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1、最权威的国际教育服务平台生物类话题是雅思阅读常考话题 Collectiveintelligence:Antsandbrain'sneurons STANFORD-Anindividualantisnotverybright,butantsinacolony,operatingasacollective,doremarkablethings. Asingleneuroninthehumanbraincanrespondonlytowhattheneuronsconnectedtoitaredoing,butallofthemtogethercanbeImmanuelKant. Thatr
2、esemblanceiswhyDeborahM.Gordon,StanfordUniversityassistantprofessorofbiologicalsciences,studiesants. "I'minterestedinthekindofsystemwheresimpleunitstogetherdobehaveincomplicatedways,"shesaid. Noonegivesordersinanantcolony,yeteachantdecideswhattodonext. Forinstance,anantmayhaveseveraljobdescriptio
3、ns.Whenthecolonydiscoversanewsourceoffood,anantdoinghousekeepingdutymaysuddenlybecomeaforager.Orifthecolony'sterritorysizeexpandsorcontracts,patrollerantschangetheshapeoftheirreconnaissancepatterntoconformtothenewrealities.Sincenooneisinchargeofanantcolony-includingthemisnamed"queen,"whichissimplyab
4、reeder-howdoeseachantdecidewhattodo? Thiskindofundirectedbehaviorisnotuniquetoants,Gordonsaid.Howdobirdsflyinginaflockknowwhentomakeacollectiverightturn?Allanchoviesandotherschoolingfishseemtoturninunison,yetnoonefishistheleader. GordonstudiesharvesterantsinArizonaand,bothinthefieldandinherlab,the
5、so-calledArgentineantsthatareubiquitoustocoastalCalifornia. ArgentineantscametoLouisianainasugarshipmentin1908.TheyweredrivenoutoftheGulfstatesbythefireantandinvadedCalifornia,wheretheyhavedisplacedmostofthenativeantspecies.OneofthethingsGordonisstudyingishowtheydidso.Noonehaseverseenanantwarinvolv
6、ingthe资料来源：教育优选http://www.jybest.cn/最权威的国际教育服务平台Argentinespeciesandthenativespecies,soit'snotclearwhethertheyarequietlyaggressiveorjustfindwaysoftakingoverfoodresourcesandterritory. TheArgentineantsinherlabalsoarebeingstudiedtohelpherunderstandhowtheychangebehaviorasthesizeofthespacetheyareexplorin
7、gvaries. "Theantsaregoodatfindingnewplacestoliveinandgoodatfindingfood,"Gordonsaid."We'reinterestedinfindingouthowtheydoit." HerantsareconfinedbyPlexiglaswallsandanastyglue-likesubstancealongthetops
