Dominic Hayden
Sex-specific mediation of foraging in the shore crab, Carcinus maenas
Hayden, Dominic; Jennings, Alice; Müller, Carsten; Pascoe, David; Bublitz, Ralf; Webb, Heather; Breithaupt, Thomas; Watkins, Lloyd; Hardege, Jörg
Authors
Alice Jennings
Carsten Müller
David Pascoe
Ralf Bublitz
Heather Webb
Dr Thomas Breithaupt T.Breithaupt@hull.ac.uk
Emeritus Fellow
Lloyd Watkins
Jörg Hardege
Abstract
Experiments were conducted to investigate the sex-specific differences to feeding responses of the shore crab Carcinus maenas throughout the year. Results demonstrate that female shore crabs exhibit stronger feeding responses than males throughout the year with a significantly reduced feeding response in males during the summer months' reproductive season. We also studied the possible function(s) of the moulting hormone, 20-hydroxyecdysone (Crustecdysone) that has been described as a potential female-produced sex pheromone to initiate male reproductive behaviour in a number of crustaceans. We recently presented evidence that for shore crabs this is not the case and now show that the steroid is instead functioning as a sex-specific feeding deterrent protecting the moulting 'soft' female crabs. Whilst male shore crabs were deterred from prey (Mytilus edulis) and synthetic feeding stimulants glycine and taurine when these feeding stimulants were spiked with crustecdysone, intermoult female crabs were significantly less affected and rarely deterred from feeding. This sex specificity of the moulting hormone, in combination with the female sex pheromone, which has no anti-feeding properties, ensures that male crabs mate with soft-shelled, moulted females rather than engage in cannibalism, such as found frequently in cases when soft-shelled females are exposed to intermoult females. © 2007 Elsevier Inc. All rights reserved.
Citation
Hayden, D., Jennings, A., Müller, C., Pascoe, D., Bublitz, R., Webb, H., Breithaupt, T., Watkins, L., & Hardege, J. (2007). Sex-specific mediation of foraging in the shore crab, Carcinus maenas. Hormones and Behavior, 52(2), 162-168. https://doi.org/10.1016/j.yhbeh.2007.03.004
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 15, 2007 |
Online Publication Date | Mar 21, 2007 |
Publication Date | 2007-08 |
Journal | HORMONES AND BEHAVIOR |
Print ISSN | 0018-506X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 52 |
Issue | 2 |
Pages | 162-168 |
DOI | https://doi.org/10.1016/j.yhbeh.2007.03.004 |
Keywords | Carcinus maenas; Pheromone; Crustecdysone; 20-Hydroxyecdysone; Feeding |
Public URL | https://hull-repository.worktribe.com/output/391432 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0018506X07000372?via%3Dihub#! |
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