TY - JOUR N2 - Life cycles,number of eggs per female,minimal adult female length and reproductive costs are presented for 18 species of Amphipoda from the West Spitsbergen area, 77 –79 °N. Fifteen species incubated eggs during the polar night and released their offspring in early April. Three species incubated eggs from late spring till late summer. The appearance of the youngest juveniles, indicating the hatching period, is presented for 63 species. Most of the species studied were K strategists, with large eggs of over 1 mm diameter; only one species (Hyperoche medusarum ) was r – strategist. L1 - http://www.journals.pan.pl/Content/110709/PDF/ppr23-253.pdf L2 - http://www.journals.pan.pl/Content/110709 PY - 2002 IS - No 3-4 EP - 264 KW - Arctic amphipods KW - breeding KW - life cycles KW - eggs incubation A1 - Węsławski, Jan Marcin A1 - Legeżyńska, Joanna PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 23 DA - 2002 T1 - Life cycles of some Arctic amphipods SP - 253 UR - http://www.journals.pan.pl/dlibra/publication/edition/110709 T2 - Polish Polar Research ER -