. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 122 CHARLES H. BIGGER 30- 20-. 1 2 3 i 5 6 7 8 9 10 11 12 13 U 15 16 16 EXCITATION PERIODImin.) 25 FIGURE 9. Duration of the excitation periods of 157 A. krchsi intraspecific acrorhagial responses. The excitation period was defined as the time from first contact of the animals to the expansion of an acrorhagus to one half the length of adjacent tentacles. ever, there is no appreciable decrease in tentacle size and the fluid used to inflate the acrorhagi appears to come from the main coelenteron. In most responses, applicatio
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 122 CHARLES H. BIGGER 30- 20-. 1 2 3 i 5 6 7 8 9 10 11 12 13 U 15 16 16 EXCITATION PERIODImin.) 25 FIGURE 9. Duration of the excitation periods of 157 A. krchsi intraspecific acrorhagial responses. The excitation period was defined as the time from first contact of the animals to the expansion of an acrorhagus to one half the length of adjacent tentacles. ever, there is no appreciable decrease in tentacle size and the fluid used to inflate the acrorhagi appears to come from the main coelenteron. In most responses, application behavior immediately followed the acrorhagial expansion (Fig. 10). However, during some responses, several minutes elapsed between acrorhagial expansion and the onset of application behavior. Application behavior was never initiated during some acrorhagial responses, and in many of these instances, the tentacles and column were contracted so that the acrorhagi were prominent. Even without application, a touch of the eliciting animal to an expanded acrorhagus caused an acrorhagial peel. As in A. clcgantissinio (Francis, 1976), the number of acrorhagi a specimen of A. krcbsi possesses varies and is not strictly proportional to anemone size. Typically, as the application phase of the acrorhagial response progresses, more acrorhagi expand. The total number of expanded acrorhagi (usually 2-8) varies 50 o Q. I/) 30 OC. £20j 012345678 26 TIME FROM EXPANSION TO APPLICATIONImin.) K 10. Times from acrorhagial expansion to the onset of application behavior during 134 A. krcbsi intraspecific acrorhagial 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
