Distribution, growth and survival of anchovy larvae (Engraulis encrasicolus L.) in relation to hydrodynamic and trophic environment in the Bay of Biscay

Cotano, Unai; Irigoien, Xabier; Etxebeste, Egoitz; Álvarez, Paula; Zarauz, L.; Mader, Julien; Ferrer, Luis Gabriel

doi:10.1093/plankt/fbn011

Cited by 39 publications

(36 citation statements)

References 31 publications

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“…The average growth rate estimated by the logistic model during the larval stage (for larvae younger than 30 days old) is 0.6 mm day -1 . This value is similar to those observed by Cermeño et al (2008) and Cotano et al (2008) in the same area, which estimated a mean growth during the larval stage of 0.65 and 0.61 mm day -1 respectively. Furthermore, the mean growth rate calculated in this study is within the range of 0.40 to 1.0 mm day -1 reported for this species in Mediterranean waters (Palomera et al, 1988(Palomera et al, , 2007García and Palomera, 1996;Dulčić, 1997;García et al, 2003).…”

Section: Discussionsupporting

confidence: 92%

“…Anchovy larvae and juveniles were sampled during their growth season in summer-autumn. The surveys covered the potential larvae and juvenile distribution areas between the Spanish coast and the continental shelf off Gironde (Irigoien et al, 2007;Cotano et al, 2008).…”

Section: Sample Collectionmentioning

confidence: 99%

“…Juveniles were caught by purse seines (400 m in perimeter, 75 m height and 4 mm mesh size) and pelagic trawl nets (4 mm mesh size in the cod end), and frozen after being measured to the nearest mm for standard length (SL) on board. The surveys and sampling details are described fully in Cotano et al (2008) and Irigoien et al (2008).…”

Section: Sample Collectionmentioning

confidence: 99%

“…Several studies have previously described larval growth of this species based on length at age data (Palomera et al, 1988;García et al, 2003;Cotano et al, 2008). Nevertheless, studies that include both larval and juvenile stages are scarce in the literature and they do not address the issue of growth modelling (Allain et al, 2003;Wilhelm et al, 2005;Cermeño et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Growth of young-of-the-year European anchovy (<i>Engraulis encrasicolus</i>, L.) in the Bay of Biscay

2010

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SUMMARY: Otolith daily increment analysis was used to describe the first growth season of young-of-the-year anchovy (Engraulis encrasicolus L.) in the Bay of Biscay. Anchovy larvae and juveniles were sampled during their growth season over a three year period (2004, 2005 and 2006). A logistic curve was fitted to the length at age data. At the end of the first year of growth, length was 168.3 mm, with a maximum growth rate of 1.85 mm day -1 for 73 days after hatching. Moreover, a Gompertz growth model was applied to estimate otolith growth parameters. At the end of the first year the otolith radius was 1759 µm, with a maximum growth increment of 22.19 µm day -1 observed 56 days after hatching. Standard length and otolith radius were closely related; however, this relationship showed a characteristic change from exponential in the larval stage to linear in the juvenile stage.Keywords: Bay of Biscay, early life stage, European anchovy, fish length-otolith radius relationship, growth, otolith. RESUMEN: Crecimiento de la anchoa europea (Engraulis Encrasicolus, L.) en el golfo de Bizkaia durante las etapas tempranas de su ciclo de vida. -Este trabajo describe el crecimiento de las etapas tempranas del ciclo de vida de la anchoa europea (Engraulis encrasicolus L.) en el golfo de Bizkaia mediante el análisis de la microestructura de los otolitos. Se capturaron larvas y juveniles de anchoa durante su periodo de crecimiento en tres años (2004, 2005 y 2006). El modelo de crecimiento logístico se ajustó a los datos de las tallas por edad. Al final del primer año de crecimiento, la talla estimada para la anchoa fue de 168.3 mm, con una tasa máxima de crecimiento de 1.85 mm día -1 a los 73 días después de la eclosión. Además, se aplicó el modelo de crecimiento Gompertz para estimar los parámetros de crecimiento del otolito. Al final del primer año, el radio estimado del otolito fue de 1759 µm, y la tasa de crecimiento máxima de 22.19 µm día -1 se obtuvo a los 56 días después de la eclosión. Se observó una estrecha relación entre la longitud estándar y el radio del otolito; sin embargo, mientras que en la fase larvaria dicha relación es exponencial, en el caso de los juveniles, pasa a ser lineal.Palabras clave: anchoa europea, crecimiento, etapas tempranas, golfo de Bizkaia, otolito, relación longitud estándar-radio del otolito.

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Section: Discussionsupporting

confidence: 92%

Section: Sample Collectionmentioning

confidence: 99%

Section: Sample Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth of young-of-the-year European anchovy (<i>Engraulis encrasicolus</i>, L.) in the Bay of Biscay

2010

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“…Spatial differences between juvenile presence and egg abundances suggest that essential juvenile habitat might differ from essential spawner habitat. Spawning areas are com- monly characterized by productivity-inducing oceanic processes such as upwelling and riverine plumes (Bergeron 2004), and current systems that lead eggs, larvae and their prey to appropriate nursery areas (Cotano et al, 2008). On the other hand, nursery grounds are in general retention areas (Katara 2014).…”

Section: Discussionmentioning

confidence: 99%

Essential habitat for sardine juveniles in Iberian waters

et al. 2017

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Summary:In a period when the Iberian sardine stock abundance is at its historical minimum, knowledge of the sardine juvenile's distribution is crucial for the development of fishery management strategies. Generalized additive models were used to relate juvenile sardine presence with geographical variables and spawning grounds (egg abundance) and to model juvenile abundance with the concurrent environmental conditions. Three core areas of juvenile distribution were identified: the Northern Portuguese shelf (centred off Aveiro), the coastal region in the vicinity of the Tagus estuary, and the eastern Gulf of Cadiz. Spatial differences in the relationship between juvenile presence and egg abundances suggest that essential juvenile habitat might partially differ from the prevailing spawning grounds. Models also depicted significant relationships between juvenile abundance, temperature and geographical variables in combination with salinity in the west and with zooplankton in the south. Results indicate that the sardine juvenile distribution along the Iberian Peninsula waters are an outcome of a combination of dynamic processes occurring early in life, such as egg and larva retention, reduced mortality and favourable feeding grounds for both larvae and juveniles.Keywords: Portuguese coast; Gulf of Cadiz; acoustic survey; fish habitat; Sardina pilchardus; juveniles; fisheries management. Hábitat esencial para los juveniles de sardina en aguas IbéricasResumen: En un periodo de mínimo histórico para el stock de sardina ibérica, el conocimiento de la distribución de los juveniles de sardina resulta crucial para el desarrollo de estrategias de gestión pesquera. Se usaron modelos aditivos generalizados para relacionar la presencia de los juveniles de sardina con las variables geográficas y las principales zonas de desove (abundancia de huevos) y a su vez para relacionar la abundancia de los juveniles con las condiciones ambientales adyacentes. Se identificaron tres zonas centrales: la plataforma norte portuguesa (centrada enfrente de la localidad de Aveiro), la zona costera próxima al estuario del Tajo y la parte este del golfo de Cádiz. Las diferencias espaciales encontradas en la relación entre la presencia de juveniles y la abundancia de huevos sugieren que el hábitat esencial de los juveniles puede diferir parcialmente de las zonas de desove existentes. Los modelos también señalaron relaciones significativas entre la abundancia de juveniles, la temperatura, y las variables geográficas combinadas con la salinidad en el oeste y con el zooplancton en el sur. Los resultados indican que la distribución de los juveniles de sardina a lo largo de las aguas de la Península Ibérica resulta de la combinación de procesos dinámicos que se dan en edades tempranas, cómo la retención de huevos y larvas, una mortalidad reducida y zonas de nutrición con condiciones favorables tanto para larvas cómo para juveniles.Palabras clave: costa portuguesa; golfo de Cádiz; campaña acústica; hábitat de peces; Sardina pilchardus; juveniles; gestión ...

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Intraguild predation between small pelagic fish in the Bay of Biscay: impact on anchovy (Engraulis encrasicolus L.) egg mortality

Bachiller

Cotano²,

Ibaibarriaga³

et al. 2015

Mar Biol

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Distribution, growth and survival of anchovy larvae (Engraulis encrasicolus L.) in relation to hydrodynamic and trophic environment in the Bay of Biscay

Cited by 39 publications

References 31 publications

Growth of young-of-the-year European anchovy (<i>Engraulis encrasicolus</i>, L.) in the Bay of Biscay

Growth of young-of-the-year European anchovy (<i>Engraulis encrasicolus</i>, L.) in the Bay of Biscay

Essential habitat for sardine juveniles in Iberian waters

Intraguild predation between small pelagic fish in the Bay of Biscay: impact on anchovy (Engraulis encrasicolus L.) egg mortality

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