scholarly journals Contrasting response of haematological variables between long-term training and short exercise bouts in zebra finches (Taeniopygia guttata)

2019 ◽  
Vol 222 (4) ◽  
pp. jeb193227 ◽  
Author(s):  
Agata Bury ◽  
Jowita Niedojadlo ◽  
Edyta T. Sadowska ◽  
Ulf Bauchinger ◽  
Mariusz Cichoń
Keyword(s):  
Taeniopygia Guttata ◽  
Zebra Finches

scholarly journals The Cell Birth Marker BrdU Does Not Affect Recruitment of Subsequent Cell Divisions in the Adult Avian Brain

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Anat Cattan ◽  
Amir Ayali ◽  
Anat Barnea
Keyword(s):  
Taeniopygia Guttata ◽  
Zebra Finches ◽  
Avian Brain ◽  
Long Term Effects ◽  
Neuronal Nucleus ◽  
Cell Divisions ◽  
Neuronal Recruitment ◽  
The Brain ◽  
Silver Grains

BrdU is commonly used to quantify neurogenesis but also causes mutation and has mitogenic, transcriptional, and translational effects. In mammalian studies, attention had been given to its dosage, but in birds such examination was not conducted. Our previous study suggested that BrdU might affect subsequent cell divisions and neuronal recruitment in the brain. Furthermore, this effect seemed to increase with time from treatment. Accordingly, we examined whether BrdU might alter neurogenesis in the adult avian brain. We compared recruitment of [3H]-thymidine+neurons in brains of zebra finches (Taeniopygia guttata) when no BrdU was involved and when BrdU was given 1 or 3 months prior to [3H]-thymidine. In nidopallium caudale, HVC, and hippocampus, no differences were found between groups in densities and percentages of [3H]-thymidine+neurons. The number of silver grains per [3H]-thymidine+neuronal nucleus and their distribution were similar across groups. Additionally, time did not affect the results. The results indicate that the commonly used dosage of BrdU in birds has no long-term effects on subsequent cell divisions and neuronal recruitment. This conclusion is also important in neuronal replacement experiments, where BrdU and another cell birth marker are given, with relatively long intervals between them.

scholarly journals Monogamy on the fast track

2007 ◽  
Vol 3 (6) ◽  
pp. 617-619 ◽  
Author(s):  
Elizabeth Adkins-Regan ◽  
Michelle Tomaszycki
Keyword(s):  
Fast Track ◽  
Experimental Tests ◽  
Experimental Manipulation ◽  
Taeniopygia Guttata ◽  
Zebra Finches ◽  
Social Monogamy

Social monogamy has evolved multiple times and is particularly common in birds. It is not well understood why some of these species are continuously and permanently paired while others occasionally ‘divorce’ (switch partners). Although several hypotheses have been considered, experimental tests are uncommon. Estrildid finches are thought to be permanently paired because being short-lived opportunistic breeders, they cannot afford the time to form a new pair relationship. Here it is shown through a controlled experimental manipulation that zebra finches ( Taeniopygia guttata ) allowed to remain with their partners to breed again are faster to initiate a clutch (by approx. 3 days) than birds separated from their mates that have to re-pair, supporting the hypothesis that continuous pairing speeds up initiation of reproduction, a benefit of long-term monogamy in a small, short-lived, gregarious species.

Zebra Finches (Taeniopygia guttata )

2018 ◽  
pp. 318-337
Author(s):  
Graham Law ◽  
Rudolf Nager ◽  
Michael Wilkinson
Keyword(s):  
Taeniopygia Guttata ◽  
Zebra Finches
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