Analysis of the influence of the vertical structure of water temperature on the catch rate of yellowfin tuna in the tropical central and western Pacific based on the GAM model

Yang Shenglong; Fan Xiumei; Wu Zuli; Wu Yumei; Dai Yang

doi:10.12284/hyxb2021040

Volume 43 Issue 4

Apr. 2021

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Yang Shenglong，Fan Xiumei，Wu Zuli, et al. Analysis of the influence of the vertical structure of water temperature on the catch rate of yellowfin tuna in the tropical central and western Pacific based on the GAM model[J]. Haiyang Xuebao，2021, 43(4)：46–54 doi: 10.12284/hyxb2021040

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Analysis of the influence of the vertical structure of water temperature on the catch rate of yellowfin tuna in the tropical central and western Pacific based on the GAM model

doi: 10.12284/hyxb2021040

Yang Shenglong^{1, 2
,},
Fan Xiumei¹,
Wu Zuli¹,
Wu Yumei¹,
Dai Yang^{1
,
,}

1.
Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
2.
Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China

Received Date: 2020-05-06
Rev Recd Date: 2020-09-04

Available Online: 2021-06-18

Publish Date: 2021-04-01

Abstract

Abstract

The foraging depth of yellowfin tuna (Thunnus obesus), which is primarily influenced by the vertical structure of the water temperature, has a significant effect on longline catch rates. Therefore, the generalized additive model (GAM) was applied to analyse the influence of subsurface environmental variables on the longline catch per unit of effort (CPUE) in the central and western Pacific. The results show that subsurface environmental factors have significant impacts on the spatial distribution of yellowfin tuna catches in longline fisheries. The longline CPUE for the yellowfin tuna in the tropical central and western Pacific rise rapidly after 2012. A high catch rate appears in the northern hemisphere during summer in the region near 10°S, 140°E. The upper boundary temperature and depth of the thermocline, the lower depth of the thermocline, the depth of the isotherm at 18℃, and the relative depth between △8℃ and the lower depth of thermocline greatly influence the longline fishing rate. These key environmental factors affect the tropical central and western Pacific yellowfin tuna longline catch. The CPUE increases as the temperature and the depth of the upper boundary of the thermocline increased. The strongly associated relationships between the upper boundary temperature and depth with CPUE were 27−28℃ and 70−90 m, respectively. High catch rates are observed when the lower boundary depth of the thermocline is from 250 m to 280 m. Then, as the lower boundary depth increased, the CPUE value quickly decreased. The effect of the 18℃ isotherm depth on the CPUE of longline fishing initially fluctuated and then increased. The nonlinear effects of the relative depth between △8℃ and the lower depth of the thermocline first decreased and then increased slowly. The strong associations between CPUE and the 18℃ isotherm depths and relative depth are at 230 m and 70 m, respectively. The catch rates reaches a maximum when the vertical habitat is compressed, making it consistent with hooking depth. The catch rates could be changed by adjusting the depth of hooks. The vertical habitat of tuna should be taken into account in fisheries stock assessments and fishing grounds analysis.
- Thunnus obesus,
- subsurface environmental,
- vertical structure of the water temperature,
- CPUE

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References(26)

References

[1]	Bertrand A, Josse E, Bach P, et al. Hydrological and trophic characteristics of tuna habitat: consequences on tuna distribution and longline catchability[J]. Canadian Journal of Fisheries and Aquatic Sciences, 2002, 59(6): 1002−1013.
[2]	Boggs C H. Depth, capture time, and hooked longevity of longline-caught pelagic fish: timing bites of fish with chips[J]. Fishery Bulletin, 1992, 90(4): 642−658.
[3]	Bigelow K A, Maunder M N. Does habitat or depth influence catch rates of pelagic species?[J]. Canadian Journal of Fisheries and Aquatic Sciences, 2007, 64(11): 1581−1594.
[4]	Schaefer K M, Fuller D W, Block B A. Movements, behavior, and habitat utilization of yellowfin tuna (Thunnus albacares) in the northeastern Pacific Ocean, ascertained through archival tag data[J]. Marine Biology, 2007, 152(3): 503−525.
[5]	Schaefer K M, Fuller D W, Block B A. Movements, behavior, and habitat utilization of yellowfin tuna (Thunnus albacares) in the Pacific Ocean off Baja California, Mexico, determined from archival tag data analyses, including unscented Kalman filtering[J]. Fisheries Research, 2011, 112(1/2): 22−37.
[6]	Block B A, Keen B, Castillo B, et al. Environmental preferences of yellowfin tuna (Thunnus albacares) at the northern extent of its range[J]. Marine Biology, 1997, 130: 119−132.
[7]	Deary A L, Moret-Ferguson S, Engels M, et al. Influence of central pacific oceanographic conditions on the potential vertical habitat of four tropical tuna species[J]. Pacific Science, 2015, 69(4): 461−475.
[8]	Prince E D, Goodyear C P. Hypoxia-based habitat compression of tropical pelagic fishes[J]. Fisheries Oceanography, 2006, 15(6): 451−464.
[9]	Prince E D, Luo J G, Goodyear C P, et al. Ocean scale hypoxia-based habitat compression of Atlantic istiophorid billfishes[J]. Fisheries Oceanography, 2010, 19(6): 448−462.
[10]	Brill R W, Block B A, Boggs C H, et al. Horizontal movements and depth distribution of large adult yellowfin tuna (Thunnus albacares) near the Hawaiian Islands, recorded using ultrasonic telemetry: implications for the physiological ecology of pelagic fishes[J]. Marine Biology, 1999, 133(3): 395−408.
[11]	Brill R W, Bigelow K A, Musyl M K, et al. Bigeye tuna (Thunnus obesus) behavior and physiology and their relevance to stock assessments and fishery biology[J]. Collective Volume of Scientific Papers ICCAT, 2005, 57(2): 142−161.
[12]	Lan K W, Shimada T, Lee M A, et al. Using remote-sensing environmental and fishery data to map potential yellowfin tuna habitats in the tropical pacific ocean[J]. Remote Sensing, 2017, 9(5): 444.
[13]	杨胜龙, 张忭忭, 靳少非, 等. 中西太平洋延绳钓黄鳍金枪鱼渔场时空分布与温跃层关系[J]. 海洋学报, 2015, 37(6): 78−87. Yang Shenglong, Zhang Bianbian, Jin Shaofei, et al. Relationship between the temporal-spatial distribution of longline fishing grounds of yellowfin tuna (Thunnus albadares) and the thermocline characteristics in the Western and Central Pacific Ocean[J]. Haiyang Xuebao, 2015, 37(6): 78−87.
[14]	Briand K, Molony B, Lehodey P. A study on the variability of albacore (Thunnus alalunga) longline catch rates in the southwest Pacific Ocean[J]. Fisheries Oceanography, 2011, 20(6): 517−529.
[15]	Josse E, Bach P, Dagorn L. Simultaneous observations of tuna movements and their prey by sonic tracking and acoustic surveys[J]. Hydrobiologia, 1998, 371/372: 61−69.
[16]	宋利明, 陈新军, 许柳熊. 大西洋中部黄鳍金枪鱼(Thunnus albacares)的垂直分布与有关环境因子的关系[J]. 海洋与湖沼, 2004, 35(1): 64−68. doi: 10.3321/j.issn:0029-814X.2004.01.010 Song Liming, Chen Xinjun, Xu Liuxiong. Relationship between vertical distribution of yellowfin tunas’ (Thunnus albacares) and the concerned environmental factors in the Central Atlantic Ocean[J]. Oceanologia et Limnologia Sinica, 2004, 35(1): 64−68. doi: 10.3321/j.issn:0029-814X.2004.01.010
[17]	Mohri M, Nishida T. Consideration on distribution of adult yellowfin tuna (Thunnus albacares) in the Indian Ocean based on Japanese tuna longline fisheries and survey information[J]. IOTC Proceeding, 2000(3): 276−282.
[18]	Hazen E L, Johnston D W. Meridional patterns in the deep scattering layers and top predator distribution in the central equatorial Pacific[J]. Fisheries Oceanography, 2010, 19(6): 427−433.
[19]	宋利明, 张禹, 周应祺. 印度洋公海温跃层与黄鳍金枪鱼和大眼金枪鱼渔获率的关系[J]. 水产学报, 2008, 32(3): 369−378. Song Liming, Zhang Yu, Zhou Yingqi. The relationships between the thermocline and the catch rate of Thunnus albacares and Thunnus obesus in the high seas of the Indian Ocean[J]. Journal of Fisheries of China, 2008, 32(3): 369−378.
[20]	栾松鹤, 戴小杰, 田思泉, 等. 中西太平洋金枪鱼延绳钓主要渔获物垂直结构的初步研究[J]. 海洋渔业, 2015, 37(6): 501−509. doi: 10.3969/j.issn.1004-2490.2015.06.003 Luan Songhe, Dai Xiaojie, Tian Siquan, et al. Vertical distribution of main species captured by tuna longline fishery in the western and central Pacific[J]. Marine Fisheries, 2015, 37(6): 501−509. doi: 10.3969/j.issn.1004-2490.2015.06.003
[21]	王少琴, 许柳雄, 朱国平, 等. 中西太平洋金枪鱼围网的黄鳍金枪鱼CPUE时空分布及其与环境因子的关系[J]. 大连海洋大学学报, 2014, 29(3): 303−308. Wang Shaoqin, Xu Liuxiong, Zhu Guoping, et al. Spatial-temporal profiles of CPUE and relations to environmental factors for yellowfin tuna Thunnus albacores from purse-seine fishery in western and central Pacific Ocean[J]. Journal of Dalian Fisheries University, 2014, 29(3): 303−308.
[22]	Leroy B, Itano D G, Usu T. Vertical Behavior and the Observation of FAD Effects on Tropical Tuna in the Warm-Pool of the Western Pacific Ocean[C]//Western and Central Pacific Fisheries Commission Scientific Committee, Six Regular Session. Nuku’alofa, Tonga, 2010.
[23]	Harley S J, Myers R A, Dunn A. Is catch-per-unit-effort proportional to abundance?[J]. Canadian Journal of Fisheries and Aquatic Sciences, 2001, 58(9): 1760−1772.
[24]	Maunder M N, Langley A D. Integrating the standardization of catch-per-unit-of-effort into stock assessment models: testing a population dynamics model and using multiple data types[J]. Fisheries Research, 2004, 70(2/3): 389−395.
[25]	Kell L, Palma C, Prince E. Standardization of blue marlin CPUE taking into account habitat compression[J]. Collective Volume of Scientific Papers ICCAT, 2011, 66(4): 1738−1759.
[26]	Hinton M G, Nakano H. Standardizing catch and effort statistics using physiology, ecology, or behavioral constraints and environmental data, with an application to Blue Marlin (Makaira nigricans) catch and effort data from Japanese longline fisheries in the Pacific[J]. Inter-American Tropical Tuna Commission Bulletin, 1996, 21: 171−200.