Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/jav.02875 |
Plausible causes of seed preferences and diet composition in seed-eating passerines | |
Marone, Luis; Cueto, Victor R.; Lopez de Casenave, Javier; Zarco, Agustin; Camin, Sergio R. | |
通讯作者 | Marone, L (corresponding author), Consejo Nacl Invest Cient & Tecn, Inst Argentino Invest las Zonas Aridas IADIZA, Ecodes Desert Community Ecol Res Team, Mendoza, Argentina. ; Marone, L (corresponding author), Univ Nacl Cuyo, Fac Ciencias Exactas & Nat, Mendoza, Argentina. |
来源期刊 | JOURNAL OF AVIAN BIOLOGY |
ISSN | 0908-8857 |
EISSN | 1600-048X |
出版年 | 2021-12 |
英文摘要 | We evaluated whether seed mass, handling time, handling efficiency and profitability account for (a) preferences in controlled experiments and (b) field-diet composition of four bird species of the Monte desert, Argentina. The question of whether birds maximise their energy intake rates while feeding on seeds is assessed. We used feeding experiments with six native seed species of 0.07-0.75 mg (i.e. the seed-size range consumed in nature), which account for 0.59-0.84 of the field diet of the four birds. We measured seed-handling times and used published information on bird preferences and diets, and on seed chemistry, for further calculations. Bird preferences were always positively related to seed mass and also to seed profitability in the two intermediate-sized birds. Diet composition correlated positively with seed mass and negatively with seed profitability in three species, but some birds also showed a flexible behaviour eating the most attractive seeds according to their availability. This behaviour is not genuinely opportunistic because it only focuses on a restricted fraction of the total seed species present in the field. Contrary to expectations of species coexistence due to resource partitioning, small and large birds showed similar feeding efficiencies when eating the smaller and the larger seeds. The positive association between seed mass and profitability in several studies suggests that most birds can maximise their energy reward, on average and in the long-term, by preferring the larger seeds. A combination of potential feeding optimisation with certain flexibility in the field may characterise the feeding ecology of desert seed-eating birds. |
英文关键词 | feeding experiments handling time seed availability seed mass seed profitability |
类型 | Article ; Early Access |
语种 | 英语 |
开放获取类型 | Green Submitted, hybrid |
收录类别 | SCI-E |
WOS记录号 | WOS:000730471700001 |
WOS关键词 | CENTRAL MONTE DESERT ; FORAGING EFFICIENCY ; GRANIVOROUS BIRDS ; HANDLING TIME ; BILL STRUCTURE ; SELECTION ; SIZE ; FINCHES ; AVAILABILITY ; SPARROWS |
WOS类目 | Ornithology |
WOS研究方向 | Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/374722 |
作者单位 | [Marone, Luis; Zarco, Agustin; Camin, Sergio R.] Consejo Nacl Invest Cient & Tecn, Inst Argentino Invest las Zonas Aridas IADIZA, Ecodes Desert Community Ecol Res Team, Mendoza, Argentina; [Marone, Luis; Zarco, Agustin; Camin, Sergio R.] Univ Nacl Cuyo, Fac Ciencias Exactas & Nat, Mendoza, Argentina; [Cueto, Victor R.] Consejo Nacl Invest Cient & Tecn, Ctr Invest Esquel Montana & Estepa Patagon CIEMEP, Esquel, Chubut, Argentina; [Lopez de Casenave, Javier] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ecol Genet & Evoluc, Buenos Aires, DF, Argentina; [Lopez de Casenave, Javier] UBA, CONICET, IEGEBA, Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Marone, Luis,Cueto, Victor R.,Lopez de Casenave, Javier,et al. Plausible causes of seed preferences and diet composition in seed-eating passerines[J],2021. |
APA | Marone, Luis,Cueto, Victor R.,Lopez de Casenave, Javier,Zarco, Agustin,&Camin, Sergio R..(2021).Plausible causes of seed preferences and diet composition in seed-eating passerines.JOURNAL OF AVIAN BIOLOGY. |
MLA | Marone, Luis,et al."Plausible causes of seed preferences and diet composition in seed-eating passerines".JOURNAL OF AVIAN BIOLOGY (2021). |
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