Chemical cues correlate with agonistic behaviour and female mate choice behaviour in the southern blue-ringed Octopus, Hapalochlaena maculosa (Cephalopoda: Octopodidae)

Morse, Peter, Zenger, Kyall R., McCormick, Mark I., Meekan, Mark G., and Huffard, Christine L. (2017) Chemical cues correlate with agonistic behaviour and female mate choice behaviour in the southern blue-ringed Octopus, Hapalochlaena maculosa (Cephalopoda: Octopodidae). Journal of Molluscan Studies, 83 (1). pp. 79-87.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1093/mollus/eyw045
 
11


Abstract

Chemoreception cues potentially influence intraspecific interactions of cephalopods, including mate choice. However, at present there is limited empirical evidence demonstrating whether cephalopods can use olfaction to identify the sex or identity of conspecifics. This study examined the responses of the southern blueringed octopus, Hapalochlaena maculosa (Hoyle, 1883), to conspecific odours during controlled laboratory trials. The ventilation rates in aquaria of 25 wild-sourced animals were measured during four treatments: baseline, sea water, sea water containing male conspecific odour and sea water containing female conspecific odour. When used as 'receivers' in trials, female H. maculosa significantly increased their ventilation rates in response to male odours, but not to female odours. However, female response decreased significantly with the receiver's size during female-odour treatments. The ventilation rates of male H. maculosa were statistically similar in all treatments. However, their ventilation rates showed a significant progressive increase over the observation period during male and female-odour treatments. Eighteen of these animals (nine females and nine males) were used in focal-animal trials 1 week after odour-cue experiments. Of these individuals, females were significantly more receptive to copulation attempts, and spent significantly more time per day in copulation, with males whose odours had elicited a weaker ventilation response in prior trials. These results suggest that female H. maculosa can use chemosensory cues to discriminate the sex, and possibly identity, of conspecifics and that this information might influence their mate choice. However, the mechanisms underlying these responses and subsequent copulatory access to females by males remain unknown.

Item ID: 47759
Item Type: Article (Refereed Research - C1)
ISSN: 1464-3766
Funders: Australian and Pacific Science Foundation
Date Deposited: 31 Mar 2017 00:27
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
Downloads: Total: 11
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page