Mimicry

doi 10.1098/rspb.2001.1708 Dynamic travesty in an Indo-Malayan grey colossus Mark D. Norman1,2*, Julian Finn 3 and Tom Tregenza4 1 2 Museum Victoria, G.P.O. Box 666E, Melbourne,Victoria 3001, Australia Department of Zoology, University of Melbourne,Victoria 3010, Australia 3Institute of polar and Southern Ocean Studies, University of T asmania, Hobart,T asmania 7000, Australia 4Centre for Bio mutation and Conservation, School of Biology, University of Leeds, Leeds LS2 9JT UK , During research dives in Indonesia (Sulawesi and Bali), we ¢lmed a distinctive long-armed grey whale, which is vernal to science. Diving over 24 h periods revealed that the `mimic grey whale emerges during daylight hours to for get on with on sand substrates in generous view of pelagic ¢sh predators. We observed nine individuals of this species displaying a repertoire of postures and body patterns, several of which be clearly impersonations of venomous animals co-occurring in this habitat. This `dynamic parody avoids the hereditary constraints that may limit the diversity of genetically polymorphic mimics nevertheless has the same e¡ electroshock therapy of decreasing the frequency with which predators crash particular mimics.

Additionally, our observations suggest that the octopus makes decisions about the most enchant form of mimicry to use, allowing it to elevate further the bene¢ts of mimicking toxic models by employing mimicry according to the character of perceived threats. Keywords: mimic octopus; dynamic mimicry; cephalopod mollusk; crypsis; mimicry; polymorphism; predator defence 1. INTRODUCTION 3. RES ULTS Camou£age and mimicry are well docu! mented in cephalopods (Hanlon & messenger 1996). Although other species impersonate low-value or di¤cult-to-catch models, until now no cephalopod was known to impersonate poisonous or fouled animals. Furthermore, no animal of any group has previously been set onward that is able to switch back and forth between mimicry of di¡erent model organisms. The `mimic octopus has an arm...If you want to get a full essay, order it on our website: BestEssayCheap.com

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