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Comparison of RAPD and PCR-RFLP markers for classification and ...

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190<br />

Fatma H. Galal<br />

M 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3<br />

A B C D E<br />

Fig. 2: Representative 2% agarose gels <strong>of</strong> <strong>PCR</strong>-<strong>RFLP</strong> patterns generated from three<br />

ant species, C. maculatus, M. pharoensis <strong>and</strong> C. bicolor using <strong>for</strong>ty arbitrary<br />

primers. Lane M: DNA marker 100 bp Ladder, lane 1: C. maculatus, lane 2: C.<br />

bicolor <strong>and</strong> lane 3: M. pharoensis. A: <strong>PCR</strong> <strong>of</strong> ITS region, B: EcoRI, C: SacI,<br />

D: TaqI <strong>and</strong> E: MspI.<br />

Table 1: Average percentages <strong>of</strong> common <strong>and</strong> polymorphic b<strong>and</strong>s within each species as revealed by<br />

<strong>RAPD</strong> <strong>and</strong> <strong>RFLP</strong> analyses.<br />

Ant species Total no. <strong>of</strong><br />

<strong>RAPD</strong> molecular marker <strong>RFLP</strong> molecular marker<br />

tested b<strong>and</strong>s % Monomorphic % Polymorphic % Monomorphic % Polymorphic<br />

C. maculatus 556 200/256<br />

56/256<br />

164/300<br />

136/300<br />

78.1<br />

21.9<br />

54.7<br />

45.3<br />

M. pharoensis 741 216/396<br />

180/396<br />

250/345<br />

95/345<br />

54.5<br />

45.5<br />

72.5<br />

27.5<br />

C. bicolor 563 187/248<br />

61/248<br />

172/315<br />

143/315<br />

75.4<br />

24.6<br />

54.6<br />

45.4<br />

On the other h<strong>and</strong>, <strong>RFLP</strong> assay clarified that the highest average percentage <strong>of</strong><br />

monomorphic b<strong>and</strong>s (72.5%) was observed within M. pharoensis. Meanwhile, the<br />

highest average percentage <strong>of</strong> polymorphic b<strong>and</strong>s (45.4%) was observed within C.<br />

bicolor (Table1). Furthermore, <strong>RAPD</strong> analysis revealed that the highest average<br />

percentage <strong>of</strong> monomorphic b<strong>and</strong>s (90.7%) was observed between M. pharoensis <strong>and</strong><br />

C. bicolor. Meanwhile, the highest average percentage <strong>of</strong> monomorphic b<strong>and</strong>s<br />

resolved by <strong>RFLP</strong> (94.6%) was observed between C. maculatus <strong>and</strong> C. bicolor (Table<br />

2). On the other h<strong>and</strong>, the highest average percentages <strong>of</strong> polymorphic b<strong>and</strong>s resolved<br />

by <strong>RAPD</strong> <strong>and</strong> <strong>RFLP</strong> (18.4 <strong>and</strong> 15.8%) were observed between M. pharoensis <strong>and</strong> C.<br />

maculatus (Table 2).<br />

Table (2): Average percentages <strong>of</strong> common <strong>and</strong> polymorphic b<strong>and</strong>s between species as revealed by<br />

<strong>RAPD</strong> <strong>and</strong> <strong>RFLP</strong> analyses.<br />

Ant species Total no. <strong>of</strong> tested<br />

b<strong>and</strong>s<br />

<strong>RAPD</strong> molecular marker <strong>RFLP</strong> molecular marker<br />

M. pharoensis <strong>and</strong> C. maculatus 1297<br />

%<br />

Monomorphic<br />

532/652<br />

81.6<br />

M. pharoensis <strong>and</strong> C. bicolor 1304 584/644<br />

90.7<br />

C. maculatus <strong>and</strong> C. bicolor 1119 447/504<br />

88.7<br />

M. pharoensis, C. maculatus <strong>and</strong> C. bicolor 1860 603/900<br />

67.0<br />

%<br />

Polymorphic<br />

120/652<br />

18.4<br />

60/644<br />

9.3<br />

57/504<br />

11.3<br />

297/900<br />

33.0<br />

%<br />

Monomorphic<br />

543/645<br />

84.2<br />

562/660<br />

85.2<br />

582/615<br />

94.6<br />

586/960<br />

61.0<br />

%<br />

Polymorphic<br />

102/645<br />

15.8<br />

98/660<br />

14.8<br />

33/615<br />

5.4<br />

374/960<br />

39.0

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