136
Table 3. Effect of diets on the growth and survival of T. platyurus. One-way ANOVA.
Variable
Source of
DF
SS
MS
F
variation
Growth (pooled)
Day 3
Food types
Growth
0.007
0.007
0.025 ns
Error
6
1.633
0.272
Day 6
-do0.013
0.013
0.041 ns
6
1.932
0.322
Day 9
-do1.901
1.901
6.428
6
1.775
0.296
Day 11
-do0.332
0.332
0.223 ns
6
8.935
1.489
Growth (sex-separated)
Day 6
Food types
Growth (males)
0.251
0.251
0.514ns
Error
6
2.936
0.489
Day 9
-dol
0.278
0.278
0.466 ns
Error
6
3.569
0.595
Day 11
-do0.485
0.485
0.098 ns
6
25.587
4.931
Day 6
Food types
Growth
(females)
I
0.531
0.531
1.478 ns
Error
6
2.518
0.360
Day 9
-dol
5.024
5.024
9.438'
6
3.194
0.532
Day 11
-dol
0.011
0.011
O.OQ3ns
6
20.496
3.416
Survival
Day 3
Food types
Survival
I
180.5
180.5
3.171 ns
Error
6
341.5
56.9
Day 6
-dol
21.125
21.125
0.625 ns
6
202.7
33.792
Day 9
-dol
0.125
0.125
O.002ns
6
414.750
69.125
Day 11
-do1.125
1.125
1.174 ns
6
5.750
0.958
, = p<0.05; ns = p>0.05
color (Fig. lB). In comparison, 100% of the animals
cephalus platyurus female has two pairs of shell glands
in treatment 2 were whitish throughout the body. On
connected to the ovisac in the brood-pouch. One pair
day 11, at least five females in each treatment were
(the dark, dorsal pair) is located in the atrium formed
just starting oogenesis. Their ovaries and oocytes difby the two genital segments between the gut and the
fered in color. The females in treatment 1 had ovaries
base of the brood-pouch. The other pair (light, venand oocytes that were green-bluish (Fig. ID), while in
tral pair) is located in the base of the brood-pouch.
females in treatment 2 they were whitish (Fig. 1 C).
The dark dorsal pair is red-brownish to dark brown,
No differences in shell gland color could be detectwhile the light ventral pair is light-brownish to brown
ed among females in either treatment. The Thamno(Fig. Ie & D).
Table 3. Effect of diets on the growth and survival of T. platyurus. One-way ANOVA.
Variable
Source of
DF
SS
MS
F
variation
Growth (pooled)
Day 3
Food types
Growth
0.007
0.007
0.025 ns
Error
6
1.633
0.272
Day 6
-do0.013
0.013
0.041 ns
6
1.932
0.322
Day 9
-do1.901
1.901
6.428
6
1.775
0.296
Day 11
-do0.332
0.332
0.223 ns
6
8.935
1.489
Growth (sex-separated)
Day 6
Food types
Growth (males)
0.251
0.251
0.514ns
Error
6
2.936
0.489
Day 9
-dol
0.278
0.278
0.466 ns
Error
6
3.569
0.595
Day 11
-do0.485
0.485
0.098 ns
6
25.587
4.931
Day 6
Food types
Growth
(females)
I
0.531
0.531
1.478 ns
Error
6
2.518
0.360
Day 9
-dol
5.024
5.024
9.438'
6
3.194
0.532
Day 11
-dol
0.011
0.011
O.OQ3ns
6
20.496
3.416
Survival
Day 3
Food types
Survival
I
180.5
180.5
3.171 ns
Error
6
341.5
56.9
Day 6
-dol
21.125
21.125
0.625 ns
6
202.7
33.792
Day 9
-dol
0.125
0.125
O.002ns
6
414.750
69.125
Day 11
-do1.125
1.125
1.174 ns
6
5.750
0.958
, = p<0.05; ns = p>0.05
color (Fig. lB). In comparison, 100% of the animals
cephalus platyurus female has two pairs of shell glands
in treatment 2 were whitish throughout the body. On
connected to the ovisac in the brood-pouch. One pair
day 11, at least five females in each treatment were
(the dark, dorsal pair) is located in the atrium formed
just starting oogenesis. Their ovaries and oocytes difby the two genital segments between the gut and the
fered in color. The females in treatment 1 had ovaries
base of the brood-pouch. The other pair (light, venand oocytes that were green-bluish (Fig. ID), while in
tral pair) is located in the base of the brood-pouch.
females in treatment 2 they were whitish (Fig. 1 C).
The dark dorsal pair is red-brownish to dark brown,
No differences in shell gland color could be detectwhile the light ventral pair is light-brownish to brown
ed among females in either treatment. The Thamno(Fig. Ie & D).