Tuesday, August 29, 2017

Rise of the cephalopod

                                                    By © Hans Hillewaert, CC BY-SA 4.0,                                                                                    
A recently study published in Current Biology, looked at current trends in cephalopod abundance. They state that Cephalopod populations are extremely variable, can fluctuate wildly and are currently experiencing a boom in numbers.  Squid, cuttlefish and octopuses have a long history of being able to adapt rapidly to changing environments.

Researchers investigated long-term trends in abundance using a global time-series of catch rates. The study revealed cephalopod populations have increased over the last six decades and were unusually consistent across taxa. Study datasets spanned the last 61 years (1953 to 2013). Results show increases of 52% squid, 31% octopuses, 17% cuttlefish and sepiolids populations. One explanation could be due to elevated water temperatures due to ocean warming. This is thought to accelerate the life cycle of cephalopods when thermal ranges are not exceeded and food remains abundant.

To read the complete study [which is open access], follow the link here [and above]


Doubleday, Zoë A. et al., 2016. Global proliferation of cephalopods. Current Biology, Volume 26, Issue 10 R406 - R407. DOI: http://dx.doi.org/10.1016/j.cub.2016.04.002

Image credit: By © Hans Hillewaert, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=385705 

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