干旱区生态环境知识资源中心(Arid): Plausible causes of seed preferences and diet composition in seed-eating passerines

Arid

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).