Table 1: Numbers of melanic and non-melanic Adalia bipunctata in samples collected from the indicated locality in each of five surveys covering 1980 to 2004

From: A steep cline in ladybird melanism has decayed over 25 years: a genetic response to climate change?

LocationDistance to coast (km)19801991199519982004
  # Melanic# Typica% Melanic# Melanic# Typica% Melanic# Melanic# Typica% Melanic# Melanic# Typica% Melanic# Melanic# Typica% Melanic
Ouddorp5.6198817.82511418.02510419.42213014.5186521.7
Goedereede8.0   2311217.0147116.5148214.6131398.6
Stellendam11.6258323.23311722.0197819.62611917.9178217.2
Dirksland19.05738313.02514814.52411517.33416816.8   
Middelharnis22.077074869.33119313.87622125.64315821.44416121.5
Oude Tonge28.6415811 05927.35417523.62711818.63110822.353014.3
Achthuizen32.8203040.03911026.2197021.4216823.6   
Ooltgensplaat37.2708944.04614524.1259421.0267725.2   
Willemstad42.42565314444.97512837.0549835.54213723.54912428.3
Klundert50.012924934.17512337.9367632.17814135.6287028.6
Oudenbosch50.31207113951.5      519435.2   
Zevenbergen55.42255205452.37511339.922554529.210217936.3299523.4
Etten-Leur60.42251174456.49310048.28015234.55911034.9268124.3
Prinsenbeek64.015112454.9788149.1348728.18716135.1   
Tilburg87.84546354656.28910745.410012644.3376635.9165622.2
Waalre/Eindhoven118.8836855.010613643.8   338029.2