paper, the bio oil is obtained from sweet lime empty fruit bunch as feedstock using fixed bed reactor. The experimental study is to analyze the impacts of feedstock size, temperature and flow rate of nitrogen gas on the bio oil yield. The feed stock size, temperature and nitrogen gas flow rate were varied from 2 mm, 4 mm and 6 mm, 500 °C, 550 °C and 600 °C, 0.2 lit/min, 0.3 lit/min and 0 . ...
DOI:
10.1016/j.renene.2019.06.156

10. Stocking density and rearing environment affect external condition, gonad quantity and gonad grade in onshore sea urchin roe enhancement aquaculture

Author:
Warren-Myers, Fletcher; Swearer, Stephen E.; Overton, Kathy; Dempster, Tim
Source:
Aquaculture 2020 v.515 pp. 734591
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Strongylocentrotus purpuratus; aquaculture; aquaculture industry; cages; infrastructure; rearing;     Show all 7 Subjects
Abstract:
... Finding the ideal density to optimise growth, health and welfare of aquaculture species reared in cage or tank environments allows farmers to produce the best quality product per unit area. Appropriate stocking densities are well known for most major aquaculture species, but limited information exists for the developing sea urchin aquaculture industry. The temperate purple sea urchin Heliocidaris ...
DOI:
10.1016/j.aquaculture.2019.734591

11. Growth performance, physiological, and feeding behavior effect of Dicentrarchus labrax under different culture scales

Author:
Ma, Zhen; Li, Haixia; Hu, Yu; Fan, Jize; Liu, Ying
Source:
Aquaculture 2021 v.534 pp. 736291
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Dicentrarchus labrax; animal growth; bass; body weight; diurnal variation; feeding behavior; fish culture; fish development; growth performance; hunger; immunity; juveniles; satiety; survival rate;     Show all 15 Subjects
Abstract:
... The small culture scale provided minimal guidance for production due to the exaggerated amplification error, although maintaining small units in the experiment economically and administratively is easy. The objective of this study was to compare the growth performance, physiological indicators, and feeding behavior effect of Dicentrarchus labrax (seabass) juveniles under different culture scales a ...
DOI:
10.1016/j.aquaculture.2020.736291

12. RNA/DNA ratio to assess the growth performance in postlarvae of the pearl oyster Pinctada fucata (Gould, 1850)

Author:
Chang, Guoliang; Wang, Hui; Wang, Long; Xue, Chaopeng; Zhu, Chuankun; Zhang, Ji; Wu, Nan
Source:
Aquaculture reports 2021 v.19 pp. 100600
ISSN:
2352-5134
Subject:
stocking rate,   etc   ; DNA; Isochrysis; Pavlova; Pinctada fucata; RNA; algae; aquaculture; aquatic animals; cells; correlation; design; equations; growth performance; laboratory experimentation; models; postlarvae; regression analysis; specific growth rate; temperature;     Show all 20 Subjects
Abstract:
... RNA/DNA ratio (RDR) has been reported to be a feasible biochemical indicator for measuring the growth of numerous aquatic animal species. Nevertheless, its applicability has not been investigated to date in the pearl oyster Pinctada fucata (Gould, 1850). A laboratory experiment was undertaken to determine the relationship between RDR and growth rate in P. fucata postlarvae. The face-centered centr ...
DOI:
10.1016/j.aqrep.2021.100600

13. Enhanced growth response and stress mitigation of genetically improved farmed Tilapia in a biofloc integrated aquaponic system with bell pepper

Author:
Saseendran, Sanitha; Dube, Kiran; Chandrakant, M.H.; Babitha Rani, A.M.
Source:
Aquaculture 2021 v.533 pp. 736200
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; aquaponics; biofloc technology; crop production; dissolved oxygen; farmed fish; genetic improvement; nitrate nitrogen; protein efficiency ratio; rearing; specific growth rate; sweet peppers; water quality;     Show all 13 Subjects
Abstract:
... The experimental trial was performed for 120 days with different stocking densities of fish ie, 150 no.m⁻³(T1), 250 no.m⁻³ (T2) and 350 no.m⁻³ (T3) in an aquaponic system integrated with biofloc technology (BFT) and the control aquaponic unit with stocking density of 150 no.m⁻³ without biofloc. Theweight and length of fish at the time of stocking were 1.44 ± 0.12 gand 3.92 ± 0.09 cm respectively. ...
DOI:
10.1016/j.aquaculture.2020.736200

14. Ameliorating deleterious effects of high stocking density on Oreochromis niloticus using natural and biological feed additives

Author:
Mahmoud, H.K.; Reda, F.M.; Alagawany, M.; Farag, M.R.
Source:
Aquaculture 2021 v.531 pp. 735900
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Aeromonas hydrophila; Glycyrrhiza glabra; Oreochromis niloticus; antioxidants; body weight; diet; disease resistance; feed additives; feed intake; fingerlings; immunity; mortality; plant extracts; specific growth rate;     Show all 15 Subjects
Abstract:
... The current study was conducted to investigate the stress effect of high stocking density and to evaluate the efficiency of Glycyrrhiza glabra extract (LE) and protexin concentrate (PC) in Oreochromis niloticus. A total of 360 Nile tilapia fingerlings were divided into 5 groups. The 1st and the 2nd groups were stocked at a rate of 10 fish/aquarium (control) and 20 fish/aquarium (HSD), respectively ...
DOI:
10.1016/j.aquaculture.2020.735900

15. Is culture performance of juvenile sandfish, Holothuria scabra, in ocean-based nursery systems influenced by proximity to milkfish (Chanos chanos) farms and hapa net mesh size?

Author:
Gorospe, Jay RC.; Juinio-Meñez, Marie Antonette; Southgate, Paul C.
Source:
Aquaculture 2021 v.531 pp. 735812
ISSN:
0044-8486
Subject:
stocking rate,   etc   ; Chanos chanos; Holothuria scabra; biomass; chlorophyll; field experimentation; fish farms; food availability; grazing intensity; growth performance; hatcheries; intraspecific competition; juveniles; mariculture; monitoring; periphyton; rearing; Philippines;     Show all 18 Subjects
Abstract:
... The impacts of proximity to milkfish farms (i.e. ‘close’, ‘intermediate’ and ‘distant’) and different hapa net mesh sizes (i.e. 400 μm and 1 mm) on periphyton characteristics and growth performance of sandfish, Holothuria scabra, juveniles (4.6 ± 0.1 mm), were evaluated in a 30-day field experiment in the Guiguiwanen Channel at Bolinao, North-western Philippines. Growth and survival of sandfish ju ...
DOI:
10.1016/j.aquaculture.2020.735812

16. Long-term plankton community dynamics and influencing factors in a man-made shallow lake, Lake Dishui, China

Author:
Zhao, Kun; Cao, Yue; Pang, Wanting; Wang, Lizhu; Song, Kun; You, Qingmin; Wang, Quanxi
Source:
Aquatic sciences 2021 v.83 no.1 pp. 2
ISSN:
1015-1621
Subject:
stocking rate,   etc   ; Cladocera; Copepoda; Rotifera; biocenosis; climate; environmental factors; fish; lakes; pH; phytoplankton; planktivores; predation; total nitrogen; total phosphorus; water quality; water salinity; zooplankton; China;     Show all 19 Subjects
Abstract:
... Understanding how long-term environmental variation and biotic interaction determine biological assemblages is critical for evaluating the response of biological communities to anthropogenic and climate changes. We sampled plankton and water quality from a man-made lake monthly from 2006 to 2015 for the period from after creation to 13-year old of the lake. We used correlation, variation partition ...
DOI:
10.1007/s00027-020-00758-4

17. Defoliation Dynamics in Kikuyugrass Pastures Subjected to Intensities of Defoliation

Author:
Medeiros-Neto, Cauby; Schmitt, Daniel; Martins, Clóvis David Medeiros; Diavão, Jaciara; Sbrissia, André Fischer
Source:
Agronomy 2020 v.10 no.12
ISSN:
2073-4395
Subject:
stocking rate,   etc   ; Cenchrus clandestinus; agronomy; area; defoliation; dynamics; forage; frequency; grazing; height; leaves; pastures; tillers;     Show all 13 Subjects
Abstract:
... Some recent papers have recommended moderate intensities of defoliation in order to maximize herbage intake at different time-scales. Most of them, however, did not assess the grazing dynamics of individual tillers during the stocking period. Therefore, the objective of this work was to describe the defoliation dynamics of kikuyugrass (Pennisetum clandestinum Hochst ex. Chiov) pastures subjected t ...
DOI:
10.3390/agronomy10121939

18. Effects of stocking density on large white, commercial tom turkeys reared to 20 weeks of age: 1. growth and performance

Author:
Bartz, B.M.; Anderson, K.A.; Oviedo-Rondón, E.O.; Livingtson, K.; Grimes, J.L.
Source:
Poultry science 2020 v.99 no.11 pp. 5582-5586
ISSN:
0032-5791
Subject:
stocking rate,   etc   ; Large White; body weight; industry; males; rearing; regression analysis; turkeys;     Show all 8 Subjects
Abstract:
... Industry standards for turkey stocking densities are variable and may not represent the more rapidly growing strains currently available. Therefore, a study was completed to evaluate 4 stocking densities: a nominal density (0.3525 m²/bird), 10% tighter density (0.3169 m²/bird), 10% looser density (0.3882 m²/bird), and 20% looser density (0.4238 m²/bird) on the effects on large white, commercial ma ...
DOI:
10.1016/j.psj.2020.08.024

19. Effects of sperm to egg ratio, stocking density, delay of gamete contact, temperature and salinity on fertilisation success and D-larvae production of green mussel, Perna viridis

Author:
Piñosa, Lily Anne G.; Amar, Mary Jane A.; Capaque, Thereze Pauline V.; Laureta, Liberato V.; Pedroso, Fiona L.; Rendaje, Donna C.; Cadangin, Josel F.; Maquirang, Jean Rose H.; Mero, Fedelia Flor C.
Source:
Molluscan research 2020 v.40 no.4 pp. 345-353
ISSN:
1448-6067
Subject:
stocking rate,   etc   ; Perna viridis; eggs; hatcheries; mariculture; mussels; protocols; research; salinity; spermatozoa; temperature;     Show all 11 Subjects
Abstract:
... Mariculture of green mussel (Perna viridis) is being hindered by reliance on seed from the wild. Hatchery production helps increase seed stock, but little is known about the factors that may affect hatchery practices. Development of hatchery protocols to optimise production is therefore needed. This study determined factors affecting fertilisation and survival at the D-hinged stage namely: sperm t ...
DOI:
10.1080/13235818.2020.1836715

20. Ranking policies to achieve sustainable stocking rates in Inner Mongolia

Author:
Li, Ping; Bennett, Jeff; Zhang, Bao
Source:
Journal of environmental economics and policy 2020 v.9 no.4 pp. 421-429
ISSN:
2160-6552
Subject:
stocking rate,   etc   ; behavior; environmental economics; issues and policy; loans; models; monitoring; objectives; prediction; subsidies; China;     Show all 11 Subjects
Abstract:
... Different mixes of the same policy attributes at different levels can deliver different ecological and social results. The prediction and assessment of policy impacts can help policy makers make better decision. Using the results of a contingent behaviour study, the ability of alternative policy instruments to reduce stocking rates in Inner Mongolia to levels that are regarded as ecologically sust ...
DOI:
10.1080/21606544.2020.1726210