Recruitment forecasting of yellowfin tuna in the eastern Pacific Ocean with artificial neuronal networks

Torres-Faurrieta, Laura Karen; Dreyfus-León, Michel; Rivas, David

doi:10.1016/j.ecoinf.2016.10.005

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…This result suggests that the PDO influences the standardized CPUE and distribution of YFT. Previous studies have also reported that the PDO causes global SST variation 40 and influences the recruitment and abundance of YFT 7 , 22 , 41 . During the positive phases of the PDO, the Aleutian Low pressure system deepens and shifts southwards, and SSTs decrease in the central and western Pacific, cooling the winds and increasing the levels of nutrients and biological production more than negative PDO events 42 .…”

Section: Discussionmentioning

confidence: 92%

“…The present study provides valuable data demonstrating the effects of decadal climate variability on the spatiotemporal distribution of YFT. Numerous studies have also noted the influence of decadal climate variability on global tuna species abundance 7 , 8 , 22 , 26 , 27 . Decadal climate index phases changes can influence the marine environment and thus the standardized CPUE, spatial distribution, and habitat preference of YFT in the Indo-Pacific Ocean.…”

Section: Discussionmentioning

confidence: 99%

“…For example, the number of yellowfin tuna caught using purse seines (targeting immature yellowfin tuna) has increased since the 1980s. The increased use of purse seines may have reduced immature tuna abundance and even caused recruitment decline 22 , 52 . The continual decreases in longline fishery tuna species catches since 1980s coincide with the AMO phase shift that occurred in the 1990s and 2000s, resulting in the significant and strong correlations discovered in the time series analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have demonstrated that multidecadal climate variabilities (i.e., AMO, PDO, and NPGO) play a pivotal role in global YFT population dynamics, including recruitment and distribution 7 – 15 , 20 – 22 . Numerous studies have also revealed strong links to climatic phenomena within a single basin, but few studies have focused on transoceanic phenomena.…”

Section: Introductionmentioning

confidence: 99%

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Effects of decadal climate variability on spatiotemporal distribution of Indo-Pacific yellowfin tuna population

Lan²,

Evans³

et al. 2022

Sci Rep

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Spatial variations in tuna population and abundance are strongly linked to large-scale climate fluctuations, such as the Pacific decadal oscillation (PDO) and Atlantic multidecadal oscillation (AMO). However, the mechanisms underlying the association of climate indices with yellowfin tuna (YFT) abundance and habitat preference remain unclear. We analysed long-term longline fishery data for YFT and oceanic climate variability index data for 1971–2018. The standardized catch per unit effort (CPUE) of Indo-Pacific Ocean YFT was higher during negative AMO and positive PDO phases. In tropical Pacific Ocean, the trend of YFT habitat preference exhibited seesaw patterns because of the distinct environmental factors influenced by the PDO phase. The PDO changed the environmental parameters throughout the tropical Indian Ocean such that the habitat preference of YFT remained consistent throughout. However, the variations in habitat suitability did not correspond to the distribution or standardized CPUE of YFT throughout the Pacific Ocean during AMO events. Moreover, the changes in habitat suitability had a positive periodicity of 8–16 years with AMO in the Indian Ocean, but revealed opposite trends with the distribution or standardized CPUE of YFT. Our results provide sufficient information to distinguish the variations between PDO phase changing and YFT standardized CPUE/ habitat preference. Furthermore, the AMO phase shift period 60–100 years longer than that of the PDO (20–30 years), and models employing time series of fishery and environmental data must be extended the time period of our study to make the AMO match the fishery data more complete.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of decadal climate variability on spatiotemporal distribution of Indo-Pacific yellowfin tuna population

Lan²,

Evans³

et al. 2022

Sci Rep

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“…Langley et al. (2009) and Torres‐Faurrieta, Dreyfus, and Rivas (2016) concluding that the YFT recruitment in the Pacific Ocean is driven by the variability in the spatial extent of the warm pool, which tends to occur during El Niño conditions (i.e., negative SOI). These findings appear to be in opposition to our results, but recent oceanography studies show that during the El Niño (i.e., negative SOI), cold SST anomalies appear and intensify in the east of tropical Indian Ocean (Hu, Wu, & Wu, 2018).…”

Section: Discussionmentioning

confidence: 99%

Climatic oscillations effect on the yellowfin tuna (Thunnus albacares) Spanish captures in the Indian Ocean

Báez

Czerwinski

Ramos

2020

Fisheries Oceanography

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Tuna species were one of the four most valuable fishing classes (together to lobsters, shrimps, and cephalopods) in 2014 (FAO, 2016), and they are considered an important contributor to global food security (Báez, Pascual-Alayón, Ramos, & Abascal, 2018). During 2014, the total catches of tuna and tuna-like species reached a new record, with almost 7.7 million tonnes caught and delivered to market (FAO, 2016). The yellowfin tuna (Thunnus albacares) (YFT) is among the eight marine species with the highest catches globally (FAO, 2016). The Spanish purse seine freezer fleet operating in the Indian Ocean is of the fleets with most YFT catches globally. It consists of a total of 15 fishing boats supported by 6 non-fishing vessels, mainly managing the floating objects stock (deployment, detection, tuna school estimation, etc.). During 2014, the Spanish purse seiners from Indian Ocean caught 3.95% of the yellowfin tuna tonnes landed worldwide (data deducted from Báez et al., 2017). The "Instituto Español de Oceanografía" (IEO) in Spain is responsible for producing scientific estimates of catch, effort, and other biological data for the Spanish purse seine fleet. Since 1990, the annual catch by species from Spanish purse seine freezer fleet operating in the Indian Ocean has been reported to the Indian Ocean Tuna Commission (IOTC) (see Báez et al., 2018 for the latest available report).

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Four-channel generative adversarial networks can predict the distribution of reef-associated fish in the South and East China Seas

Wang,

Tabeta

2023

Ecological Informatics

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Recruitment forecasting of yellowfin tuna in the eastern Pacific Ocean with artificial neuronal networks

Cited by 8 publications

References 17 publications

Effects of decadal climate variability on spatiotemporal distribution of Indo-Pacific yellowfin tuna population

Effects of decadal climate variability on spatiotemporal distribution of Indo-Pacific yellowfin tuna population

Climatic oscillations effect on the yellowfin tuna (Thunnus albacares) Spanish captures in the Indian Ocean

Four-channel generative adversarial networks can predict the distribution of reef-associated fish in the South and East China Seas

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