Comparative Morphology and Morphometry of the Olfactory Organ in the Five Korean Torrent Catfishes, Genus Liobagrus, with a Taxonomic View

2020 ◽  
Vol 37 (6) ◽  
Author(s):  
Hyun Tae Kim ◽  
Jong Young Park
2013 ◽  
Vol 252 (4) ◽  
pp. 424-430 ◽  
Author(s):  
Michał Kuciel ◽  
Krystyna Żuwała ◽  
Ukkrit Satapoomin

1991 ◽  
Vol 191 (4) ◽  
pp. 401-407 ◽  
Author(s):  
P. J. Haley ◽  
B. A. Muggenburg ◽  
D. N. Weissman ◽  
D. E. Bice

2013 ◽  
Vol 12 (5) ◽  
pp. 846-852 ◽  
Author(s):  
Jing-jing LI ◽  
Qing-bo TANG ◽  
Run-e BAI ◽  
Xiao-min LI ◽  
Jin-wei JIANG ◽  
...  

2014 ◽  
Vol 23 (3) ◽  
pp. 291-300 ◽  
Author(s):  
Nicole Brand Ederli ◽  
Francisco Carlos Rodrigues de Oliveira

One of the most common problems in breeding of ostriches in captivity is the control of parasitic diseases. This work presents keys for the identification of adult nematodes and infective larvae by morphologic and morphometric characteristics. These keys will allow the scientific community to identify the species that infect the ostriches either based on the characteristics of the posterior end of the infective larvae found through a simple fecal exam or by observing the morphology and morphometry of adult worms recovered during necropsies. These keys will facilitate ecological and systematic studies, as well as increase the understanding of the epidemiology of these parasitosis in ostriches.


Author(s):  
J. R. Ruby ◽  
R. F. Dyer ◽  
R. G. Skalko ◽  
R. F. Gasser ◽  
E. P. Volpe

An electron microscope examination of fetal ovaries has revealed that developing germ cells are connected by intercellular bridges. In this investigation several species have been studied including human, mouse, chicken, and tadpole (Rana pipiens). These studies demonstrate that intercellular connections are similar in morphology regardless of the species.Basically, all bridges are characterized by a band of electron-dense material on the cytoplasmic side of the tri-laminar membrane surrounding the connection (Fig.l). This membrane is continuous with the plasma membrane of the conjoined cells. The dense material, however, never extends beyond the limits of the bridge. Variations in the configuration of intercellular connections were noted in all ovaries studied. However, the bridges in each individual species usually exhibits one structural characteristic seldom found in the others. For example, bridges in the human ovary very often have large blebs projecting from the lateral borders whereas the sides of the connections in the mouse gonad merely demonstrate a slight convexity.


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