Research Article

Life Histories of Two Endangered Sea Skaters Halobates matsumurai Esaki and Asclepios shiranui (Esaki) (Hemiptera: Gerridae: Halobatinae)

Table 1

Average numbers of mature and submature eggs per female and length and width of mature eggs of H. matsumurai.

Date of sampling (2008) No. (average ± S.D.) of eggs/female Length and width (average ± S.D.) of mature egg
Mature eggsSubmature eggsLength (mm)Width (mm)

June 23, 30; July 46 (1)4.3 ± 4.841.8 ± 2.481.59 ± 0.010.53 ± 0.04
Aug. 1, 2010 (0)7.7 ± 3.164.1 ± 2.021.61 ± 0.090.52 ± 0.04
Sept. 17; Oct. 1410 (1)5.3 ± 2.633.0 ± 2.491.73 ± 0.100.59 ± 0.04

*Number of females dissected. Values in parenthesis are the number of females with neither mature nor sub-mature eggs.