chapter 3 - RiuNet

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CONCLUSIONS i. The foundations of a standardized and accurate method of assessing fish sperm quality through the CASA system have been established, allowing the comparison of both inter and intra laboratory sperm studies. ii. The spermiation process in European eel males was strongly affected both by temperature and hormonal factors, and an effective and economically profitable treatment was discovered, improving the reproducion performance of eel males. iii. A short-term sperm storage method for puffer fish sperm was developed, preserving the sperm quality parameters for a relatively long-term period (7 days) compared to fresh sperm samples. iv. Both the osmolality and the ion composition of the activation media had a significant impact on the sperm motion parameters, consequently playing an essential role in the initiation of the sperm motility of pufferfish and, probably, of other marine fish. v. The intracellular concentrations of Ca 2+ and K + increased upon sperm activation both in pufferfish and European eel, suggesting that these ions play an important role in the initiation of sperm motility, as occurs in other marine and freshwater teleosts. vi. The sperm/egg ratio and the sperm quality were strongly linked, suggesting that both should be taken into account as unique interrelated elements during in vitro fertilization trials. 135
CONCLUSIONS vii. The coefficients of correlation between all the sperm motion parameters provided by a CASA system and the fertilization and hatching rates were estimated for the first time in a marine species. Spermatozoa velocities showed the highest coefficients (≥0.80), suggesting that kinetics of spermatozoa is a key factor in fertilization trials. 136
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SPERM PHYSIOLOGY AND QUALITY IN TWO
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ACKNOWLEDGEMENTS Muchos años han p
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aunque tiene una alcachofa en la ca
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TABLE OF CONTENTS SUMMARY 1 RESUMEN
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SUMMARY SUMMARY The conservation st
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RESUMEN RESUMEN Las especies objeto
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RESUM RESUM Les espècies objecte d
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GENERAL INTRODUCTION 7
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GENERAL INTRODUCTION who postulated
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GENERAL INTRODUCTION 2. Sperm physi
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GENERAL INTRODUCTION Finally, the a
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GENERAL INTRODUCTION 3. Sperm quali
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GENERAL INTRODUCTION in fish (Kime
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GENERAL INTRODUCTION However, for s
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GENERAL INTRODUCTION future applica
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GENERAL INTRODUCTION With regards t
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OBJECTIVES The chapters presented b
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STANDARDIZATION OF SPERM MOTILITY E
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CHAPTER 2 Study of the effects of t
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CHAPTER 2 reducing the pressure on
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CHAPTER 2 ongoing task in order to
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CHAPTER 2 To measure sperm density,
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CHAPTER 2 Spermiating males (%) 100
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CHAPTER 2 100 80 60 I II III IV A 4
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CHAPTER 2 3.2 Hormonal treatments P
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CHAPTER 2 With regard to the sperm
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CHAPTER 2 Relative volume (%) 80 I
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CHAPTER 2 In this respect, it is we
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CHAPTER 2 treatment to that of the
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CHAPTER 2 Our results demonstrate t
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ROLE OF IONS IN THE SPERM ACTIVATIO
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Page 92: CHAPTER 4 Study of pufferfish (Taki
Page 95 and 96: CHAPTER 4 2002) so Takifugu niphobl
Page 97 and 98: CHAPTER 4 carrying out sperm collec
Page 99 and 100: CHAPTER 4 Table 1. Activation media
Page 101 and 102: CHAPTER 4 TM (%) 100 A a a Und-PD a
Page 103 and 104: CHAPTER 4 TM (%) 80 60 40 20 0 A a
Page 105 and 106: CHAPTER 4 TM (%) 80 A ASW100 GLU 60
Page 107 and 108: CHAPTER 4 although the activation m
Page 109 and 110: CHAPTER 4 dilution ratio and an opt
Page 111 and 112: CHAPTER 4 2006). Several studies in
Page 113 and 114: CHAPTER 4 5. Conclusions Some concl
Page 116 and 117: RELATIONSHIP BETWEEN SPERM MOTILIY
Page 130: RELATIONSHIP BETWEEN SPERM MOTILIY
Page 134 and 135: GENERAL DISCUSSION 1. Improvements
Page 136 and 137: GENERAL DISCUSSION profiles induced
Page 138 and 139: GENERAL DISCUSSION more studies on
Page 140 and 141: GENERAL DISCUSSION sperm motility p
Page 142: CONCLUSIONS 133
Page 148 and 149: REFERENCES Aarestrup K, Økland F,
Page 150 and 151: REFERENCES Beirão J, Cabrita E, P
Page 152 and 153: REFERENCES Cabrita E, Robles V, Cu
Page 154 and 155: REFERENCES De Vos A, Van De Velde H
Page 156 and 157: REFERENCES Gallego V, Pérez L, Ast
Page 158 and 159: REFERENCES sperm competition and fe
Page 160 and 161: REFERENCES Liu QH, Li J, Xiao ZZ, D
Page 162 and 163: REFERENCES Mortimer ST. Effect of i
Page 164 and 165: REFERENCES Peñaranda DS, Marco-Jim
Page 166 and 167: REFERENCES Rurangwa E, Volckaert FA
Page 168 and 169: REFERENCES Tesch F. Telemetric obse
Page 170 and 171: REFERENCES Wong PYD, Lee WM, Tsang
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