Age, growth, and mortality of the mullet Mugil liza in Brazil's southern and southeastern coastal regions

Garbin, Thais; Castello, Jorge Pablo; Kinas, Paul Gerhard

doi:10.1016/j.fishres.2013.09.008

Cited by 35 publications

(23 citation statements)

References 13 publications

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“…Despite those authors, the contribution of organic matter registered in the sediments in this present study was among the lowest detected for the stomach content of mugilids [8-31% for Mugil liza (ACHA, 1990); 5.9-9.8% for Mugil cephalus (ODUM, 1970); 5-30% for Chelon labrosus (HICKLING, 1970)]. The small contribution of organic matter in the sediments and lower condition factors than those described for northern populations of M. liza during summer (GARBIN et al, 2014) may be indicative of the nutritional condition of this species at the southern limit of its distributional range.…”

Section: Discussioncontrasting

confidence: 58%

“…Mugil liza is a species found in the coastal waters extending from Rio de Janeiro (Brazil) to Argentina, being most common in the South of São Paulo State and in estuarine regions of Lagoa dos Patos, Río de La Plata, Samborombón Bay and Mar Chiquita (COUSSEAU et al, 2005;ACUÑA PLAVAN et al, 2010;FISCHER et al, 2011;LORENZO et al, 2011;GARBIN et al, 2014 Information on the life history of the Mugillidae family is available only at the local level, there being no global view (WHITFIELD et al, 2012); mullet larval stages feed on plankton in the marine environment and a month after they reach the postflexion larval stage they migrate to the coast; juvenile and sub-adult stages develop in estuarine waters and change their diet from planctophagous to detritivorous, feeding mainly on detritus and benthic microalgae (DE SILVA, 1980). Adults migrate to open water to spawn and complete their cycle, and evidence suggests that there are no changes in the diet with the increase in the size of the body.…”

Section: Introductionmentioning

confidence: 99%

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Trophic ecology of Mugil liza at the southern limit of its distribution (Buenos Aires, Argentina)

et al. 2015

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In order to get to know the habitat and feeding habits of Mugil liza on the southern coast of Buenos Aires province, 65 specimens obtained at two sampling sites - the San Blas bay (SBB) and the mouth of the Quequén-Salado river (QSR) - during spring (November 2012) and summer (February 2013) were analyzed. Specimens were measured, sexed and weighed, their stomachs were removed and their stomach contents weighed and analyzed under the stereoscopic microscope. The specimens were adults, 28-49 cm in length and weighing 380-1100 g. Population growth was higher in the SBB (TW: 0.003*TL3.36), than in RQS (TW: 0.045*TL2.61). About 98% of the stomachs had some content, their repletion rate being of between 0.4 and 1.2%. About 75% of the stomachs contained very fine sand with few benthic organisms (algae, copepods, foraminifera), whereas the remaining 25% of stomachs contained coarse sand and a greater presence of benthic fauna (amphipods, bivalves, gastropods and coral organisms). The linear relationship between the weight of stomach contents and the total weight and length of the fish showed that the rates of growth (slope) were the same at both sites, but intercept values were significantly higher for San Blas bay (test parallelism; p < 0.001).

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Section: Discussioncontrasting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Trophic ecology of Mugil liza at the southern limit of its distribution (Buenos Aires, Argentina)

et al. 2015

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“…4 years (for samples collected between 32° and 26° S; Garbin et al . ; Lemos et al ., ). Mugil liza eggs and larvae are neustonic, but before recruitment to the estuarine environment, juveniles under 30 mm L T temporarily occupy surf zones (Rodrigues et al ., ; Vieira, ).…”

Section: Introductionmentioning

confidence: 99%

Coastal zone use and migratory behaviour of the southern population of Mugil liza in Brazil

Albuquerque

Lemos

et al. 2019

Journal of Fish Biology

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We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of Mugil liza in Brazil (Paraná to Rio Grande do Sul) to investigate its coastal zone use and migratory behaviour. All individual M. liza analysed had Sr:Ca and Ba:Ca values indicating that their birth was in the marine environment, which is consistent with the southern population migration to spawn in the ocean,. Juveniles exhibited at least three coastal use and recruitment strategies (contingents): the majority (89%) of M. liza juveniles migrated toward brackish water. They entered the estuary before completing the first year of life (64%) or after (25%) their first year of life. The remaining 11% did not appear to enter brackish or freshwater water as a nursery or at any point in their life cycle. Some adults returned to the estuary after spawning in the ocean but others (of both sexes) never returned to the estuary after spawning, remaining in the marine environment. The pattern of juvenile habitat use in the Brazilian southern population of M. liza seems to be recurrent throughout the extent of its distribution as a consequence of the reproductive spawning aggregation behaviour, which mixes all contingents (with marine or estuarine preferences).

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“…Because of the high value of mullet gonads in the international market, the industrial and artisanal fisheries have directed their fishing effort towards supplying these markets (Pina and Chaves 2005. Furthermore, these efforts are mainly applied on highly aggregated schools during the reproductive migration (Vieira et al 2008, Garbin et al 2014, thus posing a significant threat to conservation and sustainability.…”

Section: Introductionmentioning

confidence: 99%

Bayesian state-space models with multiple CPUE data: the case of a mullet fishery

et al. 2017

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Summary:We propose a novel Bayesian hierarchical structure of state-space surplus production models that accommodate multiple catch per unit effort (CPUE) data of various fisheries exploiting the same stock. The advantage of this approach in data-limited stock assessment is the possibility of borrowing strength among different data sources to estimate reference points useful for management decisions. The model is applied to thirteen years of data from seven fisheries of the lebranche mullet (Mugil liza) southern population, distributed along the southern and southeastern shelf regions of Brazil. The results indicate that this modelling strategy is useful and has room for extensions. There are reasons for concern about the sustainability of the mullet stock, although the wide posterior credibility intervals for key reference points preclude conclusive statistical evidence at this time.Keywords: hierarchical models; MCMC; multiple fisheries; data-limited; stock assessment; Mugil liza.Modelos bayesianos espacio-temporales con datos múltiples de CPUE: el caso de una pesquería de lebranche Resumen: Proponemos una nueva estructura jerárquica bayesiana para modelos de producción excedente espacio-temporales que permite incorporar datos de captura por unidad de esfuerzo (CPUE) de diversas fuentes para varias pesquerías que explotan el mismo stock. La ventaja de este enfoque en la evaluación de stocks con datos limitados es la posibilidad de reforzar las estimaciones a partir de diferentes fuentes de datos para estimar puntos de referencia útiles para las decisiones de gestión. El modelo se aplica a trece años de datos de siete pesquerías de la población meridional de lebranche (Mugil liza), distribuidas a lo largo de las regiones sur y sudeste de Brasil. Los resultados indican que esta estrategia de modelado es útil y puede formar la base de futuras extensiones. En cuanto a la sostenibilidad del efectivo de lebranche, hay razones para preocuparse, aunque los amplios intervalos de credibilidad posterior en los puntos clave de referencia excluyen evidencia estadística concluyente en este momento.Palabras clave: modelos jerárquicos; MCMC; pesquerías múltiples; datos limitados; evaluación de stocks; Mugil liza. Citation/Como citar este artículo: Sant'Ana R., Kinas P.G., Miranda L.V., Schwingel P.R., Castello J.P., Vieira J.P. 2017. Bayesian state-space models with multiple CPUE data: the case of a mullet fishery. Sci. Mar. 81(3): 361-370. doi: http://dx

show abstract

Age, growth, and mortality of the mullet Mugil liza in Brazil's southern and southeastern coastal regions

Cited by 35 publications

References 13 publications

Trophic ecology of Mugil liza at the southern limit of its distribution (Buenos Aires, Argentina)

Trophic ecology of Mugil liza at the southern limit of its distribution (Buenos Aires, Argentina)

Coastal zone use and migratory behaviour of the southern population of Mugil liza in Brazil

Bayesian state-space models with multiple CPUE data: the case of a mullet fishery

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