STATE OF NORTH CAROLINA R/V CAROLINA COAST
PAMLICO-ALBEMARLE SOUNDS SURVEY September 1987 Cruise Report
Prepared by
C. Dianne Stephan David W. Moye Steven K. Strasser
North Carolina Department of Natural Resources and Community Development Division of Marine Fisheries P. 0. Box 769 Morehead City, NC 28557
March 1988 The North Carolina Division of Marine Fisheries' R/V CAROLINA COAST departed Morehead City, North Carolina, on 16 September 1987 for the third quarterly cruise of the Pamlico-Albemarle Sounds Survey. The Survey is designed to provide a long-term fishery-independent database for the waters of Pamlico Sound, eastern Albemarle Sound and the lower Neuse and Pamlico rivers (Figure 1). For specific objectives and methodology, see the Pamlico-Albemarle Sounds Survey March 1987 Cruise Report. Fifty-two stations were sampled during September 16-18 and September 21-24 (Figure 2). During the two week sampling period water temperature ranged from 24.7°C to 28.2°C on the bottom and 24.7°C to 29.5°C on the surface (Table 1). Mean salinity appeared much lower in Albemarle Sound and slightly lower in the Pamlico River than in the other strata. Mean temperature values appeared similar throughout the strata (Table 2). Eighty-three species were encountered over the cruise (Table 3); however, four commercially important species, spot (Leiostomus xanthurus), croaker (Micropogonias undulatus), blue crab (Callinectes sapidus), and weakfish (Cynoscion regalis) accounted for the greatest number of individuals. Aside from abundant catches of tunicates, these 4 species also comprised the greatest total biomass. Largest catches of spot occurred in both Albemarle Sound strata (Table 5). Spot were noticeably less abundant in the Pamlico Sound substrata west of Bluff Shoal (PDW and PSW, Tables 4 and 5). Two cohorts of spot appear to be represented in Figure 3. Croaker was the most abundant species in every strata and substrata except PR and AS, where they ranked third and second, respectively (Table 4). Greatest total numbers of croaker were found at Albemarle Sound stations (strata AS and AD, Table 5). Only one cohort of croaker is apparent in Figure 4. Of all the commercially important species, blue crab was the most widely distributed, occurring in 45 stations, or 87% of all stations sampled. The greatest mean number of individuals per station appeared to occur in Albemarle Sound (Table 4). They were also abundant in all Pamlico Sound substrata. Length-frequency data showed the possibility of two cohorts of blue crab (Figure 5). 2
The greatest catches of weakfish occurred in Pamlico Sound substrata east of Bluff Shoal (PSE and POE, Table 5) while the greatest mean number of individuals per station appeared to be in Albemarle Sound (Table 4). Relatively few weakfish were captured in Pamlico Sound west of Bluff Shoal (PSW and POW). Weakfish exhibited one strong cohort with a total of 4 possible cohorts (Figure 6). Other commercially important finfish which were present in relatively great numbers included summer flounder (Paralichthys dentatus), southern flounder (Paralichthys lethostigma), southern kingfish (Menticirrhus americanus), Spanish mackerel (Scomberomorus maculatus), and bluefish (Pomatomus saltatrix). Summer flounder was the sixth most abundant species in total number (Table 3), and was widely distributed through the Pamlico and Albemarle strata (Table 5). The greatest mean number of summer flounder per station was found in Albemarle Sound strata (AS and AD). Summer flounder exhibited a unimodal length-frequency distribution (Figure 7). The greatest mean number of individuals per station of southern flounder occurred in the PSW strata (Table 4). Southern flounder had a large size range, but showed only one obvious cohort in their length-frequency distribution (Figure 8). Relatively few southern kingfish were caught in September, and were dispersed among only three substrata, POE, POW, and PSW. The length-frequency distribution of these individuals did not depict a significant pattern (Figure 9). Conversely, relatively numerous Spanish mackerel were present for the first time during the September cruise (Table 3). This species was present in every strata except for AD and PR. The length-frequency distribution did not show any conclusive cohorts (Figure 10). Only ten bluefish were encountered in September (Table 5), ranging in size from 190 to 380 mm (Figure 11). Three species of commercially-important shrimp were encountered in September, including pink shrimp (Penaeus duorarum), brown shrimp(£. aztecus), and white shrimp(£. setiferus), in order of abundance (Table 3). The greatest mean number of individuals per station for all three species appeared to occur in Albemarle Sound (Table 4). Unimodal length-frequency distributions were present for each species (Figures 12, 13, and 14). A number of commercially-important juvenile reef and pelagic species were present during this quarter. These were found in one or more of three Pamlico Sound substrata (POW, PSE, and POE) and included cobia (Rachycentron canadum), blue runner (Caranx crysos), jack crevalle (Caranx hippos), king 3 mackerel Scomberomorus cavalla), gag grouper (Mycteroperca microlepis), black sea bass (Centropristis striata), Warsaw grouper (Epinephelus nigratus), red snapper (Lutjanus campechanus), grey snapper (Lutjanus griseus), and lane snapper (Lutjanus syngris). 4
CRUISE PARTICIPANTS
Dianne Stephan, Chief Scientist, DMF Morehead City District, Morehead City, NC David Moye, Chief Scientist, DMF Washington District, Washington, NC Beth Burns, Marine Biologist I, DMF Elizabeth City District, Manteo, NC Jack Guthrie, Fisheries Technician, DMF Morehead City District, Morehead City, NC Paul Moore, Fisheries Technician, DMF Morehead City District, Morehead City, NC Steve Strasser, Fisheries Technician, DMF Washington District, Washington, NC Lele Tison, Fisheries Technician, DMF Washington District, Washington, NC Mike Pulley, Fisheries Technician, DMF Washington District, Washington, NC Robert Guthrie, Captain, DMF Morehead City District, Morehead City, NC Mike Guthrie, Mate, DMF Morehead City District, Morehead City, NC Table 1. Environmental data including station location, date and time of sampling, depth, surface and bottom salinity and surface and bottom temperature for the September, 1987, Paml i co-/\ 1bemarl e sounds cruise of the R/V CAROLINA COAST.
*AREA LATITUDE LONGITUDE STATION DAY TIME DEPTH SURFACE BOTTOM SURFACE BOTTOM ( M) SALINITY SALINITY TEMPERATURE TEMPERATLIRF
Table 2. Summary of environmental parameters for strata/substrata by station for the September, 1987, Pamlico-Albemarle sounds cruise of the R/V CAROLINA COAST.
Mean Mean sal i nit:t Mean temEerature depth Surface Bottom Surface Bottom Strata/substratum (m) (pEt) (Ept) ( OC) (OC)
NR Neuse River 4.9 17.0 16.9 27.5 27.1 PR Pamlico River 5.1 11.4 14.5 28.2 27.5 AS Albemarle Sound <3.6 m 2.4 8.0 8.2 24.7 24.7 AD Albemarle Sound =>3.6 m 4. 7 4.5 4.7 25.2 25.0 PSE Pamlico Sound <3.6 m 3.0 19.8 20.3 27.3 27.1 East of Bluff Shoal PSW Pamlico Sound <3.6 m 3.1 18.5 17.2 27.7 25.8 West of Bluff Shoal POE Pamlico Sound =>3.6 m 4.9 19.7 20.4 26.4 26.2 East of Bluff Shoal POW Pamlico Sound =>3.6 m 5.3 18.3 18.8 28.0 27.8 West of Bluff Shoal 7
Table 3. Total number and biomass of organisms by species for the September, 1987, Pamlico-Albemarle sounds cruise of the R/V CAROLINA COAST.
Total Total biomass Species Common name number (kg) Micropogonias undulatus croaker 7,904 312.686 Leiostomus xanthurus spot 4,012 182.413 Callinectes sapidus blue crab 1,425 125.436 Cynoscion regalis weakfish 1,029 46.207 Anchoa mitchilli bay anchovy 866 0.966 Paralichthys dentatus summer flounder 513 33.324 Trinectes maculatus hogchoker 481 17.381 Chaetodipterus faber Atlantic spadefish 250 8.111 Anchoa hepsetus striped anchovy 239 2.357 Bairdiella chrysoura silver perch 218 13.906 Peprilus alepidotus harvestfish 198 3.138 Callinectes similis lesser blue crab 195 4.012 Penaeus duorarum pink shrimp 183 2.351 Synodus foetens inshore lizardfish 166 12.446 Portunus spinimanus spiny-handed crab 164 0.982 Orthopristis chrysoptera pigfish 152 7.167 Paralichthys lethostigma southern flounder 132 25.641 Crassostrea virginica oyster 129 30.659 Penaeus aztecus brown shrimp 93 2.112 Opisthonema oglinum Atlantic thread herring 86 2.249 Brevoortia tyrannus Atlantic menhaden 62 4.247 Symphurus plagiusa blackcheek tonguefish 59 1.054 Lagodon rhomboides pinfish 47 4.958 Monacanthus hispidus planehead filefish 45 2.519 Portunus gibbessi portunus crab 42 0.228 Menticirrhus americanus southern kingfish 41 2.730 Scomberomorus maculatus Spanish mackerel 29 2.518 Penaeus setiferus white shrimp 22 0.674 Selene vomer lookdown 21 0.692 Loligo peail"i Atlantic squid 20 0.212 Squi 11 a empusa mantis shrimp 19 0.134 Sphoeroides maculatus northern puffer 19 1.348 Citharichthys spilopterus bay whiff 18 0.452 Prionotus carolinus northern searobin 15 0.200 Eucinostomus ~ silver jenny 14 0.245 Etropus crossotus fringed flounder 13 0.173 Trachinotus carolinus Florida pompano 11 3.210 Lutjanus synagris lane snapper 11 0.173 Pomatomus saltatrix bluefish 10 4.020 Aluterus schoepfi orange filefish 9 0.155 Rhinoptera bonasus cownose ray 8 44.500 Dasyatis sabina Atlantic stingray 7 8. 580 Libinia dubia lesser spider crab 5 0.070 Prionotus-eYOlans striped searobin 5 0.463 Caranx hippos crevalle jack 5 0.780 Hippocampus erectus lined seahorse 4 0.028 Prionotus tribulus bighead searobin 4 0.162 Mycteroperca microlepis gag 4 0.705 Caranx crysos blue runner 4 0.016 8
Table 3. (Continued) Total Total biomass Species Common name number (kg)
Chloroscombrus chrysurus Atlantic bumper 4 0.013 Opsanus tau oyster toadfish 3 0.302 Rachycentron canadum cobia 3 0.616 Lutjanus griseus grey snapper 3 0.035 Trichiurus lepturus Atlantic cutlassfish 3 0.880 Peprilus triacanthus butterfish 3 0.520 Chilomycterus schoepfi striped burrfish 3 0. 710 Lolliguncula brevis thumbstall squid 2 0.020 Syngnathus louisianae chain pipefish 2 0.100 Prionotus scitulus leopard searobin 2 0.040 Centropristis striata black sea bass 2 0.200 Cynoscion nebulosus spotted seatrout 2 0.180 Paralichthys albigutta Gulf flounder 2 0.400 Dasyatis sayi bluntnose stingray 2 15.500 Panopeus spp. black fingered crab 1 0.010 Dorosoma cepedianum gizzard shad 1 0.080 Syngnathus fuscus northern pipefish 1 0.010 Prionotus spp. sea robin 1 Epinephelus nigritus warsaw grouper 1 0.300 Selene setapinnis Atlantic moonfish 1 Lutjanus campechanus red snapper 1 0.020 Eucinostomus spp. mojarra 1 0.010 Larimus fasciatus banded drum 1 0.030 Mugi 1 cepha 1us striped mullet 1 0.100 Astroscopus guttatus northern stargazer 1 0.170 Scomberomorus cavalla king mackerel 1 Citharichthys macrops spotted whiff 1 0.020 Caretta caretta loggerhead turtle 1 Dasyatis americana southern stingray 1 0.950 Cnidaria jellyfish 30.400 Scleractinia stony cora 1 0.250 Geukensia demissa Atlantic ribbed mussel 2.100 Bryozoa bryozoans 9.150 Ascidicea tunicate 1,398.020 9
Table 4. Species composition, mean number of individuals per station, total number of individuals by stratum/substratum, mean biomass per station and total biomass by stratum/substratum for the September, 1987, Pamlico-Albemarle sounds cruise of the R/V CAROLINA COAST.
Total Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata seecies [station substrata (kg) (kg) STRATA = Albemarle Deep ( 2 stations) Micropogonias undulatus 1,117.50 2,235 56.95 113.900 Leiostomus xanthurus 273.00 546 13.07 26.130 Callinectes sapidus 247.00 494 19.94 39.880 Trinectes maculatus 92.50 185 3.20 6.400 Cynoscion regalis 91.00 182 4.08 8.160 Paralichthys dentatus 20.00 40 0.89 1. 788 Bairdiella chrysoura 15.50 31 0.99 1.984 Brevoortia tyrannus 11.50 23 0.70 1.407 Penaeus aztecus 7.50 15 0.12 0.240 Anchoa mitchilli 3.00 6 0.01 0.011 Penaeus duorarum 2.50 5 0.02 0.048 Penaeus setiferus 2.50 5 0.05 0.107 Paralichthys lethostigma 1. 50 3 0.96 1.920 Chaetodipterus faber 1.00 2 0.01 0.015 Monacanthus hispidus 1.00 2 0.07 0.130 Dorosoma cepedianum 0.50 1 0.04 0.084 Scomberomorus maculatus 0.50 1 <0.01 0.008
STRATA = Albemarle Shallow (2 stations) Leiostomus xanthurus 443.00 886 13.53 27.070 Micropogonias undulatus 403.50 807 13.38 26.750 Callinectes sapidus 78.50 157 4.70 9.400 Trinectes maculatus 55.00 110 1.57 3.140 Cynoscion regalis 52.50 105 3.10 6.200 Paralichthys dentatus 31.00 62 1.10 2.200 Crassostrea virginica 28.00 56 1.99 3.980 Penaeus duorarum 10.50 21 0.05 0.100 Chaetodipterus faber 9.00 18 0.10 0.200 Brevoortia tyrannus 8.00 16 0.35 0.700 Bairdiella chrysoura 7.50 15 0.57 1.130 Paralichthys lethostigma 3.50 7 0.98 1.950 Penaeus aztecus 2.50 5 0.03 0.050 Synodus foetens 1.50 3 0.18 0.350 Penaeus setiferus 1.00 2 0.02 0.035 Scomberomorus maculatus 1.00 2 0.08 0.150 Orthopristis chrysoptera 0.50 1 0.10 0.200 Lagodon rhomboides 0.50 1 0.10 0.200 Dasyatis sabina 0.50 1 1.15 2.300 10 Table 4. (Continued) Total Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata Species /station substrata (kg) (kg) STRATA = Neuse River (2 stations) Peprilus alepidotus 1.00 2 <0.01 0.005 Opsanus tau 0.50 1 0.02 0.040 Micropogonias undulatus 0.50 1 0.02 0.035 Scomberomorus maculatus 0.50 1 0.20 0.400 Geukensia demissa 1.05 2.100 STRATA= Pamlico River (2 stations) Crassostrea virginica 7.50 15 0.53 1.050 Callinectes sapidus 2.00 4 0.80 1.600 Micropogonias undulatus 0.50 1 0.02 0.046 Cnidaria 0.45 0.900 Ascidicea 0.09 0.175 SUBSTRATA= Pamlico Shallow East (8 stations) Micropogonias undulatus 67.38 539 2.32 18.560 Cynoscion regalis 38.75 310 1.39 11.100 Leiostomus xanthurus 32.88 263 2.29 18.330 Anchoa mitchilli 16.88 135 0.01 0.092 Orthopristis chrysoptera 16.25 130 0.70 5. 571 Callinectes sapidus 12.50 100 1.37 10.920 Bairdiella chrysoura 11.63 93 0.79 6.300 Paralichthys dentatus 8.25 66 0.63 5.050 Chaetopidterus faber 6.38 51 0.27 2.178 Lagodon rhomboides 5.00 40 0.51 4.058 Crassostrea virginica 14.88 39 0.20 1.600 Synodus foetens 3.13 25 0.28 2.257 Anchoa hepsetus 2.50 20 0.02 0.123 Trinectes maculatus 2.25 18 0.10 0.792 Paralichthys lethostigma 1.88 15 0.23 1.800 Portunus gibbessi 1. 75 14 0.01 0.092 Opisthonema oglinum 1. 75 14 0.03 0.249 Eucinostomus ~ 1.63 13 0.03 0.200 Sphoeroides maculatus 1.63 13 0.12 0.948 Penaeus duorarum 1. 50 12 0.03 0.241 Peprilus alepidotus 1. 50 12 0.05 0.420 Etropus crossotus 1.13 9 0.01 0.119 Monacanthus hispidus 0.88 7 0.04 0.350 Aluterus schoepfi 0.75 6 0.01 0.104 Callinectes similis 0.63 5 0.02 0.185 Penaeus aztecus 0.50 4 0.01 0.072 Brevoortia tyrannus 0.38 3 0.02 0.190 Rachycentron canadum 0.38 3 0.08 0.616 Selene vomer 0.38 3 0.02 0.163 11
Table 4. (Continued) Tot a 1 Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata SQecies /station substrata (kg) (kg) Penaeus setiferus 0.25 2 0.01 0.046 Portunus SQinimanus 0.25 2 <0.01 0.010 Prionotus scitulus 0.25 2 <0.01 0.039 Mycteroperca microlepis 0.25 2 0.05 0.385 Caranx hippos 0.25 2 0.04 0.320 Trachinotus carolinus 0.25 2 0.07 0.550 Paralichthys albigutta 0.25 2 0.05 0.405 Chilom~cterus schoeQfi 0.25 2 0.05 0.430 Rhinoptera bonasus 0.25 2 0.69 5.500 Lolliguncula brevis 0.13 1 <0.01 0.018 Libinia dubia 0.13 1 0.01 0.065 Opsanus tau 0.13 1 0.03 0. 250 Syngnathus louisianae 0.13 1 0.01 0.090 Prionotus carolinus 0.13 1 <0.01 0.029 CentroQristis striata 0.13 1 0.02 0.150 Epinephelus nigritus 0.13 1 0.04 0.300 Pomatomus saltatrix 0.13 1 0.06 0.450 Chloroscombrus chr~surus 0.13 1 <0.01 0.001 Lutjanus campechanus 0.13 1 <0.01 0.016 Lutjanus synagris 0.13 1 <0.01 0.010 Astroscopus guttatus 0.13 1 0.02 0.170 Scomberomorus maculatus 0.13 1 0.03 0.200 Citharichth~s spilopterus 0.13 1 <0.01 0.013 Symphurus plagiusa 0.13 1 <0.01 0.025 Das~atis sabina 0.13 1 0.13 1.000 Bryozoa 0.86 6.900 Ascidicea 16.14 129.100
SUBSTRATA = Pamlico Shallow West (6 stations) Micropogonias undulatus 51.83 311 2.27 13.607 Callinectes sapidus 23.17 139 3.31 19.875 Paralichthys dentatus 12.50 75 0.87 5.223 Chaetodipterus faber 10.50 63 0.32 1.924 Paralichthys lethostigma 7.17 43 0.90 5.396 Anchoa hepsetus 4.17 25 0.04 0.260 Peprilus alepidotus 3.50 21 0.06 0.338 Trinectes maculatus 3.33 20 0.17 1.000 Leiostomus xanthurus 3.00 18 0.12 0.723 Opisthonema oglinum 2.33 14 0.04 0.210 Menticirrhus americanus 2.33 14 0.24 1.415 Synodus foetens 1.67 10 0.08 0.477 Scomberomorus maculatus 1. 50 9 0.10 0.586 Trachinotus carolinus 1.33 8 0.42 2.500 Penaeus duorarum 1.00 6 0.01 0.077 Rhinoptera bonasus 1.00 6 6.50 39.000 12
Table 4. (Continued) Tota 1 Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata Species /station substrata (kg) (kg)
Anchoa mitchilli 0.67 4 <0.01 0.005 Hippocampus erectus 0.67 4 <0.01 0.028 Sphoeroides maculatus 0.67 4 0.02 0.140 Crassostrea virginica 0.50 3 3.93 23.600 Selene vomer 0.50 3 0.03 0.175 Monacanthus hispidus 0.50 3 0.02 0.114 Libinia dubia 0.33 2 <0.01 0.003 Citharichth~s spilopterus 0.33 2 0.01 0.073 Dasyatis sabina 0.33 2 0.42 2.500 Dasyatis sayi 0.33 2 2.58 15.500 Opsanus tau 0.17 1 <0.01 0.012 Prionotus spp. 0.17 1 <0.01 0.002 Prionotus evolans 0.17 1 <0.01 0.010 Bairdiella chrysoura 0.17 1 0.01 0.052 Chilom~cterus schoepfi 0.17 1 0.05 0.280 Cnidaria 1.67 10.000 Ascidicea 79.83 479.000
SUBSTRATA = Pamlico Deep East (19 stations) Micropogonias undulatus 195.16 3708 6. 58 124.954 Leiostomus xanthurus 118.47 2251 5.63 107.010 Anchoa mitchilli 30.79 585 0.03 0.617 Callinectes sapidus 23.16 440 2.01 38.258 Cynoscion regalis 22.16 421 1.00 19.040 Paralichthys dentatus 13.74 261 0.92 17. 570 Callinectes similis 9.68 184 0.19 3.675 Portunus spinimanus 8.47 161 0.05 0.942 Anchoa hepsetus 8.32 158 0.09 1. 728 Trinectes maculatus 7.74 147 0.32 6.021 Chaetodipterus faber 5.68 108 0.19 3.698 Synodus foetens 5.58 106 0.43 8.258 Penaeus duorarum 4.53 86 0.07 1.256 Bairdiella chr~soura 4.00 76 0.23 4.390 Opisthonema oglinum 2.89 55 0.06 1.059 Penaeus aztecus 2.84 54 0.07 1.349 Paralichthys lethostigma 2.74 52 0.66 12.575 Symphurus plagiusa 1.63 31 0.04 0.769 Portunus gibbessi 1. 42 27 0.01 0.133 Peprilus alepidotus 1. 42 27 0.06 1.145 Monacanthus hispidus 1.16 22 0.06 1.103 Brevoortia tyrannus 1.05 20 0.10 1.950 Orthopristis chrysoptera 0.84 16 0.06 1.114 Lo li go pea 1 i i 0.63 12 0.01 0.148 Penaeus setiferus 0.63 12 0.02 0.426 13
Table 4. (Continued) Total Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata Species /station substrata (kg) (kg) Citharichth;iS SQiloQterus 0.63 12 0.02 0.304 Selene vomer 0.53 10 0.01 0.144 Menticirrhus americanus 0.53 10 0.04 0.743 Lutjanus S;inagris 0.42 8 0.01 0.123 Crassostrea virginica 0.37 7 0.02 0.385 Pomatomus saltatrix 0.37 7 0.12 2.370 Squilla emQusa 0.32 6 0.01 0.103 Lagodon rhomboides 0.32 6 0.04 0.700 Scomberomorus maculatus 0.32 6 0.04 0.711 Prionotus tribulus 0.21 4 0.01 0.162 EtroQUS crossotus 0.21 4 <0.01 0.054 Prionotus evolans 0.16 3 0.02 0.450 Caranx hippos 0.16 3 0.02 0.460 Lutjanus griseus 0.16 3 <0.01 0.035 Das;iatis sabina 0.16 3 0.15 2.780 Prionotus carolinus 0.11 2 <0.01 0.071 Trichiurus lepturus 0.11 2 <0.01 0.380 PeQrilus triacanthus 0.11 2 0.02 0.320 Aluterus schoeQfi 0.11 2 <0.01 0.036 Sphoeroides maculatus 0.11 2 0.01 0.260 Lolliguncula brevis 0.05 1 <0.01 0.004 S;ingnathus fuscus 0.05 1 <0.01 0.010 Syngnathus louisianae 0.05 1 <0.01 0.010 Centropristis striata 0.05 1 <0.01 0.052 M;icteroperca microlepis 0.05 1 0.01 0.120 Trachinotus carolinus 0.05 1 0.01 0.160 Eucinostomus spp. 0.05 1 <0.01 0.013 Eucinostomus ~ 0.05 1 <0.01 0.045 C;inoscion nebulosus 0.05 1 <0.01 0.080 Scomberomorus cavalla 0.05 1 <0.01 0.004 Caretta caretta 0.05 1 Das;iatis americana 0.05 1 0.05 0.950 Scleractinia 0.01 0.250 Bryozoa 0.01 0.100 Ascidicea 20.49 389.250 SUBSTRATA = Pamlico Deep West (11 stations) Micropogonias undulatus 27.45 302 1.35 14.834 Anchoa mitchilli 12.36 136 0.02 0.241 Peprilus alepidotus 12.36 136 0.11 1.230 Callinectes sapidus 8.27 91 0.50 5.503 Penaeus duorarum 4.82 53 0.06 0.629 Leiostomus xanthurus 4.36 48 0.29 3.150 Anchoa hepsetus 3.27 36 0.02 0.246 S;imphurus plagiusa 2.45 27 0.02 0.260 14
Table 4. (Continued) Total Total number Mean biomass Mean number individuals biomass -strata or individuals -strata or /station substrata Species /station substrata (kg) (kg) Synodus foetens 2.00 22 0.10 1.104 Menticirrhus americanus 1.55 17 0.05 0.572 Penaeus aztecus 1.36 15 0.04 0.401 Sguilla empusa 1.18 13 <0.01 0.031 Prionotus carolinus 1.09 12 0.01 0.100 Paralichthys lethostigma 1.09 12 0.18 2.000 Cynoscion regalis 1.00 11 0.16 1.707 Monacanthus hispidus 1.00 11 0.07 0.822 Crassostrea virginica 0.82 9 <0.01 0.044 Scomberomorus maculatus 0.82 9 0.04 0.463 Paralichthys dentatus 0.82 9 0.14 1.493 Loligo pealii 0.73 8 0.01 0.064 Chaetodipterus faber 0.73 8 0.01 0.096 Callinectes similis 0.55 6 0.01 0.152 Selene vomer 0.45 5 0.02 0.210 Orthopristis chrysoptera 0.45 5 0.03 0.282 Caranx crysos 0.36 4 <0.01 0.016 Opisthonema oglinum 0.27 3 0.07 0.731 Chloroscombrus chr~surus 0.27 3 <0.01 0.012 Citharichth~s spilopterus 0.27 3 0.01 0.062 Libinia dubia 0.18 2 <0.01 0.002 Pomatomus saltatrix 0.18 2 0.11 1.200 Lutjanus synagris 0.18 2 <0.01 0.040 Bairdiella chrysoura 0.18 2 <0.01 0.050 Penaeus setiferus 0.09 1 0.01 0.060 Portunus gibbessi 0.09 1 <0.01 0.003 Portunus spinimanus 0.09 1 <0.01 0.030 Panopeus spp. 0.09 1 <0.01 0.008 Prionotus evolans 0.09 1 <0.01 0.003 Mycteroperca microlepis 0.09 1 0.02 0.200 Selene setapinnis 0.09 1 <0.01 0.002 Cynoscion nebulosus 0.09 1 0.01 0.100 Larimus fasciatus 0.09 1 <0.01 0.027 Mugil cepha 1us 0.09 1 0.01 0.100 Trichiurus lepturus 0.09 1 0.05 0.500 Peprilus triacanthus 0.09 1 0.02 0.200 Citharichth~s macrops 0.09 1 <0.01 0.025 Trinectes maculatus 0.09 1 <0.01 0.028 Aluterus schoepfi 0.09 1 <0.01 0.015 Cnidaria 1.77 19.500 Bryozoa 0.20 2.150 Ascidicea 36.41 400.500 Table 5. Total number of individuals of selected target species by station for September, 1987, Pamlico-Albemarle sounds cruise of the R/V CAROLINA COAST.
Micro:Qo- Para- Station Strata/ Leiostomus gonias Callinectes CY!loscion Paralichthys lichthys Pomatomus Penaeus Menticirrhus number substratum xanthurus undulatus saQidus regal is lethosti9!!!a den tat us saltatrix duorarum americanus 0043P PR 1 2 0047P PR 2 0056N NR 0078N NR 1 0066S POE 135 78 16 3 41 1 OOA5S POE 175 599 7.1 1 2 36 4 Ol02S PSE 31 2 12 01038 PSE 228 539 20 310 13 4 9 01118 POE 183 39 8 2 12 1 1 1 01148 POE 125 701 26 242 7 11 22 01158 POE 219 160 20 4 7 9 1 7 1 01308 POE 49 31 1 1 0164S P5E 4 5 9 01998 POE 74 12 27 1 10 2 02095 POE 52 219 9 7 5 3 5 03045 POE 64 226 11 3 3 4 6 03128 POE 127 167 71 83 4 5 4 7 03305 PDE 11 78 11 2 2 3 2 1 03748 POE 461 471 16 42 6 16 1 03898 PDE 435 446 11 29 2 7 6 04198 POE 8 56 8 6 4 11 6 1 04438 PSE 12 8 04808 POE 65 31 11 04938 POE 181 373 68 16 1 1 05485 PSW 11 298 24 17 12 3 5 Of>46S PDW 4 144 17 1 12 4 4 0648S PSW 1 34 10 17 3 06538 P5W 18 6 7 1 06548 PSW 6 12 52 6 32 8
06588 PSW 1 11 1 1 ~ 06605 PSE 6 9 "' 06628 POE 8 7 07288 POW 1 2 07868 POE 1 18 12 1 4 8 2 2 08158 POE 17 1 20 3 08728 POW 1 13 1 6 Table 5. (Continued)
MicroEo- Para- Station Strata/ Leiostomus gonias Callinectes CY!!oscion Paralichthys lichthys Pomatomus Penaeus Menticirrhus number substratum xanthurus undulatus sapidus reqalis lethostiqma dentatus saltatrix duorarum americanus 0882S PSE 5 1 5 1 1 0900S PSW 3 6 0916S PSE 33 9 09245 PSE 17 1 10 2 0933S PDW 11 09625 PDW 1 09725 PDW 1 3 1 10085 PDW 1 10285 PDW 8 7 18 1 4 1031S PDW 1033S PDW 1 1 2 1044S PDW 36 148 38 8 1 42 2 1169A AS 26 927 191 126 1 33 5 1173A AD 1 233 72 10 1 1182A AD 519 1,075 231 46 2 6 1197A AS 886 807 157 105 7 62 21
,... 0"> 17
River COASTAL NORTH CAROLINA
Paml ico Sound
Northeast
River
•
SCALE:
ro •o to 10 •• •~" ~~--~--~~--~ Fear
Figure 1. Location of the Pamlico Sound - Albemarle Sound area of eastern North Carolina. (;)0 660 850 102S 103S 1110 0 1140 1150 1300
164S ~ (X)
Figure 2. Station locations for Pamlico-Albemarle Sounds Survey, September, 1987. Station suffix indicates stratum as follows: N;Neuse River, P;Pamlico River, AD"Albemarle Sound~3.6m, AS;Albemarle Sound;3.6m, PD;Pamlico Sound :;e3.6m, PS;Pamlico Sound;3.6m. 2090 1990
3040 3120 3300 3740 3890 4435 4190 4800 4930 c_, 6460 648$ 653S 658S 654S 660S
7280 ~8150 ~8825 8720 ~9165
0280 1044B
t
N
>-' N <.0
Figure 2. (Continued) 20
PERC[ NT ~kEQ r~~~ r~~trNT 0 0 0' (>(> () 10 1:0 {.1,)0 () 71 8'1 l _o;.•, •o7 496 10.30 I 3 701 1197 17 " 10 787 \984 •o 9' 'O ~1~0 ,, . 3.<, ::; 130 844 :'8:'H 7:' -140 473 330\ " ,97 "' ~ 150 ~so 3~1 ~)\ t:.J:i. 90 0 160 70 36:'3 1 .B~ 90 ~ 170 37 36b0 O,Q.t, 93 _) 180 59 3719 1 .-49 94 -;i 190 I 31 3850 3.3::' 97 s 200 7• 39:'4 1 .87 99 ,._ 210 19 3943 o.•e 100 220 3944 0.93 100 230 6 3950 &.1~ 100 240 0 3950 o.eo 100 250 0 3950 e.&o 100 260 395f ll.63 100 270 0 3951 0.4)0 100
0 100 200 300 400 500 600 700 800 900 FREQUENCY
Figure 3. Expanded length frequency distribution for spot (Leiostomus xanthurus).
FREQ PE~':ENT r~~o ~~~CENT 100 I COl 0.01 110 31 3:2 .;.,39 0.41 'i' 120 207 239 ::.63 3.04 :::;130 1074 1313 13.64 16.68 ~140 2705 4018 J..4. 36 51 .o4 ;E.150 2351 6369 2'9. 87 80.91 0 160 989 7358 1 :.".56 93.47 ~ 170 3::?8 7686 ".17 97.64 -' 180 56 7742 &.71 98,35 :;;;i1QQ 30 7772 e.Je 98.73 t)200 45 7817 !?.57 99.30 t- Z10 I B 7835 (.::?3 99.~53 220 14 7849 (<_ 1 8 99.71 230 13 7862 E. 17 99.87 240 10 7872 $.13 100.00
0 1000 2000 3000 FREQUENCY
Figure 4. Expanded length frequency distribution for croaker (Micropogonias undulatus). FR(Q r~~o F'fkCENT ~~~t£NT • • 0.09 • 21 t fJ.()7 • • 5 0,:"9 • ,. Jt ! ,90 2 59 90 4.:H 7 ~ ;::!; ., <75 6.:'1 ;::!; 100 :'75 7.JO 20" 129 404 9.4:' 30 I 70 ... 120 5:?4 8. 77 38 (!) 80 z llO 95 ••• 6.94 45 ~,00 78 697 5.70 5t --' 110 t\7 8t< 8.55 59 ;!: 1 20 90 90.11 6.57 66 8130 !27 1031 9.28 75 140 t\6 1147 8.·0 84 1 t2t 1268 8.84 93 66 1334 4.82 97 26 1360 1.90 99 9 1369 0.66 tOO • 1369 0.00 100 0 10 20 30 ~0 50 60 70 80 90 100 110 120 130 FREQUENCY
Figure 5. Expanded length frequency distribution for blue crab (Callinectes sapidus).
FREQ CUH. PERCENT CUH. FREQ PERCENT 30 0 • o.oo • 40 t 9.10 • &o t 2 G.te • 60 3 s 0.30 s •• 0.51 27 37 2.74 4 t 3 50 1. 3:> 5 15 65 1.52 7 2 67 0.20 7 78 1 .12 8
07" 105 ~- 74 79 8.03 "\9 90 274'"' 9. tS 28 122 396 12.40 40 216 612 21 .95 60
222 834 ~2.56 85 89 923 9.04 94 9 932 0.91 95 • 932 o.oo 95 7 939 0.71 95 15 954 t .52 97 965 1.12 98 "7 972 0.71 99 3 975 0.30 99 2 977 0.20 99 3 980 0.30 100 0 980 0.00 100 :! 982 o.::o \00 310 2 984 0.20 100 984 o.oo 100 320~------~------~------~ • 0 100 200 300 FREQUENCY
Figure 6. Expanded length frequency distribution for weakfish (Cynoscion regalis). 22
FREQ CUH. f'Ef
Figure 7. Expanded length frequency distribution for summer flounder (Paralichthys dentatus). 23
rR£0 f'ERCENT C~H. r~~~~ f' f Figure 8. Expanded length frequency distribution for southern flounder (Paralichthys lethostigma). 24 FP.:FQ Clll'l. PERCENl f:l1/'l. F"F![ Q PEkCfNl -40 0 0 (1. (/f! 0 50 " " 26.8] 07 60 0 " o.oo ':.'"! 70 ' 13 4.8H '' BO 0 13 0. Q() 3:' 90 0 13 o.oo 30 100 IS 4.BH -'7 110 ' 16 ::'.44 3' _120 3 \9 7.3:> 46 ::l; 130 5 ,. 1='.::0 59 ~HO 25 :::? • 44 /,\ r 150 ,, :!.44 6l 1- OR 4.9B 60 160 ' z 170 • OB 0.00 68 ~180 0 2B o.oo 68 _,,llO 0 08 0.00 68 ~200 0 29 0.00 68 2 210 • 08 0.00 68 220 3 3\ 7.32 76 230 3 34 7.32 83 2-40 35 2.44 85 250 0 35 0.00 85 260 36 2. 44 88 270 2 38 4.88 93 280 39 2.44 95 290 40 ?.44 98 300 " 2.44 100 310 0 41 0.00 100 0 2 3 + 5 6 7 8 9 10 11 FREQUENCY Figure 9. Expanded length frequency distribution for southern kingfish (~1enticirrhus american us). m'o Hiitr•r • • o.eo • ' 3.4'5, 3 • 0.60 3 25 ~ 3 0.90 •• • 3 ... 5 •• • • 0.90 .. • • 0.90 .. 5 J.•s 11 3' B 10.34 08 5 17.24 6 "19 20.69 "66 1 20 3.45 69 20 0.00 69 •0 20 o.eo 69 0 20 e.eo 69 • 20 o.eo 69 20 o.ee 69 • 21 3.45 72 22 3.~5 76 23 3.<45 79 2 25 6.90 86 • 25 0.00 86 2 27 6.90 93 • 27 0.00 93 • 27 o.oe 93 • 27 0.00 93 • 27 0.00 93 27 (LOO 93 •1 28 3. 45 97 0 28 0.00 97 29 3.45 100 0 29 0.00 10& 0 2 3 + 5 6 FREQUENCY Figure 10. Expanded 1ength frequency distribution for Spanish mackerel (Scomberomorus macu 1atus) . FREQ PERCENT ~~~" ~~~CENT 0 0 0 0 10 10 0 0 '0 210 2 3 20 30 no 4 10 40 'i' 230 2 6 20 60 :::; 1 7 '0 70 ~250 0 7 0 70 ~2&1 0 7 0 70 (.') 270 0 7 0 70 as !lao 0 7 0 70 -lzoo 0 7 0 70 ;;;!300 B 10 eo 0 310 0 8 0 80 >-320 0 8 0 80 0 8 0 80 0 8 0 80 1 9 10 90 0 9 0 90 10 10 100 0 10 0 100 0 2 FREQUENCY Figure 11. Expanded length frequency distribution for b1 uefi sh (Pomatomus sa1tatrix). FREQ r~~~ PERCENT ~~~tENT 26 0.00 • • 0.'55 • 2 0.55 ~ • 2 G.GO :::!! 5 7 '::.73 :::!! • ~ 19 11 5.-46 9 ,_:I: 33 50 18.03 27 <:>, 56 106 30.60 58 31 52 158 29.42 86 --'1 IS 176 9.84 96 ;o!i 3 179 1.04 98 • 179 o.oo 98 1-1o' 2 181 t.99 99 1 \82 9.55 99 1 • 182 0.90 99 1 ' 183 0.55 100 • 183 0.00 1&0 0 10 20 30 60 FREQUENCY Figure 12. Expanded length frequency distribution for pink shrimp (Penaeus duorarum). FREQ r~Q PERCENT mtEHT ~ :::!! 90 • • O.GG • ...... :::!!100 I 1.08 :I: , 10 5 6 5.38 6 0 120 25 31 26.89 33 z130 3\ 62 33.33 67 ~ 140 \8 •• 19.35 •• _,,50 ,. 90 10.75 97 ~1 9\ 1.&8 98 0 170 2 93 2.15 1- ••• 180 • 93 0.00 100 0 10 20 40 FREQUENCY Figure 13. Expanded length frequency distribution for brown shrimp (Penaeus aztecus). FREQ PERCENT CUH. ~~2Q PERCENT • o.oo • •1 I 4.55 5 O.G& 5 •I 2' -4.55 9 5 7 22.73 32 • 13 27.27 59 5 18 22.73 82 3 21 13.64 95 I 22 4.55 1SG • 22 0.00 100 0 1 2 3 5 6 FREQUENCY Figure 14. Expanded length frequency distribution for white shrimp (Penaeus setiferus).