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Table 3

Distribution and size of trunk spines of the foretrunk of 3 male and 3 female cystacanths of Neoandracantha peruensis.

  Anterior field of spines Middle field of spines Posterior field of spines



  Males Females Males Females Males Females
Dorsal spines            
Number 12–16 (14)a 12–15 (14) 8–10 (9) 11–12 (11) 3–17 (12) 4–13 (10)
Length 32–34 (33)a 36–37 (36) 32–52 (42) 45–55 (49) 37–62 (49) 47–75 (57)
Ventral spines            
Number 10–14 (12) 12–14 (13) 11–18 (15) 11–13 (12) 11–21 (16) 9–25 (16)
Length 32–34 (33) 42–45 (44) 37–52 (45) 50–55 (53) 37–52 (47) 55–60 (57)
Spines/circle 48–50 (49) 38–42 (40) 64–68 (66) 56–64 (60) 40–54 (46) 38–46 (43)
a

Range (mean)

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