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1 January 2010 Agonistic Interactions Among Size-Matched form I and form II Male Procambarus suttkusi (Choctawhatchee Crayfish)
Paul M. Stewart, Amanda D. McKenzie, Thomas P. Simon, Amanda M. Baker
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Abstract

This study observed agonistic interactions and contests between size-matched form I vs. form I, form II vs. form II, and form I vs. form II males to establish baseline dominance orders and behavioral dynamics for Procambarus suttkusi (Choctawhatchee Crayfish). Three types of initiation behaviors, or attacks, were observed during each interaction: ambivalent contact, claw raise, and lunge. Feeding competition studies were also performed to assess the relationship between the winners of the agonistic interactions and feeding contests. Only form I vs. form I contests showed a decline in the number of interactions observed over time, but the duration of each individual agonistic interaction declined for all three types of behaviors during the thirty-minute recording period. Winners and losers did not preferentially use the same initiation behaviors as used in other studies. Previous studies also documented form I dominating form II males, but form I males did not dominate form II males in the present study. Winners of the agonistic contests won significantly more feeding contests. The results of the current study suggested that behavioral dynamics and form dominance may be species specific and that careful consideration of size differences are necessary in order to examine form dominance.

Paul M. Stewart, Amanda D. McKenzie, Thomas P. Simon, and Amanda M. Baker "Agonistic Interactions Among Size-Matched form I and form II Male Procambarus suttkusi (Choctawhatchee Crayfish)," Southeastern Naturalist 9(sp3), 231-244, (1 January 2010). https://doi.org/10.1656/058.009.s312
Published: 1 January 2010
JOURNAL ARTICLE
14 PAGES


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