Biol. Bull. -- Brown-Peterson et al. 214 (1): 6 Table 1

Table 1 Reproductive parameters (mean ± SE) of female specimens of Palaemonetes pugio in a multiple-brood study of cyclic hypoxia

Exposure Brood # n Relative fecundity (#eggs/g) Interbrood interval (d) Live hatch (%) Larval survival (d)

HH 1 18 ^a159.8 ± 19.0 22.1 ± 2.4 94.9 ± 1.4 6.2 ± 0.2

2 5 173.1 ± 50.6 ^a18.5 ± 1.9 89.9 ± 6.1 5.3 ± 0.4

1+2 5 ^a360.0 ± 83.3 ^— 92.8 ± 3.2 5.9 ± 0.3

HN 1 20 ^a,b267.6 ± 28.0 23.9 ± 3.1^x 95.1 ± 2.4 5.8 ± 0.3

2 14 280.6 ± 26.2 ^b11.7 ± 0.4^y 95.7 ± 0.8 5.3 ± 0.2

3 2 354.5 ± 33.5 ^c11.5 ± 0.4^y 95.6 ± 0.6 4.5 ± 0.0

1+2 14 ^a,b560.9 ± 56.2 ^— 94.8 ± 1.7 5.6 ± 0.2

NN 1 16 ^b373.7 ± 40.9 20.3 ± 1.5^x 96.4 ± 0.9 6.6 ± 0.3^x

2 9 345.2 ± 74.2 ^b9.8 ± 1.9^y 98.0 ± 0.7 5.3 ± 0.3^y

1+2 9 ^b725 ± 97.0 ^— 96.4 ± 0.8 6.0 ± 0.3

n based on number of shrimp that carried a brood through hatch. Broods 1+2 represent combined values for shrimp that produced 2 broods. HH—females continuously exposed to cyclic hypoxia (1.5–8 mg/l DO, 4.20–18.88 kPa) over 24 h for 77 days; HN—females exposed to cyclic hypoxia for 2 weeks prior to mating and allowed to mate in normoxia (8 mg/l DO); NN—females continuously exposed to normoxia (8 mg/l DO) for 77 days. Superscripts a–c represent significant differences among exposures within a brood; superscripts x–y represent significant differences among broods within an exposure.