ML20138Q721

Study of Woodborer Populations in Relation to Oyster Creek Nuclear Generating Station, Aug-Oct 1985

ML20138Q721
Person / Time
Site:	Oyster Creek
Issue date:	10/31/1985
From:	Belmore C, Hillman R BATTELLE NEW ENGLAND MARINE RESEARCH LABORATORY
To:
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ML20138Q717	List: ML20138Q715 ML20138Q721
References
15315, NUDOCS 8512270424
Download: ML20138Q721 (21)

Text

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PROGRESS REPORT FOR THE FORTY-SECOND QUARTER on 1

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l STUDY OF WOODBORER POPULATIONS IN RELATION TO THE OYSTER CREEK

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NUCLEAR GENERATING STATION to GPU NUCLEAR CORPORATION November 30,1985 j

by i

R.E. Hillman and C.I. Belmore i

REPORT NO.15315 For the Period August 1,1985 to October 31,1985 l

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BATTELLE New England Marine Research Laboratory 397 Washington Street Duxbury, Massachusetts 02332

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Battelle is not engaged in research for advertising, sales promotion, or publicity purposes, and this report may not be reproduced in full or in part for such purposes.

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1 TABLE OF CONTENTS Page E X E C UTIV E S U M M A R Y.....................................................................................

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INTRODUCTION...............................................................................................

I P ROCE D URES A N D INTERIM D ATA.................................................................

2 E x po s ure Pan e is........................................................................................

2 WaterQuality...........................................................................................

2 Teredinid Gonadal Deyelopment S tudles.....................................................

2 LIST OF TABLES Table 1.

Geographic Locations of Exposure Panel Arrays in Barnegat Ba y, N e w J e rs e y.............................................................................

4 Table 2.

Incidence of Teredinidae in Panels Removed August 12-13, 1985..............................................................................................

8 Table 3.

Incidence of Teredinidae in Panels Removed September 9-10, 1985..............................................................................................

9 Table 4.

Incidence of Teredinidae in Panels Removed October 14-15, 1985..............................................................................................

10 Table 5.

Incidence of Limnoria in Panels Removed August, September and Oc to be r, 19 8 5................................................................................

I1 Table 6.

Water Quality at Exposure Panel Stations, August 12-13, 1985..............................................................................................

12 Table 7.

Water Quality at Exposure Panel Stations, September 9-10, 198 5........

13 Table 8.

Water Quality at Exposure Panel Stations, October 14-15, 19 8 5..........

14 Table 9.

Condition of Gonads of Teredinid Borers Removed from Exposure Panels in Barnegat Bay from July through September,1985................

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L5T OF FIGURES Figure 1.

Outline of Barnegat Bay Showing Geographic Locations of E x po s u r e Pa n e i s..............................................................................

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I EXECUTIVE

SUMMARY

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This progress report presents data from field and laboratory work during the period August I to October 31, 1985. Also included are the results of observations on gonad development in samples collected in July, August, and September,1935.

All field work during this quarter was carried out by GPU Nuclear personnel.

Water temperature, salinity, dissolved oxygen and pH were measured and recorded at each of the 20 stations during the three periods of exposure panel exchange.

At the time of the August panel exchange, the racks at Stations 13 and 14 had been found removed from the piers and were lying on the bottom. In September, the rack at Station 3 was found to have been vandalized with the rack positioned so that seven panels were exposed to the air. The panels were not completely dry, so they may not have been in an exposed position for very long.

Due to dock repair at Station 16B, the exposure panel rack at Station 16B was I

relocated 20 feet closer to shore at the time of the October panel exchange.

The regular panels removed in September from Stations 1, 4A, 5, 6, 9 and 12, as well as the 12-month panels from Stations 2, 7,11,12 and 17 were in the refrigerator awaltu.g processing when power was lost for 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> due to a hurricane. Eight percent of the shipworms removed from the September panels were alive at the time of examination.

In October, when refrigeration was not interrupted, only two percent of the shipworms were alive at the time of examination, so it is not possible to determine whether the loss of refrigeration in September had anything to do with the number of surviving shipworms in the panels.

I Only four specimens of Bankia gouldi were identified in the 1-and 6-month panels examined during the quarterly report period.

Gonadal conditions in shipworms from July through September collections were typical of those usually found in September. Most of the shipworms in July and August were in the ripe through spent condition, with a few newly settled specimens showing early active stages. By September, most of the few shipworms collected were either spent or had no evident gonad tissue. Two of the September specimens were in the early active stage.

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1

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PROGRESS REPORT FOR THE FORTY '.>ECOND QUARTER on STUDY OF WOODBORER POPULATIONS IN RELATION TO THE OYSTER CREEK NUCLEAR GENERATING STATION to GPU NUCLEAR CORPORATION November 30, 1985 by Robert E. Hillman and C.I. Belmore REPORT NO.15315 For the Period August 1,1985 to October 31,1985 from BATTELLE New England Marine Research Laboratory 397 Washington Street Duxbury, Massachusetts 02332 INTRODUCTION Battelle's New England Marine Research Laboratory is conducting an investigation to determine whether the Oyster Creek Nuclear Generating Station is affecting the resident marine borer population in Oyster Creek to the extent that the population is cc.ntributing significantly to marine borer-caused damage in Barnegat Bay.

A description of the program and procedures used may be found in the ninth anntul report titled, " Study of Woodborer Populations in Relation to the Oyster Creek Generating Station," dated May 15,1985.

This report presents data for the forty-second quarterly period from August I to October 31,1985.

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2 PROCEDURES AND INTERIM DATA I

Exposure Panels I

Personnel from GPU's Oyster Creek Nuclear Generating Station retrieved and replaced the long-term and short-term exposure panels with new untreated pre-soaked (for two weeks) panels at the 20 exposure sites in Barnegat Bay and adjacent waters (Figure 1) during the periods of August 12-13, September 9-10, and October 14-15,1985.

At the time of the August panel exchange, the racks at Stations 13 and 14 had been found removed from the piers and were lying on the bottom. In September, the rack at Station 3 was found to have been vandalized with the rack positioned so that seven panels were exposed to the air. The panels were not completely dry, so they may not have been in an exposed position for very long.

Due to dock repair at Station 163, the exposure panel rack at Station 163 was relocated 20 feet closer to shore at the time of the October panel exchange.

The regular panels removed in September from Stations 1, 4A, 5, 6,9 and 12, as well as the 12-month panels from Stations 2,7,11,12 and 17 were in the refrigerator awaiting processing when power was lost for 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br /> due to a hurricane. Eight percent of the shipworms removed from the September panels were alive at the time of examination.

In October, when refrigeration was not interrupted, only two percent of the shipworms were alive at the time of examination, so it is not possible to determine whether the loss of refrigeration in September had anything to do with the number of surviving shipworms in the panels.

Table I describes the geographical locations of the exposure sites. Data from the laboratory examination of the panels are presented in Tables 2 through 5.

I Water Quality I

Salinity, water temperature, dissolved oxygen and pH were taken at each exposure panel site by the GPU Nuclear field team. Results for August, September and I

October,1985 are presented in Tables 6 through 3.

Teredinid Gonadal Development Studies Table 9 shows the gonad condition of teredinid borers collected in July, August, and September,1985.

Included are results from panels exposed for periods ranging from I to 12 months.

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3 7

MANASQUAN A

INLET BI1ELLE O

POINT

1. NAS PLEASANT INTRACOASTAL - -----

WATERWAY CANAL I

MANTOLOKING 15 I

METTLE CREEK I

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, psd 16 I

s' f SLOOP ATLANTIC OCEAN HOLLY PARK e*'

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STOUTS CREEK #

10B SEDGE 10 ISLAND e 10A o

I 5 $l OYSTER g

REEK OYSTER CREEK 7

6 BARNEGAT INLET g

NUCLEAR GENERATING 1 BARNEGAT STATION CTY l

WARETOWN 4

I BARNEGAT BEACH CON KLtN

$ PANEL ARRAY ISLAND I

t 0

1 2

3

[

- J MILES f

BARNEGAT INLET. NEW JERSEY Y

Latitude 39 45 6 N Longitude 74 06.0 W

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FIGURE 1. OUTLINE OF BARNEGAT BAY SHOWING GEOGRAPHIC LOCATIONS OF EXPOSURE PANELS

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M M

M TABLE 1.

GEOGRAPHICAL LOCATIONS OF BATTELLE NEW ENGLAND MARINE RESEARCH LABORATORY'S EXPOSURE PANEL ARRAYS IN BARNEGAT BAY, NEW JERSEY Structure to be used for Nearest Previous Approximate Latitude Site No.

Site Suspension of Rack Data Stations and Longitude 1.

Barnegat Coast Guard Finger Pier WC1 Lat. 390 45.8'N Station, Barnegat Inlet Bulkhead WFCL 1948-1967 Long. 740 06.5'W 2.

Ashton Marina Bulkhead WC 13,14 Lat. 390 40'N 1450 Bay Ave.

Long.740 13'W Manahawkin 3.

Iggie's Marina Bulkhead WC 16,17, IS,19 Lat. 390 45'N East Bay Ave.

Long. 740 12.5'W Barnegat (Conklin Island) 4.

Liberty Harbor Marina Bulkhead WC 21 Lat. 390 47'N Washington Ave.

R. Turner Long.740 11'W Waretown Rutgers U.

4-A *.

Holiday Harbor Marina Bulkhead WC 21 Lat. 390 43'N Lighthouse Drive R. Turner Long.740 ll'W Waretown Rutgers U.

5.

Mouth of Oyster Creek Dock WC 29, 30 Lat.39 48.5'N Lot 4, Compass Road Rutgers U.

Long. 740 10.3'W Offshore End 6.

Oyster Creek 1 Dock Lat. 390 48.5'N Lagoon, Inshore End Long. 740 10.35'W 37 Capstan Drive

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TABLE 1. (Continued)

Structure to be used for Nearest Previous Approximate Latitude Site No.

Site Suspension of Rack Data Stations and Longitude 7.

Private Dock End of dock WC 27,28 Lat. 390 48.5'N Dock Ave.

R. Turner Long. 740 ll.I'W Oyster Creek Rutgers U.

Sands Pt. Harbor Waretown 3.*

Oyster Creek Bulkhead 1500 f t.

WC 26 Lat.39 43.7'N Discharge Canal east of the R.R.

Long.740 12'W bridge 9.*

Forked River Metal pier WC 31 Lat. 390 49.2'N ui South Branch Long. 740 12.2'W Intake Canal 10.

Teds Marina Pier WC 33,34 Lat. 390 50.I'N Bay Ave.

Long. 740 ll.6'W Forked River 10 A *.

Private Dock Under dock Lat. 390 49'N 1217 Aquarius Ct.

Long.740 10'W Forked River 10B*.

Private Dock Under dock Lat. 390 49.4'N 1307 Beach Blvd.

Long.740 10. I'W Forked River 11.

Forked River Bulkhead WC 35 Lat.39 49.7'N (near mouth)

Rutgers U.

Long.740 10'W 1413 River View Drive

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M TABLE 1. (Continued)

Structure to be used for Nearest Previous Approximate Latitude Site No.

Site Suspension of Rack Data Stations and Longitude 12.

Stouts Creek Bulkhead WC 38, 40, 41 Lat. 390 50.5'N 1273 Capstan Drive R. Turner Long. 740 08.8'W Wurtz Rutgers U.

13.

Rocknak's Yacht Basin End of pier WC 46 Lat. 390 52'N Seaview Ave.

Long. 740 09'W Lanoka Harbor Cedar Creek 14.

Dicks Landing Pier WC 49 Lat.39 54'W m

Island Drive R. Turner Long. 740 OS.I'W Bayville (flolly Park)

Nelson 15.

Winter Yacht Basin Inc.

Pier WC57 Lat. 400 02.5'N Rt.328 Long. 740 04.9'W Mantoloking Bridge 16.

Berkely Yacht Basin Pier WC 60,61 Lat. 390 55.9'N

3. Street Long. 740 04.9'W Seaside 16A *.

Municipal Dock Pier WC 60,61 Lat. 390 56.6'N Seaside lieights Long.740 04.9'W 16B*.

Bayside Boats Pier WC 60,61 Lat. 390 56.6'N State Highway 35 and Long.740 04.9'W Bay Boulevard Seaside lieights, N3

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TABLE 1. (Continued)

Structure to be used for Nearest Previous Approximate Latitude Site No.

Site Suspension of Rack Data Stations and Longitude 17.

Island Beach Pier WC68 Lat. 390 47.I'N State Park Long.740 05.9'W

' edge Island)

All exposure panel racks suspended in a minimum water depth at mean low water of at least three feet. Racks hung with nylon line from existing structures so the bottom panels are close to, but not touching the bottom.

WC = Woodward-Clyde WFCL = William F. Clapp Laboratories Site 4-A installed April,1977.

Sites 10A,10B installed April,1978.

Site 16 discontinued November,1981.

Site 16A installed December,1981 - discontinued June,1932.

Site 16B installed June,1982.

Sites 8 and 9 moved from original locations November,1983.

8 TABLE 2. INCIDENCE OF TEREDINIDAE IN PANELS REMOVED AUGUST 12-13, 1985 No.of Percent Size Range Species Station Panel Specimens Filled in mm.

Identification Remarks I

1 P

1000 10

<!-70 400 T.navalis, Ripening gonads 600 Teredinidae*

C 1100 2

<!-12 50 T.navalis, 1050 Teredinidae*

4A P

1

<1 6

1 Teredo spp.*

C 0

8 P

2 2

60-115 2 T. navalis C

0 10A P

1 2

155 i B. gouldi C

0 11 P

34 5

<l-95 i B. gouldi, Many dead 17 T. navalis, 16 Teredinidac*

C 40

<1

<!-7 40 Teredinidae*

Many dead Stations 2-4, 5-7, 9, 10, 108, 12-17, no Teredinidae present.

P = Long-term panel submerged February 11-12, 1985.

I C = Short-term panel submerged July 8-9,1985.

• = Not speciated due to size or condition.

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9 TABLE 3. INCIDENCE OF TEREDINIDAE IN PANELS REMOVED SEPTEMBER 9-10,1985*

No.of Percent Size Range Species Station Panet Specimens Filled in mm.

Identification Remarks

~

m 1

P 600 95 1-65 100 T. navalis, None alive 500 Teredinidae*

• C 46

<1

<l-3 46 Teredinidae*

• 4A P

5

<1

<l-36 3 T. navalis, 2 Teredinidae*

• C 0

8***

P 3

1 1-97 2 T. navalis, None alive 1 Teredinidae C

0 10A P

1

<1 65 1 T. navalis C

0 11 P

43 4

1-55 26 T. navalis, Two alive,41 dead 17 Teredinidae*

• C 0

Stations 2-4, 5-7, 9, 10, 103, 12-17, no Teredinidae present.

P

= Long-term panel submerged March 11-12, 1985.

C Short-term panel submerged August 12-13, 1985.

o

- Panels from stations 4A, 5, 6, 8, 9, and 12 in refrigerator without power for 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> due to hurricane Glorir..

= Not speciated due to size or condition.

• • • = Rack found out of the water.

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10 TABLE 4. INCIDENCE OF TEREDINIDAE IN PANELS REMOVED OCTOBER 14-15, 1985 No.of Percent Size Range Species Station Panel Specimens Filled in mm.

Identification Remarks 1

P 650 99 l-65 100 T. navalis, None alive 550 Teredinidae*

C 0

2 P

1

<1 60

1. T. navalis C

0 4A P

2

<1 40-57 2 T. navalis C

0 7

P 1

<1 45 1 T. navalis Dead. Tube empty I

except for shells &

pallets C

0 8

P 1

1 95 1 T. navalis Dead. Tube empty except for shells &

pallets C

0 10A P

3 2

60-85 3 T. navalis I dead, 2 alive C

0 11 P

47 25 8-200 1 B. gouldi, Only 5 alive, 31 T. navalis, rest dead 15 Teredinidae*

C 0

3 12 P

1 4

255 i B. nouldi l

C 0

15 P

3 2

42-90 3 T. navalis C

0 Stations 1, 4, 5, 6,9,10,10B,13,14,16B and 17, no Teredinidae present.

P = Long-term panel submerged April 3-9, 1985.

g C = Short-term panel submerged September 9-10, 1985.

l3

• = Not speciated due to size or condition.

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J 11 TABLE 5. INCIDENCE OF LIMNORIA IN PANELS REMOVED AUGUST, SEPTEMBER AND OCTOBER,1985.

i August

• September October No.of No. of No.of No.of No.of No.of Station Panel Tunnels Specimens Tunnels Specimens Tunnels Specimens 1

P 14 11 10 * *

• 0 39 * *

• 9 C

2 2

0 7

7 2

P 1000 1500 950*

1200 2100*

2300 C

1 1

3 3

0 3

P 32 38 46**

60 370*

470 C

1 1

0 0

I 4

P 23 16 30 *

• 25 54***

53 C

3 2

0 0

I 4A P

63 0

46***

10 28***

19 C

1 2

4 1

0 11 P

0 0

0 C

0 0

1 1

Stations 5-108,12-17, no Limnoria present.

P

= Long-term panel, submerged 6 months.

C

= Short-term panel, submerged 1 month.

= Gravid females and juveniles present.

= Gravid females present.

• • * = Juveniles present.

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12 TABLE 6. WATER QUALITY AT EXPOSURE PANEL STATIONS AUGUST,1985 1

Depth in Salinity Temperature Og Station Date Time Feet o/oo (OC)

(mg/1) pH 1

3/12/35 0856 4.5 23.3 24.9 5.2 7.7 2

8/12/35 0940 4.0 27.2 26.7 3.5 7.6 3

3/12/35 1015 2.5 25.3 27.3 3.7 7.7 4

8/12/35 1040 4.0 26.0 27.5 1.8 7.5 l

4A 8/12/35 1105 2.5 26.2 28.1 5.8 7.3 5

8/12/35 1130 2.0 24.4 30.3 5.5 7.3 l

6 8/12/35 1200 3.0 24.2 30.7 6.5 7.3 7

3/12/35 1220 4.5 24.0 31.6 6.4 7.3 3

3/12/35 1245 3.0 24.3 31.8 6.1 7.8 9

3/12/35 1300 5.5 24.3 27.6 6.2 7.9 10 8/12/35 1513 5.0 23.0 28.0 4.0 7.6 10A 8/12/35 1405 2.5 25.2 23.9 6.7 7.8 10B 3/12/35 1430 4.0 25.2 29.1 7.3 7.9

.l 11 3/12/35 1450 2.5 25.6 23.3 6.9 7.9 12 S/12/35 1535 4.0 23.7 28.3 7.7 8.0 13 8/12/35 1600 3.5 20.3 29.4 7.4 7.9 14 8/12/35 1700 4.0 22.9 23.5 7.6 8.0 15 8/13/35 0850 4.0 20.3 25.7 6.4 7.1 16B 8/13/35 0915 5.0 20.3 25.9 4.2 7.2 17 8/13/35 0945 2.0 23.2 25.9 2.6 7.3 1

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13 TABLE 7. WATER QUALITY AT EXPOSURE PANEL STATIONS SEPTEMBER,1985 Depth in Salinity Temperature O2 Station Cate Time Feet o/oo (OC)

(mg/1) pH 1

9/9/85 0845 6.0 31.1 25.0 4.6 7.7 2

9/9/85 0915 4.0 29.4 26.0 3.3 7.6 3

9/9/85 0935 2.5 23.7 26.0 4.1 7.6 4

9/9/85 0955 4.0 29.4 26.1 2.1 7.4 4A 9/9/85 1015 2.5 29.6 26.7 4.5 7.5 5

9/9/35 1030 2.0 28.1 30.0 4.4 7.6 6

9/9/85 1040 3.0 28.0 30.0 4.7 7.7 7

9/9/35 1100 5.0 28.1 30.6 5.2 7.7 8

9/9/85 1110 3.0 28.1 30.9 5.4 7.7 9

9/9/35 1115 6.0 28.3 26.6 5.4 7.6 10 9/9/35 1325 6.0 26.4 26.8 3.6 7.5 10A 9/9/35 1235 2.0 28.5 29.3 6.3 7.3 10B 9/9/85 1240 4.0 23.3 28.2 6.3 7.8 11 9/9/85 1300 2.5 28.8 27.5 6.1 7.8 12 9/9/85 1400 4.5 27.3 26.9 7.3 7.3 13 9/9/35 1420 4.0 26.2 27.3 5.7 7.7 14 9/9/85 1440 4.5 24.7 27.3 6.9 7.3 15 9/10/85 0840 5.0 23.9 25.3 3.4 7.1 16B 9/10/85 0910 5.5 21.9 26.0 2.7 7.2 17 9/10/85 0930 2.5 30.2 25.2 2.2 7.3 I

m

14 TABLE 3. WATER QUALITY AT EXPOSURE PANEL STATIONS I

OCTOBER,1985 Depth in Salinity Temperature O2 Station Date Time Feet o/co (OC)

(mg/1) pH l

1 10/14/35 0845 9.0 31.7 17.9 6.1 7.6 2

10/14/35 0923 5.5 28.0 17.0 6.5 7.6 3

10/14/35 1000 3.5 27.3 17.1 6.0 7.6 4

10/14/85 1027 5.0 23.9 17.7 4.4 7.5 4A 10/14/85 1045 3.5 23.3 13.4 4.4 7.4 5

10/14/85 1100 3.5 25.9 24.0 6.0 7.6 6

10/14/85 1115 4.0 25.8 23.7 6.2 7.6 7

10/14/85 1140 6.0 26.6 24.4 6.3 7.6 8

10/14/85 1158 4.5 26.5 24.5 6.3 7.6 9

10/14/85 1210 8.0 26.6 13.1 7.0 7.7 10 10/14/85 1430 6.5 26.5 19.0 5.9 7.6 10A 10/14/85 1330 3.5 26.7 20.0 7.6 7.7 10B 10/14/85 1345 5.0 26.3 20.1 7.3 7.7 11 10/14/85 1400 3.5 27 5 19.0 6.7 7.7 12 10/14/35 1450 5.0 25.3 13.7 7.9 7.7 13 10/14/85 1530 4.5 25.3 18.0 7.6 7.3 14 10/14/35 1600 5.0 24.7 17.2 6.5 7.7 15 10/15/35 0330 5.5 23.4 13.1 7.5 7.5 163 10/15/35 0915 7.0 19.7 18.1 5.0 7.3 17 10/15/35 1015 2.0 29.7 19.3 5.0 7.3 11

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M TABLE 9. CONDITION OF GONADS OF TEREDINID BORERS REMOVED FROM EXPOSURE PANELS IN BARNEGAT BAY FROM JULY THROUGli SEPTEMBER,1985 EA=Early active; LA= Late active; R= Ripe; PS= Partially spawned; NDG=No discernable gonad; S= Spent; M= Male; F= Female; H= Hermaphrodite Month No. Months Gonad Specimen No.

Station Removed Exposed Species Sex Condition Comments 1544 7

Jul '35 12 Bankia gouldi F

S special panel; necrotic 1545 17 Jul '35 12 Teredo navalis H

S special panel 1546 a 7

Jul '35 12 Teredo navalis F

R special panel; necrotic b

Teredo navalis H

PS necrotic c

Teredo navalis F

S necrotic d

Teredo navalis F

R H

1547 a 11 Jul '35 12 Bankia gouldi M

R special panel vi b

Bankia gouldi F

S c

Bankia gouldi M

PS d

Bankia gouldi NDG e

Bankia gouldi F

S f

Bankia gouldi M

R 1543 11 Jul '85 6

Teredinidae NDG 1549 a 3

Aug '35 6

Teredo navalis H

PS b

Teredo navalis F

S 1550 a 11 Aug '35 6

Teredo navalis M

EA b

Teredo navalis H

S c

Teredo navalis M

S d

Teredo navalis F

R e

Teredo navalis H

PS f

Teredo navalis M

S 1551 11 Aug '35 6

Bankia gouldi NDG 1552 10A Aug '35 6

Bankia gouldi M

R n

M M

M TABLE 9.

(Continued)

Month No. Months Gonad Specimen No.

Station Removed Exposed Species Se>

Condition Comments 1553 a 1

Aug'35 1

Teredo navalis at LA b

Teredo navalis M

LA c

Teredo navalis M

LA d

Teredo navalis NDG (very young) e Teredo navalid M

EA f

Teredo navalis H

LA necrotic g

Teredo navalis M

LA necrotic 1554 a 1

Aug '85 6

Teredo navalis NDG; necrotic b

Teredo navalis NDG c

Teredo navalis NDG; necrotic d

Teredo navalis F

R necrotic e

Teredo navalis F

R necrotic

[

f Teredo navalis H

PS necro tic g

Teredo navalis F

S necrotic h

Teredo navalis M

LA necrotic i

Teredo navalis M

R necrotic j

Teredo navalis M

R necrotic k

Teredo navalis F

R necro tic I

Teredo navalis H

R necrotic m

Teredo navalis F

PS necrotic n

Teredo navalis F

PS o

Teredo navalis H

LA necrotic p

Teredo navalis H

PS necrotic q

Teredo navalis M

EA 1555 4A Aug '35 6

Teredo spp.

NDG 1556 11 Aug '35 12 Bankia gouldi M

R special panel; necrotic 1557 17 Aug '35 12 Teredo navalis H

S special panel; necrotic 1553 17 Aug '35 12 Teredo navalis special panel; NDG; necrotic

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Marine Research Lalmratory 3

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