. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 180 1 04- 1 o4- 20 -, 10 - o 40 - JO - 20- 10- o in 20- u. 0 10 - a 30 -i CLIFFORD A. SIEGFRIED Crangon ftancltccrufn October 1977 n= 29 NovlmMf 1977 n = 8 Januory-February l»78 11*18 March 1978 n=6 April 1978 Junt 1978 n • 258 111 July 1978 n« 222. S«pttmt>«r 1978 n = 177 Oclob«t 1978 n= 207 20 SO 4O SO TOTAL LENGTH (mm) 60 70 FIGURE 2. Size frequency distribution of specimens of Crangon jranciscorum collected in the Suisun Bay, Sacramento-San Joaquin River study area, November, 1977-October, 1978. Dark bars indicate num
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 180 1 04- 1 o4- 20 -, 10 - o 40 - JO - 20- 10- o in 20- u. 0 10 - a 30 -i CLIFFORD A. SIEGFRIED Crangon ftancltccrufn October 1977 n= 29 NovlmMf 1977 n = 8 Januory-February l»78 11*18 March 1978 n=6 April 1978 Junt 1978 n • 258 111 July 1978 n« 222. S«pttmt>«r 1978 n = 177 Oclob«t 1978 n= 207 20 SO 4O SO TOTAL LENGTH (mm) 60 70 FIGURE 2. Size frequency distribution of specimens of Crangon jranciscorum collected in the Suisun Bay, Sacramento-San Joaquin River study area, November, 1977-October, 1978. Dark bars indicate number of males, hatched bars indicate number of females, and open bars indicate number of juveniles or undetermined individuals measured. The si/! frequency distribution of specimens of P. macro dactylus collected in the study area is presented in Figure 4. Summer is the main recruitment period for P. tnacrodai tylns in the delta. Ovigerous females were collected from May through August, with a few collected in April and September. P. macro dactylus larvae are planktonic and are very abundant in the plankton of the delta during summer. Larval specimens of P. macrodactylus are photopositive (Little, 1969) but become more photonegative as they develop (Siegfried ct a/., 1978).. 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. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
