Fast versus slow growing tuna species: age, growth, and implications for population dynamics and fisheries management

Murua, Hilário; Rodríguez‐Marín, E.; Neilson, John D.; Farley, Jessica; Juan‐Jordá, Maria José

doi:10.1007/s11160-017-9474-1

Cited by 55 publications

(44 citation statements)

References 128 publications

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“…Similarly, albacore in the eastern South Pacific have larger gonads relative to their somatic weight than specimens in the western Pacific (Farley et al, ) and reach first maturity at a slightly smaller size (Farley et al, ). Growth and reproductivity are often influenced by factors including oxygen concentration, temperature, and prey availability (Murua et al, ); however, differences in absolute size reported by Williams and Terawasi () did not correlate with gradients in any abiotic factor. It is possible that there is a genetic element convoluting the relationship.…”

Section: Discussionmentioning

confidence: 94%

“…Unfortunately, unlike tropical tunas that can sustain large volume extraction industries due to their high fecundity and rapid growth to maturity (Goujon & Majkowski, ), albacore takes four or more years to mature (Duncan, Brophy, & Arrizabalaga, ; Williams, Farley, Hoyle, Davies, & Nicol, ). This slow growth pattern makes albacore, like bluefin and other temperate tuna species, much more susceptible to overfishing than tropical counterparts (Murua, Rodriguez‐Marin, Neilson, Farley, & Juan‐Jordá, ).…”

Section: Introductionmentioning

confidence: 99%

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Indications of strong adaptive population genetic structure in albacore tuna (Thunnus alalunga) in the southwest and central Pacific Ocean

Anderson

Hampton

Smith

et al. 2019

Ecology and Evolution

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Albacore tuna (Thunnus alalunga) has a distinctly complex life history in which juveniles and adults separate geographically but at times inhabit the same spaces sequentially. The species also migrates long distances and presumably experiences varied regimes of physical stress over a lifetime. There are, therefore, many opportunities for population structure to arise based on stochastic differences or environmental factors that promote local adaptation. However, with the extent of mobility consistently demonstrated by tagged individuals, there is also a strong argument for panmixia within an ocean basin. It is important to confirm such assumptions from a population genetics standpoint for this species in particular because albacore is one of the principal market tuna species that sustains massive global fisheries and yet is also a slow‐growing temperate tuna. Consequently, we used 1,837 neutral SNP loci and 89 loci under potential selection to analyze population genetic structure among five sample groups collected from the western and central South Pacific. We found no evidence to challenge panmixia at neutral loci, but strong indications of structuring at adaptive loci. One population sample, from French Polynesia in 2004, was particularly differentiated. Unfortunately, the current study cannot infer whether the divergence is geographic or temporal, or possibly caused by sample distribution. We encourage future studies to include potentially adaptive loci and to continue fine‐scale observations within an ocean basin, and not to assume genome‐wide panmixia.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Indications of strong adaptive population genetic structure in albacore tuna (Thunnus alalunga) in the southwest and central Pacific Ocean

Anderson

Hampton

Smith

et al. 2019

Ecology and Evolution

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“…The multi-annual correlation between catch rates and habitat size may also reflect the rapid response of SKJ populations to a change in their environment. SKJ grow quickly and mature early (Grande et al, 2014;Murua et al, 2017). Despite the difficulties associated in obtaining absolute age estimates and the fact that there can be notable inter-individual variability in growth, mark-recapture data suggests that SKJ are capable of rapid growth in the first months of life, resulting in maturity at around 6 months of age Murua et al, 2017).…”

Section: From Habitat Dynamics To Skipjack Stock and Purse Seine Fishingmentioning

confidence: 99%

“…SKJ grow quickly and mature early (Grande et al, 2014;Murua et al, 2017). Despite the difficulties associated in obtaining absolute age estimates and the fact that there can be notable inter-individual variability in growth, mark-recapture data suggests that SKJ are capable of rapid growth in the first months of life, resulting in maturity at around 6 months of age Murua et al, 2017). The overall size of favorable feeding habitat in the IO may, therefore, be interpreted as an indicator of the carrying capacity of the environment to sustain the growth of SKJ populations.…”

Section: From Habitat Dynamics To Skipjack Stock and Purse Seine Fishingmentioning

confidence: 99%

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Skipjack Tuna Availability for Purse Seine Fisheries Is Driven by Suitable Feeding Habitat Dynamics in the Atlantic and Indian Oceans

et al. 2017

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An Ecological Niche model was developed for skipjack tuna (Katsuwonus pelamis, SKJ) in the Eastern Central Atlantic Ocean (AO) and Western Indian Ocean (IO) using an extensive set of presence data collected by the European purse seine fleet (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014).Chlorophyll-a fronts were used as proxy for food availability while mixed layer depth, sea surface temperature, dissolved oxygen, salinity, current intensity, and height anomaly variables were selected to describe SKJ's abiotic environmental preferences. The resultant ecological niche included both mesoscale eddy-type productive features that displayed latitudinal range in the IO to large scale upwelling systems that shrink and swell seasonally in the AO. Overall, 83% of all free swimming school sets (FSC) and 75% of drifting fish aggregating device sets (dFAD) that contained SKJ occurred within 25 km of favorable feeding habitat. In the AO, 34% of dFAD sets were made more than 100 km away from this habitat, mostly in the surface chlorophyll-a poor environment of the Guinea Current. These distant sets represent 10% of dFAD sets in the IO and 8% of all FSC sets. Our results suggest that the Mozambique Channel in the IO, with its simultaneously favorable feeding and spawning conditions, may seasonally offer a better SKJ nursery habitat than the Guinea Current which shows a substantially poorer feeding capacity. With the exception of this latter area, our results also suggest that fishing accessibility will be higher in months where the size of the favorable feeding habitats are reduced, likely because this reduction drives a geographical contraction in SKJ populations. The observed relationship between the annual size of favorable feeding habitat and both annual catch rates and total catches in the IO is consistent with the near-full exploitation of this stock that has occurred since the 2000s. Moreover, it suggests that annual habitat size could be used as an indicator of growth capacity for this highly productive stock. Habitat monitoring, as part of a dynamic fisheries management approach, should contribute to the sustainable exploitation of SKJ by providing information on the climate-dependent aspects of stock variability and the effects of dFAD deployment in food-rich habitats.

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Age and Growth of Yellowfin Tuna in the U.S. Gulf of Mexico and Western Atlantic

et al. 2021

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Age, growth, and mortality were estimated for Yellowfin Tuna Thunnus albacares from the U.S. Gulf of Mexico and western Atlantic Ocean. During 2004-2017, 3,443 Yellowfin Tuna were sampled, primarily from recreational landings off the coast of Louisiana (90%). Based on reading otoliths, ages ranged from 1 to 18 years, with younger fish (<4 years) representing the majority (78%) of the age-classes. Otolith weight was allometrically related to fish

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Fast versus slow growing tuna species: age, growth, and implications for population dynamics and fisheries management

Cited by 55 publications

References 128 publications

Indications of strong adaptive population genetic structure in albacore tuna (Thunnus alalunga) in the southwest and central Pacific Ocean

Indications of strong adaptive population genetic structure in albacore tuna (Thunnus alalunga) in the southwest and central Pacific Ocean

Skipjack Tuna Availability for Purse Seine Fisheries Is Driven by Suitable Feeding Habitat Dynamics in the Atlantic and Indian Oceans

Age and Growth of Yellowfin Tuna in the U.S. Gulf of Mexico and Western Atlantic

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