{"refrec":{"BRefID":35966,"RR":"<b>Norman, M.D.; Paul, D.; Finn, J.; Tregenza, T.</b> (2002). First encounter with a live male blanket octopus: the world ’s most sexually size-dimorphic large animal. <i>N.Z. J. Mar. Freshwat. Res. 36</i>: 733-736","BEntID":35966,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>N.Z. J. Mar. Freshwat. Res. 36</i>: 733-736","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Norman, M.D.; Paul, D.; Finn, J.; Tregenza, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Norman, M.D. <i>et al.</i>","Englishabstract":"The first encounter with a live male blanket octopus, <i>Tremoctopus violaceus</i> Chiaie, 1830, illustrates the most extreme example of sexual size-dimorphism in a non-microscopic animal. Females attain sizes of up to 2 m long—almost 2 orders of magnitude larger than the 2.4-cm-long male. Weight ratios between the sexes are at least 10 000:1 and are likely to reach 40 000:1. Sexual selection and the unique defensive strategy of carrying cnidarian stinging tentacles may both have contributed to the evolution of this extreme size-dimorphism. 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