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Deep-Sea Octopus (Graneledone boreopacifica) Conducts the Longest-Known Egg-Brooding Period of Any Animal
PLoS ONE
  • Bruce Robison, Monterey Bay Aquarium Research Institute
  • Brad Seibel, University of Rhode Island
  • Jeffrey Drazen, University of Hawaii
Document Type
Article
Publication Date
1-1-2014
Digital Object Identifier (DOI)
https://doi.org/10.1371/journal.pone.0103437
Disciplines
Abstract

Octopuses typically have a single reproductive period and then they die (semelparity). Once a clutch of fertilized eggs has been produced, the female protects and tends them until they hatch. In most shallow-water species this period of parental care can last from 1 to 3 months, but very little is known about the brooding of deep-living species. In the cold, dark waters of the deep ocean, metabolic processes are often slower than their counterparts at shallower depths. Extrapolations from data on shallow-water octopus species suggest that lower temperatures would prolong embryonic development periods. Likewise, laboratory studies have linked lower temperatures to longer brooding periods in cephalopods, but direct evidence has not been available. We found an opportunity to directly measure the brooding period of the deep-sea octopus Graneledone boreopacifica, in its natural habitat. At 53 months, it is by far the longest egg-brooding period ever reported for any animal species. These surprising results emphasize the selective value of prolonged embryonic development in order to produce competitive hatchlings. They also extend the known boundaries of physiological adaptations for life in the deep sea.

Rights Information
Creative Commons Attribution 4.0
Citation / Publisher Attribution

PLoS ONE, v. 9, issue 7, art. e103437

Citation Information
Bruce Robison, Brad Seibel and Jeffrey Drazen. "Deep-Sea Octopus (Graneledone boreopacifica) Conducts the Longest-Known Egg-Brooding Period of Any Animal" PLoS ONE Vol. 9 Iss. 7 (2014)
Available at: http://works.bepress.com/brad-seibel/19/