Biological Studies on the Social Evolution of Ocypodid Crabs in the Indo-West Pacific.

1989 ~ 1991年，我们在马来西亚雪兰莪州Sementa和泰国普吉岛附近的红树林沼泽中对裸足类Uca和Ilyoplax进行了野外调查。在us玫瑰色的雄性用简单的爪子挥舞来向雌性求爱，而且挥舞的时间短得可以忽略不计。与美国相比，本研究提出了一个假说，即在美国雄性果蝇中，具有高度专门化和复杂的挥手行为的引诱行为。rosea是包括U. Jactea在美国显示出介于U之间的波动特征的四边形。. rosea和lactea，雄性采用了在美国观察到的两种行为。玫瑰花和乳白色，用于通过挥动来吸引雌性。这一结果支持了上述假说。将肌肉、鳃、眼和肝胰腺组织匀浆化。将提取物离心， ...更多信息 然后将上清液加载到淀粉凝胶中。共分析了10种酶，由13个位点编码。用Nei.分析表明，Celuca是一个与其他亚属（如：D=0.912之间Celuca和Deltuca），并推测这两个印度太平洋物种Celuca（U。lactea和triangularis）来自美国股票。因此，有必要将Deltuca与起源于印度洋-太平洋的Amphiuca亚属进行比较，并描述了Ilyoplax（orientalis，delsmani，gangetca）3种动物在野外观察中的摆动展示形式和求偶时的颜色变化。雄性求偶活动存在半月周期。在雄性个体中，确定了波动与非波动的时相交替发生。伦塔利斯尔这些热带物种可能与今天生活的Ilyoplax的祖先形式最相似。少

We conducted field studies of behavior of genera Uca and Ilyoplax, family Ocypodidae during 1989-91 in mangrove swamps near Sementa, Selangor, Malaysia and Phuket Island, Thailand.The mating behavior is highly varied among species in Uca. In U. rosea males court females with simple claw-waving and the amount of time devoted to waving is negligibly short. In comparison with U. lactea males with highly specialized and complex waving, we proposed a hypothesis that attracting behavior with waving display in U. rosea is original form of that typical of subgenus Celuca species including U. Jactea.In U. tetragonon which shows wave characteristics intermediate between U. . rosea and lactea, the male adopted both behaviors observed in U. rosea and lactea for attracting females with waving. This result supports the hypothesis noted before.For the isozyme analysis, 7 species of malaysian Uca were used. Tissue of muscle, gills, eyes, and hepatopancreas were homogenized. Extracts were centrifuged a … More nd the supernatant then loaded in starch gels. A total of 10 enzymes, encoded by 13 loci, were analyzed. The genetic distance between species was determined by the method of Nei. The analysis show that Celuca is a highly distant group from the other subgenera (eg. D=0.912 between Celuca and Deltuca), and presumably that two Indo-Pacific species of Celuca (U. lactea and triangularis) are derived from American stock. Therefore it may be necessary to compare Deltuca (like rosea) with subgenus Amphiuca originated in the Indo-Pacific and with advanced waving display.In field observation of 3 species of Ilyoplax (orientalis, delsmani, gangetca), form of waving display and change in coloration associated with courting was described. Semilunar cycle in male courting activity was found in these species. Occurrence of phase alternation between waving and non-waving was conformed in male individual of I. roientalisl. These tropical species may be most similar to ancestral form of the Ilyoplax living today. Less