title: Individual-learning ability predicts social-foraging strategy in house sparrows.
abstract: Social foragers can use either a 'producer' strategy, which involves searching for food, or a 'scrounger' strategy, which involves joining others' food discoveries. While producers rely on personal information and past experience, we may ask whether the tendency to forage as a producer is related to being a better learner. To answer this question, we hand-raised house sparrow (Passer domesticus) nestlings that upon independence were given an individual-learning task that required them to associate colour signal and food presence. Following the testing phase, all fledglings were released into a shared aviary, and their social-foraging tendencies were measured. We found a significant positive correlation between individual's performance in the individual-learning task and subsequent tendency to use searching (producing) behaviour. Individual-learning score was negatively correlated with initial fear of the test apparatus and with body weight. However, the correlation between individual learning and searching remained significant after controlling for these variables. Since it was measured before the birds entered a social group, individual-learning ability could not be the outcome of being a producer. However, the two traits may be initially associated, or individual learning could facilitate producing behaviour. To our knowledge, this is the first evidence that associates individual-learning abilities with social-foraging strategies in animal groups.
authors.affiliation: Department of Zoology, Tel Aviv University, , Tel Aviv 69978, Israel. edithkat@post.tau.ac.il
authors.forename: Edith
authors.initials: E
authors.lastname: Katsnelson
authors.forename: Uzi
authors.initials: U
authors.lastname: Motro
authors.forename: Marcus W
authors.initials: MW
authors.lastname: Feldman
authors.forename: Arnon
authors.initials: A
authors.lastname: Lotem
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D005247:Feeding Behavior / Q000502:physiology*; D007206:Individuality; D007858:Learning / Q000502:physiology*; D012919:Social Behavior; D046370:Sparrows / Q000502:physiology*
references.citation: Proc Natl Acad Sci U S A. 2002 Oct 29;99(22):14274-9
references.pmid: 12391295
references.citation: Philos Trans R Soc Lond B Biol Sci. 2002 Nov 29;357(1427):1559-66
references.pmid: 12495513
references.citation: Trends Ecol Evol. 1994 Nov;9(11):442-6
references.pmid: 21236920
references.citation: Nature. 2007 May 31;447(7144):581-4
references.pmid: 17538618
references.citation: Trends Ecol Evol. 2006 Oct;21(10):542-7
references.pmid: 16806574
references.citation: Trends Ecol Evol. 2005 Apr;20(4):187-93
references.pmid: 16701367
references.citation: Adv Study Behav. 2008;38:227-281
references.pmid: 24991063
references.citation: Ethology. 2012 Nov 1;118(11):1111-1121
references.pmid: 23226911
references.citation: Behav Genet. 2005 Sep;35(5):675-92
references.pmid: 16184494
references.citation: Proc Natl Acad Sci U S A. 2009 May 12;106(19):7893-8
references.pmid: 19416834
references.citation: Biol Rev Camb Philos Soc. 2007 May;82(2):291-318
references.pmid: 17437562
references.citation: Proc Biol Sci. 2010 Feb 22;277(1681):601-8
references.pmid: 19864281
references.citation: Anim Behav. 2000 Jul;60(1):131-140
references.pmid: 10924212
references.citation: Horm Behav. 2003 Aug;44(2):132-9
references.pmid: 13129485
references.citation: Neurosci Biobehav Rev. 2005 Feb;29(1):137-50
references.pmid: 15652261
references.citation: Proc Biol Sci. 2007 Mar 22;274(1611):755-61
references.pmid: 17251088
references.citation: Proc Natl Acad Sci U S A. 2007 Aug 7;104(32):13051-5
references.pmid: 17640898
references.citation: Learn Behav. 2004 Feb;32(1):4-14
references.pmid: 15161136
references.citation: J Comp Psychol. 1992 Jun;106(2):172-83
references.pmid: 1600722
references.citation: J Exp Zool B Mol Dev Evol. 2008 Nov 15;310(7):549-66
references.pmid: 18756522
references.citation: N Engl J Med. 2002 Jan 17;346(3):149-57
references.pmid: 11796848
references.citation: Biol Psychiatry. 2000 Mar 15;47(6):490-500
references.pmid: 10715355
references.citation: J Neurosci. 2003 Jul 23;23(16):6423-33
references.pmid: 12878682
references.citation: Proc Natl Acad Sci U S A. 2008 Oct 14;105(41):15825-30
references.pmid: 18838685
references.citation: Neurobiol Learn Mem. 2006 Sep;86(2):228-40
references.pmid: 16650783
references.citation: Q Rev Biol. 2004 Sep;79(3):241-77
references.pmid: 15529965