Preliminary study of DDTs variability depending on the egg-laying order of Black-tailed Gull (Larus crassirostris) breeding at Baengnyeongdo, South Korea

• DOI: 10.30980/kjo.2017.12.24.2.41
• Publication Date: 2018-05-03T21:03:58Z
• Authors: Jangho Lee; Jongchun Lee; Heeyeon Jang; Jong-Hyouk Park; Kyuyoung Shim
• Keywords: Wet weight; Bird egg; Laying

DDTs of Black-tailed Gull (Larus crassirostris) eggs laid on Baengnyeongdo, West Sea Korea was analyzed to compare the concentrations depending an egg-laying order. The first-laid had higher values in biometrics (length 63.98 ± 0.61 mm, t = 7.6, p 0.01; width 44.83 0.17 3.2, 0.05; weight 67.29 1.20 g, 2.6, 0.08) than second-laid 62.33 0.41 43.52 0.20 and 62.21 0.65 g). p,p’-DDE which only determined this analysis were not significantly different between first (mean standard error, 218.4 45.3 ng/g wet wt., n 5, -2.0, 0.11) (266.7 69.1 5). However, due small sample size, it could be difficult identify distribution pattern Therefore, order improve representativeness sampling method relating for long-term monitoring pollutants accumulation, is necessary analyze enough size a comparison study consider accumulation patterns other persistent organic (except DDTs) also variability within-clutch among-clutches.