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2001
Although fiddler crabs (genus Uca) have been among the most widely studied organisms with respect to sexual selection, agonistic behavior, asymmetry, and visual and acoustic signaling, the phylogenetic relationships within the genus have remained largely a mystery.
2000 •
Fiddler crabs (Ocypodidae, Uca) are a well known group of small, intertidal Brachyuran crabs, characterized by strong sexual dimorphism and male asymmetry. Male fiddler crabs exhibit one of the most extreme levels of body asymmetry of any organism, having a large major claw containing a third to half of the animal's body mass and a small minor claw. The morphology of major and minor claws varies tremendously across species.
Proceedings of The National Academy of Sciences
Molecular Phylogeny Analysis of Fiddler Crabs: Test of the Hypothesis of Increasing Behavioral Complexity in Evolution1996 •
IOP conference series
Molecular identification and phylogenetic reconstruction of two fiddler crabs (Uca forcipataandUca triangularis)2019 •
2009 •
The fiddler crabs Uca panacea Novak & Salmon, 1974 and Uca pugilator (Bosc, 1802) are closely related North American species that are sympatric along the north coast of Gulf of Mexico. Since U. panacea was described, there has been confusion in the identification these two species. Morphological differences between these two fiddlers have been pointed out in recent years, mainly regarding the presence of a pigment spot and granulations on the dorsal margin of carapace in U. pugilator. We report herein some intraspecific differences between the two species that we believe to be useful in avoiding misidentification among preserved specimens of these two fiddler crabs, such as the absence of the pigment spot in U. pugilator and the presence of the pigment spot and granulations on dorsal margin of carapace in U. panacea as well. Our results have also revealed that 65% of the U. pugilator specimens examined possess a gape pile in the major chela, which is not a reliable diagnostic character, but could be useful when present. The gonopods of both species were analyzed using SEM, confirming the previous statement that the sub-terminal thumb is shorter in U. panacea than in U. pugilator. Finally, as important morphological characters are missing in the original description of U. panacea, a redescription of this species is also provided.
Academia Letters
Commentary on: Shell use by juvenile fiddler crabs Uca pugnax and Uca pugilator by George, Carlson and Regassa2021 •
2014 •
Fiddler crabs are true crabs in the infraorder Brachyura. The Brachyura are the most advanced of the decapods. The crab body is generally short, wide, and flat, and is characterized by a reduced abdomen that lacks a tail fan and is flexed under the body. In all but a few small groups, all 5 pairs of walking legs are large and the first pair is always claws. The majority of brachyuran species pass through a number of planktonic larval stages, with the megalopal stage being the last larval stage before settlement to the crab form. The megalopa stage resembles the adult; however, the abdomen has yet to fold under the body. Fiddler crabs are in the family Ocypodidae that is characterized by eyes that are set close together at the end of long eye stalks.
Evolutionary Ecology of Social and Sexual Systems
Predation and the Reproductive Behavior of Fiddler Crabs (Genus Uca)2007 •
Revista chilena de radiología
Rol de la TC multicorte con RMP en el diagnóstico de la hernia obturatriz: Presentación de un caso2014 •
Bulgarian Journal of Science and Education Policy
Parental Socio-Economic Status, Family Structure and Living Environment as Predictors of Violence against Children in Lagos, Nigeria2014 •
… Alegre. Edição 5, vol. 3, n. …
Análises sobre a desregulamentação da Telefonia no Brasil1997 •
Journal of the American Academy of Child & Adolescent Psychiatry
The Treatment of Adolescent Suicide Attempters Study (TASA): Predictors of Suicidal Events in an Open Treatment Trial2009 •
Coronary Artery Disease
Use of drug-eluting stents for the treatment of in-stent restenosis in routine clinical practice2005 •
2019 •
arXiv: Nuclear Theory
Investigation of the thermal effects on the nuclear matter2020 •
1999 •
Australasian Journal of Environmental Management
Biosecurity hygiene in the Australian high country: footwear cleaning practices, motivations, and barriers among visitors to Kosciuszko National park2020 •
The Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics
Formation of Stress Fibers from Pre-Existing Actin Filaments driven by Mechanical Stress in Semi-Intact Cells(Micro- and Nano-biomechanics)2004 •
Current Oncology
Selected abstracts submitted to the 2nd International Cancer Fatigue Symposium: Putting the Pieces Together2010 •
Media Kesehatan Masyarakat Indonesia
Khasiat Madu Menurunkan Tekanan Darah Dan Hematologi Parameter2017 •
Journal of Cellular and Molecular Medicine
Exercise during transition from compensated left ventricular hypertrophy to heart failure in aortic stenosis rats2018 •
L’Orientation scolaire et professionnelle
Compétences non académiques et ambitions scolaires d’élèves scolarisés en éducation prioritaire2018 •