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    Larval growth and condition of Sardinella brasiliensis (Steindachner, 1879): laboratory studies on otolith microstructure, RNA/DNA ratio and tryptic enzyme activity, preliminary results (1999)
    Japan International Cooperation Agency JICA
    In:  In: Avances en métodos y tecnología aplicados a la investigación pesquera. Seminario final del Proyecto INIDEP-JICA sobre evaluación y monitoreo de recursos pesqueros 1994-1999. Japan International Cooperation Agency JICA, Buenos Aires, Argentina, pp. 101-105. ISBN 987-96244-3-2
    Details
    Publication Date: 2017-05-17
    Type: Book chapter , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Book chapter
  • 2
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    Squid stock fluctuations and water temperature: temporal analysis of English Channel Loliginidae (1999)
    Wiley
    In:  Journal of Applied Ecology, 36 (1). pp. 101-110.
    Details
    Publication Date: 2021-06-11
    Description: 1. Monthly series of abundance indexes for the English Channel squid stock, based on fishery statistics of the United Kingdom (1980–93) and France (1986–96), were compared with water temperature data. The two objectives of the study were to test empirical predictive models and to analyse the stock–environment relationship at various time scales; both correlation and time-series statistical techniques were applied. Sea surface temperature (SST) showed inter-annual fluctuations and month-to-month auto-correlation in addition to the annual cycle. 2. Trends in squid landings and temperature at the annual scale were found to be related, whatever the statistical method used (moving averages, cumulative functions or regression using averaged data). 3. Variable selection applied in a ‘multi-month’ model suggested that fishing season indexes could be predicted from temperatures observed in the previous winter. The link between mild winter conditions and cohort success in winter/spring spawning species suggested that early life survival (and/or growth) was involved. This empirical model is a first step in the development of environment-predicted recruitment indexes useful for management advice. 4. Seasonal decomposition was performed on both the squid resource data and SST data in search of short-term relationships. In spite of the flexibility of the loliginid life-cycle, no significant relationship was found between squid seasonally adjusted indexes and temperature anomalies in the previous months. This underlined the conclusion that temperature effect on cohort success was not constant throughout the year.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1046/j.1365-2664.1999.00384.x
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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