. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PEA CRAP, DISTRIBUTION AND ABl'XDANCK 483 101 BOGUE SOUND MIDDLE I EAST 3735 scallops 3275 scallops WEST 1110 scallops 10 Kilometers. FIGURE 1. Collection sites in Bogue Sound, North Carolina. Sites of plankton collections and salinity measurements are: 1, 3, 4, 7, 8, 10, 12, 13. Sites of quadrat sampling are: 2, 3, 5, 6, 7, 8, 9, 12. Sites of gridded scallop beds are: 3, 4, 7, 8, 9, 10, 12, 13. of total number of zoeae per tow was made from the ratio picked volume to total volume of sample. Distribution and abundance j post
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PEA CRAP, DISTRIBUTION AND ABl'XDANCK 483 101 BOGUE SOUND MIDDLE I EAST 3735 scallops 3275 scallops WEST 1110 scallops 10 Kilometers. FIGURE 1. Collection sites in Bogue Sound, North Carolina. Sites of plankton collections and salinity measurements are: 1, 3, 4, 7, 8, 10, 12, 13. Sites of quadrat sampling are: 2, 3, 5, 6, 7, 8, 9, 12. Sites of gridded scallop beds are: 3, 4, 7, 8, 9, 10, 12, 13. of total number of zoeae per tow was made from the ratio picked volume to total volume of sample. Distribution and abundance j post-lar-cal P. uiacnlatiis Post-larval crabs occur in scallops, so seasonal abundance and distribution of these stages was studied by collecting scallops from various areas in the sound from 1968 to 1970. Scallops were collected by hand or with a small dredge from shallow-water grass beds. Scallops were taken to the laboratory, measured, opened and inspected for crabs. Crabs were measured and life-cycle stage determined. Seminal receptacles of all females were dissected and smear mounts examined for presence of sperm. Scallop distribution and abundance The possibility that crab distribution may be controlled by the abundance of scallops arose early in this study and two methods were used to test this theory. Transects. Eight locations (Fig. 1, Sites 2, 3, 5, 6, 7, 8, 9, 12) where scallops were known to occur were chosen and a series of transects made at each site. All transects ran from low tide mark on the north shore to waist deep water. One- square-meter quadrats were cleared every 5 m and scallops counted. Some scallops were taken back to the laboratory for further examination and crabs were noted. Presence or absence of a grass bottom was recorded for each quadrat. Grids. To further assess scallop density and total numbers, eight scallop beds were gridded and compared (Fig. 1. Sites 3, 4, 7, 8. 9, 10, 12, 13). These beds. Please note that these images are extracted from scann
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
