Contents
Préface
R. BILLARD 15
I. Reproduction o f pike in the wild
H. LELOUARN*
Natural reproduction in pike (Esox lucius L., 1758) ; a bibliographie review.
Y. SOUCHON 21
Reproduction of pike (Esox lucius L.) in some water bodies in the South of Québec.
R. FORTIN, P. DUMONT, H. FOURNIER 39
Progression of gametogenesis and of corporal and gonadal weight during the reproductive cycle of the pike Esox lucius.
R. BILLARD, W.C. MACKAY, Jacqueline MARCEL 53
Production of young northern pike families in small ponds from managed natural spawning : results from a three year experiment and comparison with the fry stocking method.
C. BRY, Y. SOUCHON, G. NEVEU, L. TREBAOL 63
II. Reproduction o f pike in hatchery
B. BRETON
Spontaneous ovulations in northern pike females stocked into small maturation ponds.
G. NEVEU, C. BRY 77
Efficiency of ovulation induced by gonadotropic treatment in a heterogeneous population of northern pike (Esox lucius) : relation to the oocyte stage, and comparison with the results of spontaneous ovulations.
Martine POUVREAU, G. MAISSE, B. JALABERT, B. BRETON 85
Hormonal induction of spawning, biosynthesis and plasma levels of ovarian steroids in pike (Esox lucius).
Claudia SIMONTACCHI, C. BOITI, Nadia BONALDO, Paola COLOMBOBELVEDERE,
L. COLOMBO 97
Stimulation of spermiation in pike (Esox lucius L.).
R. BILLARD, Jacqueline MARCEL, G. DEMONTALEMBERT 109
Expérimental data on the management and artificial insémination of pike gamètes.
Jacqueline MARCEL, G. DEMONTALEMBERT, R. BILLARD 133
Methods of producing eyed-eggs and sac fry of pike (Esox lucius L.) at the Tabor fish hatchery in Czechoslovakia.
O. PÉCHA 153
Incubation and hatching of pike eggs and larval yolk résorption.
A. CHAUVEHEID, R. BILLARD 163
III. The culture of pike fry
G. DEMONTALEMBERT
Natural food of pike fry during the first month of life.
G. BALVAY 179
The use of natural sites for the growth of hatchery-produced pike fry.
J.C. LUCCHETTA 199
An example of pike fry culture by a Départemental Fédération of Sport Fishing and Fish Farming Associations.
R. DAUPHIN 209
The management and production of pike (Esox lucius) in Hungarian waters.
L. HORVATH 215
Production and management of pike populations in West Germany.
M. Von LUKOWICZ 225
Evaluation of the level of intake and the rate of food transit in pike fry fed a compound feed.
P. LUQUET, J.F. LUQUET 235
The pathology of the pike (Esox lucius).
M. DORSON, P. DEKINKELIN, C. MICHEL 245
IV. The management o f pike populations in nature
J. ALLARDI
Régulation of the biomass of pike (Esox lucius L.) smaller than 41 cm and the effectiveness of introducing 4 to 6-cm long individuals.
M. P. GRIMM 253
Methods of pike management and rearing in Czechoslovakia.
J. VOSTRADOVSKY 271
Some aspects of pike biology and breeding in Italy.
G. ALESSIO 283
Natural reproduction and planting success in the river Seine near Montereau.
Sophie DESCLERS, J. ALLARDI 297
Pike production. The improvement of natural production or artificial stocking.
H. LELOUARN 305
V. Conclusions
A summary of some problems of pike rearing and its management in various environments.
R. BILLARD 321
VI. Supplementary plates
1. The pike at hatching 336
2. Pike sexing 338
3. Collection of brood pike 340
4. Collection of brood pike stocked in a winter pond 342
5. Artificial insémination of pike 344
6. Incubation in hatchery and its problems 346
7. The hatchery 348
8. Intervention in natural populations 350
9. Interventions in the natural environment 352
10. Pike activity and habitat 352
11. The fish-eating pike 356
12. The cannibal pike 357
List o f participants 367