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Cynthia D. Shultz 

 Bernard M. Ito 



Southwest Fisheries Center Honolulu Laboratory 

 National Marine Fisheries Service. NOAA 

 P.O. Box 3830 

 Honolulu. HI 96812 



RECENT RECORDS OF CALUNECTES DANAE 



AND CALUNECTES AlARGINATUS (DECAPODA: 



PORTLNIDAE) FROM NORTH CAROLINA 



WITH ENVIRONMENTAL NOTES 



Temperature and latitudinal distributions of the 

 genus Callinectes are best known for C. sapidus 

 Rathbun (Williams 1974; Norse 1977). The north- 

 ern limits ofC. danae Smith andC. marginatus A. 

 Milne Edwards are listed as Bermuda and south- 

 ern Florida, with one specimen of C. marginatus 

 from North Carolina regarded as a temporary 

 range extension (Williams 1974). We report the 

 taking of two specimens of C. danae and six speci- 



mens of C. marginatus by 12.2-m (40-ft) otter 

 trawl in and near the Cape Fear River estuary, 

 N.C. All specimens have been deposited at the 

 Institute of Marine Sciences, University of North 

 Carolina, Morehead City, N.C. Measurements 

 listed are of carapace width in millimeters includ- 

 ing lateral spines. 



Two specimens of C. danae (UNC 2766, d 115; 

 6 113), 1 C. marginatus (UNC 2765, i 97), 6 C. 

 ornatus Ordway, and 7 C. similis Williams were 

 captured by trawl in the Intracoastal Waterway 

 on 19 September 1977, just south of the Carolina 

 Beach Inlet, on a sand-shell bottom 4 m deep in 

 water of 36%o surface salinity and 26°C. Four C. 

 marginatus (UNC 2763, 9 92; 6 103; 6 62; 6 81) 

 were also caught at this location on 14 September 

 1977, along with 30 C. urnatus, 35 C. similis, and 

 10 C. sapidus. Bottom salinity was 20%o, and bot- 

 tom temperature was 26.5°C. Several other small 

 specimens of C. marginatus (40-60 mm) were ob- 

 served, but not retained in this trawl. A sixth 

 specimen ofC. marginatus (UNC 2764, 2 91), 1 C. 

 ornatus, 30 C. similis, and 20 C. sapidus were 

 collected in the intake canal of the Carolina Power 

 and Light Company generating plant in the Cape 

 Fear River estuary west of buoy 19 on 11 October 

 1977. Bottom type was silty-sand at depth of 4 m. 

 Surface salinity was 31%o and surface water tem- 

 perature was 17°C. 



The present record of C. danae represents a 

 northward range extension of 1,000 km, from Bis- 

 cayne Bay, Fla., to the Cape Fear River. Williams 

 (1974) noted that it occurs in a wide range of 

 salinities and habitats. However, Norse ( 1977) be- 

 lieved C. danae prefers lower salinities, from 

 studies in the Caribbean. 



The six specimens of C. marginatus bring the 

 total recorded in North Carolina and north of 

 southern Florida to seven. Shallow environments 

 over a wide range of substrates are preferred in a 

 salinity range of 19-32%o and temperature range 

 of 22°-30°C (Williams 1974). Norse (1974) has in- 

 ferred a preference for higher salinities by C. mar- 

 ginatus; note, we obtained four of the six speci- 

 mens at 20%o and a fifth was captured inside the 

 Cape Fear estuary where salinities fluctuate 

 widely. 



Callinectes danae, C. marginatus, and C. or- 

 natus, with the exception of two specimens of the 

 latter from Charleston, S.C., are now recorded from 

 Florida, North Carolina, and Bermuda. Another 

 species which occurs in Florida and Bermuda, C. 

 exasperatus Gerstaecker, has yet to be taken in 



fishery BL'LLETIN vol 76.no 4.1979, 



879 



