Estimating steepness of the stock-recruitment relationship in Chilean fish stocks using meta-analysis

Wiff, Rodrigo; Flores, Andrés; Neira, Sergio Peña; Caneco, Bruno

doi:10.1016/j.fishres.2017.12.004

Cited by 12 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wiff et al . () proposed a rapid method to estimate steepness in Chilean fisheries (and thus MSY) using the ratio of L F50 and L ∞ . Thus, maturity reported in this study directly contributed to estimate resilience via steepness and subsequently MSY and related species‐specific management action to ensure conservation in S. caerulea and S. punctata fished in the austral zone off Chile.…”

Section: Discussionmentioning

confidence: 99%

“…Chile's fisheries management is based on the concept of maximum sustainable yield (MSY) which almost exclusively depends on the steepness of the stockrecruitment relationship as a resilience metric (Mangel et al, 2013, Wiff et al, 2016. Wiff et al (2018) proposed a rapid method to estimate steepness in Chilean fisheries (and thus MSY) using the ratio of L F50 and L ∞ . Thus, maturity reported in this study directly contributed to estimate resilience via steepness and subsequently MSY and related species-specific management action to ensure conservation in S. caerulea and S. punctata fished in the austral zone off Chile.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Reproductive biology and population structure of white warehou Seriolella caerulea and silver warehou Seriolella punctata in the austral zone off Chile

Liu

Flores

Quiróz

et al. 2019

Journal of Fish Biology

Self Cite

View full text Add to dashboard Cite

Using an extensive database compiled by scientific observers aboard commercial fishing operations between 1984 and 2014, we describe the maturity and size structures of white warehou Seriolella caerulea and silver warehou Seriolella punctata from by‐catch of the trawling industrial fisheries operating in the austral zone off Chile. Macroscopic maturity stages and gonadosomatic (IGS) index show mature females throughout the year and a pronounced spawning period in both austral autumn and winter seasons, with an IGS peak in July for S. punctata and August for S. caerulea. Reproductive patterns in both species show an extended spawning season (July to September) across the area between 43 and 47° S. Length–mass relationships showed significant differences between sexes in both species, where females reach a larger size. Fork length at 50% maturity was 43.5 cm for S. caerulea and 37.2 cm for S. punctata. Female catch composition is dominated by adult fish (96% for S. caerulea and 86% for S. punctata). Currently, both species are exploited with no assessment and management‐decision framework. Therefore, information regarding reproductive biology and demographic traits becomes an important baseline to ensure adequate fisheries management for both species.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Reproductive biology and population structure of white warehou Seriolella caerulea and silver warehou Seriolella punctata in the austral zone off Chile

Liu

Flores

Quiróz

et al. 2019

Journal of Fish Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Long‐lived, highly fecund species like Barramundi tend to be capable of maintaining high recruitment at low spawner biomass and are, therefore, usually characterized by high steepness parameterizations in stock‐recruitment functions (Myers et al, 2002). Previous stock assessments for Barramundi fisheries in Australia (e.g., Streipert et al, 2019; Tanimoto et al, 2012) have used a Beverton–Holt stock‐recruitment function with a default steepness of h = 0.7 ( h is the proportion of recruitment produced when the spawning stock has been reduced to 20% of its unexploited size; Wiff et al, 2018). The underlying stock‐recruitment function is stationary in these models, although annual variation in recruitment has been incorporated via the addition of random recruitment variability functions (Streipert et al, 2019; Tanimoto et al, 2012) and by adjusting the stock‐recruitment function in response to anomalies in river discharge based on previous correlative analyses of hydrology–recruitment relationships (please refer to Tanimoto et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Environmental drivers of recruitment in a tropical fishery: Monsoonal effects and vulnerability to water abstraction

Crook

Morrongiello

King

et al. 2022

Ecological Applications

View full text Add to dashboard Cite

Fisheries and natural water resources across the world are under increasing pressure from human activity, including fishing and irrigated agriculture. There is an urgent need for information on the climatic/hydrologic drivers of fishery productivity that can be readily applied to management. We use a generalized linear mixed model framework of catch curve regression to resolve the key climatic/hydrological drivers of recruitment in Barramundi Lates calcarifer using biochronological (otolith aging) data collected from four river‐estuary systems in the Northern Territory, Australia. These models were then used to generate estimates of the year class strength (YCS) outcomes of different water abstraction scenarios (ranging from 10% to 40% abstraction per season/annum) for two of the rivers in low, moderate, and high discharge years. Barramundi YCS displayed strong interannual variation and was positively correlated with regional monsoon activity in all four rivers. River‐specific analyses identified strong relationships between YCS and several river‐specific hydrology variables, including wet and dry season discharge and flow duration. Water abstraction scenario models based on YCS–hydrology relationships predicted reductions of >30% in YCS in several cases, suggesting that increased water resource development in the future may pose risks for Barramundi recruitment and fishery productivity. Our study demonstrates the importance of the tropical monsoon as a driver of Barramundi recruitment and the potential for detrimental impacts of increased water abstraction on fishery productivity. The biochronological and statistical approaches we used have the potential to be broadly applied to inform policy and management of water resource and fisheries.

show abstract

Reproductive traits of female of pink cusk-eel (Genypterus blacodes Schneider, 1801) in the fjords of the Chilean Patagonia

Flores

Wiff

Brown

et al. 2020

Estuarine, Coastal and Shelf Science

View full text Add to dashboard Cite

Estimating steepness of the stock-recruitment relationship in Chilean fish stocks using meta-analysis

Cited by 12 publications

References 41 publications

Reproductive biology and population structure of white warehou Seriolella caerulea and silver warehou Seriolella punctata in the austral zone off Chile

Reproductive biology and population structure of white warehou Seriolella caerulea and silver warehou Seriolella punctata in the austral zone off Chile

Environmental drivers of recruitment in a tropical fishery: Monsoonal effects and vulnerability to water abstraction

Reproductive traits of female of pink cusk-eel (Genypterus blacodes Schneider, 1801) in the fjords of the Chilean Patagonia

Contact Info

Product

Resources

About