Vol. 21 No. 2 (2014)

(1) Pangasinan State University, Philippines ,

(2) ,

(3) ,

(4) ,

(5)

(1) Indonesian Institute of Science, Indonesia ,

(2) ,

(3) ,

(4) ,

(5)

(1) Manipur University, India ,

(2)

(1) Research Center for Biology-LIPI, Indonesia ,

(2) ,

(3) ,

(4) ,

(5)

(1) SUMATERA UTARA UNIVERSITY, Indonesia ,

(2) ,

(3) ,

(4)

(1) Department of Biology, Faculty of Mathematics & Natural Sciences, Bogor Agricultural University, Indonesia ,

(2)