PREFACE

FORWARD

RESOLUTION

CONSERVATION OF AUTOCHTONE INVERTEBRATES

1.  The dangers of introducing alien animals with particular reference to crayfish.
by D.M. Holdich
Freshwater Crayfish 7:

2.  La conservation des invertbrs.
by J.-P. Ribaut
Freshwater Crayfish 7:

LIST OF PARTICIPANTS

SECTION I.  MORPHOLOGY, TAXONOMY, TRANSPLANTATIONS AND ZOOGEOGRAPHY

3.  Concerning crayfish in Switzerland.
by B. Bttiker
Freshwater Crayfish 7:2-5.

4.  Restoration of native European crayfish stocks.
by O. Lindqvist
Freshwater Crayfish 7:6-12.

5.  A review of the Australian freshwater crayfish fauna with reference to aquaculture.
by R. Hutchings
Freshwater Crayfish 7:13-18.

6.  Multivariate analysis of morphometric variation in three species of freshwater crayfish.
by A. Agerberg
Freshwater Crayfish 7:19-28.

7.  Status of crayfish transplantations.
by J.V. Huner
Freshwater Crayfish 7:29-34.

SECTION II.  ECOLOGY, ETHOLOGY, INTERSPECIFIC RELATIONS, METHODS FOR ECOLOGICAL INVESTIGATIONS

8.  Interaction between European perch (Perca fluviatilis) and juvenile Pacifastacus leniusculus (Dana) in a pond experiment.
by M. Appelberg and T. Odelstrm
Freshwater Crayfish 7:37-45.

9.  Astacus astacus in Lake Steinsfjorden after Canadian waterweed Elodea canadiensis invasion.
by J. Skurdal and T. Qvenild
Freshwater Crayfish 7:47-52.

10.  Inventaire complet d'une population d'Astacus astacus par vidange d'un tang d'levage naturel.
by D. Arnould and P. Grard
Freshwater Crayfish 7:53-60.

11.  The habitats of Astacus astacus L. and Austropotamobius pallipes Lere. in the Morvan.
by G. Lachat and P.J. Laurent
Freshwater Crayfish 7:61-68

12.  Exploitation of Orconectes virilis in northern climates: complimentarity of management options with self-regulatory life history strategies.
by G.E. Morgan and W.T. Momot
Freshwater Crayfish 7:69-80.

13.  Response of a slow growing nobel crayfish, Astacus astacus L., population from a pond in central Finland to several years of exploitation.
by J.V. Huner and O.V. Lindqvist
Freshwater Crayfish 7:81-89.

14.  Habitat partitioning by Australian burrowing crayfish.
by A.M.M. Richardson and P.H.J. Horwitz
Freshwater Crayfish 7:91-97.

15.  The reproductivity of female nobel crayfish Astacus astacus in a northern oligotrophic lake.
by M. Pursiainen, M. Saarela and K. Westman
Freshwater Crayfish 7:99-105.

16.  Maturity and fecundity of Astacus astacus females in Norway.
by T. Taugbl, J. Skurdal and E. Fjeld
Freshwater Crayfish 7:107-114.

17.  Variation in sex ratio in the nobel crayfish Astacus astacus: a reflection of yearly activity changes.
by L. Westin and R. Gydemo
Freshwater Crayfish 7:115-120.

18.  A new technique for tagging juvenile and adult crawfish: tag retention during growth and application to studies in natural habitats.
by J.M. Paret, M.A. Konikoff and A.P. Gaud
Freshwater Crayfish 7:121-128.

SECTION III.  PATHOLOGY, PHYSIOLOGY AND TOXICOLOGY

19.  The crayfish plague fungus Aphanomyces astaci - Diagnosis, isolation and pathology.
by L. Cerenius, K. Sderhll, M. Persson and R. Ajaxon
Freshwater Crayfish 7:131-144.

20.  Food consumption and growth of the crayfish Astacus astacus L. in laboratory experiments.
by B. Sderbck, M. Appelberg, T. Odelstrm and O. Lindqvist
Freshwater Crayfish 7:145-153.

21.  Moulting and growth of the nobel crayfish Astacus astacus in and oligotrophic lake.
M. Pursiainen, M. Saarela and K. Westman
Freshwater Crayfish 7:155-164.

22.  Chiliped loss in Astacus astacus.
by J. Skurdal, T. Taugbl, E. Fjeld and T. Qvenild
Freshwater Crayfish 7:165-170.

23.  Thermal effects on pesticide toxicity for Louisiana red swamp crawfish (Procambarus clarkii).
by A.P. Gaud III
Freshwater Crayfish 7:171-177.

24.  Comparative studies on strains of Fusarium solani parasitic for crayfish or isolated from other hosts.
by M. Chinain and A. Vey
Freshwater Crayfish 7:179-186.

25.  Fungal infection of gills in crayfish: histological, cytological and physiopathological aspects of the disease.
by V. Maestracci and A. Vey
Freshwater Crayfish 7:187-194.

26.  Infection caused by Fusarium solani in crayfish Astacus leptodactylus.
by M. Chinain and A. Vey
Freshwater Crayfish 7:195-202.

27.  Physiological responses of the crayfish Pacifastacus leniusculus to environmental hyperoxia: acid-base and ionoregulation.
by M.G. Whealtly
Freshwater Crayfish 7:203-210.

SECTION IV.  AQUACULTURE, EXPLOITATION, MARKETING AND RESTOCKING

28.  Freshwater crayfish breeding in Basse-Normandie.
by G.D. Amato
Freshwater Crayfish 7:213-222.

29.  The development of a fishery for the crayfish Pacifastacus leniusculus in Sweden 1960/86.
by A. Fjlling and M. Frst
Freshwater Crayfish 7:223-230.

30.  Louisiana's crayfish industry: an economic perspective.
by L.E. Dellenbarger, A.R. Schupp and J.A. Avault
Freshwater Crayfish 7:231-237.

31.  Artificial incubation improvement of crayfish eggs (Pacifastacus leniusculus Dana) under low temperatures during embryonic development.
by J.M. Carral, J.D. Celada, V. Gausioso, C. Temino and R. Fernandez
Freshwater Crayfish 7:239-250.

32.  Growth of the nobel crayfish, Astacus astacus, in a pondstocking experiment.
by R. Gydemo and L. Westin
Freshwater Crayfish 7:251-258.

33.  Finding a profitable population density in rearing summerlings of European crayfish Astacus astacus L.
by M. Keller
Freshwater Crayfish 7:259-266.

34.  Freshwater crayfish culture: rearing and production of Austropotamobius pallipes pallipes (Faxon) for stocking purposes.
by G. De Luise and A. Sabbadini
Freshwater Crayfish 7:267-270.

35.  Nutrition in intensive crayfish culture with a new dry pelleted diet.
by C. Svilla
Freshwater Crayfish 7:271-275.

36.  Does increased mesh size reduce non-legalized fraction of Astacus astacus in trap catches?
by T. Qvenild and J. Skurdal
Freshwater Crayfish 7:277-284.

SECTION V.  POSTERS

37.  Comparative studies on crayfish brooks in Bavaria (Astacus astacus L., Austropotamobius torrentium Schr.)
by E. Bohl
Freshwater Crayfish 7:287-294.

38.  Slectivit des techniques de capture chez les populations d'Austropotamobius pallipes.
by E. Fenouil and P. Legier
Freshwater Crayfish 7:295-302.

39.  Astacus astacus L. identified as IPNV-vector.
by M. Halder and W. Ahne
Freshwater Crayfish 7:303-308.

40.  Food consumption, turnover rates and assimilation in the nobel crayfish (Astacus astacus).
by D.O. Hessen and J. Skurdal
Freshwater Crayfish 7:309-317.

41.  On the muscle and hepatopancreas weight in crayfish (Astacus astacus L.) in Finland.
by E. Lahti
Freshwater Crayfish 7:319-325.

42.  Options for crayfish culture and exploitation in Ireland.
by J.D. Reynolds
Freshwater Crayfish 7:327-331.

SECTION VI.  PUBLICATION OF AUTHORS ABSENT DURING THE CONGRESS

43.  Exploratory-searching behaviour of Astacus leptodactylus Esch. juveniles.
by A. Burba
Freshwater Crayfish 7:335-342.

44.  On the origin of freshwater crayfish (Astacura).
by J.M. Cukerzis
Freshwater Crayfish 7:343-349.

45.  Socioethological aspects of sexual behavior of the signal crayfish Pacifastacus leniusculus Dana introduced in the Lithuanian SSR.
by J. Doroshenko
Freshwater Crayfish 7:351-356.

46.  Crayfish farming in Livingstone, Zambia.
by C.J. Grubb
Freshwater Crayfish 7:357-358.

47.  The influence of water temperature on the feeding intensity of Astacus (Pt.) leptodactylus to the age of one year in artificial conditions.
by R. Karafezlieva-Avramova
Freshwater Crayfish 7:359-362.

48.  Research on the incubation period of Astacus astacus L. under natural conditions.
by M.M. Keller
Freshwater Crayfish 7:363-367.

49.  Some remarks on the biology of the crayfish Pacifastacus leniusculus.
by J. Kossakowski
Freshwater Crayfish 7:369-376.

50.  Testosterone, estradiol and progesterone at separate stages of the intermolt cycle in the crayfish Astacus astacus L. males.
by G. Mackeviciene and N. Chibisova
Freshwater Crayfish 7:377-383.

51.  Anaerobic microorganisms in the digestive tract of the crayfish Pacifastacus leniusculus Dana.
by L.M. Mickeniene
Freshwater Crayfish 7:385-389.

52.  Crayfish and its cultivation in China.
by X. Shu
Freshwater Crayfish 7:391-395.

53.  Growth and development of juveniles of the native and introduced species of freshwater crayfish.
by E.A. Tamkeviciene
Freshwater Crayfish 7:396-400.

54.  Culture of the Australian freshwater crayfish Cherax tenuimanus (Marron) in eastern Australia.
by H. Villarreal
Freshwater Crayfish 7:401-408.