Data Availability: All relevant data are within the paper and its Supporting Information files. Slow bounce was often associated with slow movements forward, incorporating an erratic bouncing motion, and a flared arm crown (S4 Movie). Jetting individuals were uniformly pale or dark brown, and were not observed to exhibit complex body patterns. It appeared that both animals were eating while in this position. In 2012–2014 we were able to obtain several live specimens of this species, which remains without a formal description. Trawls capturing individuals in the 1970’s operated at depths ranging from 7–100 m, however exact depths of capture during those collections are not known. A dark eye bar (Fig 2I) was visible in all body color patterns, and sometimes extended anteriorly and/or posteriorly beyond the eye. Females are typically larger and sometimes become aggressive. In 2012, additional live specimens of LPSO became available through the aquarium trade. Yes before the start of the next class. Funding: Funding was provided to RLC by the University of California Museum of Paleontology. Shrimp were caught by extending a dorsal arm slowly, in an arched fashion, lowering it over the front end of the shrimp and touching it on the carapace. All photos by RLC. From Wikimedia Commons, the free media repository. The two would share food beak-to-beak and mate every day. A.-B. Growth is poorly known in LPSO. Females typically occupied the same den for the entire duration of captivity, especially after beginning to lay eggs. Affiliations We used conventional terminology of gross morphology [13]. A behavioral and genetic study of multiple paternity in a polygamous marine invertebrate, Octopus oliveri. In 2012–2014 we were … At the time, shrimps (Peneus vannemai and P. occidentalis) were taken before stomatopods (Lysiosquilla panamica and Squilla aculeata), which were taken before crabs (Callinectes arquatus and C. toxotes). Along with Octopus chierchiae Jatta, 1889 and Octopus zonatus Voss, 1968 from the Western Atlantic and Caribbean [2], LPSO is one of the ‘Harlequin’ octopuses identified by their semi-permanent stripes and spots [3]. In 2012–2014 we were able to obtain several live specimens of this species, which remains without a formal description. When the larger Pacific striped octopus was first observed in the 1970s, its unusual social and mating behavior were so strange that no one would publish it. Previously, pair bonding has been noted to occur in this species [5]. https://doi.org/10.1371/journal.pone.0134152.g002. Science Friday: The Strangely Social Life of the Larger Pacific Striped Octopus; Behavior and Body Patterns of the Larger Pacific Striped Octopus; Penn’s Sunday School: Octopodes and the Cephs, and Laws Make Weasels; How male octopuses avoid being eaten by hungry females; Social Octopus Species Shatters Beliefs About Ocean Dwellers ; Collection, Transport and Husbandry of the Coconut Octopus Additional individuals have been collected in Guatemala (Smithsonian Institution Invertebrate Zoology USNM 817793, a single individual incorrectly identified as Octopus spilotus) and Magdelena Bay, Baja Sur, Mexico (Dr. Gustavo Hinojosa Arango, personal communication). The only individual to use them for denning was a senescing female that hid behind pebbles in the corner of a tank for the four weeks prior to her death. Beak-to-beak mating, dens shared by mating pairs, inking during mating and extended spawning were mentioned in publications, and enticed generations of cephalopod biologists. In cases when air bubbles were trapped in barnacles and conch shells used for dens (as occurred sometimes during tank cleaning), octopuses turned the shells over, which removed the air bubbles, before entering. In shallow-water octopuses, female senescence typically begins shortly after egg laying, and death coincides approximately with hatching [31]. Aug. 12, 2015 — When the larger Pacific striped octopus was first observed in the 1970s, its unusual social and mating behavior were so strange that no one would publish it. Abdelmalek Faraj, Nicolas Bez, Spatial considerations for the Dakhla stock of Octopus vulgaris: indicators, patterns, and fisheries interactions, ICES Journal of Marine Science, 10.1093/icesjms/fsm160, 64, 9, (1820-1828), (2007). Terms used to describe skin morphology follow those defined and illustrated previously [8,9,14–21]. Behavior and Body Patterns of the Larger Pacific Striped Octopus . Roy L. Caldwell et al (2015), PLoS ONE http://dx.doi.org/10.1371/journal.pone.0134152Over thirty years ago anecdotal accounts of the undescribed Larger Pacific Striped Octopus suggested behaviors previously unknown for octopuses. Crossref; PubMed; Scopus (22) Google Scholar]. Mating almost invariably occurred beak-to-beak and involved agonistic behavior (Fig 4; S6 Movie). To increase transparency, PeerJ operates a system of 'optional signed reviews and history'. Adults usually weigh around 15 kg (33 lb), with an arm span of up to 4.3 m (14 ft). One male and female pair housed together (of the four male-female pairs that shared a tank) generally spent most of their time in separate dens, but occasionally both animals occupied the same den for several hours at a time. No, Is the Subject Area "Bird eggs" applicable to this article? 2015 Behavior and Body Patterns of the Larger Pacific Striped Octopus. File:Behavior-and-Body-Patterns-of-the-Larger-Pacific-Striped-Octopus-pone.0134152.s002.ogv. 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