Research school on Understanding bacterial interactions - and the potential use in sustainable control of fish diseases

Date: 18-24 April 2004

 

ECTS: 3 points

 

Venue
Danish Institute for Fisheries Research, Dept of Seafood Research

 

Course description

The course will through lecturers introduce the participants to disease problems in aquaculture with special emphasis on sustainable control. This will include the fish immune response, problems related to use of antibiotics as well as vaccination programmes. Major emphasis will be on bacterial interactions:

1) the selection and use of probiotic cultures and

2) the understanding of quorum sensing regulated bacterial communication and its potential use in disease control.

The objective is to give the Ph.D. students a basis for understanding interactions between bacteria relevant for fish diseases, and, to a limited extend, their interaction with the fish host. Practicals at the course will introduce the participants to AHL-signalling and to selection and testing of probiotic bacteria. All participants will be expected to prepared a short oral presentation of their own project.

 

Costs

There is no course fee, but you will have to make accommodation arrangements. A number of single and double rooms have been reserved at the Ph.D. hostel at the campus of the Danish Technical University. Hotel rooms are available in Lyngby (near-by town) or in Copenhagen (12 km - with good public transport), e.g. CabInn.

 

Further information

Professor Lone Gram or Secretary Christina Gundorff
Danish Institute for Fisheries Research,
Department of Seafood Research
Søltofts Plads
c/o Technical University of Denmark bldg. 221
DK-2800 Kgs. Lyngby
Denmark
phone: +45 45 25 25 86 or +45 45 88 33 22
fax: +45 45 88 47 74
e-mail or

 

You can also contact Professor Kurt Buchmann, Dept. of Veterinary Microbiology, The Royal Veterinary and Agricultural University, Stigbøjlen 4, DK-1879 Frederiksberg C, Denmark; phone: +45 3528 2700; fax: +45 3528 2711; e-mail

 

Dead-line

Please download and complete this application form (MSWord .doc). Deadline for the formal application is April 1st 2004.

The course is intended for Ph.D. students, however, any vacancies are open for non-Ph.D. students. The individual lectures will be open to anyone interested.

The course is conducted under the auspice of the research school SCOFDA (Sustainable Control of Fish Diseases in Aquaculture).

Note that the course will be limited to 20 participants.

 

Program

Sunday 18th - Arrival
17- Arrival, registration, get-together dinner + drinks

Monday 19th - Aquaculture and disease
9-10 LG Welcome to course; short presentation of participants
10-11 KB Aquaculture and disease problems (general)
11-12 BN Fish diseases in Australian mariculture
12-13 Lunch
13-14 BN Bacterial diseases of penaid prawns
14-15 LG, MRa, CBu, JBB Introduction to practicals
15-17 Practicals

Probiont
Dilute, plate potential probionts (NB: inoculate Saturday)
Sample, dilute and plate from fish skin, fish gills and fish intestine on non-selective plates (NB: also to be used for AHL-work)

AHL
Sub-culture fish pathogens
Infect trout with V. anguillarum and other pathogens
Inoculate AHL-monitor CV026 (Umeå strain)


Tuesday 20th - Diseases and treatments
9-10 ID Important bacterial fish diseases
10-11 KB Fish immune system - response to infections
11-12 BN Role of bacteria in AGD in salmon
12-13 Lunch
13-14 MSB Control of bacterial fish diseases;
antibiotics and resistance problems
14-15 JLL Control of bacterial fish disease;
vaccines against bacteria
15-17 Practicals

AHL
Extract AHL compounds from fish pathogens
Dissect diseased fish and extract AHL compounds
Re-inoculate AHL-monitor in LB-medium with antibiotic (for TLC as well)
Streak against AHL-monitor


Wednesday 21st - Presentations
9-10 Practicals

TLC-profiling; start TLC-plates

10-12 Presentation and discussion of course participant projects
12-13 Lunch
13-14 Presentation and discussion of course participant projects
14-15
15-17 Practicals

Probiont
Cast plates with V. anguillarum as target organism
Replica-plate from pure cultures of probionts and fish samples onto V. anguillarum plates

AHL
Cast AHL-monitor-plates and
1) test extracts (bacteria and fish) in well-diffusion
2) dry and agar-develop TLC-plates
3) replica-plate from natural fish surface samples


Thursday 22nd - Probiotics
9-10 LG Antagonistic activity of microorganisms - use of biological control
10-11 MoJ Human probiotics
11-12 TL Probiotics in warm-blooded animals
12-13 Lunch
13-14 ON Biocontrol in plant/rhizozphere communities
14-15 LG Probiotics in fish and larval rearing
15-17 Practicals

Probiont
Streak inhibitory colonies on agar-plates and inoculate in broth
Inoculate V. anguillarum for a well-diffusion assay


Friday 23rd - Quorum sensing
9-10 MG Bacterial quorum sensing; regulation of virulence factors
10-11 JBB AHLs in fish pathogens
11-12 DM AHL-regulation of virulence factors in V. anguillarum
12-13 Lunch
13-14 TB Quorum sensing inhibition - how to find and test
14-15 MRa QS in fish pathogens - perspectives on QSI
15-17 Practicals
Probiont

Cast V. anguillarum well-assay plates
Pipette isolated potential antagonists in plates

Optional:
Gram-reaction, motility, oxidase and catalase on streaked isolates. Inoculate in H&L-tubes

AHL
Read TLC-plates
Read well-assay plates


Saturday 24th - Practicals, evaluation
10-11 Practicals
Read TLC-plates
Read well-diffusion agar plates
Identify strains
Discussion of results
11-12
12-13 Course evaluation
13-14

Lunch

 

Lecturers

Initials Name Title Address
LG Lone Gram Professor FF-DIFRES1
KB Kurt Buchmann Professor LFD-KVL2
BN Barbara Nowak Senior Lecturer University of Tasmania
School of Aquaculture
MRa Maria Rasch Project researcher FF-DIFRES1
CBu Christiane Buch Ph.D. student FF-DIFRES1
ID Inger Dalsgaard Senior scientist HØK-DIFRES1
MSB Morten Sichlau Bruun Scientist HØK-DIFRES1/LFD-KVL2
/
JLL Jens Laurits Larsen Professor LFD-KVL2
MoJ Mogens Jakobsen Professor KVL2
Dept. of Dairy and Food Science
TL Thomas D. Leser Senior Scientist Animal Health RD&A
Chr. Hansen A/S
ON Ole Nybroe Associate Professor G&M-KVL2
MG Michael Givskov Associate Professor BioCentrum3
TB Thomas Bovbjerg Rasmussen Ph.D. student BioCentrum3
DM Debra Milton Docent Dept. of Molecular Biology
Umeå University
JBB Jesper B. Bruun


1. DIFRES: Danish Institute for Fisheries Research.
FF: Dept. of Seafood Research.
HØK: Dept. of Marine Ecology and Aquaculture.

2. KVL: The Royal Veterinary and Agricultural University.
G&M: Section of Genetics and Microbiology, Dept. of Ecology.
LFD: Lab. for Fish Diseases, Dept. of Veterinary Microbiology.

3. BioCentrum: Centre for Biomedical Microbiology, Technical Uni. of Denmark

Sidst opdateret 02.05.2007