Scottish Marine and Freshwater Science Volume 3 Number 5: SOTEAG Rocky Shore Monitoring Programme. TBT Contamination in Sullom Voe, Shetland. 2011 Dogwhelk Survey

Figures

Figure 1: Dogwhelk sampling sites in Sullom Voe and Yell Sound. ( J Indicates sites where untoothed adults, sub-adults and juvenile size classes were sampled).

Figure 2: RPSI in toothed adult dogwhelks ( Nucella lapillus) from populations in Sullom Voe and Yell Sound sampled during the 2011 survey.

Figure 3: VDSI in toothed adult dogwhelks ( Nucella lapillus) from populations in Sullom Voe and Yell Sound sampled during the 2011 survey.

Figure 4: Relative penis size ( RPSI) values for all the size/age classes of dogwhelks in the juvenile, sub-adult and untoothed adult survey 2011.

Figure 5: Vas Deferens Sequence Index ( VDSI) values for all the size/age classes of dogwhelks in the juvenile, sub-adult and untoothed adult survey 2011.

Figure 6: Relative penis Size Index ( RPSI %) values of adult dogwhelk ( Nucella lapillus) populations sampled at Sullom Voe (sites 7-12) and Yell Sound between 1987 and 2011.

Figure 7: Vas Deferens Sequence Index ( VDSI) values of adult dogwhelk ( Nucella lapillus) populations sampled at Sullom Voe (sites 7-12) and Yell Sound between 1987 and 2011.

Figure 8: Relative penis Size Index ( RPSI) values for adult populations in the surveys from 1987-2011 shown by geographical grouping.

Figure 9: Vas Deferens Sequence Index ( VDSI) values for adult populations in the surveys from 1987-2011 shown by geographical grouping.

Figure 10: The percentage of the adult female populations sampled which were sterile in the surveys from 1987-2011, shown by geographical grouping.

Figure 11: Assessment of VDSI data from adult dogwhelks ( Nucella lapillus) sampled from sites around Sullom Voe and Yell Sound in 2011. Data are presented in accordance with OSPAR assessment classes (See Table 5).