Sex identification and mating in the blue-ringed octopus, Hapalochlaena lunulata

@article{Cheng2000SexIA,
  title={Sex identification and mating in the blue-ringed octopus, Hapalochlaena lunulata
},
  author={M. W. Cheng and R. Caldwell},
  journal={Animal Behaviour},
  year={2000},
  volume={60},
  pages={27-33}
}
We studied the reproductive behaviour of the blue-ringed octopus, Hapalochlaena lunulata, in the laboratory by examining 15 male-male and nine male-female interactions. [...] Key Result The initiation of physical contact was independent of sex, size or residency status, and there were no noticeable changes in behaviour such as sexual displays associated with courtship or aggression prior to contact.Expand
Hapalochlaena maculosa ( Cephalopoda : Octopodidae )
The southern blue-ringed octopus, Hapalochlaena maculosa (Hoyle, 1883) is a nocturnal species that exhibits a mating system in which females hold sperm from multiple males over a one to two monthExpand
Mating behaviour and postcopulatory fertilization patterns in the southern blue-ringed octopus, Hapalochlaena maculosa
TLDR
Although this study found no evidence for female postcopulatory selection of male sperm, anecdotal evidence suggests that female H. maculosa might benefit from polyandry if chemical processes can favour clutch fertilization by unrelated males. Expand
Nocturnal mating behaviour and dynamic male investment of copulation time in the southern blue-ringed octopus, Hapalochlaena maculosa (Cephalopoda: Octopodidae)
TLDR
Male strategic allocation of spermatophores based female mating history is an important factor influencing mating behaviours of this species, suggesting that male H. maculosa are not able to discriminate the sex of conspecifics. Expand
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Octopus mating dynamics may be more behaviorally complex than initially assumed and the lack of prominent visual displays in these mating trials indicates the importance of chemical cues in Octopus mating systems, as has been demonstrated for other cephalopods. Expand
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TLDR
Frequent male–female copulations and intense male–male aggression were consistent behavioral components of mating in A. aculeatus, and a male-typical body pattern appeared to facilitate distant sex identification. Expand
Reproductive behaviour and cross-mating of two closely related pygmy squids Idiosepius biserialis and Idiosepius thailandicus (Cephalopoda: Idiosepiidae)
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This study revealed that the two ‘species’ are not reproductively isolated and reproductive behaviour of crossed pairs was similar to those of individual species. Expand
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TLDR
The hypothesis that, at least in some lineages, sexual selection may account for the divergence in reproductive traits of male octopuses is supported. Expand
Preliminary report of specific behaviours of juvenile greater blue-ringed octopus Hapalochlaena lunulata (Quoy and Gaimard, 1832)
TLDR
Five days after beginning rearing, iridescent blue rings, similar to those in the adult, appeared on the entire skin of the octopus and continued to be expressed with varying intensity and when theOctopus was behaving aggressively it flashed the blue rings. Expand
Sexual cannibalism by Octopus cyanea on a Pacific coral reef
TLDR
This report reports the first documented case of sexual cannibalism in a large female Octopus cyanea observed continuously for 2.5 days in Palau, Micronesia, when she was out of her den. Expand
Chemical cues correlate with agonistic behaviour and female mate choice in the southern blue-ringed octopus, Hapalochlaena maculosa (Hoyle, 1883) (Cephalopoda: Octopodidae)
TLDR
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, although the mechanisms underlying these responses and subsequent copulatory access to females by males remain unknown. Expand
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