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Table 2 Dimensions (µm) of the naupliar instars from single sex broods of Sacculina carcini Thompson, 1836

From: Synchronism of naupliar development of Sacculina carcini Thompson, 1836 (Pancrustacea, Rhizocephala) revealed by precise monitoring

Instar Length, µm (mean ± SD) S Width, µm (mean ± SD) S
Female Male Female Male
Larva-body
N2 250.8 ± 9.7 278.0 ± 6.6 *** 115.4 ± 5.3 127.2 ± 3.4 ***
N3 272.6 ± 11.6 303.6 ± 9.8 *** 121.5 ± 5.9 132.2 ± 5.2 ***
N4 285.1 ± 8.2 312.2 ± 8.2 *** 126.6 ± 8.9 142.8 ± 2.8 ***
N5 285.9 ± 23.3 315.0 ± 12.7 *** 136.5 ± 11.5 144.4 ± 6.6 ***
Cypris 238.4 ± 5.1a 276.5 ± 6.9b *** – –  
Larva-Furca
N2 37.8 ± 3.1 43.0 ± 5.0 ** 22.0 ± 1.6 23.7 ± 1.4 ***
N3 48.4 ± 6.5 55.1 ± 5.6 *** 23.0 ± 1.8 26.8 ± 1.9 ***
N4 48.3 ± 7.0 47.2 ± 7.0 p = 0.478 24.3 ± 2.2 27.6 ± 2.6 ***
N5 38.4 ± 6.8 39.1 ± 7.5 p = 0.8344 21.8 ± 1.8 20.5 ± 1.9 **
  1. Single-sex broods, retrospectively sexed, were used. N1 were not found in naturally released broods (n = 25 for each instar N2–N5)
  2. N2–N5 naupliar instars 2–5, p p value, *** p < 0.0001; ** p < 0.001, S significant, SD standard deviation
  3. a(n = 31)
  4. b(n = 49)
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Helgoland Marine Research

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