The effect of environmental variation on the reproductive development time and output of the high-shore rockpool copepod Tigriopus brevicornis

摘要: Abstract The extreme environmental changes observed in high-shore rockpools occupied by Tigriopus brevicornis, provide a significant physiological challenge that may have implications for the energetics and hence life history characteristics of this species. present study was designed to assess effect variation on reproductive development time output T. brevicornis terms duration various stages ovary egg sac maturation as well naupliar first copepodite stage total numbers copepodites produced. There difference three test salinities with only successful I seen normal seawater (35 psu). also release nauplii at low salinity (5 psu), but no subsequent survival stage, whilst there not even sacs high medium (70 psu). times temperatures fastest temperature (23 °C) slowest lowest (5 °C). However, it should be noted highest number produced actually mid (12 °C), temperature. Exposure hypoxic anoxic conditions had significantly detrimental slower through individuals surviving from conditions, good normoxic conditions. indicates animals living incur considerable energetic cost, due are characteristic habitat importance resource allocation these different is paramount species' survival.