Evolutionary variation in the mechanics of fiddler crab claws
نویسندگان
چکیده
منابع مشابه
Dishonest signalling in a fiddler crab.
Animal communication theory predicts that low-frequency cheating should be common in generally honest signalling systems. However, perhaps because cheats are designed to go undetected, there are few examples of dishonest signals in natural populations. Here we present what we believe is the first example of a dishonest signal which is used commonly by males to attract mates and fight sexual riv...
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The visual acuity of the fiddler-crab can be measured at various illuminations by means of its response to a moving visual pattern. The method, although similar to that used by Hecht and Wolf for the bee and Hecht and Wald for Drosophila, must be modified to give consistent results. An explanation of the response to a visual pattern is given in terms of the structure of the eye. Visual acuity o...
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The fiddler crab, Uca pugilator, used sideways octapedal locomotion during 15 min of treadmill exercise. At each velocity tested (0-06, 0-11 and O'^kmh") , oxygen consumption (V02) showed only a modest, sluggish elevation; a 'steady-state' was never attained. The highest V02 recorded, O-ZZmlOzg"^", was 4-4 times the resting rate. Net whole body lactate (WBL) was found to increase at a constant ...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2013
ISSN: 1471-2148
DOI: 10.1186/1471-2148-13-137