TY - JOUR AU - ROESLI, RENNIE PY - 2011/11/17 Y2 - 2024/03/29 TI - STRAIN DIFFERENCES IN TWO SPECIES OF CALLOSOBRUCHUS (COLEOPTERA: BRUCHIDAE) DEVELOPING ON SEEDS OF COWPEA {VIGNA UNGUICULATA (L.)} AND GREEN GRAM {V. RADIATA (L.)} JF - BIOTROPIA JA - BIOTROPIA VL - 0 IS - 4 SE - Research Paper DO - 10.11598/btb.1991.0.4.191 UR - https://journal.biotrop.org/index.php/biotropia/article/view/191 SP - AB - Ovipositional behaviour, development period, and density effect on adult survival of C. maculatus strains <br />from  Indonesia, Nigeria, and Yemen, and C. chinensis strains  from  Indonesia and Kenya on cowpea and <br />green gram were studied at 20°C and 70% relative humidity. <br />Variations on ovipositional behaviour were found among C. maculatus as well as among C. chinensis <br />strains. Variations on developmental period were found only among C. maculatus strains. The developmental <br />period of Callosobruchus spp. was shorter on green gram than that on cowpea. Density effect was remarkably <br />found only on  adult survival of C. maculatus Yemen strain. These  results make  useful  contribution  to  the <br />species  biology,  and  have  important  implication  if  strains  of  these  species  are  accidentally  imported  to <br />countries, or when new legume crops are introduced. ER -