Commentary on: Shell use by juvenile fiddler crabs Uca pugnax and Uca pugilator by George, Carlson and Regassa

2021 ◽  
Author(s):  
Judith S. Weis
Keyword(s):  
Uca Pugnax ◽  
Fiddler Crabs ◽  
Uca Pugilator

scholarly journals THE REGULATION OF WATER AND SALT BY THE FIDDLER CRABS, UCA PUGNAX AND UCA PUGILATOR

1959 ◽  
Vol 116 (1) ◽  
pp. 76-87 ◽  
Author(s):  
JAMES W. GREEN ◽  
MARY HARSCH ◽  
LLOYD BARR ◽  
C. LADD PROSSER
Keyword(s):  
Uca Pugnax ◽  
Fiddler Crabs ◽  
Uca Pugilator

How dear is my enemy: Intruder-resident and resident-resident encounters in male sand fiddler crabs (Uca pugilator)

Behaviour ◽  
2006 ◽  
Vol 143 (5) ◽  
pp. 597-617 ◽  
Author(s):  
Ann E. Pratt ◽  
Denson Kelly McLain
Keyword(s):  
Energy Expenditure ◽  
Fiddler Crabs ◽  
Uca Pugilator ◽  
Dear Enemy ◽  
Surface Activities ◽  
Display Area ◽  
Mating Opportunities

AbstractMale sand fiddler crabs (Uca pugilator) defend territories that consist of a breeding burrow and a display area where they wave their claw to attract females. Burrow-holding males engage in agonistic contests with both intruding males that attempt burrow take-overs and with other territory-holding neighbors that apparently attempt to limit waving or other surface activities of rivals. Contests employ one or more behavioral elements that range from no claw contact to use of the claw to push, grip, or flip an opponent. We placed each observed element into one of six groups ranked by intensity, which was based on the degree of claw contact and apparent energy expenditure. In the field, contests with intruders began at higher intensity and escalated more rapidly than did those with neighbors. Thus, U. pugilator males exhibit a dear enemy response toward neighbors. However, resident-resident contests increased in intensity when burrows were close, neighbors faced each other when exiting burrows, and neighbors were of similar size. Proximity and orientation determine the ease with which a neighbor may be engaged. Also, neighbors that are close and of similar size pose a greater threat to mating opportunities, favoring heightened intensity of contests.

Differential molt-induced atrophy in the dimorphic claws of male fiddler crabs,Uca pugnax

1992 ◽  
Vol 263 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Safaa Z. M. Ismail ◽  
Donald L. Mykles
Keyword(s):  
Uca Pugnax ◽  
Fiddler Crabs

Immediate effects of an oil spill on behavior of fiddler crabs (Uca pugnax)

1991 ◽  
Vol 20 (3) ◽  
pp. 404-409 ◽  
Author(s):  
Joanna Burger ◽  
John Brzorad ◽  
Michael Gochfeld
Keyword(s):  
Oil Spill ◽  
Uca Pugnax ◽  
Fiddler Crabs
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