POSSIBLE FILTER-FEEDING IN THE EXINCT PRESBYORNIS AND THE EVOLUTION OF ANSERIFORMES (AYES)

doi:10.1134/SO044513418080159

	POSSIBLE FILTER-FEEDING IN THE EXINCT PRESBYORNIS AND THE EVOLUTION OF ANSERIFORMES (AYES)
	Zelenkov, N. V.1; Stidham, T. A.2,3
刊名	ZOOLOGICHESKY ZHURNAL
	2018-08-01
卷号	97 期号:8 页码:943-956
关键词	functional morphology skull filter-feeding Anseriformes evolution Presbyornithidae
ISSN号	0044-5134
DOI	10.1134/SO044513418080159
通讯作者	Zelenkov, N. V.(nzelen@paleo.ru)
英文摘要	The fossil avian genus Presbyornis and its relatives (Family Presbyornithidae) are almost universally considered as one of the oldest known filter-feeding specialists among Anseriformes. Such an assumption is based almost entirely on the bill morphology which in Presbyornis is very similar to that of some modern ducks. However, the quadrate bone (key element of the kinetic apparatus of the avian skull) is different in Presbyornis as compared to that in other anseriforms, and shares plesiomorphic similarities with primitive non filter-feeding galliforms. This observation alone requires a functional explanation, as no modern (filter-feeding) anseriforms possess such quadrate bone. Here, we analyze the structural adaptations to filter-feeding in the feeding apparatus of modern ducks, as developed mainly by the late Prof. F.Ya. Dzerzhinsky, and assess their presence in the skull of Presbyornis. We show that a duck-like bill is one of the few duck-like features in the skull of Presbyornis, and most other functional units of its feeding apparatus are similar to those of Galliformes. Most importantly, Presbyornis lacks features indicative of the presence of the ligament-based system fixing the lower jaw against a rostral and caudal displacement. Such fixation is necessary for powerful piston-like tongue movements which in modern ducks provide water inflow and expulsion during filtration. Thus, Presbyornis could not have effectively filtrated very small particles using high-frequency jaw and tongue movements (as do modern ducks) and most likely fed on larger objects which it filtered with slower jaw movements. Presbyornis likely illustrates an important step in the evolution of Anserifomes, when these birds switched from feeding on fixed (likely underwater) to floating food items. The acquisition of specialized filter-feeding in anatids may be viewed as a gradual process initiating from a Presbyornis-like feeding apparatus. Our conclusions highlight a slow and stepwise evolution of the complex morphological traits and emphasize a mosaic nature of intermediate forms.
资助项目	Russian Foundation for Basic Research (RFBR)[17-04-01162] ; National Natural Science Foundation of China[NSFC 41772013] ; National Natural Science Foundation of China[NSFC 41472025] ; Chinese Academy of Sciences[XDPB05]
WOS关键词	DABBLING DUCKS ; ANAS-PLATYRHYNCHOS ; MAXILLARY SYSTEM ; TROPHIC SYSTEM ; MORPHOLOGY ; EOCENE ; QUADRATE ; AVES ; PECULIARITIES ; ORGANIZATION
WOS研究方向	Zoology
语种	英语
出版者	MAIK NAUKA-INTERPERIODICA PUBL
WOS记录号	WOS:000452092500007
资助机构	Russian Foundation for Basic Research (RFBR) ; National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/9058]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Zelenkov, N. V.
作者单位	1.Russian Acad Sci, Borissiak Paleontol Inst, Moscow 117647, Russia 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Zelenkov, N. V.,Stidham, T. A.. POSSIBLE FILTER-FEEDING IN THE EXINCT PRESBYORNIS AND THE EVOLUTION OF ANSERIFORMES (AYES)[J]. ZOOLOGICHESKY ZHURNAL,2018,97(8):943-956.
APA	Zelenkov, N. V.,&Stidham, T. A..(2018).POSSIBLE FILTER-FEEDING IN THE EXINCT PRESBYORNIS AND THE EVOLUTION OF ANSERIFORMES (AYES).ZOOLOGICHESKY ZHURNAL,97(8),943-956.
MLA	Zelenkov, N. V.,et al."POSSIBLE FILTER-FEEDING IN THE EXINCT PRESBYORNIS AND THE EVOLUTION OF ANSERIFORMES (AYES)".ZOOLOGICHESKY ZHURNAL 97.8(2018):943-956.