Aggression by polyembryonic wasp soldiers correlates with kinship but not resource competition
Kin selection theory predicts that individuals will show less aggression and more altruism towards relatives. However, recent theoretical developments suggest that with limited dispersal, competition between relatives can override the effects of relatedness. The predicted and opposing influences of...
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| Veröffentlicht in: | Nature (London) 2004-08, Vol.430 (7000), p.676-679 |
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| creator | Giron, D Dunn, D.W Hardy, I.C.W Strand, M.R |
| description | Kin selection theory predicts that individuals will show less aggression and more altruism towards relatives. However, recent theoretical developments suggest that with limited dispersal, competition between relatives can override the effects of relatedness. The predicted and opposing influences of relatedness and competition are difficult to approach experimentally because conditions that increase average relatedness among individuals also tend to increase competition. Polyembryonic wasps in the family Encyrtidae are parasites whose eggs undergo clonal division to produce large broods. These insects have also evolved a caste system: some embryos in a clone develop into reproductive larvae that mature into adults, whereas others develop into sterile soldier larvae that defend siblings from competitors. In a brood from a single egg, reproductive altruism by soldiers reflects clone-level allocation to defence at the cost of reproduction, with no conflict between individuals. When multiple eggs are laid into a host, inter-clone conflicts of interest arise. Here we report that soldier aggression in Copidosoma floridanum is inversely related to the genetic relatedness of competitors but shows no correlation with the level of resource competition. |
| doi_str_mv | 10.1038/nature02721 |
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However, recent theoretical developments suggest that with limited dispersal, competition between relatives can override the effects of relatedness. The predicted and opposing influences of relatedness and competition are difficult to approach experimentally because conditions that increase average relatedness among individuals also tend to increase competition. Polyembryonic wasps in the family Encyrtidae are parasites whose eggs undergo clonal division to produce large broods. These insects have also evolved a caste system: some embryos in a clone develop into reproductive larvae that mature into adults, whereas others develop into sterile soldier larvae that defend siblings from competitors. In a brood from a single egg, reproductive altruism by soldiers reflects clone-level allocation to defence at the cost of reproduction, with no conflict between individuals. When multiple eggs are laid into a host, inter-clone conflicts of interest arise. Here we report that soldier aggression in Copidosoma floridanum is inversely related to the genetic relatedness of competitors but shows no correlation with the level of resource competition.</description><identifier>ISSN: 0028-0836</identifier><identifier>EISSN: 1476-4687</identifier><identifier>DOI: 10.1038/nature02721</identifier><identifier>PMID: 15295600</identifier><identifier>CODEN: NATUAS</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>aggression ; Aggression - physiology ; Aggressiveness ; Altruism ; Animal and plant ecology ; Animal behavior ; Animal, plant and microbial ecology ; Animals ; Autoecology ; Biological and medical sciences ; Competition ; Competitive Behavior - physiology ; Conflicts of interest ; Copidosoma ; Copidosoma floridanum ; Eggs ; Encyrtidae ; Female ; Fundamental and applied biological sciences. Psychology ; Genetics ; Heredity - physiology ; Humanities and Social Sciences ; Hymenoptera ; insect behavior ; Insects ; kinship ; Larva - growth & development ; Larva - physiology ; Larvae ; letter ; Life Sciences ; Male ; multidisciplinary ; nutrient availability ; Parasites ; Pedigree ; Protozoa. Invertebrata ; Reproduction - physiology ; reproductive altruism ; reproductive behavior ; Science ; Science (multidisciplinary) ; Sex Characteristics ; Sex Ratio ; soldier insects ; Vespidae ; Wasps - embryology ; Wasps - growth & development ; Wasps - physiology</subject><ispartof>Nature (London), 2004-08, Vol.430 (7000), p.676-679</ispartof><rights>Macmillan Magazines Ltd. 2004</rights><rights>2004 INIST-CNRS</rights><rights>COPYRIGHT 2004 Nature Publishing Group</rights><rights>Copyright Macmillan Journals Ltd. Aug 5, 2004</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c668t-8a03d6fff8320af9798185e2d23efb94b8e0c7037affa818e18b5f41cfc14e743</citedby><cites>FETCH-LOGICAL-c668t-8a03d6fff8320af9798185e2d23efb94b8e0c7037affa818e18b5f41cfc14e743</cites><orcidid>0000-0001-8356-0983</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/nature02721$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/nature02721$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16002700$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15295600$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-02874716$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Giron, D</creatorcontrib><creatorcontrib>Dunn, D.W</creatorcontrib><creatorcontrib>Hardy, I.C.W</creatorcontrib><creatorcontrib>Strand, M.R</creatorcontrib><title>Aggression by polyembryonic wasp soldiers correlates with kinship but not resource competition</title><title>Nature (London)</title><addtitle>Nature</addtitle><addtitle>Nature</addtitle><description>Kin selection theory predicts that individuals will show less aggression and more altruism towards relatives. However, recent theoretical developments suggest that with limited dispersal, competition between relatives can override the effects of relatedness. The predicted and opposing influences of relatedness and competition are difficult to approach experimentally because conditions that increase average relatedness among individuals also tend to increase competition. Polyembryonic wasps in the family Encyrtidae are parasites whose eggs undergo clonal division to produce large broods. These insects have also evolved a caste system: some embryos in a clone develop into reproductive larvae that mature into adults, whereas others develop into sterile soldier larvae that defend siblings from competitors. In a brood from a single egg, reproductive altruism by soldiers reflects clone-level allocation to defence at the cost of reproduction, with no conflict between individuals. When multiple eggs are laid into a host, inter-clone conflicts of interest arise. Here we report that soldier aggression in Copidosoma floridanum is inversely related to the genetic relatedness of competitors but shows no correlation with the level of resource competition.</description><subject>aggression</subject><subject>Aggression - physiology</subject><subject>Aggressiveness</subject><subject>Altruism</subject><subject>Animal and plant ecology</subject><subject>Animal behavior</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Competition</subject><subject>Competitive Behavior - physiology</subject><subject>Conflicts of interest</subject><subject>Copidosoma</subject><subject>Copidosoma floridanum</subject><subject>Eggs</subject><subject>Encyrtidae</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. 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| ispartof | Nature (London), 2004-08, Vol.430 (7000), p.676-679 |
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| subjects | aggression Aggression - physiology Aggressiveness Altruism Animal and plant ecology Animal behavior Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences Competition Competitive Behavior - physiology Conflicts of interest Copidosoma Copidosoma floridanum Eggs Encyrtidae Female Fundamental and applied biological sciences. Psychology Genetics Heredity - physiology Humanities and Social Sciences Hymenoptera insect behavior Insects kinship Larva - growth & development Larva - physiology Larvae letter Life Sciences Male multidisciplinary nutrient availability Parasites Pedigree Protozoa. Invertebrata Reproduction - physiology reproductive altruism reproductive behavior Science Science (multidisciplinary) Sex Characteristics Sex Ratio soldier insects Vespidae Wasps - embryology Wasps - growth & development Wasps - physiology |
| title | Aggression by polyembryonic wasp soldiers correlates with kinship but not resource competition |
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