. The Biological bulletin. Biology; Zoology; Marine biology. NEMERTEAN NUMBERS AND DEVELOPMENT 137 Percenloge of females in worm population Percentage of female worms on femole crobs. June J 1975 FIGURE 3. Percentage of the C. epialti population comprised of mature or nearly-mature females and percentage of the worms found on brooding females of //. nrciioncnsis thai were mature or nearly-mature females. Overall percentage of worm population that was female was Overall percentage of the worms found in female crabs that were females was worms at any site, except that worms on H,
. The Biological bulletin. Biology; Zoology; Marine biology. NEMERTEAN NUMBERS AND DEVELOPMENT 137 Percenloge of females in worm population Percentage of female worms on femole crobs. June J 1975 FIGURE 3. Percentage of the C. epialti population comprised of mature or nearly-mature females and percentage of the worms found on brooding females of //. nrciioncnsis thai were mature or nearly-mature females. Overall percentage of worm population that was female was Overall percentage of the worms found in female crabs that were females was worms at any site, except that worms on H, oregonensis were clumped under the abdomen in summer (H. oregonensis in winter, F = , ; in summer, F =', P< ; P. crassipes in winter, F = , ; in summer, F = , ). The distribution of worms on male, nonbrooding, and brooding female crabs was significantly different both summer (x2 = , P < ) and winter (x2 = , P < ) for H. oregonensis and in summer (x2 = , P < ) and winter (x2 = , P< ) for P. crassipes, when the number of worms on all legs versus the combined number on the thorax and abdomen were compared for the three types of crabs (except there were no brooding females in the winter P. crassipes sample). Discussion Results of this study show that the highest population of worms occurred in November just preceding the major winter reproductive period of H. oregonensis (Fig. 1). The large numbers of worms found in fall were primarily juveniles and the highest percentages of female worms occurred in August-September and April (Fig. 3). It appears that there is a major reproductive period for. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Red
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