Fróðskaparrit - 31.12.2000, Blaðsíða 163

KANNINGAR AV KYKSILVRI OG ORGANOKLORIDUM
I EINSTØKUM HAVSUGDJORUM I FØROYUM
167
pilot whales
□ males
■ females
body length, cm
Fig. 12. The concentration of p,p’-DDE, in /ug/kg lipid, in pilot whale blubber is plotted as afunction ofbody
lengthfor all the males and females ofthe two pods Tórshavn 24 September 1997 and Sandavágur 26 August
1997.
Mynd 12. Innihaldið av p,p ’-DDE, í |ag/kg av feitti, í grindahvalaspiki er víst sum funktión av longdini á hann- og
honhvølum í teimum báðum grindunum 24. september 1997 í Tórshavn og 26. august 1997 í Sandavági.
most heavily used pesticide in the period
1972 to 1984 (Saleh, 1991). Other com-
pounds have been widely used in the post-
war period until the 1970s (DDT and the
chlordanes), and some are still used in re-
stricted applications (HCB, lindane, and
DDT) (Waxman, 1998).
The analysis results for grey seal are giv-
en in Table 7. The most striking feature is
the difference in Mirex concentration in
adult males in comparison to that in groups
of juveniles and adult females. The adult
male concentration of DDT and the chlor-
danes are two to four times as high in the
adult males as in the juveniles of both sex-
es. The Mirex concentration, however, is
more than ten times higher in the adult
males than in the juveniles. A closer in-
spection of the data shows that one particu-
lar male, a 22 year old, pulled the average
upwards very markedly with a concentra-
tion of 729 pg/kg lipid (not shown in Fig.
7). The individual with the next highest
concentration was also an adult male 21
grey seals
t o
ra 1/1
100
80
60
40
20
0
10
15
20
25
30
□ males
■ females
age, yrs
Fig. 13. The sum of toxaphene
parlars no. 26 and 50 (nos. 32,
62, and 69 where not detected)
in grey seal blubber, expressed
as pg/kg lipid, is plotted vs. age.
Mynd 13. Samløgan av toksaf-
enparlarunum nr. 26 og 50 (nr.
32, 62 og 69 vórðu ikki ávíst) í
láturkópaspiki, í pg/kg av feitti,
er víst sum funktión av aldri.