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Journal articles on the topic 'Gear selectivity'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Mandal, Basudev. "A Study on the Selectivity of Different Fishing Gear." Indian Journal of Pure & Applied Biosciences 12, no. 2 (2024): 8–19. http://dx.doi.org/10.18782/2582-2845.9072.

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The selectivity of fishing gears plays a pivotal role in shaping the dynamics of aquatic ecosystems and fisheries sustainability. Through a comprehensive examination of trawl nets, gill nets, and longlines, this paper delves into the factors influencing selectivity, including gear design, selectivity criteria, selectivity terminologies, selection curves, and impacts. Drawing upon scientific research, empirical evidence, and case studies from around the world, this paper highlights the effectiveness of different selectivity measures in balancing the extraction of target species with the conserv

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2

Li, Yan, and Tyler Wagner. "Does incorporating gear selectivity during macroscale investigations of fish growth reduce size-selective sampling bias in parameter estimates?" Canadian Journal of Fisheries and Aquatic Sciences 76, no. 11 (2019): 2089–101. http://dx.doi.org/10.1139/cjfas-2018-0355.

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Understanding of fish growth, the spatial variability in individual growth, and the potential drivers of such variability is a fundamental component of many ecological investigations. However, sampling gears are always size-selective, and this selectivity can result in biased parameter estimates that can lead to, for example, biased stock assessments that use growth estimates. Using seven flathead catfish (Pylodictis olivaris) populations from across the USA as an example, we investigated to what degree the incorporation of gear selectivity in growth models reduces size-selective bias in the e

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Baihaqi, Faqih, and Shafira Bilqis Annida. "Selectivity of the Traps and Push Net Fishing Gear in the Glass Eels (Anguilla spp.) Capture Fishery in the Cikaso River Waters, Sukabumi, Indonesia." International Journal of Contemporary Sciences (IJCS) 2, no. 1 (2024): 57–68. https://doi.org/10.55927/ijcs.v2i1.12292.

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Selectivity is a standard of the level of friendliness of a fishing gear that is reviewed based on the diversity of catches obtained. Nowadays, fishing gear construction and techniques are developed to obtain selective fishing methods. This study compared the selectivity of traps and push nets in glass eel fishing in the Cikaso River, Indonesia. The study was conducted from December 2020 to April 2021. The catch diversity index and relative abundance were used to analyze the selectivity of catch diversity in both fishing gears. Comparative analysis shows that push nets have slightly better sel

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Lee, Sung Il, Eun-Gyu Kim, Jae-Hyeong Yang, and Chang-Ik Zhang. "Stock assessment and management implications of sailfin sandfish (Arctoscopus japonicus) caught by multiple fishing gears with different selectivity in Korean waters." PeerJ 13 (July 7, 2025): e19602. https://doi.org/10.7717/peerj.19602.

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The yield per recruit (YPR) model developed by Berverton & Holt in 1957 is widely used to determine the optimal age at first capture (tc) and optimal fishing intensity (F0.1) for the sustainable use of fish stocks. The YPR model is mainly applied to fishing gears, including trawlers and Danish seines, as individual gear types. In practice, fishery resources are predominantly harvested using multiple fishing gears rather than using a single fishing gear, with selectivity differing among the various gears employed. Therefore, management reference points, such as F0.1 or F40%, should be deriv

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Tupamahu, Agustinus, Haruna Haruna, Barbara G. Hutubessy, Stany R. Siahainenia, Albert Ch Nanlohy, and Kedswin Hehanusa. "Supperior Fishing Gear for Coral Reef Fishes in Western Seram Regency." Agrikan: Jurnal Agribisnis Perikanan 14, no. 1 (2021): 54–64. http://dx.doi.org/10.29239/j.agrikan.14.1.54-64.

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Various fishing gears that are operated in the coral reef waters of Western Seram Regency have their own selectivity, capture various species of fish, and have an impact on the damage to coral reef ecosystems. This study aims to determine the leading reef fishing gears in Western Seram District. The survey method is through observations and interviews with fishermen who conduct fishing activities of coral species. Respondents are determined by propulsive sampling, the selection of superior fishing gear is done by the scoring method. The results showed that the fishing gear classified into the

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MacLennan, David N. "Fishing gear selectivity: an overview." Fisheries Research 13, no. 3 (1992): 201–4. http://dx.doi.org/10.1016/0165-7836(92)90076-6.

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7

Millar, Russell B. "Reliability of size-selectivity estimates from paired-trawl and covered-codend experiments." ICES Journal of Marine Science 67, no. 3 (2009): 530–36. http://dx.doi.org/10.1093/icesjms/fsp266.

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Abstract Millar, R. B. 2010. Reliability of size-selectivity estimates from paired-trawl and covered-codend experiments. – ICES Journal of Marine Science, 67: 530–536. To determine the size selectivity of a trawl codend from sea trials, the researcher must choose between using paired (experimental and control) and covered-codend gears. The paired-gear method has the advantage that the experimental codend can be deployed without modification, but has the disadvantage of a more complex statistical analysis. It has previously been claimed that this analysis is inherently biased regardless of samp

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8

Branch, Trevor A. "Reply to the comment by Francis on “Differences in predicted catch composition between two widely used catch equation formulations”Appears in Can. J. Fish. Aquat. Sci. 66: 126–132." Canadian Journal of Fisheries and Aquatic Sciences 67, no. 4 (2010): 766–68. http://dx.doi.org/10.1139/f10-024.

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Francis (2010. Can. J. Fish. Aquat. Sci. 67: 763–765) writes a thoughtful response detailing concerns with my suggestion that the continuous (Baranov) catch formulation is preferable to the discrete catch formulation when fishing mortality is high (T.A. Branch. 2009. Can. J. Fish. Aquat. Sci. 66: 126–132). He suggests the discrete formulation allows for multiple gear encounters and that formulation choice should depend on which formulation better fits the data. Here I first distinguish between gear selectivity and availability and then show that our two views are complementary: the original as

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9

Browne, D., C. Minto, R. Cosgrove, et al. "A general catch comparison method for multi-gear trials: application to a quad-rig trawling fishery for Nephrops." ICES Journal of Marine Science 74, no. 5 (2017): 1458–68. http://dx.doi.org/10.1093/icesjms/fsw236.

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Expeditious uptake of quad-rig trawling in the economically important Irish fishery for Nephrops norvegicus outpaced technical understanding of this newly introduced gear. The main driver for its introduction is increased catch rates of Nephrops. Higher Nephrops discard rates associated with quad-rig trawling are likely to be problematic under the landing obligation unless size selectivity can be improved. Catch comparison methods are suitable for assessing the performance of fishing gear modifications to reduce discards. Utilizing a quad-rig potentially increases the number of gears that can

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10

Cuende, Elsa, Manu Sistiaga, Bent Herrmann, and Luis Arregi. "Optimizing size selectivity and catch patterns for hake (Merluccius merluccius) and blue whiting (Micromesistius poutassou) by combining square mesh panel and codend designs." PLOS ONE 17, no. 1 (2022): e0262602. http://dx.doi.org/10.1371/journal.pone.0262602.

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Gear modifications in fisheries are usually implemented to obtain catch patterns that meet management objectives. In the Basque bottom trawl fishery, gear regulations include the use of a square mesh panel (SMP) placed at the top panel of the extension piece of the trawl to supplement diamond mesh codend selectivity. However, the catch patterns obtained with this combination have raised concern among scientists and authorities. This study combines new data on different SMP and codend designs with existing data from the literature to produce new results that are applied to predict the size sele

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11

O'Neill, F. G., and B. Herrmann. "PRESEMO—a predictive model of codend selectivity—a tool for fishery managers." ICES Journal of Marine Science 64, no. 8 (2007): 1558–68. http://dx.doi.org/10.1093/icesjms/fsm101.

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Abstract O'Neill, F. G., and Herrmann, B. 2007. PRESEMO—a predictive model of codend selectivity—a tool for fishery managers. – ICES Journal of Marine Science, 64: 1558–1568. The codend selectivity simulation model PRESEMO is a predictive model based on an understanding of the physical, biological, and behavioural mechanisms that underpin codend selection. In this paper, PRESEMO is used to predict the selectivity of a large range of codends of varying design. In particular, the selectivity of codends with mesh sizes in the range 80–160 mm, number of meshes around in the range 60–140, and netti

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Kholis, Muhammad Natsir, Sulaeman Martasuganda, Mohd Yusuf Amrullah, and Jaliadi Jaliadi. "Estimation of gillnet selectivity for Tor tambra captured in Lirik River, Merangin Regency, Jambi Province." Tomini Journal of Aquatic Science 1, no. 1 (2020): 29–35. http://dx.doi.org/10.37905/tjas.v1i1.5830.

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Fishing gear selectivity is the condition of a fishing gear that can catch fish the target of catching and escaped other fish so that selectivity has an essential role for fisheries managers who make regulations regarding the mesh size. The purpose of this study is to estimate the selectivity of gillnet fishing gear on Semah fish (Tor tambra). The method used in this research is the experimental fishing method. The results showed that the gillnet in the Lirik river has an estimated value of selectivity to Semah fish (Tor tambra) mesh size of 1.5 inches at a length of 48.59 cm and a mesh size o

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13

Feekings, Jordan, Peter Lewy, and Niels Madsen. "The effect of regulation changes and influential factors on Atlantic cod discards in the Baltic Sea demersal trawl fishery." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 4 (2013): 534–42. http://dx.doi.org/10.1139/cjfas-2012-0273.

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The proportion of Atlantic cod (Gadus morhua) discarded in the Danish Baltic Sea cod trawl fishery has been as high as 40%. This, combined with a stock that has declined dramatically over the past 30 years, has led to numerous technical regulations being introduced to reduce the capture of juveniles and thus discards. One method that has been widely adopted in the Baltic Sea has been to improve gear selectivity, subsequently allowing young individuals to escape capture. To understand the effects that changes to gear selectivity and minimum landing size have had on discard rates, as well as the

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Sampson, David B., and Robert D. Scott. "A spatial model for fishery age-selection at the population level." Canadian Journal of Fisheries and Aquatic Sciences 68, no. 6 (2011): 1077–86. http://dx.doi.org/10.1139/f2011-044.

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Different age classes do not generally experience the same rates of fishing mortality. The processes resulting in age- (or length-) selection operate at several scales. At the broadest scale, population-selection measures the age-specific probability of capture, while at the finest scale contact-selection describes the vulnerability of fish that encounter the fishing gear. Population-selectivity is the process most relevant to fish population dynamics and stock assessment, but it has received far less attention than processes operating at gear-specific scales. Despite wide recognition of the d

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15

Saberin, IS, MS Reza, NJ Ayon, and M. Kamal. "Estimation of size selectivity of fish species caught by different gears in the old Brahmaputra River." Journal of the Bangladesh Agricultural University 11, no. 2 (2014): 359–64. http://dx.doi.org/10.3329/jbau.v11i2.19940.

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Over the last couple of decades, the old Brahmaputra River, one of the ancient river systems of Bangladesh, has fallen in verge of biodiversity changes affecting its range of fauna and flora. Study was, therefore, conducted to investigate the selectivity of fish species caught by different fishing gears used in the old Brahmaputra River system over a period of 1 year. L50% of different gears was determined mainly for dominant species where 41 fish species were recorded. Highest L50% was recorded in gill net (fash jal) followed by basket trap (vair) whereas lowest value was recorded for seine n

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16

Msiska, O. V., G. Z. Kanyerere, S. M’balaka, et al. "Fish Composition, Size Distribution and Fishing Gear Selectivity in Lake Malombe, Malawi." European Journal of Food Science and Technology 12, no. 2 (2024): 1–20. https://doi.org/10.37745/ejfst.2013/vol12n2120.

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Lake Malombe is connected to Lake Malawi; the latter is an African Great Lake endowed with the World highest fish species diversity. Thus, fish species of the two lakes are commonly shared and form valuable food resource. The Lake Malombe fishery resources have been exploited to alarming levels by residents and mobile fishermen that use different types of fishing gears; the same has also affected parts of Lake Malawi. This study was conducted on 18 landing sites in eastern and western regions of Lake Malombe on 7-21th July 2017 to provide baseline information on performance and impact of seven

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17

Yang, Bingzhong, and Bent Herrmann. "T90 Codends Improve the Size Selectivity and Catch Efficiency of Shrimp Trawl Fisheries for Southern Velvet Shrimp (Metapenaeopsis palmensis) in the South China Sea." Sustainability 14, no. 19 (2022): 12208. http://dx.doi.org/10.3390/su141912208.

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In order to obtain gear-based management instruments of shrimp trawl fishery for southern velvet shrimp in the South China Sea (SCS), the size selectivity and catch efficiency of four codends were tested and compared. These codends included two mesh sizes, 30 and 35 mm, and two mesh shapes, T0 (diamond-mesh) and T90 (diamond-mesh turned by 90°), respectively. Our results demonstrated that increasing the mesh-sizes of the T0 codends or/and applying the T90 codends would statistically and significantly improve the size selectivity and catch efficiency. Comparing the size selectivity and catch ef

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18

Armstrong, D. W., R. S. T. Ferro, D. N. MacLennan, and S. A. Reeves. "Gear selectivity and the conservation of fish." Journal of Fish Biology 37, sa (1990): 261–62. http://dx.doi.org/10.1111/j.1095-8649.1990.tb05060.x.

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MacLennan, D. "Gear selectivity and the variation of yield." ICES Journal of Marine Science 52, no. 5 (1995): 827–36. http://dx.doi.org/10.1006/jmsc.1995.0097.

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20

Waswala-Olewe, Brian M., James Okot Okuku, and Richard Kennedy Oginga Abila. "Fishing Gear in the Sondu-Miriu River: Level of Use, Preference and Selectivity." Hydro Nepal: Journal of Water, Energy and Environment 15 (October 22, 2014): 82–86. http://dx.doi.org/10.3126/hn.v15i0.11301.

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Artisan fishers of Osodo beach of Sondu-Miriu River (Kenya) use both traditional and modern gear to catch riverine fish species. This study, conducted between August 2006 and July 2007, revealed that fishers most predominantly used gear were the seine nets (42%) and the gill nets (28%). Other used gear include long lines (14%); fish baskets (9%) and weirs (7%). The selectivity of this fishing gear varied with the developmental stages of the fish to be caught. Non-selective gear caught both targeted and non-targeted species irrespective of size and development stages. The ranking of selective t

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Mytilineou, Chryssi, Bent Herrmann, Danai Mantopoulou-Palouka, Antonello Sala, and Persefoni Megalofonou. "Modelling gear and fishers size selection for escapees, discards, and landings: a case study in Mediterranean trawl fisheries." ICES Journal of Marine Science 75, no. 5 (2018): 1693–709. http://dx.doi.org/10.1093/icesjms/fsy047.

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Abstract Gear selectivity and discards are important issues related to fisheries management but separately modelled. This work examines for the first time the overall size-selection pattern on the total amount of individuals of a species entering the trawl codend. An innovative approach was used based on modelling the escapement through the codend in the sea and the subsequently selection process by the fisher on the deck of the fishing vessel resulting into the discards and landings. Three different trawl codends and three species were investigated in the case study conducted. A dual sequenti

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Myers, R. A., and J. M. Hoenig. "Direct estimates of gear selectivity from multiple tagging experiments." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 1 (1997): 1–9. http://dx.doi.org/10.1139/f96-262.

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A new method is introduced for estimating selectivity of fishing gear from tagging data in which data from many experiments are combined. Selectivity is modeled as a multiplicative function of length and experiment effects using a generalized linear model with a log link function and a binomial error structure. We apply this method to 137 tagging experiments on Atlantic cod (Gadus morhua) conducted from 1954 to 1991. We show that the selectivity of otter trawls changed from the 1960s to the 1980s; during the earlier period the maximum probability of capture occurred at 55 cm and declined for l

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Graham, Norman, Richard S. T. Ferro, William A. Karp, and Philip MacMullen. "Fishing practice, gear design, and the ecosystem approach—three case studies demonstrating the effect of management strategy on gear selectivity and discards." ICES Journal of Marine Science 64, no. 4 (2007): 744–50. http://dx.doi.org/10.1093/icesjms/fsm059.

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Abstract Graham, N., Ferro, R. S. T., Karp, W. A., and MacMullen, P. 2007. Fishing practice, gear design, and the ecosystem approach—three case studies demonstrating the effect of management strategy on gear selectivity and discards. – ICES Journal of Marine Science, 64: 744–750. A basic tenet of the ecosystem approach to fisheries management is that harvesting is conducted with minimal impact on juvenile fish, non-target species, and marine habitats. A range of technical modifications of fishing gears aimed at improving their selective properties is available to help achieve these goals, but

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Báez, José Carlos, David Macías, Juan Antonio Camiñas, et al. "By-catch frequency and size differentiation in loggerhead turtles as a function of surface longline gear type in the western Mediterranean Sea." Journal of the Marine Biological Association of the United Kingdom 93, no. 5 (2013): 1423–27. http://dx.doi.org/10.1017/s0025315412001841.

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Fisheries by-catch is considered to be a major threat to loggerhead turtles in the Mediterranean Sea. Technical differences in both gear configurations (e.g. hook and bait type) and fisheries operations carried out by the Spanish Mediterranean surface longline fleet could have an effect on by-catch rates and size selectivity. The aim of the present study was to test the differences in by-catch per unit effort and body size of loggerhead sea turtles caught using different gear types in the Mediterranean surface longline fishery. Our results suggest that differences in the gear type used have an

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Fenton, Mairi, Claire L. Szostek, Adam Delargy, et al. "Catch yield and selectivity of a modified scallop dredge to reduce seabed impact." PLOS ONE 19, no. 5 (2024): e0302225. http://dx.doi.org/10.1371/journal.pone.0302225.

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Global scallop fisheries are economically important but are associated with environmental impacts to seabed communities resulting from the direct physical contact of the fishing gear with the seabed. Gear modifications attempting to reduce this contact must be economically feasible such that the catch numbers for the target species is maintained or increased. This study investigated the outcome of reducing seabed contact on retained catch of scallops and bycatch by the addition of skids to the bottom of the collecting bag of scallop dredges. We used a paired control experimental design to inve

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Shimizu, Susumu. "Selectivity of Fishing Gear in Coastal Fisheries II. Fook and Traps. Angling Gear." NIPPON SUISAN GAKKAISHI 64, no. 5 (1998): 888–89. http://dx.doi.org/10.2331/suisan.64.888.

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Nashimoto, Katsuaki, Takeshi Yamane, Tomonori Hiraishi, and Toshihiro Watanabe. "Selectivity of Fishing Gear in Coastal Fisheries I." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 125. http://dx.doi.org/10.2331/suisan.64.125.

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Nashimoto, Katsuaki, Satoru Inoue, Tatsuro Matsuoka, and Hiroshi Inada. "Selectivity of Fishing Gear in Coastal Fisheries II." NIPPON SUISAN GAKKAISHI 64, no. 5 (1998): 887. http://dx.doi.org/10.2331/suisan.64.887.

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Salas-Maldonado, Mauricio, Elaine Espino-Barr, Emigdio Marín-Enríquez, Alberto Bartoleño-Sánchez, and Leonardo Daniel Valdez-Carrazco. "Size selectivity and optimal soaking time of hoops and traps targeting the blue swimming crab Callinectes arcuatus in Cuyutlan Lagoon, Mexico." Revista de Biología Marina y Oceanografía 56, no. 1 (2021): 42. http://dx.doi.org/10.22370/rbmo.2021.56.1.2797.

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The selectivity of two types of commercial fishing gear (crab hoop/traditional gear and rigid rectangular cage traps) targeting blue crabs (Callinectes arcuatus) in Cuyutlan Lagoon, Mexico, was assessed. The effect of soak time on crab catches versus the retention and escape rate of organisms was also evaluated. Results suggested that traps captured larger individuals than hoops. The carapace width of crabs was significantly different between the fishing gears used: 63.9% of crabs caught with hoops were < 95 mm (sizes ranged from 40 to 113 mm) and 40.7% of crabs caught with traps were <

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Methven, David A., and David C. Schneider. "Gear-independent patterns of variation in catch of juvenile Atlantic cod (Gadus morhua) in coastal habitats." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 6 (1998): 1430–42. http://dx.doi.org/10.1139/f98-025.

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Habitat and size of juvenile Atlantic cod (Gadus morhua) change substantially during the first 3 years after settlement, and hence, cohort size cannot be followed using a single gear. We investigated whether catch could be calibrated across gear types by deploying pairs of gears repeatedly in the same habitat. As expected, size selectivity differed substantially among gears. Trawls and seines generally collected individuals <200 mm. Gillnets and jiggers collected individuals >150 mm. Size modes, corresponding to age-classes, were common to catches of most gears. Highest catches were take

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He, Pingguo. "Gillnets: Gear Design, Fishing Performance and Conservation Challenges." Marine Technology Society Journal 40, no. 3 (2006): 12–19. http://dx.doi.org/10.4031/002533206787353187.

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Worldwide, the gillnet is one of the most important fishing gears for harvesting a variety of species in the sea and in freshwater. Gillnets are efficient, catching a diverse range of species, and are highly size selective. However, gillnets have limited species selectivity and sometimes catch non-target species; birds; and megafauna species including cetaceans, turtles, and sharks. Lost gillnets often continue to fish, a situation called “ghostfishing”, wasting valuable resources. This paper describes basic components of a gillnet and its fishing mechanisms, and reviews catch efficiency, sele

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Özbilgin, H., and C. W. Glass. "Role of learning in mesh penetration behaviour of haddock (Melanogrammus aeglefinus)." ICES Journal of Marine Science 61, no. 7 (2004): 1190–94. http://dx.doi.org/10.1016/j.icesjms.2004.07.001.

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Abstract If fish that have passed through the meshes of a fishing net are capable of escaping more easily on subsequent encounters, there may be important implications for the efficiency and selectivity of fishing gears in heavily fished populations. Here we report on the effect of learning on mesh penetration of haddock (Melanogrammus aeglefinus) under laboratory conditions. Ten haddock were trained using a classical conditioning procedure (with food) to race between two alternately flashing light emitting diodes (LEDs) positioned at the ends of a 6-m-long oval swimming pool. Once the fish we

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Branch, Trevor A. "Differences in predicted catch composition between two widely used catch equation formulations." Canadian Journal of Fisheries and Aquatic Sciences 66, no. 1 (2009): 126–32. http://dx.doi.org/10.1139/f08-196.

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Fishing gear selectivity varies among different types of fish (e.g., species, age, sex, or length groups), but their relative catch composition also depends on the fishing process. The continuous (Baranov) formulation assumes that fishing mortality and natural mortality occur together during the fishing season and that there are multiple encounters between fish and fishing gear. For this formulation, predicted catch composition depends on fishing mortality, and at high fishing mortality levels the entire population can be caught provided the selectivity is nonzero for all age groups. In contra

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Carvalho, Felipe, Robert Ahrens, Debra Murie, et al. "Using pop-up satellite archival tags to inform selectivity in fisheries stock assessment models: a case study for the blue shark in the South Atlantic Ocean." ICES Journal of Marine Science 72, no. 6 (2015): 1715–30. http://dx.doi.org/10.1093/icesjms/fsv026.

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Abstract Selectivity has traditionally been well estimated internally in stock assessment models when length or age composition data are available. However, in stock assessment, temporal or spatial variation in fishery or stock structure can lead to misspecification of the selectivity pattern, which can contribute substantially to the uncertainty in stock assessment results. Consequently, generating auxiliary information to help stock assessment scientists avoid unrealistic specifications of selectivity patterns should be encouraged. Here, we combine data from pop-up satellite archival tags (P

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Eighani, Morteza, Seyed Yousef Paighambari, and Shannon M. Bayse. "Comparing handline and trolling fishing methods in the recreational pelagic fishery in the Gulf of Oman." Scientia Marina 83, no. 3 (2019): 215. http://dx.doi.org/10.3989/scimar.04864.10a.

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The choice of fishing gear and catching strategy should be taken into consideration in the management of fish stocks. Here, paired fishing trials in a pelagic recreational fishery compared the catch composition, catch rate and size selectivity between handline and trolling fishing methods in Iranian coastal waters of the Gulf of Oman. Total catch rate was 1.06 fish hr–1 vs 0.88 fish hr–1 for handline and trolling, respectively, a 17% difference which was significant (p < 0.05). Generally, the handline method captured more fish than trolling for most species, but size selectivity tended to b

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Sistiaga, Manu, Bent Herrmann, Eduardo Grimaldo, and Finbarr G. O’Neill. "Estimating the selectivity of unpaired trawl data: a case study with a pelagic gear." Scientia Marina 80, no. 3 (2016): 321–27. http://dx.doi.org/10.3989/scimar.04409.26b.

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Larsen, Roger B., Bent Herrmann, Manu Sistiaga, et al. "Effect of the Nordmøre grid bar spacing on size selectivity, catch efficiency and bycatch of the Barents Sea Northern shrimp fishery." PLOS ONE 17, no. 12 (2022): e0277788. http://dx.doi.org/10.1371/journal.pone.0277788.

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The introduction of the Nordmøre grid in shrimp trawls has reduced the bycatch of non-target species. In the Norwegian Northern shrimp (Pandalus borealis) fishery, the mandatory selective gear consists of a Nordmøre grid with 19 mm bar spacing combined with a 35 mm mesh size diamond mesh codend. However, fish bycatch in shrimp trawls remains a challenge and further modifications of the gear that can improve selectivity are still sought. Therefore, this study estimated and compared the size selectivity of Nordmøre grids with bar spacings of 17 and 21 mm. Further, the effect of applying these tw

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Lewy, Peter, J. Rasmus Nielsen, and Holger Hovgård. "Survey gear calibration independent of spatial fish distribution." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 4 (2004): 636–47. http://dx.doi.org/10.1139/f04-034.

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Trawl surveys provide important information for evaluation of relative stock abundance fluctuations over time. Therefore, when survey gears or vessels are changed, it is important to compare the efficiency and selectivity of old and new gears and vessels. A method for estimation of conversion factors is developed based on a survey design where paired hauls are taken in the same trawl track line. The method explicitly accounts for changes in fish density caused by trawling disturbance. A generalized linear model for paired hauls catches is analytically derived and the gear conversion and distur

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Matsuoka, Tatsuro, and Sulaeman Martasuganda. "Selectivity of Fishing Gear in Coastal Fisheries I. Gillnet." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 126–27. http://dx.doi.org/10.2331/suisan.64.126.

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Matsushita, Yoshiki. "Selectivity of Fishing Gear in Coastal Fisheries I. Trawl." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 130–31. http://dx.doi.org/10.2331/suisan.64.130.

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Sistiaga, M., B. Herrmann, and R. B. Larsen. "Investigation of the paired-gear method in selectivity studies." Fisheries Research 97, no. 3 (2009): 196–205. http://dx.doi.org/10.1016/j.fishres.2009.02.002.

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Watson, J. W., and D. W. Kerstetter. "Pelagic Longline Fishing Gear: A Brief History and Review of Research Efforts to Improve Selectivity." Marine Technology Society Journal 40, no. 3 (2006): 6–11. http://dx.doi.org/10.4031/002533206787353259.

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Pelagic longline gear had several independent evolutions, but the most widespread form appears to have been originally developed by the Japanese as early as the mid-19th century. Technological developments such as polyamide monofilament line and modern fishing vessel construction have resulted in the evolution and expansion of this gear type as the primary worldwide method of commercially harvesting large pelagic fishes such as broadbill swordfish and tunas. Although the adaptability of the gear through changes in materials, lengths, and deployment strategies has resulted in generally high sel

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Noack, Thomas, Niels Madsen, Bernd Mieske, Rikke P. Frandsen, Kai Wieland, and Ludvig A. Krag. "Estimating escapement of fish and invertebrates in a Danish anchor seine." ICES Journal of Marine Science 74, no. 9 (2017): 2480–88. http://dx.doi.org/10.1093/icesjms/fsx066.

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Abstract The codend is generally presumed to be the place where the main selectivity of fish occurs in towed fishing gears, but other parts of the net have been found to contribute to the selectivity process of several invertebrate species. This means that conventional selectivity or survival studies may ignore the selectivity of net parts other than the codend for certain species. By attaching 12 small meshed collecting bags to different parts of a Danish anchor seine net and conducting normal commercial fishing activities, this study showed that there is a substantial escapement of fish and

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Erick Nugraha, Achmad Iqbal, Maman Hermawan, et al. "Purse seine selectivity on small pelagic fish catches in Bangka Belitung Waters, Indonesia." International Journal of Science and Research Archive 16, no. 1 (2025): 193–203. https://doi.org/10.30574/ijsra.2025.16.1.1998.

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Purse seine is the most widely used fishing gear by fishermen in Bangka Belitung. The fish caught in Bangka Belitung are of several types and sizes, namely Yellowstripe scad (Selaroides leptolepis), Yellowtail scad (Atule mate), Fringescale sardinella (Sardinella fimbriata) and others. This is because most ships still use mesh sizes that do not meet the requirements. Therefore, selective fishing gear should be selected to obtain the target of catching fish types and sizes that are suitable for catching and to minimize unwanted bycatch. This study is expected to provide information related to t

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Jaya, Made Mahendra, Liya Tri Khikmawati, Rakhma Fitria Larasati, and Bagus Sudananjaya. "ASSESSMENT OF THE FISHING TECHNIQUES IN BALI SARDINELLA FISHERY IN PENGAMBENGAN FISHING PORT, BALI, INDONESIA." Jurnal Teknologi Perikanan dan Kelautan 16, no. 2 (2025): 101–11. https://doi.org/10.24319/jtpk.16.101-111.

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Fisheries management with an ecosystem approach is essential to implement. This approach aims to achieve sustainability and balance in socio-economic, ecological, and more effective fisheries governance dimensions. The aspect assessed in this study was fishing techniques. The assessment was divided into six indicators: fishing methods, fishing capacity, selectivity of fishing gear, modification of fishing gear, suitability of fishing boat size and function, and certified fishing boat crew. This study aims to assess the status of Bali sardinella fishery resources in Bali Strait Waters, especial

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Peixer, J., and M. Petrere Jr. "Hook selectivity of the pacu Piaractus mesopotamicus (Holmberg, 1887) in the Pantanal, the state of Mato Grosso do Sul, Brazil." Brazilian Journal of Biology 67, no. 2 (2007): 339–45. http://dx.doi.org/10.1590/s1519-69842007000200021.

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The Pacu Piaractus mesopotamicus is the most captured fish species in the Pantanal, Mato Grosso do Sul State, and since 1994, its maximum sustainable yield had already been exceeded. Its capture is carried out only by hooks, as mesh gears are forbidden either for professional or for recreational fishing. The aim of this study was to determine selectivity for different hook sizes used in P. mesopotamicus fishing and to verify which sizes capture only adults. Data were collected in the rivers Miranda, Aquidauana, and Vermelho, in January, March, and April 2002. Six longlines with eight hook size

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Sukimin, Ridwan, Danial Danial, and Abdul Rauf. "Study of Several Aspects of Fishery for Guiding Barrier Fishing Gear in The Coastal Town Palopo." Jurnal Biologi Tropis 21, no. 2 (2021): 564–75. http://dx.doi.org/10.29303/jbt.v21i2.2743.

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Fishing is a profession that has long been carried out by humans and is estimated to have been thousands of years old. Sero is one of the many types of fishing gear that is often operated by coastal fishermen, especially in the Palopo City area. Fish, crabs, squids, lobsters, turtles and even estuarine crocodiles are just a few examples of variations in the types of marine life that can be trapped in sero fishing gear. Along with the growth of human population and advances in fishing technology, the level of exploitation is increasing. On the other hand, the carrying capacity of the environmen

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Nagamatsu, Kimiaki. "Selectivity of Fishing Gear in Coastal Fisheries I. Trammel net." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 128–29. http://dx.doi.org/10.2331/suisan.64.128.

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Inoue, Satoru. "Selectivity of Fishing Gear in Coastal Fisheries I. Danish Seine." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 132–33. http://dx.doi.org/10.2331/suisan.64.132.

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Inada, Hiroshi. "Selectivity of Fishing Gear in Coastal Fisheries I. Purse Seine." NIPPON SUISAN GAKKAISHI 64, no. 1 (1998): 134–35. http://dx.doi.org/10.2331/suisan.64.134.

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