4c0c7017-86e3-47d5-bc38-d5015b66a2b1 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T11:37:02 creation ISO 19115 2016 Rapid colour changes associated with the fiddler crab, Uca capricornis 4c0c7017-86e3-47d5-bc38-d5015b66a2b1 The purpose of this experiment was to quantitatively examine the rapid colour changes associated with the fiddler crab, Uca capricornis. Experiments were conducted in the East Point Reserve, Darwin from Nov - Jan (04/05 and 05/06). 65 randomly selected crabs were caught (21 males and 44 females) and their ability to change colour over a 20 minute period was assessed using a portable spectrophotometer. The results indicate that when caught, or otherwise stressed, U. capricornis are capable of rapidly changing their colour, with short term colour changes more likely in females. In all cases the pattern remained unchanged, but did become more difficult to distinguish as the colours darkened. {"type": "Polygon", "coordinates": [[[130.5, -13.0], [131.0, -13.0], [131.0, -12.0], [130.5, -12.0], [130.5, -13.0]]]} 130.5 131.0 -13.0 -12.0 28 960036 Behavioural Ecology Biosphere | Zoology | Crustaceans Colour Pattern Fiddler Crab Ocypodidae Rapid Colour Change Spectrophotometers Uca capricornis area_colour carapace_width claw_length claw_side crab_code date sex time wavelength 2-1-05_Crabs1_3.zip documentDigital ZIP 2-1-05_Crabs4_6.zip documentDigital ZIP 2-1-05_Crabs7_9.zip documentDigital ZIP 2-1-05_Crabs10_12.zip documentDigital ZIP 2-1-05_Crabs13_15.zip documentDigital ZIP 2-1-05_Crabs16_18.zip documentDigital ZIP 2-1-05_Crabs19_20.zip documentDigital ZIP capricornis_colour_change_(2-1-05)2.xls documentDigital Spectral reflectance measurements of crabs collected on 02/01/05 XLS 3-1-05_Crabs1_3.zip documentDigital ZIP 3-1-05_Crabs4_6.zip documentDigital ZIP 3-1-05_Crabs7_9.zip documentDigital ZIP 3-1-05_Crabs10_12.zip documentDigital ZIP 3-1-05_Crabs13_15.zip documentDigital ZIP 3-1-05_Crabs16_18.zip documentDigital ZIP 3-1-05_Crabs19_21.zip documentDigital ZIP 3-1-05_Crabs22_23.zip documentDigital ZIP capricornis_colour_change_(3-1-05).xls documentDigital Spectral reflectance measurements of crabs collected on 03/01/05 XLS 13-1-05_Crabs1_3.zip documentDigital ZIP 13-1-05_Crabs4_6.zip documentDigital ZIP 13-01-05_Crabs7_9.zip documentDigital ZIP 13-1-05_Crabs10_12.zip documentDigital ZIP 13-1-05_Crabs13_15.zip documentDigital ZIP 13-1-05_Crabs16_18.zip documentDigital ZIP 13-1-05_Crabs19_20.zip documentDigital ZIP 13-1-05_Crabs21_22.zip documentDigital ZIP capricornis_colour_change_(13-1-05).xls documentDigital Spectral reflectance measurements of crabs collected on 13/01/05 XLS Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML