. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. (I I MM PV. F IOMM FIGURE 2. Calliobdella carolinensis; A, two copulating individuals; B, dorsal view of cocoon; C, lateral view of cocoon; D-G, cocoon deposition. See text for further explanation. brown in about an hour. Like the cocoons of all other Piscicolidae, each cocoon contains only a single egg. Throughout cocoon deposition, which takes 3 to 4 minutes, the hindsucker is firmly attached, whereas the foresucker is free to move about. The individual usually remains attached to the same spot and deposits many more cocoo
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. (I I MM PV. F IOMM FIGURE 2. Calliobdella carolinensis; A, two copulating individuals; B, dorsal view of cocoon; C, lateral view of cocoon; D-G, cocoon deposition. See text for further explanation. brown in about an hour. Like the cocoons of all other Piscicolidae, each cocoon contains only a single egg. Throughout cocoon deposition, which takes 3 to 4 minutes, the hindsucker is firmly attached, whereas the foresucker is free to move about. The individual usually remains attached to the same spot and deposits many more cocoons. Often the deposition of cocoons is interrupted by mating, again without moving the hindsucker. Sometimes the individual moves to several other spots to deposit the rest of the cocoons. In the laboratory the first cocoons were deposited on 12 February 1971 and 26 February 1972 by individuals collected on 8 February 1971 and 23 February 1972 when the water temperature was ° and ° C, respectively. Fourteen individuals collected on 8 February 1971 first mated and deposited cocoons on 12 February. Most of the cocoons were deposited between 15 and 19 February, and the last of a total 211 cocoons was deposited on 24 February. Most of the cocoons were aggregated into ten clumps of 7 to 29 cocoons. Assuming that 10 individuals were responsible for the aggregations, cocoons per individual can be conservatively estimated. Similarly, two leeches collected on 5 March shortly afterwards deposited 41 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, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Mar
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
