Transcript Folie 1 - FishBase

Nemo TP 7
Growth of Fishes
in Relation to
Reproduction and Oxygen Consumption
Rainer Froese
Bernd Ueberschär
Holger Meyhoff
Cristina Garilao
(MASY Meeting 17.07.09 in Kiel)
What Limits Growth?
Energie invested in reproduction
‘Reproductive drain hypothesis’
Available oxygen
‘Oxygen is limiting’ hypothesis
GASPING FISH AND PANTING SQUIDS:
Oxygen, Temperature and the Growth of
Water-Breathing Animals
by
DANIEL PAULY
(in prep)
?
Virgins
8
7
Length (cm)
6
5
Mothers
4
3
Maturity
2
Poecilia reticulata
1
♀
0
0
1
Age (years)
2
8
7
Length (cm)
6
5
4
3
2
1
0
0
1
Age (years)
2
8
7
Length (cm)
6
5
4
Increase oxygen
supply
3
2
1
0
0
1
Age (years)
2
?
8
7
Length (cm)
6
5
4
Increase oxygen
supply
3
2
1
0
0
1
Age (years)
2
Aquarium Vorderansicht
100
20
50
50
20
Werkstatt Stellplatz Frontansicht
Aquarium Rückansicht
10
(Wasserhöhe)
Ges.Höhe: 375
200
296
50
50
46
200
100
400
Angaben [ cm ]
Demo
Mixed Size Tank
90
80
70
Length (mm)
60
50
40
30
20
10
0
0
1
2
3
4
5
6
7
Days
8
9
10
11
12
13
14
15
Smallest Guppies
60
50
Length (mm)
40
30
20
10
0
0
1
2
3
4
5
6
7
Days
8
9
10
11
12
13
14
15
Next Steps
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Verify and optimize video measurements
Get 100 small Guppy females
Do pre-experiment
Build Facility with 4 parallele Tanks
Get 400 small Guppy-females
Do main-experiment
Write paper