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Table 2
Results of analysis of variance (two-way ANOVA) performed for rate of population growth and morphometric parameters of B. angularis exposed to four Asplanchna-released kairomone concentrations and cultured at two S. obliquus levels.
Variation source | SS | df | MS | F | P | |
---|---|---|---|---|---|---|
Rate of population growth | ||||||
Kairomone concentration (A) | 0.00 | 1 | 0.00 | 6.39 | <0.05 | |
Algal density (B) | 0.03 | 3 | 0.01 | 35.86 | <0.01 | |
A × B | 0.01 | 3 | 0.00 | 9.31 | <0.01 | |
Error | 0.00 | 16 | 0.00 | |||
Lorica length | ||||||
Kairomone concentration (A) | 0.88 | 1 | 0.88 | 0.13 | >0.05 | |
Algal density (B) | 25.55 | 3 | 8.52 | 1.22 | >0.05 | |
A × B | 68.76 | 3 | 22.92 | 3.29 | <0.05 | |
Error | 111.53 | 16 | 6.97 | |||
Lorica width | ||||||
Kairomone concentration (A) | 1.10 | 1 | 1.10 | 0.17 | >0.05 | |
Algal density (B) | 52.07 | 3 | 17.36 | 2.76 | >0.05 | |
A × B | 36.03 | 3 | 12.01 | 1.91 | >0.05 | |
Error | 100.54 | 16 | 6.28 | |||
Body size | ||||||
Kairomone concentration (A) | 1.51×106 | 1 | 1.51×106 | 0.01 | >0.05 | |
Algal density (B) | 8.66×108 | 3 | 2.89×108 | 1.74 | >0.05 | |
A × B | 1.42×109 | 3 | 4.73×108 | 2.86 | >0.05 | |
Error | 2.65×109 | 16 | 1.65×108 | |||
Egg volume | ||||||
Kairomone concentration (A) | 1.65×106 | 1 | 1.65×106 | 0.09 | >0.05 | |
Algal density (B) | 1.49×108 | 3 | 4.96×107 | 2.64 | >0.05 | |
A × B | 1.90×108 | 3 | 6.33×107 | 3.37 | <0.05 | |
Error | 3.01×108 | 16 | 1.88×107 |
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