Table 2 P values and genotype rank orders for mass, length, and survival under different environmental conditions. Complex habitats consisted of a gravel bottom, a large log, two plants, and four large rocks whereas simple habitats were bare tanks. Natural food (Nat) included live or frozen brine shrimp, frozen bloodworms, frozen Mysis and live crickets, and artificial food (Art) consisted of commercial pellets (Skretting Canada Ltd.).

From: Importance of Experimental Environmental Conditions in Estimating Risks and Associated Uncertainty of Transgenic Fish Prior to Entry into Nature

Treatment

Habitat

Food

Predator

Genotype difference, P value

Type

Amount

Mass

Length

Survival

A

Complex

Nat

Normal

No

=, 0.55

=, 0.51

T>NT, 0.042

B

Complex

Art

Satiation

No

T>NT, 0.004

T>NT,<0.001

NT>T, 0.028

C

Simple

Nat

Normal

No

=, 0.22

=, 0.21

=, 0.58

D

Complex

Nat

Normal

Yes

n/a

n/a

=, 0.28

E

Complex

Nat

Satiation

No

T>NT, 0.0401

=, 0.054

=, 0.082

F

Simple

Art

Satiation

No

T>NT, 0.006

T>NT, 0.01

=, 0.79

Hatchery

Hatchery

Art

Satiation

No

T>NT, 0.002

T>NT, 0.003

NT>T, 0.037

  1. A normal amount of food was half the satiation ration; the satiation ration was approximated by feeding the fish until a small amount of excess food remained on the bottom of the tank. T = transgenic; NT = non-transgenic.
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