Willcox Maia K, Woodward Lee Ann, Ylitalo Gina M, Buzitis Jon, Atkinson Shannon, Li Qing X
Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, HI 96822, USA.
Sci Total Environ. 2004 Apr 25;322(1-3):81-93. doi: 10.1016/j.scitotenv.2003.09.014.
The Hawaiian monk seal (Monachus schauinslandi) is an endangered species found only in the Hawaiian Island chain. The largest subpopulation, at French Frigate Shoals, has been in decline since 1989. In order to assess organochlorine (OC) levels in the Hawaiian monk seals, whole blood and blubber samples were collected in 1999 from 46 free-ranging Hawaiian monk seals at French Frigate Shoals, and were analyzed for eight dioxin-like polychlorinated biphenyls (PCBs) as well as six other PCB congeners, DDT and DDT metabolites. Average levels of the total PCBs in blood samples from adult male, juvenile and reproductive female groups were 4800, 4000 and 3000 ng/g lipid wt., respectively, whereas 3200, 1300 and 1200 ng/g, respectively, in blubber from the three corresponding groups. p,p'-DDE was the only DDT detected in blubber samples, and no DDTs were detected in blood samples. Concentrations of the total PCBs in adult males were significantly higher than the levels measured in either reproductive females or juveniles. There were significant correlations between age and blubber p,p'-DDE, estimated mass and total blood PCBs or blubber p,p'-DDE, and body condition and total blood PCBs. Although it is clear that the Hawaiian monk seal has been exposed to OCs, it is unclear what biological effects, if any, these xenobiotics may have on the animals.
夏威夷僧海豹（Monachus schauinslandi）是一种仅在夏威夷群岛链中发现的濒危物种。其最大的亚种群位于法属护卫舰浅滩，自1989年以来数量一直在下降。为了评估夏威夷僧海豹体内的有机氯（OC）水平，1999年从法属护卫舰浅滩的46只自由放养的夏威夷僧海豹身上采集了全血和鲸脂样本，并对其中8种二恶英类多氯联苯（PCB）以及其他6种PCB同系物、滴滴涕（DDT）及其代谢产物进行了分析。成年雄性、幼年和繁殖雌性组血样中多氯联苯总量的平均水平分别为4800、4000和3000纳克/克脂重，而在相应三组的鲸脂中分别为3200、1300和1200纳克/克。p,p'-滴滴伊是在鲸脂样本中检测到的唯一一种滴滴涕，在血样中未检测到任何滴滴涕。成年雄性体内多氯联苯的浓度显著高于繁殖雌性或幼年海豹体内的测量水平。年龄与鲸脂中的p,p'-滴滴伊、估计体重与全血多氯联苯总量或鲸脂中的p,p'-滴滴伊、身体状况与全血多氯联苯总量之间存在显著相关性。虽然很明显夏威夷僧海豹已经接触到有机氯，但尚不清楚这些外源性物质对这些动物可能产生何种生物学影响（如果有影响的话）。
