Multiple cohorts of juvenile jack mackerel Trachurus japonicus in waters along the Tsushima Warm Current

Kanaji, Yu; Watanabe, Yoshirô; Kawamura, Tomohiko; Xie, Shuguang; Yamashita, Yoh; Sassa, Chiyuki; Tsukamoto, Youichi

doi:10.1016/j.fishres.2008.08.004

Cited by 26 publications

(24 citation statements)

References 17 publications

(18 reference statements)

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“…La temperatura no sólo determina la velocidad del crecimiento, también cambia el patrón de desarrollo, a menor temperatura el desarrollo se prolonga y viceversa, a temperaturas más altas se genera un inicio temprano de la alimentación exógena y la natación (Pörtner et al 2010). Un hábitat apropiado para el desarrollo larval, proporciona una temperatura óptima además de altos niveles de presas, lo cual permite un rápido desarrollo y una mayor probabilidad de supervivencia (Hunter & Kimbrell 1980, Werner 2002, Kanaji et al 2009). …”

Section: Discussionunclassified

Identificación de zonas propicias para el desarrollo larval de la macarela del Pacífico (Scomber japonicus) en la porción sur de la Corriente de California

Anaya-Godinez

Funes-Rodrı́guez

Hinojosa‐Medina

et al. 2019

Rev. biol. mar. oceanogr.

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Abstract.-Larval size is considered as an important variable to understand the changes in larval development and identification of a suitable environment for larval growth and survivor. Larvae of the Pacific mackerel (Scomber japonicus) have a slow growth during the early stages of development (6-8 mm SL); subsequently, the growth rate increases, but the development depends mainly on the temperature and food. The aim of this study was to identify the areas and seasons favorable for larval development of S. japonicus, in relation to the sea surface temperature and the zooplankton biomass, off the west coast of the Baja California Peninsula (~25°-32°N) from 2006 to 2010. Larvae of the Pacific mackerel showed the greatest amplitude in their spatial distribution during spring, but with greater restricted abundance compared to Punta Eugenia (~28°N) during summer. Changes in its distribution were influenced by geostrophic flow and thermal variability. Linear regression analysis allowed to identify areas favorable for larvae development, with a lower development in spring, related to a narrow range of temperatures and levels of comparatively low zooplankton biomass. In contrast, during summer the largest increase in body height () was related to a wide range of temperatures, while its low variability (standard error) coincided with high levels of zooplankton biomass. It is considered that thermal conditions and food availability, favor an optimum larval development, particularly during the summer season.Key words: Pacific mackerel, fish larvae, isometric growth, suitable areas, California CurrentResumen.-El tamaño larval es una variable importante para entender los cambios en el desarrollo y la identificación de un entorno adecuado para el crecimiento y la supervivencia larval. Las larvas de la macarela del Pacífico (Scomber japonicus) presentan un lento crecimiento durante las primeras fases del desarrollo (6-8 mm de LE); posteriormente, la velocidad de crecimiento aumenta, pero el desarrollo depende principalmente de la temperatura y del alimento. El objetivo del presente trabajo fue identificar las zonas y temporadas propicias para el desarrollo larval de S. japonicus, en relación a la temperatura superficial del mar y la biomasa del zooplancton, frente a la costa occidental de la Península de Baja California (~25-32°N) del 2006 al 2010. Las larvas de la macarela del Pacífico mostraron la mayor amplitud en su distribución espacial en primavera, pero con mayor abundancia restringida frente a Punta Eugenia (~28°N) durante el verano. Los cambios en su distribución, estuvieron bajo la influencia del flujo geostrófico y la variabilidad térmica. El análisis de regresión lineal permitió identificar zonas propicias para el desarrollo de larvas, con un menor desarrollo en primavera, relacionado con un int ervalo estrecho de temperaturas y niveles de biomasas del zooplancton comparativamente bajos. En contraste, durante el verano el mayor incremento en la altura del cuerpo () fue relacionado con un amplio intervalo de tempe...

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Section: Discussionunclassified

Identificación de zonas propicias para el desarrollo larval de la macarela del Pacífico (Scomber japonicus) en la porción sur de la Corriente de California

Anaya-Godinez

Funes-Rodrı́guez

Hinojosa‐Medina

et al. 2019

Rev. biol. mar. oceanogr.

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“…They estimated the specific growth rate of jack mackerel as 0.056. Kanaji et al (2009) reported that growth trajectories differ significantly among different cohorts of juveniles collected in Kunda Bay, Kyoto. Their estimated SL at 30 dph ranged from 5 to 18 mm, and the cohort spawned in June and July attained 10 mm SL at 30 dph, which was very close to the result in the present work.…”

Section: -4 Discussionmentioning

confidence: 99%

Behavioral Ontogeny of Marine Pelagic Fishes with the Implications for the Sustainable Management of Fisheries Resources

Masuda¹

2009

Aqua-BioSci. Monogr. (ABSM)

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“…In preceding studies, larvae less than 10 mm total length (TL) were sampled over extensive areas from west of Kyushu to Wakasa Bay in April to May 1953-1956(Kazihara and Yamada 1958Fukataki 1960). More recently, larvae less than 4 mm notochord length (NL) were sampled during May in inner Wakasa Bay (Kanaji et al 2009). In September to October, larvae less than 10 mm TL were sampled from the Gotonada Sea through the Tsushima Strait to around the Oki Islands, especially constantly in the Goto-nada Sea and the Tsushima Strait in 1953-1956(Kazihara and Yamada 1958Fukataki 1960;Fig.…”

Section: Ecomorphological Aspects Of the Juvenile Dimorphismmentioning

confidence: 99%

“…In Wakasa Bay, a downstream embayment washed by the Tsushima Current ( Fig. 1), juveniles less than 100 mm SL are found all year round (e.g., Yamazaki 1985), and our research group recently elucidated the coexistence of multiple cohorts hatched in different seasons and waters forming a 0 year class in the bay (Kanaji et al 2009). Therefore, based on all things above, we can propose a hypothesis that juvenile (less than 100 mm SL) T. japonicus in Wakasa Bay exhibit "cohortspecific morphology" in body and fin characters, assumed to reflect the different developmental environments among cohorts (i.e., ecomorphological polymorphism).…”

Section: Introductionmentioning

confidence: 99%

Ecomorphological dimorphism of juvenile Trachurus japonicus in Wakasa Bay, Japan

et al. 2010

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Multiple cohorts of juvenile jack mackerel Trachurus japonicus in waters along the Tsushima Warm Current

Cited by 26 publications

References 17 publications

Identificación de zonas propicias para el desarrollo larval de la macarela del Pacífico (Scomber japonicus) en la porción sur de la Corriente de California

Identificación de zonas propicias para el desarrollo larval de la macarela del Pacífico (Scomber japonicus) en la porción sur de la Corriente de California

Behavioral Ontogeny of Marine Pelagic Fishes with the Implications for the Sustainable Management of Fisheries Resources

Ecomorphological dimorphism of juvenile Trachurus japonicus in Wakasa Bay, Japan

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