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Journal articles on the topic 'Catch per unit effort'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Petrere Jr., M., HC Giacomini, and P. De Marco Jr. "Catch-per-unit-effort: which estimator is best?" Brazilian Journal of Biology 70, no. 3 (2010): 483–91. http://dx.doi.org/10.1590/s1519-69842010005000010.

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In this paper we examine the accuracy and precision of three indices of catch-per-unit-effort (CPUE). We carried out simulations, generating catch data according to six probability distributions (normal, Poisson, lognormal, gamma, delta and negative binomial), three variance structures (constant, proportional to effort and proportional to the squared effort) and their magnitudes (tail weight). The Jackknife approach of the index is recommended, whenever catch is proportional to effort or even under small deviations from proportionality assumption, when a ratio estimator is to be applied and li

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2

Harley, Shelton J., Ransom A. Myers, and Alistair Dunn. "Is catch-per-unit-effort proportional to abundance?" Canadian Journal of Fisheries and Aquatic Sciences 58, no. 9 (2001): 1760–72. http://dx.doi.org/10.1139/f01-112.

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We compiled 297 series of catch-per-unit-effort (CPUE) and independent abundance data (as estimated by research trawl surveys) and used observation error and random effects models to test the hypothesis that CPUE is proportional to true abundance. We used a power curve, for which we were interested in the shape parameter (β). There was little difference among species, ages, or gear types in the distributions of the raw estimates of β for each CPUE series. We examined three groups: cod, flatfish, and gadiformes, finding strong evidence that CPUE was most likely to remain high while abundance de

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3

Alexander, T. J., P. Vonlanthen, G. Periat, F. Degiorgi, J. C. Raymond, and O. Seehausen. "Estimating whole-lake fish catch per unit effort." Fisheries Research 172 (December 2015): 287–302. http://dx.doi.org/10.1016/j.fishres.2015.07.024.

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4

LIMA, Álvaro Carvalho de, Carlos Edwar de Carvalho FREITAS, Maria Aparecida Pion ABUABARA, Miguel PETRERE Jr, and Vandick da Silva BATISTA. "On the standardization of the fishing effort." Acta Amazonica 30, no. 1 (2000): 167. http://dx.doi.org/10.1590/1809-43922000301169.

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In this note we demonstrate that the use of an index to standardize the fishing effort using the cpue of a standard vessel or gear is mistaken, once the cpues- catch per unit of total effort after standardization is similar to cpues - catch per unit of effort of the standard vesel or gear arbitrarily chosen.

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Nugraha, Budi, and Enjah Rahmat. "STATUS PERIKANAN HUHATE (POLE AND LINE) DI BITUNG, SULAWESI UTARA." Jurnal Penelitian Perikanan Indonesia 14, no. 3 (2017): 313. http://dx.doi.org/10.15578/jppi.14.3.2008.313-320.

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Tulisan ini menyajikan tentang status perikanan huhate di Bitung meliputi deskripsi unit penangkapan, daerah penangkapan, komposisi hasil tangkapan, catch per unit of effort, dan ukuran ikan pertama kali tertangkap. Data dikumpulkan selama tahun 2004 sampai dengan 2005. Hasil penelitian menunjukkan bahwa huhate yang terdapat di Bitung dioperasikan dengan kapal penangkapan yang terbuat dari kayu berukuran 50 sampai dengan 80 GT. Daerah penangkapan di sekitar lokasi rumpon di Laut Sulawesi dan Laut Maluku. Hasil tangkapan yang diperoleh terdiri atas cakalang (Katsuwonus pelamis), madidihang (Thu

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Sadiyah, Lilis, Natalie Dowling, and Budi Iskandar Prisantoso. "CHANGES IN FISHING PATTERN FROM SURFACE TO DEEP LONGLINE FISHING BY THE INDONESIAN VESSELS OPERATING IN THE INDIAN OCEAN." Indonesian Fisheries Research Journal 17, no. 2 (2017): 87. http://dx.doi.org/10.15578/ifrj.17.2.2011.87-99.

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(P.T. Perikanan Samodra Besar) data are a valuable source, since they are the longest time series of catch and effort data available from the fishery. This paper aimed to interpret the spatial and temporal catch and effort trends to the extent possible and to reconcile apparent changes in targeting practices against the actual catch. Catch and effort data collected by P.T. Perikanan Samodra Besar from its Benoa-based longliners during 1978-1995 were summed to obtain annual catch, effort, and catch per unit of effort trends. To generate spatial distributions of catch and effort, catch and effor

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7

Akkuş, Mustafa, Adem Sezai Bozaoğlu, and Ahmet Raif Eryaşar. "Selectivity of monofilament gillnets with different mesh sizes used in fishing of pearl mullet, (Alburnus tarichi (Güldenstädt, 1814)) in Lake Van." Ege Journal of Fisheries and Aquatic Sciences 40, no. 1 (2023): 56–61. http://dx.doi.org/10.12714/egejfas.40.1.08.

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This study was carried out between September 2020 and March 2021 to determine the selectivity of monofilament gillnets used in pearl mullet, Alburnus tarichi (Güldenstädt, 1814), fishing in Lake Van. The SELECT method was applied to determine the selectivity. The best model for the selectivity of monofilament gillnets used in pearl mullet fishing was determined as the log-normal model. The optimum catch lengths of monofilament gillnets with 20, 22 and 24 mm mesh sizes were calculated as 21.69 cm, 23.84 cm and 26.01 cm, respectively. Catch per unit effort was determined as 10.03 kg/90 m/day at

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Kershner, Mark W., and Elizabeth A. Marschall. "Allocating Sampling Effort to Equalize Precision of Electrofishing Catch per Unit Effort." North American Journal of Fisheries Management 18, no. 4 (1998): 822–31. http://dx.doi.org/10.1577/1548-8675(1998)018<0822:asetep>2.0.co;2.

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9

Okamura, Hiroshi, Shoko H. Morita, Tetsuichiro Funamoto, Momoko Ichinokawa, and Shinto Eguchi. "Target-based catch-per-unit-effort standardization in multispecies fisheries." Canadian Journal of Fisheries and Aquatic Sciences 75, no. 3 (2018): 452–63. http://dx.doi.org/10.1139/cjfas-2016-0460.

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Standardized catch per unit effort (CPUE) is a fundamental component of fishery stock assessment. In multispecies fisheries, catchability can differ depending on which species is being targeted, and so the yearly trend extracted from the standardized CPUE is likely to be biased. We have, therefore, developed a method for predicting the unobserved variable related to targeted species from among multispecies composition data using a mixture regression model for the transformed residuals. In contrast with traditional methods, the proposed method predicts the target variable in CPUE standardizatio

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Flores, Pia Amabelle, Rowell Nitafan, John Rey Agustin, and Jonald Pimentel. "Fish catch assessment of the nine fish species at Ligawasan Marsh, North Cotabato, Philippines." Journal of Agriculural Research, Development, Extension and Technology 2024, no. 6 (2024): 63–79. https://doi.org/10.5281/zenodo.15037200.

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Farmers’ nine important fishes were assessed to determine relative abundance from data of fish catch landings and catch per unit effort (CPUE) in Ligawasan marsh from January to March 2022. The study gathered data from total fish catch landings, gear selectivity, catch per unit effort (CPUE) and length-weight relationship from fish catch landings. Results of the study showed that mudfish (<em>Channa striata</em>), tilapia (<em>Oreochromis niloticus</em>), and common carp (<em>Cyprinus carpio</em>) were the abundant species in the marsh. Gear selectivity was observed in some species.

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Flores, Pia Amabelle, Rowell Nitafan, John Rey Agustin, and Jonald Pimentel. "Fish catch assessment of the nine fish species at Ligawasan marsh, North Cotabato, Philippines." Journal of Agriculural Research, Development, Extension and Technology 6, no. 1 (2024): 63–79. https://doi.org/10.5281/zenodo.15087087.

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Farmers’ nine important fishes were assessed to determine relative abundance from data of fish catch landings and catch per unit effort (CPUE) in Ligawasan marsh from January to March 2022. The study gathered data from total fish catch landings, gear selectivity, catch per unit effort (CPUE) and length-weight relationship from fish catch landings. Results of the study showed that mudfish (<em>Channa striata</em>), tilapia (<em>Oreochromis niloticus</em>), and common carp (<em>Cyprinus carpio</em>) were the abundant species in the marsh. Gear selectivity was observed in some species. Leng

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Flores, Pia Amabelle, Rowell Nitafan, John Rey Agustin, and Jonald Pimentel. "Fish catch assessment of the nine fish species at Ligawasan marsh, North Cotabato, Philippines." Journal of Agriculural Research, Development, Extension and Technology 6, no. 1 (2024): 63–79. https://doi.org/10.5281/zenodo.15099369.

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Farmers’ nine important fishes were assessed to determine relative abundance from data of fish catch landings and catch per unit effort (CPUE) in Ligawasan marsh from January to March 2022. The study gathered data from total fish catch landings, gear selectivity, catch per unit effort (CPUE) and length-weight relationship from fish catch landings. Results of the study showed that mudfish (<em>Channa striata</em>), tilapia (<em>Oreochromis niloticus</em>), and common carp (<em>Cyprinus carpio</em>) were the abundant species in the marsh. Gear selectivity was observed in some species. Leng

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Farrag, Elsayed, Subbiah Carter Carter, and Mustafa Al-Shaer. "An Investigation of Catch and Species Compositions Caught by Fishing Gears in The United Arab Emirates." Indiana Journal of Agriculture and Life Sciences 4, no. 5 (2024): 12–17. https://doi.org/10.5281/zenodo.13883662.

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The current research aimed to determine the catch composition of the fishing gears operated in the coastal area of the United Arab Emirates during the period from January to December 2022 with total of 3035 fishing trip. Catch composition, fishing gear and species composition of each fishing trip was investigated. The result showed the dominant species in term of biomass is Lethrinus lentjan and constitute 12.0% of the total catch, followed by Lethrinus nebulosus and Epinephelus coioides (11.56% and 8.52% respectively). A total of 58 fish species from 30 families were recorded in the catches o

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Darmawan, Regi, Budy Wiryawan, Sonja Kleinertz, Ari Purbayanto, and Irfan Yulianto. "PEMETAAN SPASIAL DAN TEMPORAL STATUS PEMANFAATAN IKAN KERAPU DI PERAIRAN TELUK SALEH, NUSA TENGGARA BARAT." Marine Fisheries : Journal of Marine Fisheries Technology and Management 13, no. 2 (2022): 195–205. http://dx.doi.org/10.29244/jmf.v13i2.41239.

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The Saleh Bay is one of the bays in West Nusa Tenggara utilized as the grouper fishing ground. However, in the previous spawning potential ratio study, some grouper species have been overexploited in Saleh Bay. This study aimed to estimate the status of grouper utilization with a catch per unit effort (CPUE) approach and the spatio-temporal fishing intensity of grouper in fishing grounds in Saleh Bay. Data were gathered using the fish landing data and geo-reference of fishing ground grouper in Saleh Bay. This study used several methods: descriptive analysis, catch per unit effort, and spatial-

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15

Mangi, Halima O., Simon M. Onywere, and Esther C. Kitur. "Fish Productivity Response to Water Quality Variations: A Case Study of Nyumba ya Mungu Dam, in Pangani Water Basin, Tanzania." International Journal of Ecology 2023 (July 24, 2023): 1–11. http://dx.doi.org/10.1155/2023/7353898.

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Fish habitat degradation, such as water pollution due to the rapid expansion of incompatible land uses, is one of the noteworthy challenges to freshwater ecosystems. Elevated contents of nutrients and contaminants in water are some of the imperative challenges. This research was conducted to investigate the link between water qualities and fish productivity in the Nyumba ya Mungu Dam, whose fishery potential had decreased by 95% between 1972 and 2018. Physicοchemical characteristics, namely, temperature, pH, dissolved oxygen (DO), turbidity, total nitrogen, total phosphorus, chlorophyll a, and

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16

Goodyear, C. Phillip. "Spatio-temporal distribution of longline catch per unit effort, sea surface temperature and Atlantic marlin." Marine and Freshwater Research 54, no. 4 (2003): 409. http://dx.doi.org/10.1071/mf01255.

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Atlantic blue and white marlin are currently overfished, primarily as a result of bycatch in pelagic longlines directed at other species. One possible management measure to reduce fishing mortality on these species would be to restrict fishing effort in times and places with exceptionally high marlin catch per unit effort (CPUE). The International Commission for the Conservation of Atlantic Tunas maintains a database of catch and catch-effort statistics of participating nations. These data were analysed to determine whether the distribution of CPUE is sufficiently heterogeneous in time and spa

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17

Bentley, Nokome, Terese H. Kendrick, Paul J. Starr, and Paul A. Breen. "Influence plots and metrics: tools for better understanding fisheries catch-per-unit-effort standardizations." ICES Journal of Marine Science 69, no. 1 (2011): 84–88. http://dx.doi.org/10.1093/icesjms/fsr174.

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Abstract Bentley, N., Kendrick, T. H., Starr, P. J., and Breen, P. A. 2012. Influence plots and metrics: tools for better understanding fisheries catch-per-unit-effort standardizations. – ICES Journal of Marine Science, 69: 84–88. Standardization of catch per unit effort using generalized linear models (GLMs) is a common procedure that attempts to remove the confounding effects of variables other than abundance. Simple plots and metrics are described to assist understanding the standardization effects of explanatory variables included in GLMs, illustrated with an example based on New Zealand t

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Hinton, Michael G. "Status of swordfish stocks in the eastern Pacific Ocean estimated using data from Japanese tuna longline fisheries." Marine and Freshwater Research 54, no. 4 (2003): 393. http://dx.doi.org/10.1071/mf01278.

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Swordfish (Xiphias gladius) are harvested in target and non-target fisheries throughout the eastern Pacific Ocean (east of 150°W). Analyses of trends in catch rates (catch per unit effort) standardized using general linear models indicate that there are two stocks in the eastern Pacific Ocean that have a north–south boundary at 5°S latitude; this is in striking contrast to the 10°N boundary that has generally been assumed by previous studies. Trends in standardized catch per unit effort have held relatively level for the north stock and have been increasing for the south stock. Considering the

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Ryan, P. M., and J. J. Kerekes. "Correction of Relative Fish Abundance Estimates from Catch Data for Variable Fishing Intensity during Lake Surveys." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 6 (1989): 1022–25. http://dx.doi.org/10.1139/f89-132.

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Six small Newfoundland lakes were fished with gillnets over a 3–6 yr period in a manner typical of standard lake surveys where surveyors have a fixed amount of gear available, but lake size varies. Catch and effort data for brook trout (Salvelinus fontinalis) were examined for the purpose of selecting an appropriate measure of the relative abundance of trout. Fishing effort was not a function of lake area but fishing intensity or fishing effort per unit area varied inversely with lake area. Brook trout yield (kilograms per hectare) was positively related to fishing intensity Catch per unit eff

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20

Quinn II, Terrance J. "Catch-Per-Unit-Effort: A Statistical Model for Pacific Halibut (Hippoglossus stenolepis)." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 8 (1985): 1423–29. http://dx.doi.org/10.1139/f85-178.

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The empirical distributions of catch-per-unit-effort (CPUE) of Pacific halibut (Hippoglossus stenolepis) were positively skewed and could be modeled by a general family of distributions involving power transformations. The root normal distribution, a special case from the family, was found to be a convenient model for the data. Measures of the central tendency and variance of the distribution were derived. Estimators of the central tendency based on increasing variance of a function of catch as a function of effort were most appropriate for the data. A median-based estimator performed better t

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Dereli, Hakkı, Zafer Tosunoğlu, Huriye Göncüoğlu, and Vahdet Ünal. "Catch per unit effort (CPUE) and catch composition of small scale fisheries in Gökova Bay." Ege Journal of Fisheries and Aquatic Sciences 32, no. 3 (2015): 135–43. http://dx.doi.org/10.12714/egejfas.2015.32.3.03.

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Triharyuni, Setiya, Aisyah Aisyah, Chairulwan Umar, and Husnah Husnah. "POTENTIALS YIELD AND FISHERIES OF MALAHAYU RESERVOIR, BREBES." Indonesian Fisheries Research Journal 25, no. 1 (2019): 11. http://dx.doi.org/10.15578/ifrj.25.1.2019.11-17.

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Fishing activity in Malahayu Reservoir has been done since long time. Unlimited fishing may impact to the decresing of fish resources of those waters. This study presents an assessment of fishing practices in Malahayu reservoir between 2008-2016 periods. Data of potential fish production and catch per unit effort were estimated by using different estimate models, catch per unit effort was analyzed annually, while potential fish production was analyzed by using five models namely model by Henderson & Welcome (1974), Teows & Griffith (1979), Marshal (1984), Moreau & De Silva (1991) a

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Vito, Margie P., and Anthony S. Ilano. "Catch Per Unit Effort (CPUE) of Bivalves in Northwestern Bohol, Philippines." International journal of Rural Development, Environment and Health Research 3, no. 3 (2019): 110–12. http://dx.doi.org/10.22161/ijreh.3.3.5.

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Pereira, Júlio César, Roseli Aparecida Leandro, Miguel Petrere, and Tom Nishida. "Comparing three indices of catch per unit effort using Bayesian geostatistics." Fisheries Research 100, no. 3 (2009): 200–209. http://dx.doi.org/10.1016/j.fishres.2009.07.010.

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Ludwig, Donald, and Carl J. Walters. "Are Age-Structured Models Appropriate for Catch-Effort Data?" Canadian Journal of Fisheries and Aquatic Sciences 42, no. 6 (1985): 1066–72. http://dx.doi.org/10.1139/f85-132.

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Simulated data have been used to evaluate the performance of schemes for estimating optimum fishing effort using a simple stock-production model and R. B. Deriso's age-structured model Even when the data are generated using Deriso's model, the simpler production model generally gives as good or better estimates for the optimal effort. The only exception to this result is when data are provided with unrealistically large contrasts in effort and catch per unit effort over time. The implication of these findings is that simple production models should often be used in stock assessments based on c

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Overholtz, William J., Steven F. Edwards, and Jon K. T. Brodziak. "Effort control in the New England groundfish fishery: a bioeconomic perspective." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 9 (1995): 1944–57. http://dx.doi.org/10.1139/f95-786.

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A multispecies model of the New England fishery was developed to investigate selected biological and economic implications of effort control on groundfish. Performance measures, such as catch, spawning stock biomass, and catch per unit effort, as well as harvest revenue and consumer surplus were used to compare and contrast different levels of effort. Results suggest that significant gains in biological and economic benefits are possible, but major reductions in effort and some short-term losses in catch would be required. Large increases in catch per unit effort on the order of 3–5 times curr

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PAIGHAMBARI, SEYED YOUSEF, and MORTEZA EIGHANI. "Seasonal variation of catch per unit effort and catch composition in a Persian Gulf longline fishery." Biodiversitas Journal of Biological Diversity 19, no. 3 (2018): 888–92. http://dx.doi.org/10.13057/biodiv/d190317.

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Paighambari SY, Eighani M. 2018. Seasonal variation of catch per unit effort and catch composition in a Persian Gulf longline fishery. Biodiversitas 19: 888-892. The catch per unit effort (CPUE), and catch composition of a Persian Gulf longline fishery were investigated during the study to develop essential information regarding the needs of longline fishing in Persian Gulf just to assist the artisanal fishermen. A total number of 2990 deployed hooks were set during spring and winter seasons. One catch contained 8 teleost fish and one elasmobranch species belonging to 8 families. In the spring

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Soykan, Ozan, Cemil Sağlam, İlker Aydın, and Hasan Tuncay Kınacıgil. "Effect of hook and bait type on catch per unit effort in the Aegean Sea demersal longline fishery." Ege Journal of Fisheries and Aquatic Sciences 38, no. 2 (2021): 181–88. http://dx.doi.org/10.12714/egejfas.38.2.07.

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This study aimed to determine the impact of hook and bait type on the catch composition and catch per unit effort. Effects of hook and bait types on catch composition, catch per unit effort (CPUE), length and weight distributions in demersal longline fishery were determined by experimental surveys on demersal longline sets in the Aegean Sea. A total of 12 samplings corresponding to 4800 hook fishing effort were performed between April 2014 and September 2014. Two bait types; sardine (Sardina pilchardus) and grooved razor shell (Solen marginatus) and two hook types; J-hook and C-hook were teste

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de la Mare, William K. "Estimating relative abundance of whales from historical Antarctic whaling records." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 1 (2014): 106–19. http://dx.doi.org/10.1139/cjfas-2013-0016.

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Catch per unit effort (CPUE) is often the only data available from historical fisheries for inferring distribution and abundance of exploited populations. CPUE underestimates variations in relative abundance when gross effort data are only measured in total operating days. Gross effort includes both searching time and handling time, but only searching time is useful for an index of abundance. A method is developed for estimating searching time by subtracting a maximum likelihood estimate of handling time from the gross effort. An expectation maximization (E-M) algorithm is used to combine maxi

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Jayanta, Kumar Biswas, and Ghosh Dipankar. "Fish productivity: Assessing sustainability in a tropical oxbow lake of Nadia district, West Bengal, India." Archives of Agriculture and Environmental Science 2, no. 1 (2017): 6–20. https://doi.org/10.5281/zenodo.556357.

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Fish productivity in oxbow lake is impacted severely due to varied unsustainable anthropogenic practices like over exploitation, indiscriminate use of fine meshed fishing gears, jute retting etc. This particular study was conducted in a semi closed oxbow lake ecosystem in eastern India to assess both the present and sustainable fish productivity based on the data collected through direct catch assessment survey, fishing effort survey and catch per unit effort calculation. Hike in relative abundance values like numbers of fish catch (>3.78 times), catch per gear effort (>2.6 times), fish

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Aljafary, M., D. M. Gillis, and P. Comeau. "Is catch proportional to nominal effort? Conceptual, fleet dynamic, and statistical considerations in catch standardization." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 12 (2019): 2332–42. http://dx.doi.org/10.1139/cjfas-2018-0303.

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Often, catch-per-unit-effort (CPUE) standardizations are used to reflect fish abundance. This implies that catch is directly proportional to effort. We examine this using 78 reported catch and effort series in a meta-analysis, correcting for errors-in-variables in the relationship. Though proportionality in the apparent relationship is the average, there is significant variation among fisheries. We then examine the Scotian Shelf haddock (Melanogrammus aeglefinus) fishery in detail. We used a generalized linear mixed model (GLMM) predicting catch-per-set, accounting for annual and within-year v

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Schulte, Katharina Friederike, Andreas Dänhardt, Marc Hufnagl, Volker Siegel, Werner Wosniok, and Axel Temming. "Not easy to catch: multiple covariates influence catch rates of brown shrimp (Crangon crangon L.), potentially affecting inferences drawn from catch and landings data." ICES Journal of Marine Science 75, no. 4 (2018): 1318–28. http://dx.doi.org/10.1093/icesjms/fsx203.

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Abstract Brown shrimps (Crangon crangon) occur in high densities in the southern North Sea and support a large, but so far unmanaged fishery with &gt;500 vessels. Cohort-based stock assessment is not possible, and catch per unit effort from scientific surveys and commercial landings are the only variables collected. Landings per unit effort are currently used to approximate the state of stock and to trigger catch restrictions, but, although decisive in interpreting unit catches or landings, factors affecting catch rates are rarely understood. Using data from two long-term (1997–2010) scien

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Mulazzani, Luca, Rosa Manrique, Giovanna Trevisan, Corrado Piccinetti, and Giulio Malorgio. "The relationship among catch, fishing effort, and measures of fish stock abundance: implications in the Adriatic Sea." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 3 (2015): 410–21. http://dx.doi.org/10.1139/cjfas-2014-0337.

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Relationships among catch, fishing effort, and measures of fish stock abundance have several implications for fisheries research. In this context, spatial and seasonal aspects are of significant importance for management decisions, especially when effort regulation schemes are used. In this paper, the multispecies trawl fishery in the Northern and Central Adriatic Sea was investigated, taking into account the heterogeneous distribution of fish stocks. Two approaches are presented depending on the availability (or not) of fishery-independent indices of stock abundance. The empirical results ind

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Hatmar, Muh Aldhy, and Alfa Nelwan. "Surplus production model for the tuna (Thunnus Sp.) in Makassar Strait Waters." IOP Conference Series: Earth and Environmental Science 1410, no. 1 (2024): 012019. http://dx.doi.org/10.1088/1755-1315/1410/1/012019.

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Abstract Tuna (Thunnus Sp.) is a pelagic fish with high potential and economic value in the Makassar Strait. This resource utilizes tuna handlines and purse seine units, and the number of gears has increased. Therefore, effective management is crucial to ensure optimal productivity. This study analyzes the catch and effort at maximum sustainable yield (MSY) of tuna (yellowfin and bigeye) in Majene Regency, West Sulawesi Province, from 2007 to 2022, using catch per unit effort (CPUE) and production data. The analysis includes the equilibrium approach and the Schaefer model to understand the sub

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SCHMIDT, JENNIFER I., JAY M. VER HOEF, JULIE A. K. MAIER, and R. TERRY BOWYER. "CATCH PER UNIT EFFORT FOR MOOSE: A NEW APPROACH USING WEIBULL REGRESSION." Journal of Wildlife Management 69, no. 3 (2005): 1112–24. http://dx.doi.org/10.2193/0022-541x(2005)069[1112:cpuefm]2.0.co;2.

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El-Serafy, Sabry S., Alaa El-Din A. El-Haweet, Azza A. El-Ganiny, and Alaa M. El-Far. "Qarun Lake Fisheries : Fishing Gears , Species Composition and Catch per Unit Effort." Egyptian Journal of Aquatic Biology and Fisheries 18, no. 2 (2014): 39–49. http://dx.doi.org/10.12816/0011075.

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Quinn, Terrance J. "STANDARDIZATION OF CATCH-PER-UNIT-EFFORT FOR SHORT-TERM TRENDS IN CATCHABILITY." Natural Resource Modeling 1, no. 2 (1987): 279–96. http://dx.doi.org/10.1111/j.1939-7445.1987.tb00018.x.

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El-Serafy, Sabry, Alaa El-Haweet, Azza El-Ganiny, and Alaa El-Far. "Qarun Lake fisheries; Fishing gears, Species composition and Catch per unit effort." Egyptian Journal of Aquatic Biology and Fisheries 18, no. 2 (2014): 39–49. http://dx.doi.org/10.21608/ejabf.2014.2204.

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Nurasri Mulyani, Abd. Rahim, Diah Retno Dwi Hastuti, and Citra Ayni Kamaruddin. "Determinants of Catch And Catch Per Unit Effort Of Motorboat And Outboard Motorboat Fishers In Bulukumba Regency." Demeter: Journal of Farming and Agriculture 2, no. 1 (2024): 111–19. http://dx.doi.org/10.58905/demeter.v2i1.229.

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Motor and outboard boats are the main means by which fishersmen exploit the fisheries resources in these waters. The success of the catch and the efficiency of the fishermen's efforts are strongly influenced by various factors related to the characteristics of the boat, the fishing gear and the condition of the aquatic environment. This study aims to analyse the determinants of catch and catch per unit effort of motorboat and outboard motorboat fishers in bulukumba regency. Data collection techniques used were observation, interview and documentation. The number of samples was 81 modern fisher

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Hariati, Tuti. "Status dan Perkembangan Perikanan Pukat Cincin di Banda Aceh." Jurnal Penelitian Perikanan Indonesia 17, no. 3 (2017): 157. http://dx.doi.org/10.15578/jppi.17.3.2011.157-167.

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Dalam periode tahun 1995-1998 terdapat dua cara atau metode penangkapan pukat cincin di perairan Banda Aceh. Cara pertama adalah mengejar gerombolan ikan pelagis besar pada siang hari dan cara kedua mengumpulkan kelompok ikan pelagis kecil menggunakan cahaya lampu pada malam hari. Tujuan penelitian pada tahun 2009 adalah untuk memperoleh informasi baru perkembangan perikanan pukat cincin, penambahan cara penangkapan, komposisi hasil tangkapan, indeks kelimpahan, dan puncak hasil tangkapan ikan pelagis yang dominan. Data yang dikumpulkan terdiri atas jumlah kapal, ukuran kapal, ukuran jaring, h

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Cardin, M., and M. Welis. "Seasonal effects on blue swimming crab catch per unit effort (CPUE) in Tiworo Strait, Southeast Sulawesi, Indonesia." IOP Conference Series: Earth and Environmental Science 1400, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1755-1315/1400/1/012015.

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Abstract Blue swimming crab (BSC) resources are fisheries commodities that have important economic value, so their utilization needs to be carried out sustainably. Understanding crab fishing season patterns is very important in efforts to improve the efficiency and effectiveness of crab fishing industry. This study aimed to analyze the abundance and catch per unit effort (CPUE) of blue swimming crab based on season in the the Tiworo Strait, Southeast Sulawesi, Indonesia. BSC sampling was conducted monthly from October 2022 to March 2023 (west season) and April to September 2023 (east season).

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Hornborg, Sara, and Anthony D. M. Smith. "Fisheries for the future: greenhouse gas emission consequences of different fishery reference points." ICES Journal of Marine Science 77, no. 5 (2020): 1666–71. http://dx.doi.org/10.1093/icesjms/fsaa077.

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Abstract Global fisheries have for long been scrutinized in terms of ecosystem effects but only more recently for their greenhouse gas emissions. These emissions are dominated by fuel use on fishing vessels and the levels are often neglected side effects of resource overexploitation. Using a simple production model, Pella-Tomlinson, we illustrate how fuel efficiency (fuel use per unit of catch) varies with the level of exploitation and biomass depletion. For this model, fuel use per unit catch rises hyperbolically with fishing effort—it is relatively flat at low levels of effort but rises stee

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Mariappan, S., T. Ravikumar, N. Neethiselvan, E. Dineshkumar, N. Dhilipmaniraj, and S. Manickavasagam. "Comparison of catch efficiency of wire mesh fish traps operated along the coast of Thoothukudi, South-east coast of India." Journal of Environmental Biology 45, no. 6 (2024): 695–704. http://dx.doi.org/10.22438/jeb/45/6/mrn-5298.

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Aim: The study designs and fabricates traps with diverse wire mesh colors and shapes for field experiments. It also collects detailed catch data to assess their catch efficiency and determine the most effective design. Methodology: Experimental fish traps were fabricated utilizing four distinct colors (Light green, Dark green, White and Orange) and three different shapes (rectangle, square and circle). Fishing trials were conducted in selected fishing villages of Thereshpuram, with the traps operated fortnightly from June 2022 to May 2023. The catch rate per trip (CPUE) was calculated using th

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Kartini, Nidya, Mennofatria Boer, and Ridwan Affandi. "Analisis CPUE (Catch Per Unit Effort) dan Potensi Lestari Sumberdaya Perikanan Tembang (Sardinella fimbriata) di Perairan Selat Sunda." MANFISH JOURNAL 1, no. 03 (2021): 183–89. http://dx.doi.org/10.31573/manfish.v1i03.271.

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Sunda Strait has high values of fish resources, one of the resource are fringescale sardinella (Sardinella fimbriata). Catches composition for fringescale sardinella was 26% and the largest among the composition of other small pelagic fish. Management of fish resources needs to be carried out in a controlled manner followed by monitoring of the sustainability fish resources. This study aims to analyze the value of CPUE, assess the status of the stock, and total allowable catch of fringescale sardinella in the Sunda Strait. The method used in this research was descriptive method. The results sh

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Briggs, SV, and JE Holmes. "Bag Sizes of Waterfowl in New-South-Wales and Their Relation to Antecedent Rainfall." Wildlife Research 15, no. 4 (1988): 459. http://dx.doi.org/10.1071/wr9880459.

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Bag sizes of game ducks in New South Wales between 1977 and 1984 were compared with antecedent annual rainfall in eastern Australia. Mean bag size is equivalent to 'catch-per-unit-effort', an index of population abundance. Annual rainfall is an index of habitat availability for waterfowl. Bag sizes of Pacific black duck and all game species combined were significantly (P<O.05) related to antecedent rainfall. Rates of increase (computed from annual catch-per-unit-effort) of black duck, maned duck and all species combined were significantly related to rainfall difference between the preceding

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Sara, J. R., O. L. F. Weyl, S. M. Marr, W. J. Smit, P. S. O. Fouché, and W. J. Luus-Powell. "Gill net catch composition and catch per unit effort in Flag Boshielo Dam, Limpopo Province, South Africa." Water SA 43, no. 3 (2017): 463. http://dx.doi.org/10.4314/wsa.v43i3.11.

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Genç, Tuğçe Şensurat, and Okan Akyol. "Seasonal catch composition and catch per unit effort of coastal fishery in Yenişakran (Çandarlı Bay, Aegean Sea)." Ege Journal of Fisheries and Aquatic Sciences 37, no. 1 (2020): 9–14. http://dx.doi.org/10.12714/egejfas.37.1.02.

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This study presents the catch records of a coastal fisherman during daily fishing trip between 2017 and 2018 in Yenişakran, Çandarlı Bay (Aegean Sea). The trammel net and longline were used at depths of 5-25 m on a sandy bottom and the sea meadows during the year. A total of 39 species were identified from the both trammel netting and the longlining. Mean catch per unit effort (CPUE) values (8.7±0.1 kg/1000 m net and 12.9±0.8 kg/1000 hooks) shown that longlining was more efficient fishing gear than the trammel netting. In terms of mean CPUE values, there is significantly difference between tra

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Nababa, Abdulsalam, Mustapha Amadu Sadauki, and Hadiza Yakubu Bako. "Water Quality and Catch Per Unit Effort (CPUE) of Fish Species in Zobe Reservoir, Dutsin-Ma, Nigeria." UMYU Scientifica 1, no. 1 (2022): 234–40. http://dx.doi.org/10.56919/usci.1122.030.

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A twelve month study was carried out between March 2020 and February 2021, to assess water quality parameters and fishermen catch per unit effort of Zobe reservoir in Katsina State, Nigeria with the aim of understanding the contamination position of water body and fishing effort. Five chosen sampling stations are; Raddawa, Tabobi, Gada, Garhi, and Makera. Selected physicochemical parameters such as temperature, pH, NH3, turbidity, alkalinity, BOD and alkalinity were assessed using standard methods. However, they were within all the recommended level for optimum performance of tropical fish spe

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Rais, Aroef Hukmanan, and Tuah Nanda Merlia Wulandari. "Production and Maximum Sustainable Yield of fisheries activity in Hulu Sungai Utara Regency." E3S Web of Conferences 147 (2020): 02008. http://dx.doi.org/10.1051/e3sconf/202014702008.

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Production and fishing activities of inland waters in the Hulu Sungai Utara Regency (HSU) have a large contribution to fulfill the food needs for the local people in South Borneo. A total of 65% of the inland waters in the HSU Regency are floodplains. This research aimed to describe the production of capture fisheries products from 2010 to 2016, the catch per unit of effort (CPUE), the estimation of maximum sustainable (MSY), the biodiversity of fish species in the flood plain waters of Hulu Sungai Utara Regency (HSU). Research and field data collection was carried out throughout 2016, by coll

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Shardlow, Thomas F. "Components Analysis of a Density-Dependent Catchability Coefficient in a Salmon Hook and Line Fishery." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 3 (1993): 513–20. http://dx.doi.org/10.1139/f93-060.

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The relationship between the catch per unit of effort (C/E) of salmon anglers and salmon abundance was determined by using simultaneous estimates of both C/E and salmon density (n). Salmon in their natural marine environment were observed as they approached fishing gear. The components of catch, such as the number of fish approaching, attacking, and biting the lure per unit of fishing effort, were recorded. C/E was not linearly related to density because the estimate of the catchability coefficient q increased with abundance. This result contrasts with previous empirical studies of catchabilit

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