Long-term high-density occupation of a site by Octopus tetricus and possible site modification due to foraging behavior

  title={Long-term high-density occupation of a site by Octopus tetricus and possible site modification due to foraging behavior},
  author={Peter Godfrey‐Smith and Matthew Lawrence},
  journal={Marine and Freshwater Behaviour and Physiology},
  pages={261 - 268}
We report observations of wild octopuses (Octopus tetricus) living in close proximity at a site centered on a single den that has been occupied since at least November 2009. Numbers observed on survey dives range from 2 to 11 (average of 5.48). We hypothesize that long-term occupation of the site has led to its physical modification through the accumulation of shells brought in during foraging, and that this “ecosystem engineering” has in turn resulted in higher densities being viable at the… 

A second site occupied by Octopus tetricus at high densities, with notes on their ecology and behavior

Wild octopuses (Octopus tetricus) are reported living at high density at a rock outcrop, the second such site known, and behavior at this second site confirms that complex social interactions also occur in association with natural substrate, and suggests that social interactions are more wide spread among octopus than previously recognized.

An experimental assessment of social tolerance and den ecology in a high-density octopus population

Evidence of possible antisocial den use by O. briareus is presented, a modification of the default ‘asocial’ ignoring of conspecifics typically attributed to octopus, likely in response to the high population density and may imply behavioural plasticity.

Dwellers in dens on sandy bottoms: Ecological and behavioural traits of Octopus vulgaris

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Summary: The Sydney octopus (Octopus tetricus) occurs in unusual numbers on a shell bed of its prey remains that have accumulated as an extended midden where additional octopuses excavate dens. Here,

Octopus engineering, intentional and inadvertent

ABSTRACT We previously published a description of discovery of a site where octopuses live in an unusually dense collection of individual dens near one another in a bed of scallop shells amid a rock

Preferences of the Common Octopus Octopus vulgaris Cuvier, 1797 (Cephalopoda: Octopodidae) to Artificial Nests Placed in Different Habitats at Urla Islands, Aegean Sea, Turkey

The common octopus Octopus vulgaris Cuvier, 1797 exhibits specific building den characteristics. This specific sheltering behaviour is a factor affecting distribution and abundances of octopuses in

Behavior and Body Patterns of the Larger Pacific Striped Octopus

The behavior, body color patterns, and postures of 24 adults maintained in captivity of the undescribed Larger Pacific Striped Octopus are described, which remains without a formal description.

Biomass estimates and harvest strategies for the Western Australian Octopus aff. tetricus fishery

Octopus aff. tetricus is the target of Australia’s most significant octopus fishery. We utilized both fishery-independent surveys and fishery data from spatially detailed catch and effort logbooks

Experimental Change of the Orientation of Two Populations of Talitrus saltator (Crustacea Amphipoda Talitridae) from Cap Bon (North‐Eastern Tunisia)

The orientation of sandhopper populations is adapted to the direction of the shoreline of the sandy beaches where they live; this behaviour was shown to be inherited in some Mediterranean

In the Line of Fire: Debris Throwing by Wild Octopuses

Wild octopuses at an Australian site frequently propel shells, silt, and algae through the water by releasing these materials from their arms while creating a forceful jet from the siphon held under the arm web, as suggested by several kinds of evidence.



Habitat selection and shelter use by Octopus tetricus

This study suggests that Octopus telricus are associated with rocky reef habitats during the breeding season, while a considerable portion of their life may be spent in soft-sediment habitats.

Den ecology of Octopus vulgaris Cuvier, 1797, on soft sediment: availability and types of shelter

It is concluded that the availability of solid materials necessary for den construction is a limiting factor for the distribution of O. vulgaris on soft sediment.

Behavioural interactions and activity of captive Eledone moschata: laboratory investigations of a ‘social’ octopus

  • J. Mather
  • Environmental Science
    Animal Behaviour
  • 1985

Guide to squid, cuttlefish and octopuses of Australasia

While the book focuses on spcies found in relatively shallow coastal waters (typically less than 100 metres), a few of the more bizarre deep-water species are included and a comprehensive section illustrating cuttlebones should enable users to identify most of the species found in comparatively shallow water.

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It is shown that species, sex and sexual receptivity, and dominance are most likely signaled and recognized in at least some species, and cooperation, in- cluding communication, that is based on mutualism is possible.