Browsing by Author "Wiff, Rodrigo"
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- ItemA multivariate statistical analysis to determine catch intention in the pink cusk-eel (Genypterus blacodes) longline fishery in southern Chile(2020) Wiff, Rodrigo; González, G. M.; Contreras, F.; San Martin, M. A.; Canales, T. M.
- ItemA survey-based approach to constructing an abundance index of the pink cusk-eel (Genypterus blacodes) in the fjords of Chilean Patagonia(2020) Wiff, Rodrigo; Flores, A.; Queirolo, D.; Ahumada, M.; Apablaza, P.; Gacitúa, S.; Montero Styles, José Tomás; Gelcich, Stefan; Cañete, F. T.; Lima Arce, Mauricio
- ItemAccuracy of gonadosomatic index in maturity classification and estimation of maturity ogive(2019) Flores, Andrés; Wiff, Rodrigo; Ganias, Konstantinos; Marshall, C. Tara
- ItemBayesian modeling of individual growth variability using back-calculation: Application to pink cusk-eel (Genypterus blacodes) off Chile(2018) Contreras-Reyes, Javier E.; Lopez Quintero, Freddy O.; Wiff, Rodrigo
- ItemChanges in the size-structure of a multispecies pelagic fishery off Northern Chile(2015) Canales, Mariella T.; Law, Richard; Wiff, Rodrigo; Blanchard, Julia L.
- ItemChilean fishing law, maximum sustainable yield and the stock-recruitment relationship(2016) Wiff, Rodrigo; Quiróz, J. C.; Neira, Sergio; Gacitúa, Santiago; Barrientos, Mauricio A.
- ItemEstimating consumption to biomass ratio in non-stationary harvested fish populations(2015) Wiff, Rodrigo; Roa Ureta, Ruben H.; Borchers, David L.; Milessi, Andrés C.; Barrientos, Mauricio A.
- ItemEstimating steepness of the stock-recruitment relationship in Chilean fish stocks using meta-analysis(2018) Wiff, Rodrigo; Flores, Andrés; Neira, Sergio; Caneco, Bruno
- ItemEstimation of natural mortality in two demersal squat lobster species off Chile(2019) Canales, T. Mariella; Wiff, Rodrigo; Quiroz, Juan Carlos; Queirolo, Dante
- ItemFlexible Bayesian analysis of the von Bertalanff growth functions with the us of a log-skew-t distributions(2017) López, Freddy; Contreras, Javier; Wiff, Rodrigo; Arellano Valle, Reinaldo Boris
- ItemHighest catch of the vulnerable broadnose sevengill shark Notorynchus cepedianus in the south-west Atlantic(2018) De Wysiecki, A.M.; Milessi, A.C.; Wiff, Rodrigo; Jaureguizar, A.J.
- ItemIncorporating sea surface temperature into the stock-recruitment relationship: Applications to jack mackerel (Trachurus murphyi) off Chile(2016) Espíndola, Fernando; Quiroz, Juan Carlos; Wiff, Rodrigo; Yáñez Rodríguez, Eleuterio
- ItemModelling production per unit of food consumed in fish populations(2015) Wiff, Rodrigo; Barrientos, Mauricio A.; Milessi, Andrés C.; Quiroz, J. C.; Harwood, John
- ItemOtolith shape as a stock discrimination tool for ling (Genypterus blacodes) in the fjords of Chilean Patagonia(2020) Wiff, Rodrigo; Flores, Andrés; Segura, Ángel M.; Barrientos, Mauricio A.; Ojeda, Vilma
- ItemPopulation structure and distribution of deep-water cardinal fish Epigonus occidentalis (Epigonidae) and Epigonus pandionis (Epigonidae) in the Colombian Caribbean Sea(2017) Paramo, J.; Fuentes, D.; Wiff, Rodrigo
- ItemPotential effects of bycatch from the squat lobster fisheries in central Chile on the benthic ecosystem : a survey data approach(2020) Montero Styles, José Tomás; Flores, A.; Queirolo, D.; Farias Piccolini, Ariel Alejandro; Wiff, Rodrigo; Lima Arce, Mauricio; Rivera Rebella, Carla Natalia; Ahumada, M.
- ItemReproductive biology and population structure of white warehou Seriolella caerulea and silver warehou Seriolella punctata in the austral zone off Chile(2019) Chong, L.; Flores, A.; Quiroz, J. C.; Contreras, F.; Wiff, Rodrigo
- ItemReproductive biology of female cardinalfish, Epigonus crassicaudus de Buen, 1959(2015) Flores, A.; Wiff, Rodrigo; Díaz, E.; Gálvez, P.
- ItemReproductive ecology of the female pink cusk-eel (Genypterus blacodes): evaluating differences between fishery management zones in the Chilean austral zone(SPRINGER, 2014) Baker, Laurie L.; Wiff, Rodrigo; Quiroz, J. C.; Flores, Andres; Cespedes, Renato; Barrientos, Mauricio A.; Ojeda, Vilma; Gatica, ClaudioThe pink cusk-eel (Genypterus blacodes), a benthic-demersal fish confined to the southern hemisphere, supports an important commercial fishery in Chile where it is exploited over an extensive geographic area. Although the fishery was originally divided into a northern (41A(0)28'aEuro"47A(0)00'S) and southern (47A(0)00'aEuro"57A(0)00'S) zone for the purposes of fisheries management, recent studies have reported significant differences in life history parameters between these zones. Individuals from the southern zone reached larger asymptotic sizes and possessed higher survival rates compared to the northern zone. We estimate and compare the gonadosomatic index (GSI), shape of the maturity ogive, and length at 50 % maturity (L (50%)) of female G. blacodes between management zones and across time using biological data collected from the industrial fleet between 1985 and 2009. Females in the northern zone had higher monthly mean GSI than females in the southern zone. Our analyses also revealed L (50%) to be significantly higher in the southern zone than in the northern zone from 1985 to 2009. The significant differences in life-history traits between fishery management zones agree with the trade-offs predicted by Charnov's life history theory. Together these results provide additional support for the hypothesis that two separate stocks exist and suggest that females from the northern zone have developed a life-history strategy, which favours early maturation and a proportionally greater investment in reproduction than females from the southern zone.