Eberhard Haase

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A comparison of seasonal changes in the concentrations of androgens in the peripheral blood of wild and domestic ducks.

E Paulke, Eberhard Haase
General and comparative endocrinology
1978

Intense flight and endotoxin injection elicit similar effects on leukocyte distributions but dissimilar effects on plasma-based immunological indices in pigeons.

Kevin D. Matson, Nicholas P. C. Horrocks, B Irene Tieleman, Eberhard Haase
The Journal of experimental biology
2012

Most birds rely on flight for survival. Yet as an energetically taxing and physiologically integrative process, flight has many repercussions. Studying pigeons (Columba livia) and employing… (More)

Effects of flight on blood parameters in homing pigeons

Reingart Bordel, Eberhard Haase
Journal of Comparative Physiology B
2004

The influence of flight and flight duration on 13 blood parameters was studied in homing pigeons which returned after 2–22 h of flight from release sites 113–620 km away. The haematocrit value… (More)

The annual reproductive cycle in mallards.

Eberhard Haase
Journal of steroid biochemistry
1983

In wild mallard drakes plasma FSH and LH levels were elevated at the height of the breeding season in spring, decreased towards the end of the reproductive phase and were low during the time of… (More)

Investigations of the butylcholinesterase-containing cells of the adenohypophysis of the white-crowned sparrow, Zonotrichia leucophrys gambelii

Eberhard Haase, Donald S. Farner
Zeitschrift für Zellforschung und Mikroskopische…
1971

In the adenohypophysis of Zonotrichia leucophrys gambelii two types of cells with butylcholinesterase(BuChE) activity can be demonstrated histochemically. Type I occurs in the cephalic lobe of the… (More)

Effects of seasonal and social factors on testicular activity and hormone levels in domestic pigeons.

Eberhard Haase, E Paulke, Peter J. Sharp
The Journal of experimental zoology
1976

Testicular morphology and plasma concentrations of luteinizing hormone (LH), testosterone, progesterone, and estradiol-17beta were compared in paired (n = 8) and unpaired (n = 7) racing pigeons… (More)

Feather keratin gene polymorphism (F-KER) in domestic pigeons.

Andrzej Dybus, Eberhard Haase
British poultry science
2011

1. A 525-bp fragment of a feather keratin (F-KER) gene was amplified. Four PCR products were sequenced. 2. Two substitutions in the amplified region were observed, one of them in the coding region of… (More)

Allometric comparison of brain weight and brain structure volumes in different breeds of the domestic pigeon, Columba livia f.d. (fantails, homing pigeons, strassers).

Gerd Rehkaemper, Eberhard Haase, Heiko D Frahm
Brain, behavior and evolution
1988

In three breeds of domestic pigeons (fantails, homing pigeons, and strassers) the volumes of fresh, i.e. unfixed tissue of 14 brain structures were determined (telencephalon, diencephalon, nervus… (More)

Influences of sex, castration, and androgens on the eumelanin and pheomelanin contents of different feathers in wild mallards.

Eberhard Haase, Shosuke Ito, Kazumasa Wakamatsu
Pigment cell research
1995

In mallards the bright nuptial plumage of the drake represents the neutral, sex hormone-independent coloration of the species that both sexes eventually exhibit after castration. We compared the… (More)

Influence of flight on protein catabolism, especially myofilament breakdown, in homing pigeons

Reingart Bordel, Eberhard Haase
Journal of Comparative Physiology B
2000

In order to study protein degradation during flight in homing, a high-performance liquid chromatography technique was developed for the quantitative analysis of Nτ-methylhistidine. Secondly, it was… (More)

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