L. Forró szerk.: Miscellanea Zoologica Hungarica 10. 1995 (Budapest, 1995)

Specziár, A.; Vida, A.: Comparative study of Gymnocephalus cernuus (Linnaeus, 1758) and G. baloni Holcik and Hensel, 1974 (Pisces, Percidae)

Table 1. The morphological comparison of Gymnocephalus baloni and G. cernuus, collected from the Danube at Háros (Budapest) in 1993. Gymnocephalus baloni Gymnocephalus cernuus Héros (n=30) Háros (n=30) M m s M + m s t P CD Standard length (mm) 97.53 + 1.88 10.27 84.91 ± 2.79 15.26 3.76 0.001 0.49 Spines in D 14.60 + 0.10 0.56 13.63 + 0.13 0.72 5.80 0.001 0.75 Soft rays In D 11.53 + 0.16 0.90 12.30 ± 0.12 0.65 3.78 0.001 0.49 Spines tn A 2.00 0.00 0.00 2.00 + 0.00 0.00 Soft rays In A 5.73 + 0.11 0.58 5.00 + 0.10 0.53 5.12 0.001 0.66 In % of Standard length Head length 31.49 0.32 1.75 31.73 0.33 1.78 0.53 0.07 Body depth 31.15 + 0.27 1.49 27.22 + 0.23 1.24 11.10 0.001 1.44 Caudal peduncle depth 8.24 + 0.09 0.50 8.23 + 0.11 0.63 0.07 0.01 Body width 20.52 + 0.41 2.27 17.74 + 0.27 1.51 5.59 0.001 0.74 Caudal peduncle width 4.23 + 0.09 0.50 4.87 + 0.08 0.41 5.43 0.001 0.70 Predorsal distance 31.37 + 0.27 1.48 31.76 + 0.33 1.81 0.92 0.12 Postdorsal distance 16.24 + 0.37 2.05 17.93 + 0.38 2.11 3.15 0.01 0.41 Preventral distance 36.65 + 0.43 2.37 34.35 + 0.29 1.57 4.44 0.001 0.58 Preanal distance 69.14 0.40 2.18 67.51 + 0.49 2.69 2.56 0.02 0.33 Distance P-V 4.49 + 0.26 1.44 2.59 + 0.24 1.33 5.32 0.001 0.69 Distance V-A 32.48 + 0.44 2.41 33.16 ± 0.49 2.67 1.03 0.13 Base oi A to anus 6.87 + 0.26 1.45 6.93 + 0.31 1.72 0.15 0.02 Caudal peduncle length 20.15 + 0.37 2.03 23.14 + 0.42 2.28 5.38 0.001 0.70 Length of spinous D 39.60 + 0.43 2.37 35.18 + 0.52 2.85 6.53 0.001 0.85 Length of soft D 12.79 + 0.39 2.13 15.13 + 0.37 2.03 4.35 0.001 0.56 Depth of spinous D 18.80 + 0.32 1.73 19.90 + 0.24 1.32 2.77 0.01 0.36 Depth of soft D 16.44 + 0.26 1.42 15.44 + 0.32 1.74 2.43 0.02 0.32 Length of A 10.71 + 0.27 1.46 9.34 + 0.45 2.49 2.60 0.02 0.35 Depth of Al 14.72 + 0.22 1.21 15.72 + 0.30 1.62 2.72 0.01 0.35 Depth of All 14.30 + 0.21 1.17 14.11 + 0.21 1.13 0.65 0.08 Length of V 21.40 + 0.17 0.95 22.56 + 0.26 1.40 3.75 0.001 0.49 Length of P 20.42 + 0.24 1.34 22.21 + 0.33 1.80 4.38 0.001 0.57 Length of C 17.18 + 0.30 1.67 18.52 + 0.41 2.22 2.63 0.02 0.34 Diameter of Dl 1.13 + 0.03 0.15 1.08 + 0.05 0.25 1.07 0.14 Diameter of Al 1.99 + 0.04 0.24 1.77 + 0.06 0.31 3.10 0.01 0.40 Diameter of VI 1.16 + 0.02 0.13 0.93 + 0.02 0.12 7.17 0.001 0.93 Length of VI 12.36 + 0.22 1.23 12.64 + 0.21 1.15 0.92 0.12 Length of Vs base 5.63 + 0.12 0.63 4.77 ± 0.09 0.50 5.85 0.001 0.76 Length of P's base 6.01 ± 0.09 0.50 5.16 + 0.09 0.49 6.72 0.001 0.87 In % of Head length Head depth 73.02 ± 1.06 5.83 63.96 + 0.75 4.10 6.96 0.001 0.91 Head depth at eye 58.41 0.54 2.% 55.57 + 0.78 4.25 3.00 0.01 0.39 Head width 57.14 ± 0.52 2.85 50.51 + 0.70 .3.86 7.57 0.001 0.99 Diameter of eye 28.26 + 0.43 2.35 29.55 + 0.45 2.48 2.07 0.05 0.27 Length of upper Jaw 20.52 + 0.64 3.48 19.65 + 0.64 3.50 0.97 0.13 Mouth width 39.42 + 0.42 2.29 33.40 + 0.44 2.41 9.92 0.001 1.28 In % of All's length Depth of the cut in the 40.93 + 1.50 8.21 12.61 ± 1.41 7.74 13.75 0.001 1.78 membrane between Al and All