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https://hdl.handle.net/1959.11/7972
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DC Field | Value | Language |
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dc.contributor.author | Marvelde, Luc te | en |
dc.contributor.author | McDonald, Paul | en |
dc.contributor.author | Kazem, AJN | en |
dc.contributor.author | Wright, Jonathan | en |
dc.date.accessioned | 2011-07-11T10:04:00Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Animal Behaviour, 77(3), p. 727-735 | en |
dc.identifier.issn | 1095-8282 | en |
dc.identifier.issn | 0003-3472 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/7972 | - |
dc.description.abstract | Provisioning visits by helpers are normally assumed to confer positive fitness effects on nestlings, but few studies have actually examined the nutritional value of items helpers fed to offspring. In the cooperatively breeding bell miner, 'Manorina melanophrys', helpers deliver large proportions of 'lerp', a sugary secretion of psyllids (Hemiptera; Psyllidae). Although lerp is a major food type of adults, its nutritional value is uncertain, especially since nestlings in other nectarivorous species are usually fed only protein-rich arthropods. Helpers in this system are predominantly male and are often unrelated to broods they aid, suggesting helping might be a sexual display, with any nutritional benefits to nestlings being of secondary importance. Detailed observations revealed that the proportion of lerp delivered increased with nestling age, but that it did not differ between helpers and parents, or between related and unrelated helpers. Variation in delivered biomass (lerp+arthropods) had a positive effect on nestling condition, but variation in the proportion of prey constituted by lerp had no measurable effect on nestling mass or condition. Finally, the total amount of food, nestling body mass and condition were all positively related to the number of helpers provisioning broods. These results are consistent with helping in bell miners operating as cooperative investment in brood fitness. Given that lerp was as effective as invertebrate prey in promoting growth, these results also suggest a valid nutritional role for this easily procured food, presumably facilitated by the unusually early development of nestling digestive tracts to utilize these simple sugars. | en |
dc.language | en | en |
dc.publisher | Elsevier Ltd | en |
dc.relation.ispartof | Animal Behaviour | en |
dc.title | Do helpers really help? Provisioning biomass and prey type effects on nestling growth in the cooperative bell miner | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1016/j.anbehav.2008.12.008 | en |
dc.subject.keywords | Behavioural Ecology | en |
dc.subject.keywords | Ethology and Sociobiology | en |
dc.subject.keywords | Animal Behaviour | en |
local.contributor.firstname | Luc te | en |
local.contributor.firstname | Paul | en |
local.contributor.firstname | AJN | en |
local.contributor.firstname | Jonathan | en |
local.subject.for2008 | 060801 Animal Behaviour | en |
local.subject.for2008 | 060201 Behavioural Ecology | en |
local.subject.for2008 | 060304 Ethology and Sociobiology | en |
local.subject.seo2008 | 970106 Expanding Knowledge in the Biological Sciences | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | pmcdon21@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20110630-174848 | en |
local.publisher.place | United Kingdom | en |
local.format.startpage | 727 | en |
local.format.endpage | 735 | en |
local.identifier.scopusid | 59849091221 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 77 | en |
local.identifier.issue | 3 | en |
local.contributor.lastname | Marvelde | en |
local.contributor.lastname | McDonald | en |
local.contributor.lastname | Kazem | en |
local.contributor.lastname | Wright | en |
dc.identifier.staff | une-id:pmcdon21 | en |
local.profile.orcid | 0000-0002-9541-3304 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:8145 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Do helpers really help? Provisioning biomass and prey type effects on nestling growth in the cooperative bell miner | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Marvelde, Luc te | en |
local.search.author | McDonald, Paul | en |
local.search.author | Kazem, AJN | en |
local.search.author | Wright, Jonathan | en |
local.uneassociation | Unknown | en |
local.year.published | 2009 | en |
Appears in Collections: | Journal Article |
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