. The Biological bulletin. Biology; Zoology; Marine biology. 186 J. D. COSTLOW, JR., C. G. BOOKHOUT AND R. MONROE 65 60 5 5 50 4 5 4 0 £ 35 _J O 3 0 2 5 H Z 20 UJ O a. ' * u 0- I 0 5 » D 1 *. Ld 1 I ML r* O ^ r^<D0)O— ry r) ^ <o c- coa o - r- <© o» o — *. M I 311 *. 1 Is o»0 — (M'O^i'ko *o r- tn to t~- o - o» O «n vo DAYS Figure 2. Comparison of the time of the second molt for zoeae of Sesarma cincrcum reared at different salinities and temperatures. Black—20° C, white—25° C, diagonal—30° C. At and the majority of the first zoeae molt wi
. The Biological bulletin. Biology; Zoology; Marine biology. 186 J. D. COSTLOW, JR., C. G. BOOKHOUT AND R. MONROE 65 60 5 5 50 4 5 4 0 £ 35 _J O 3 0 2 5 H Z 20 UJ O a. ' * u 0- I 0 5 » D 1 *. Ld 1 I ML r* O ^ r^<D0)O— ry r) ^ <o c- coa o - r- <© o» o — *. M I 311 *. 1 Is o»0 — (M'O^i'ko *o r- tn to t~- o - o» O «n vo DAYS Figure 2. Comparison of the time of the second molt for zoeae of Sesarma cincrcum reared at different salinities and temperatures. Black—20° C, white—25° C, diagonal—30° C. At and the majority of the first zoeae molt within a more limited period of time than at and , at the same temperature. For example, at 30° C, molting was limited to days 3 and 4, with 88 per cent molting on day 3, wdiile at 30° C, , the period of ecdysis was spread over four days wTith no pronounced peak on any one day (Fig. 1). This becomes more evident with later molts. As showm in Figure 2, 93 per cent of the zoeae molted for the second time on days 5 and 6, at 30° C, ; at 30° C, the zoeae did not begin the second molt until the seventh day and then required five days before all had. DAYS Figure 3. Comparison of the time of the third molt for zoeae of Sesarma cincrcum reared at different salinities and temperatures. Black—20° C, white—25° C, diagonal—30° 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-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
Size: 2306px × 1084px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology
