Sex-specific differences in offspring personalities across the laying order in magpies Pica pica

2014 ◽  
Vol 107 ◽  
pp. 79-87 ◽  
Author(s):  
Kaisa Rokka ◽  
Marjo Pihlaja ◽  
Heli Siitari ◽  
Carl D. Soulsbury
Keyword(s):  
2014 ◽  
Author(s):  
John Magnotti ◽  
Jeffrey Katz ◽  
Anthony Wright ◽  
Debbie Kelly

1974 ◽  
Vol 29 (5-6) ◽  
pp. 239-242 ◽  
Author(s):  
Jens Poltz ◽  
Jürgen Jacob

The uropygial gland fats from four species of the family Corvidae are found to be mainly mono­ ester waxes, which consist of mono-, di-, and trimethyl substituted fatty acids and n- and methyl-branched alcohols. The positions of all methyl brandlings are even-numbered, the 2-position is preferred. About 2 - 40% of the secretions consist of triester waxes: Alkyl-hydroxy-malonic acids esterified with n-fatty acids and n-alcohols. Waxes of this type are very common in the uropygial gland fats of birds and therefore, in opposite to the monoester waxes, they are not usable for a chemotaxo­ nomy of birds.


2010 ◽  
Vol 19 (5) ◽  
pp. 420-424
Author(s):  
Kenta Aso ◽  
Yoshitaka Kubo ◽  
Shunsuke Kakino ◽  
Hiroshi Kashimura ◽  
Atsushi Sugawara ◽  
...  

2005 ◽  
Vol 41 (3) ◽  
pp. 618-623 ◽  
Author(s):  
Y-K. Kwon ◽  
S-J. Joh ◽  
M-C. Kim ◽  
Y-J. Lee ◽  
J-G. Choi ◽  
...  

2019 ◽  
Vol 16 (2) ◽  
pp. 0281
Author(s):  
AL –Nakeeb Et al.

          A histological study showed the wall of the stomach in Pica pica and Herpestes javanicus consists of four layers: mucosa, submucosa, muscularis externa and serosa. Also, the present study showed many  differences in the histological structures of the stomach for each in both types. The stomach of P. pica consists of two portions: the proventiculus and gizzard, while the stomach of H. javanicus consists of three portions: cardiac, fundic and pyloric regions. The mucosa layer formed short gastric folds, named plicae. In the proventiculus of P. pica, sulcus is found between each two plicae, but the folds called gastric pits in the gizzard, which are full with koilin. Lamina properia in both types contained gastric glands (straight simple tubular glands) named superficial glands, as well as another gastric gland found in the submucosa layer of the proventiculus in P. pica only named deep gastric glands. The gastric gland in the stomach of H. javanicus contained: mucous neck cells and parietal cells positive to AB/PAS stains in cardiac portion, as well as chief cells in fundic portion, but pyloric portion had just mucous neck cells. Muscularis externa in both types formed two muscle layers: inner and outer layer.


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