Zobrazeno 1 - 10
of 35
pro vyhledávání: '"G A Zweers"'
Autor:
G. A. Zweers, Ron G. Bout
Publikováno v:
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 131:197-205
In birds, the ability to move the upper beak relative to the braincase has been the subject of many functional morphological investigations, but in many instances the adaptive significance of cranial kinesis remains unclear. Alternatively, cranial ki
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7062f3a24dff982dd5305a0327a0e71
https://doi.org/10.1016/s1095-6433(01)00470-6
https://doi.org/10.1016/s1095-6433(01)00470-6
Publikováno v:
Netherlands Journal of Zoology. 51:243-262
The avian neck is a complex, kinematically redundant system that controls the position and orientation of the head. The kinematic redundancy is resolved by movement principles, which result in characteristic movement patterns. General neck movement p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2499554b6d91dce848a0ff82646cb2c
https://doi.org/10.1163/156854201x00297
https://doi.org/10.1163/156854201x00297
Autor:
G. A. Zweers, Sander W. S. Gussekloo
Publikováno v:
Netherlands Journal of Zoology, 49(1), 29-43
Netherlands Journal of Zoology 49 (1999) 1
Netherlands Journal of Zoology 49 (1999) 1
Molecular analyses show that modern birds can be divided into two major taxa, the Paleognathae and the Neognathae. This division was already proposed by Merrem in 1813, based on morphological characters. One of the most prominent discriminating chara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74409a8878d421787a13f27a7d665ccc
https://doi.org/10.1163/156854299x00038
https://doi.org/10.1163/156854299x00038
Autor:
P Dullemeijer, G A Zweers
Publikováno v:
European Journal of Morphology. 35:354-364
Over the last decades the image of vertebrate morphology has become at some places chaotic and even opportunistic, which seems to be due to the lack of appraisal or recognition of the leading concepts of the field. This paper analyses the changes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c623a482f462c7a3bef7e4c16bd7ae0c
https://doi.org/10.1076/ejom.35.5.354.13086
https://doi.org/10.1076/ejom.35.5.354.13086
Autor:
A.F.C. Gerritsen, G. A. Zweers
Publikováno v:
Netherlands Journal of Zoology. 47:161-208
Many paleontological studies conclude that all orders of modern birds had developed from a dinosaurian phylogenetic ancestry by the mid-Cretaceous. Recently, however, an alternative hypothesis states that the only modern-bird-like Cretaceous bird was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0334e15771b8b62d33f1a2e8db9fc6bf
https://doi.org/10.1163/156854297x00166
https://doi.org/10.1163/156854297x00166
Autor:
G. A. Zweers, J. C. Vanden Berge
Publikováno v:
Netherlands Journal of Zoology. 47:255-287
A morphospace has been developed that connects the ancestral pecking design to filter feeding in birds. The morphospace represents a pattern of transformations in which first surface tension transport of drops along a slightly lengthened and slenderi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9646c488fe87e9b1394ca63f79b63fc4
https://doi.org/10.1163/156854297x00021
https://doi.org/10.1163/156854297x00021
Publikováno v:
The Condor. 97:297-324
We propose a model of filter feeding in Caribbean (Phoenicopterus r. ruber) and Greater Flamingos (P. r. roseus) that is based on a description of the oropharyngeal integument, using SEM and radiography, and analysis of kinematics and performances. O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6c1b9e52228b38b2f595996e252b759
https://doi.org/10.2307/1369017
https://doi.org/10.2307/1369017
Autor:
Jan Heidweiller, G. A. Zweers
Publikováno v:
Zoomorphology. 111:217-228
Development of the drinking mechanism from the day of hatching to the 4 week old chick was studied in relation to the growth of the oropharynx and drinking performance. Results indicate that due to scaling effects in the growing oropharynx, physical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65d748ee832098e3fd6ab20de5c99f24
https://doi.org/10.1007/bf01633010
https://doi.org/10.1007/bf01633010
Publikováno v:
Zoomorphology. 111:141-159
Drinking was studied in adult chickens by cinematography and radiography. Three subsequent behavioral phases occur. (1) Water is transported from the water box into the oropharynx when the beak is immersed. Then delicately tuned cyclic motion pattern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57597010dd69a22aa45e92ae83c83634
https://doi.org/10.1007/bf01632904
https://doi.org/10.1007/bf01632904
Publikováno v:
Journal of Experimental Zoology. 262:135-153
Development of head neck motion patterns is studied in drinking chickens to examine (1) general motion principles, (2) ontogenetic changes in these patterns, and (3) whether pattern changes are due to scaling effects during growth. Behavioral pattern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aac826e6aa675c803a7b5e7ec9fc9703
https://doi.org/10.1002/jez.1402620204
https://doi.org/10.1002/jez.1402620204