Complete larval development and first crab stages of the sesarmid crabs Armases roberti (H. Milne Edwards, 1853) and A. ricordi (H. Milne Edwards, 1853) from Jamaica were obtained from laboratory culture. All larval stages (four zoeal stages and the megalopa) and the first juvenile crab stage of A. roberti are described and illustrated in detail for the first time, and a previous description of...

19 20 21 Pimm, S.L. (1982) Food Webs, Chapman &Hall Lawton, J.H. (1989) Ecological Concepts (Cherrett, J.M., ed.), pp. 43-78, Blackwell Pimm, S.L., Lawton, J.H. and Cohen, J.E. (1991) Nature 350,669-674 Martinez, N.D. (1991) Ecol. Monogr. 61,367-392 Paine, R.T. (1988) &o/o9 69,1648-1654 Pimm, S.L. (1984) Nafure 307,321-326 Pimm, S.L. (1991) The Balance ofNature? University of Chicago Press Hall...

particle size, board density and adhesive content are the most important factors, influencing on physical and mechanical properties of particleboard. in this study the effects of density, adhesive content and particle size on withdrawal strength of particleboard made from populus (populus alba) particles have been studied. three levels of density including 0.65, 0.7, and 0.75 g/cm3, three level...