Seasonal changes in otolith and somatic growth in age-0 Pacific saury Cololabis saira

Suyama, Satoshi; Oshima, Kazuhiro; Nakagami, Masayasu; Kawabata, Akiko

doi:10.1007/s12562-011-0324-0

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…The right otolith was embedded in epoxy resin and the incidence of an annual ring determined using light microscopy following Suyama et al (2012a, b). Because formation of the annual ring commences in September (Suyama et al 2011) and is completed by the spring of the following year, during our survey period age-1 fish already had an annual ring (Suyama et al 2012a, b). After annual ring identification, the radius of the ring (ROA) was measured from the otolith core to the area where ring formation commenced.…”

Section: Age Determination and Otolith Radius Measurementmentioning

confidence: 99%

“…The minimum BL of spawning fish collected from Japanese fishing grounds is about 25 cm (Hatanaka 1955); however, individuals collected outside the fishing grounds or season can spawn at about 20 cm (Hotta 1960;Kosaka 2000;Sugama 1957). Based on their body length, these smaller fish could be age-0 (Kurita et al 2004;Nakaya et al 2010;Nemoto et al 2001;Suyama et al 1992Suyama et al , 1996Suyama et al , 2011Watanabe et al 1988) -that is, they have commenced spawning within 1 year of hatching. Minimum maturation size seems to vary according to spawning area and month.…”

Section: Biologymentioning

confidence: 99%

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Geographical variation in spawning histories of age-1 Pacific saury Cololabis saira in the North Pacific Ocean during June and July

et al. 2019

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We examine geographical differences in percentages of age-1 Pacific saury Cololabis saira with previous spawning experience collected from 143°E to 165°W during June and July of 2013 and 2014. Previous spawning experience of fish was determined using a new histological method involving Victoria blue (VB)-positive ovarian arterioles. We also compared the radius of the otolith annual ring (ROA), which indicates fish body size at the beginning of the breeding season, with the incidence of previous spawning experience. A generalized linear model was used that treats the occurrence of fish with VBpositive arterioles as a response variable, following the Bernoulli distribution of probability p i , where longitude, latitude, body length, ROA in age-1 fish, year (2013 or 2014), sea surface temperature, and days elapsed from a survey starting date, are used as fixed effect terms. An estimated regression coefficient of longitude was negative while that of ROA was positive, meaning that the probability of previous spawning increases with a latitudinal progression west, and with increased ROA. Our results suggest that differences in the percentage of previously spawned fish in different geographic areas are caused by differences in body length at the beginning of the breeding season.

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Section: Age Determination and Otolith Radius Measurementmentioning

confidence: 99%

Section: Biologymentioning

confidence: 99%

Geographical variation in spawning histories of age-1 Pacific saury Cololabis saira in the North Pacific Ocean during June and July

et al. 2019

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“…Pacific saury is one of the most extensively studied species in the western North Pacific. Previous studies have clarified various aspects of their biology: for example, growth and survival during early life stages (Oozeki and Watanabe, ; Oozeki et al ., , ; Watanabe et al ., ; Suyama et al ., ), age and growth of juveniles and adults (Kosaka, ; Kurita et al ., ; Suyama et al ., ), feeding biology (Sugisaki and Kurita, ), distribution (Huang et al ., ; Tseng et al ., ), migration (Kosaka, ; Kurita et al ., ; Suyama et al ., ), reproduction (Kosaka, ; Kurita, , ), and climate impacts on population dynamics (Oozeki et al ., ; Tian et al ., , ), patchiness structure and mortality rate (Hayashi and Odate, ; Oozeki et al ., ). In addition, Pacific saury is a major species used in bioenergetics models of fish growth and population dynamics in the western North Pacific (Ito et al ., , , ; Kishi et al ., , ; Mukai et al ., ; Werner et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Occurrence and density of Pacific saury Cololabis saira larvae and juveniles in relation to environmental factors during the winter spawning season in the Kuroshio Current system

Takasuka

Kuroda

Okunishi

et al. 2014

Fisheries Oceanography

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The occurrence and density of Pacific saury Cololabis saira larvae and juveniles were examined in relation to environmental factors during the winter spawning season in the Kuroshio Current system, based on samples from extensive surveys off the Pacific coast of Japan in 2003–2012. Dense distributions of larvae and juveniles were observed in areas around and on the offshore side of the Kuroshio axis except during a large Kuroshio meander year (2005). The relationships of larval and juvenile occurrence and density given the occurrence to sea surface temperature (SST), salinity (SSS), and chlorophyll‐a concentration (CHL) were examined by generalized additive models for 10‐mm size classes up to 40 mm. In general, the optimal SST for larval and juvenile occurrence and density given the occurrence was consistently observed at 19–20°C. The patterns were more complex for SSS, but a peak in occurrence was observed at 34.75–34.80. In contrast, there were negative relationships of occurrence and density given the occurrence to CHL. These patterns tended to be consistent among different size classes, although the patterns differed for the smallest size class depending on environmental factors. Synthetically, the window for spawning and larval and juvenile occurrence and density seems to be largely determined by physical factors, in particular temperature. The environmental conditions which larvae and juveniles encounter would be maintained while they are transported. The survival success under the physically favorable but food‐poor conditions of the Kuroshio Current system could be key to their recruitment success.

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“…For example, the autumn‐spawned larvae experience higher temperatures and the spring‐spawned larvae experience lower temperatures than the winter‐spawned larvae (Iwahashi et al ., ). Growth and migration of juvenile to adult stages have been studied intensively including their seasonality (Suyama et al ., , , , ). Ito et al .…”

Section: Discussionmentioning

confidence: 99%

“…For example, the autumn-spawned larvae experience higher temperatures and the spring-spawned larvae experience lower temperatures than the winterspawned larvae (Iwahashi et al, 2006). Growth and migration of juvenile to adult stages have been studied intensively including their seasonality (Suyama et al, 1996(Suyama et al, , 2011(Suyama et al, , 2012. Ito et al (2007) demonstrated that the smallest inter-annual variability of adult wet weight occurred from the winter-spawned cohort among different seasonal cohorts using a bioenergetics growth model; however, larval growth was not carefully tested in the model.…”

Section: Discussionmentioning

confidence: 99%

Growth variability of Pacific saury Cololabis saira larvae under contrasting environments across the Kuroshio axis: survival potential of minority versus majority

Takasuka

Kirara

Kuroda

et al. 2016

Fisheries Oceanography

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Growth variability was examined for Pacific saury Cololabis saira larvae under contrasting environments across the Kuroshio axis, based on samples collected during the winter spawning season in 2013 and 2014. The growth rate index (residual of the otolith marginal 3‐day mean increment width from the linear regression on knob length) of larvae was compared among three areas: the inshore side of the Kuroshio axis, the Kuroshio axis, and the offshore side of the Kuroshio axis in relation to sea surface temperature (SST), salinity (SSS) and chlorophyll‐a (CHL) concentration. The larvae were more densely distributed in the Kuroshio axis and offshore areas of higher temperature and salinity and lower chlorophyll‐a concentration than in the inshore areas of lower temperature and salinity and higher chlorophyll‐a concentration. No marked differences in the growth rate index were found among the three areas, even though the larvae in the inshore areas showed slightly higher growth rates in 2013. Despite the broad ranges of environmental factors, no clear relationship between the growth rate index and any environmental factor was detected. The survival potential of Pacific saury larvae was considered to be at least comparable under contrasting environments across the Kuroshio axis. Such a geographical homogeneity is concluded to be attributable to compensable effects of physical and biological factors. We hypothesize that the minority under physically‐unfavorable but biologically‐favorable conditions on the inshore side of the Kuroshio axis could survive equally well as the majority under physically‐favorable but biologically‐unfavorable conditions around the Kuroshio axis and on the offshore side of the Kuroshio axis.

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Seasonal changes in otolith and somatic growth in age-0 Pacific saury Cololabis saira

Abstract: We evaluated the seasonal changes in otolith

Cited by 9 publications

References 12 publications

Geographical variation in spawning histories of age-1 Pacific saury Cololabis saira in the North Pacific Ocean during June and July

Geographical variation in spawning histories of age-1 Pacific saury Cololabis saira in the North Pacific Ocean during June and July

Occurrence and density of Pacific saury Cololabis saira larvae and juveniles in relation to environmental factors during the winter spawning season in the Kuroshio Current system

Growth variability of Pacific saury Cololabis saira larvae under contrasting environments across the Kuroshio axis: survival potential of minority versus majority

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