Search

Your search keyword '"DEKINGA, ANNE"' showing total 304 results
Start Over Author "DEKINGA, ANNE"
304 results on '"DEKINGA, ANNE"'

40. WATLAS: high throughput and real-time tracking of many small birds in the Dutch Wadden Sea

Author

Bijleveld, Allert I., primary, van Maarseveen, Frank, additional, Denissen, Bas, additional, Dekinga, Anne, additional, Penning, Emma, additional, Ersoy, Selin, additional, Gupte, Pratik, additional, de Monte, Luc, additional, Horn, Job ten, additional, Bom, Roeland A., additional, Toledo, Sivan, additional, Nathan, Ran, additional, and Beardsworth, Christine E., additional

Published
2021
Full Text
View/download PDF

41. Central‐West Siberian‐breeding Bar‐tailed Godwits (Limosa lapponica) segregate in two morphologically distinct flyway populations

Author

Bom, Roeland A., primary, Conklin, Jesse R., additional, Verkuil, Yvonne I., additional, Alves, José A., additional, de Fouw, Jimmy, additional, Dekinga, Anne, additional, Hassell, Chris J., additional, Klaassen, Raymond H. G., additional, Kwarteng, Andy Y., additional, Rakhimberdiev, Eldar, additional, Rocha, Afonso, additional, ten Horn, Job, additional, Tibbitts, T. Lee, additional, Tomkovich, Pavel S., additional, Victor, Reginald, additional, and Piersma, Theunis, additional

Published
2021
Full Text
View/download PDF

47. Central‐West Siberian‐breeding Bar‐tailed Godwits (Limosa lapponica) segregate in two morphologically distinct flyway populations.

Author

Bom, Roeland A., Conklin, Jesse R., Verkuil, Yvonne I., Alves, José A., de Fouw, Jimmy, Dekinga, Anne, Hassell, Chris J., Klaassen, Raymond H. G., Kwarteng, Andy Y., Rakhimberdiev, Eldar, Rocha, Afonso, ten Horn, Job, Tibbitts, T. Lee, Tomkovich, Pavel S., Victor, Reginald, and Piersma, Theunis

Subjects
WINTERING of birds, MITOCHONDRIAL DNA, WILDLIFE conservation, BODY size, MIGRATORY animals, FISH spawning
Abstract

Long‐distance migratory species often include multiple breeding populations, with distinct migration routes, wintering areas and annual‐cycle timing. Detailed knowledge on population structure and migratory connectivity provides the basis for studies on the evolution of migration strategies and for species conservation. Currently, five subspecies of Bar‐tailed Godwits Limosa lapponica have been described. However, with two apparently separate breeding and wintering areas, the taxonomic status of the subspecies L. l. taymyrensis remains unclear. Here we compare taymyrensis Bar‐tailed Godwits wintering in the Middle East and West Africa, respectively, with respect to migration behaviour, breeding area, morphology and population genetic differentation in mitochondrial DNA. By tracking 52 individuals from wintering and staging areas over multiple years, we show that Bar‐tailed Godwits wintering in the Middle East bred on the northern West‐Siberian Plain (n = 19), while birds from West Africa bred further east, mostly on the Taimyr Peninsula (n = 12). The two groups differed significantly in body size and shape, and also in the timing of both northward and southward migrations. However, they were not genetically differentiated, indicating that the phenotypic (i.e. geographical, morphological and phenological) differences arose either very recently or without current reproductive isolation. We conclude that the taymyrensis taxon consists of two distinct populations with mostly non‐overlapping flyways, which warrant treatment as separate taxonomic units. We propose to distinguish a more narrowly defined taymyrensis subspecies (i.e. the Bar‐tailed Godwits wintering in West Africa and breeding on Taimyr), from a new subspecies (i.e. the birds wintering in the Middle East and breeding on the northern West‐Siberian Plain). [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

50. Thermogenic side effects to migratory predisposition in shorebirds

Author

Vezina, Francois, Jalvingh, Kirsten M., Dekinga, Anne, and Piersma, Theunis

Subjects
Shore birds -- Physiological aspects, Animal heat -- Analysis, Basal metabolism -- Physiological aspects, Biological sciences
Abstract

In the calidrine sandpiper red knot (Calidris canutus), the weeks preceding takeoff for long-distance migration are characterized by a rapid increase in body mass, largely made up of fat but also including a significant proportion of lean tissue. Before takeoff, the pectoral muscles are known to hypertrophy in preparation for endurance flight without any specific training. Because birds facing cold environments counterbalance heat loss through shivering thermogenesis, and since pectoral muscles represent a large proportion of avian body mass, we asked the question whether muscle hypertrophy in preparation for long-distance endurance flight would induce improvements in thermogenic capacity. We acclimated red knots to different controlled thermal environments: 26[degrees]C, 5[degrees]C, and variable conditions tracking outdoor temperatures. We then studied within-individual variations in body mass, pectoral muscle size (measured by ultrasound), and metabolic parameters [basal metabolic rate (BMR) and summit metabolic rate ([M.sub.sum])] throughout a 3-mo period enclosing the migratory gain and loss of mass. The gain in body mass during the fattening period was associated with increases in pectoral muscle thickness and thermogenic capacity independent of thermal acclimation. Regardless of their thermal treatment, birds showing the largest increases in body mass also exhibited the largest increases in [M.sub.sum.]. We conclude that migratory fattening is accompanied by thermoregulatory side effects. The gain of body mass and muscle hypertrophy improve thermogenic capacity independent of thermal acclimation in this species. Whether this represents an ecological advantage depends on the ambient temperature at the time of fattening. muscle mass; summit metabolic rate; basal metabolic rate; thermogenic capacity; phenotypic flexibility

Published
2007

Catalog

Books, media, physical & digital resources
See catalog results