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Science 30 October 1998:
Vol. 282. no. 5390, p. 841
DOI: 10.1126/science.282.5390.841n
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This Week in Science

Why are certain organisms so successful when introduced into a new environment? One possiblity is behavior modification. Holway et al. (p. 949; see the news story by Strauss) identify loss of intraspecific aggression--and a concomitant lack of territoriality--in an introduced species of ant. In its native range, the Argentine ant exhibits pronounced aggression, but seldom do colonies introduced in southern California. In paired lab combinations, nonaggressive colonies have lower mortality and actually cooperate, providing significant advantages over aggressive, territorial combinations.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)