Wandering in male fiddler crabs (Uca tangeri): alternative reproductive tactic or a functional constraint?
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Wandering in male fiddler crabs (Uca tangeri): alternative reproductive tactic or a functional constraint?
The ‘aggressive wandering’ behaviour of male fiddler crabs is well documented in several species and is usually described as an apparently random movement through a population, punctuated by threats and combat directed at displaying males, and superficial burrow explorations. It has been suggested that wandering males are mainly low condition individuals with a regenerating major claw, unsucces...
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Fiddler crabs have compound eyes that are structurally fairly well understood. However, there has been much debate regarding their spectral sensitivity and capacity to enable colour discrimination. We examined the visual pigments of two North-American species (Uca pugnax and U. pugilator), one species from the Indo-West Pacific (U. vomeris) and the only Eastern-Atlantic species (U. tangeri) of ...
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Adult females of Panopeus africanlis A. Milne Edwards, 1867 and Uca tangel-i (Eydoux, 1835) were sampled fortnightly from Apnl 1989 to November 1991 in the Rio San Pedro lnlet (SW Spaln) to estimate the seasonal timing of their reproductlve periods. Planktonic larvae were collected monthly from July 1991 to June 1992 by pumping during nocturnal flood and e b b spring tides to establish seasonal...
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The nontarget effects of temephos (as Abate 4E, 44.6% active ingredient) on fiddler crabs were examined on the salt marsh at Bombay Hook National Wildlife Refuge, near Dover, DE. Six 170 x 170-m plots were established; 3 were sprayed on 4 occasions at a rate of 1.5 fl oz/acre (0.054 kg active ingredient/ha) and 3 were controls. On each plot, marsh fiddler crab (Uca pugnax) populations were moni...
متن کاملFiddler crabs
What are fiddler crabs? Fiddler crabs belong to the genus Uca. They are members of the ocypodid family of brachyuran crabs, the most recent marine animals to have invaded land. They spend the first part of their life as aquatic plankton and only settle in the intertidal zone after their last larval moult. Adults live in burrows on intertidal mudand sand-flats within dense, mixedage, mixed-sex a...
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ژورنال
عنوان ژورنال: Behaviour
سال: 2005
ISSN: 0005-7959,1568-539X
DOI: 10.1163/1568539055010101