Short Note

Polar Biology

, Volume 27, Issue 6, pp 380-382

First online:

Synchronous moulting of krill, Euphausia superba, in the Bransfield Strait (Antarctica)

  • G. RotllantAffiliated withInstitut de Ciències del Mar (CMIMA-CSIC) Email author 
  • , J. B. CompanyAffiliated withInstitut de Ciències del Mar (CMIMA-CSIC)
  • , X. BusquetsAffiliated withHospital Universitario Son Dureta
  • , F. BuchholzAffiliated withBiologische Anstalt Helgoland (AWI)

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A large mass of cast exoskeletons of the Antarctic krill Euphausia superba was fished in February 2001 at one station in the Bransfield Strait between 411 and 153 m. We assume that the mass of cast exoskeletons originated from a synchronous moult of thousands of individuals. Depending on the size of the krill moulted, the amount of exoskeletons corresponded to a krill abundance of 1,480–48,000 individuals per 1,000 m3.