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Table 2 Details of experimental designs presented in the current study.

From: Successfully resisting a pathogen is rarely costly in Daphnia magna

   

Exposure

 

Food

     

#

Host clones

Parasite strains

spore nb

nb

time (days)

age (days)

Jar size (mL)

Sp.

qty (Ă—106)

T°(°C)

rep

ind/jar

Cont.

Expe time (Days)

1

GG3,GG4, GG7,GG13

Sp1,Sp8

50000

1

2

5

60

C

3.5

20

35

1

c. D.

last death

  

Sp1

200000

           

2

GG4,GG7

Sp1

20000

1, 2, 4

2

5, 11, 19, 27

60

C

3.5

20

40

1

c. D.

last death

3

GG4

Sp1

2500

1, 2

10a

1, 5a

60

C

2.1

15, 20,25

30

1

c. D. H2O

60 daysa

4

GG3

Sp1

5000

1

5

1

60

S

5

20

24/72

1

c. D.

38 days

   

50000

           

5

<20 clones, recently wild-caughtb

Mix wild spores

50000

1

5

1

200

S

5

20

70

5

-

35

   

100000

           
  1. aat 20°C, degree-day equivalent for other T°
  2. b Hosts were collected from a Scottish population in Summer 2003, see Duncan and Little Evolution 2007, 61(4):796-803
  3. For each experiment (referred to by their number: #), the D. magna clones (Host clones) and the P. ramosa strains (Parasite strains) used are indicated. The protocol used for the exposure(s) is given, described by the number of spores per Daphnia added (spore nb), the number (nb), the length (time) and the age (age) of the individuals when each exposure was performed. The environmental conditions of the experiment are detailed. For food, the algae species (Sp.: C for Chlorella, S for Scenedesmus) and the quantity (qty, in millions of cells) are indicated. The temperature(s) at which the experiment was performed (T°), the number of replicates per treatment (rep), the number of individuals per jar (ind/jar), the jar size, the controls used [Cont.: crushed unexposed Daphnia (c. D.) or sterile water (H2O)] and the total length of the experiment (Expe time) are also given.