Growth model of the reared sea urchin Paracentrotus ... - SciViews

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Annexes KEYWORDS: Sea urchin, aquaculture, closed-circuit system, growth, CO2. 8 th International Echinoderm Conference, Dijon, 1993. Poster. Ph. Grosjean & M. Jangoux. Effect of light on feeding in cultivated echinoids (Paracentrotus lividus). ABSTRACT: Within the context of a research on sea urchin cultivation (Paracentrotus lividus), the effect of light on the amount of food ingested and of faeces produced per echinoid per day has been investigated. Three sets of 20 adults were subjected to particular light conditions (constant light, constant darkness or 12 hours of light per day) for 6 days. Measurements were done for each of the 60 investigated echinoids. Calculation of the mean daily feeding and absorption rates for each set of individuals indicates that the highest values were obtained for echinoids at constant darkness and the lowest for echinoids subjected to light/darkness alternation (values for the three sets of individuals are significantly different). KEYWORDS: Echinoid, feeding rate, absorption rate, light, photoperiod. 271
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U L B bio mar UNIVERSITE LIBRE DE B
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Acknowledgements ACKNOWLEDGEMENTS W
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Abstract ABSTRACT A rearing protoco
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Résumé RESUME Un protocole d'éle
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Table of contents TABLE OF CONTENTS
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ANNEXES............................
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List of figures LIST OF FIGURES Fig
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List of figures Figure 28. A. Histo
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List of tables LIST OF TABLES Table
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List of equations LIST OF EQUATIONS
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List of equations Equation 33. Para
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List of symbols LIST OF SYMBOLS Var
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List of symbols IW Immersed weight:
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Introduction 27
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Foreword 30
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General introduction this study. Se
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General introduction intense fishin
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General introduction habitats: inte
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General introduction substrate to s
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General introduction mm (Spirlet et
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Growth models General introduction
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. The logistic function for asympto
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d. The von Bertalanffy curves Gener
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Y Y 1 Y• 0.8 0.6 0.4 0.2 General
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Y 1 Y• 0.8 0.6 Y•êH1+bL 0.4 0.
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YY 3 2.5 2 1.5 1 0.5 General introd
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Table 1. Models used to fit sea urc
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General introduction model 1 for Ec
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General introduction method used. I
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General introduction Experiments in
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Aim of the thesis 62
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PART I: SET UP OF AN EXPERIMENTAL R
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Land-based closed-cycle echinicultu
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Aquaculture of echinoderms, includi
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6b. exploitation KCl water renewal
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earing cycle into seven stages is e
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(Grosjean et al, 1996, see Part III
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output. The quality of gametes is o
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average value of 19.5 days, a minim
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individuals were still alive 3 mont
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e. Discussion show similar GI and M
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The success of the present method l
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Fenaux (1990) for the same species
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encountered with food is its stabil
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to Christine Spirlet (ref. ERB 4001
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PART II Measurement for size in the
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Part II: Measurement for size in th
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Few studies have compared and discu
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d. Results and discussion The ambit
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Reproducibility of measurements The
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e. Conclusions fresh weight! Cautio
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principal axis 3 1 0.8 0.6 0.4 0.2
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a relative homogeneous growth of al
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110
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Part III: Experimental studies of t
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assumption of normality can be test
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occurred. From this moment on, and
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d. Results Size distribution among
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Nber of ind. 120 100 80 60 40 20 0
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Table 9. Statistics on the six batc
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Table 10. Size distribution of Fe e
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purpuratus; Dafni & Tobol, 1987: Tr
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Nbr. of ind. Nbr. of ind. A. Size d
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Nbr. of ind. Nbr. of ind. Nbr. d'in
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Part III: Experimental studies of t
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134
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Part IV: A growth model with intras
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. Introduction fuzzy-remanent funct
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considered factor on the curve's sh
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Diameter D 20 in mm Diameter D in m
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d. Results Theoretical consideratio
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some two-dimensional processes like
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implements this method ('nlrq' pack
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value just after metamorphosis (D0,
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quantifies maximum speed growth, k2
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Table 12. Results of quantile regre
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This way, one obtains a 4-parameter
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individuals related to the presence
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Finally, ∆D∞ should follow a no
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60 Diameter increase D' in mm 40 20
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e. Discussion Fig. 34B shows three
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Constraining parameters as we did i
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It does not consider respiration as
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this species. For other species, wh
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ecapture, McDonald & Pitcher, 1979;
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∆D∞ D0 +∆D∞ − D0 +∆D∞
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evaluated on basis of biological kn
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ain conceptualizes complex objects.
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180
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General conclusions individuals, wh
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Root models: y’ = ay m -by n (exp
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General conclusions - The diauxic g
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General conclusions model not on a
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References Baker, T.T., R. Lafferty
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References Dafni, J. & R. Tobol, 19
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References Ebert, T.A., 1999. Plant
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References intermedius on a rocky s
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References Guillou, M. & Ch. Michel
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References Kobayashi, S. & J. Taki,
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References McDonald, P.D. & T.J. Pi
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References Pouvreau, S., C. Bacher
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References Sellem, F., H. Langar &
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References Stumm, W. & J.J. Morgan,
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References Webster, S.K. & A.C. Gie
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212
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Annexes 214
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# If no graphic device currently op
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lines(edatq[, 1], predict(edat.025,
Page 221 and 222: SimRes
Page 223 and 224: Annexes Code of functions required
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Page 247 and 248: . The 'nlrq' package for nonlinear
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Page 251 and 252: gradSetArgs[[2]]), call("[", gradSe
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Page 255 and 256: Annexes 254
Page 257 and 258: Annexes 256
Page 259 and 260: Annexes metamorphosis. Acquisition
Page 261 and 262: Annexes ABSTRACT: The general allom
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Page 265 and 266: Annexes EXECUTIVE SUMMARY: The aim
Page 267 and 268: Annexes KEYWORDS: Somatic growth, d
Page 269 and 270: Annexes amount of waste produced at
Page 271: Annexes ABSTRACT: Multimodal distri
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