228 Studies in Animal Behavior 



havior of the females and their attitude while being 

 carried closely resemble what is found in the Amphi- 

 poda. So also does their behavior when the males 

 come in contact with them and attempt to seize them. 

 The female during the efforts of the male to clasp 

 her around the base of the abdomen usually lies quiet 

 with the appendages drawn close to the body. . . . 



"So far as could be detected the males do not seek 

 or follow the females at a distance as Parker con- 

 cluded they did in Labidocera. The association of 

 the sexes seems to be due merely to chance collisions. 

 Males often attempt to seize other copepods regard- 

 less of sex. The males resist such attempts at seiz- 

 ure and dart quickly away, while the females often 

 stop and submit readily to the clasping propensities 

 of their companions. Several males were injured so 

 that they could not resist seizure, and in many cases 

 they were seized by other males who worked indus- 

 triously until they got their burden clasped around 

 the base of the abdomen in the usual way. These 

 associations did not last long, however; the active 

 males, apparently appreciating that something was 

 wrong, soon swam away. Recently killed females 

 were often seized and in some cases carried about 

 for a while, but they were finally dropped." 



There was no evidence that odor determined the 

 sexual behavior of the males. The males paid no 

 attention to a number of females that were enclosed 

 within a tube whose end was covered with wire 

 gauze. In another experiment several females were 



