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 2. The morphological comparison of Gymnocephalus baloni and G. cernuus, collected from the Danube in the Szigetköz side-branch system in 1993. I Gymnocephalus baloni ISzifletkőz (n=30;*n=29) Gymnocephalus cernuus Sziqetköz (n=30) M + m s M + m s t P CD Standard length (mm) 78.80 + 2.88 15.76 91.90 + 2.89 15.85 3.21 0.01 0.41 Spines in D 14.63 + 0.11 0.61 13.50 + 0.10 0.57 7.39 0.001 0.95 Soft rays in D 11.60 + 0.12 0.67 12.80 + 0.13 0.71 6.69 0.001 0.86 Spines in A 2.00 + 0.00 0.00 2.00 + 0.00 0.00 Soft rays in A 5.83 + 0.11 0.59 5.37 + 0.09 0.49 3.33 0.01 0.43 In % of Standard length Head length 33.02 + 0.20 1.08 31.84 + 0.23 1.27 3.85 0.001 0.50 Body depth 29.85 0.22 1.20 25.94 + 0.21 1.13 12.97 0.001 1.67 Cauda! peduncle depth 8.14 + 0.12 0.67 8.01 + 0.06 0.35 0.97 0.13 Body width 19.14 + 0.24 1.32 16.64 + 0.20 1.11 7.93 0.001 f.03 Caudal peduncle width 4.32 + 0.15 0.78 4.48 + 0.08 0.42 1.01 0.14 Predorsal distance 32.44 + 0.25 1.34 30.75 + 0.14 0.75 6.04 0.001 0.81 Postdorsal distance 17.00 + 0.29 1.56 18.48 + 0.35 1.90 3.27 0.01 0.43 Preventral distance 36.12 + 0.34 1.85 34.97 + 0.25 1.35 2.76 0.01 0.36 Preanal distance 66.82 + 0.26 1.40 67.22 + 0.34 1.87 0.93 0.12 Distance of PA/ 3.49 + 0.15 0.81 3.22 + 0.15 0.84 1.26 0.16 Distance of V-A 30.70 + 0.37 2.03 32.26 + 0.39 2.16 2.88 0.01 0.37 Base of A to anus 6.96 + 0.22 1.21 6.83 + 0.19 1.03 0.44 0.06 Caudal peduncle length 21.18 + 0.36 1.94 22.86 + 0.31 1.72 3.53 0.001 0.46 Length of spinous D 37.81 + 0.38 2.06 35.23 + 0.30 1.63 5.36 0.001 0.70 Length of soft D 12.75 + 0.34 1.85 15.54 + 0.34 1.88 5.75 0.001 0.75 Depth of spinous D 19.90 + 0.27 1.46 20.85 + 0.24 1.29 2.68 0.01 0.35 Depth of soft D 16.67 + 0.18 0.97 15.35 + 0.19 1.04 5.01 0.001 0.65 Length of A 11.93 + 0.37 1.99 9.92 + 0.27 1.45 4.45 0.001 0.59 Depth of Al 16.71 + 0.28 1.49 16.70 + 0.24 1.32 0.03 0.00 Depth of All 15.87 + 0.19 1.00 15.20 + 0.22 1.23 2.29 0.05 0.30 Length of V 22.35 + 0.21 1.16 21.58 + 0.21 1.17 2.58 0.02 0.33 Length of P 21.04 + 0.22 1.19 20.45 + 0.17 0.93 2.16 0.05 0.28 Length of C 16.98 + 0.42 2.28 17.06 + 0.33 1.80 0.15 0.02 Diameter of Dl 1.18 + 0.02 0.13 1.07 + 0.02 0.12 3.58 0.001 0.46 Diameter of Al 1.94 + 0.05 0.26 1.82 + 0.06 0.31 1.57 0.20 Diameter of VI 1.06 + 0.02 0.11 0.97 + 0.04 0.20 2.00 0.05 0.27 Length of VI 13.75 + 0.15 0.83 13.51 + 0.37 2.02 0.61 0.09 Length of Vs base 5.62 + 0.10 0.53 5.16 + 0.11 0.59 3.20 0.01 0.41 Length of P's base 6.08 0.09 0.49 5.26 + 0.12 0.64 5.56 0.001 0.72 In % of Head length Head depth 64.24 + 0.56 3.07 59.66 + 0.78 4.27 4.77 0.001 0.62 Head depth at eye 56.47 + 0.54 2.91 52.79 + 0.47 2.60 5.11 0.001 0.67 ' Head width 55.20 + 0.44 2.36 51.59 + 0.60 3.30 4.82 0.001 0.64 ' Diameter of eye 28.78 + 0.29 1.61 26.61 + 0.37 2.01 4.61 0.001 0.60 Length of upper jaw 21.07 + 0.35 1.93 20.46 + 0.45 2.47 1.07 0.14 Mouth width 38.28 + 0.38 2.09 34.45 + 0.44 2.38 6.62 0.001 0.86 In % of All's length Depth of the cut in the 38.50 + 1.11 6.08 13.28+ 1.08 5.93 16.13 0.001 2.10 membrane between Al and All