scholarly journals Comparative Morphology of the Lungs and Skin of two Anura, Pelophylax nigromaculatus and Bufo gargarizans

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gan Guangming ◽  
Yang Zhe ◽  
Zhuang Mei ◽  
Zhang Chenchen ◽  
Ding Jiawei ◽  
...  
Author(s):  
И.В. МАСЛОВА ◽  
И.В. КАРТАВЦЕВА

Осуществлена ревизия видового состава герпетофауны Дальневосточного морского биосферного заповедника. Уточнены локалитеты монгольской жабы Strauchbufo raddei. Приведены аргументы в пользу того, что на о-ве Стенина обитает дальневосточная жаба Bufo gargarizans, а не S. raddei, как считалось ранее. Для подтверждения нахождения последнего вида в окрестностях регионального памятника природы Голубиный утес рекомендовано выполнить дополнительные исследования. Из видового списка заповедника исключена амурская долгохвостка Takydromus amurensis. Приведена новая информация по распространению на юге Приморского края отдельных видов герпетофауны: чернопятнистой лягушки Pelophylax nigromaculatus на о-веФуругельма и большого морского крайта Pseudolaticauda semifasciata в прибрежных водах у пос. Преображение Лазовского района. Составлен обновленный список амфибий и рептилий заповедника с указанием современных таксономических наименований, соответствующих ведущим международным базам данных. Впервые на островах и Дальнем Востоке России кариотипирована B. gargarizans, отловленная на о-ве Стенина. При исследовании хромосомного набора для (2n 22) в ее костном мозге обнаружена высокая инфицированность трипаносомами. The species composition of the herpetofauna of the Far Eastern Marine Biosphere Reserve was revised. The clarification of locality of the Mongolian tode (Strauchbufo raddei) was made. It was argued that the Asiatic tode (Bufo gargarizans) but not S. raddei inhabits the Stenina Island, as previously thought. To confirm the location of the last species in the area of the regional protected natural sanctuary Golubiny Utes, it is recommended to conduct additional research in this area. The Amur grass lizard (Takydromus amurensis) has been excluded from the species list. New information about expansion of certain species of herpetofauna in the South of Primorsky Krai, including the dark-spotted frog (Pelophylax nigromaculatus) in the Furugelm Island and the black-banded sea krait (Pseudolaticauda semifasciata) in the coastal waters of the Preobrazheniye urban-type settlement in Lazovsky District was reported. The updated list of amphibians and reptiles of the Reserve with modern taxonomic names that correspond to leading international databases has been compiled. For the first time, B. gargarizans caught on Stenina Island was karyotyped on the Islands and in the Russian Far East. While studying the chromosomal sets (2n 22) of this species, it was found that bone marrow was highly infected with Trypanosoma.


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.


Author(s):  
C. A. Itatani ◽  
A. Hing ◽  
W. Jackson ◽  
G.J. Marshall

Pneumocystis carinii (PC) is an organism capable of causing fatal pneumonia in immune suppressed individuals and has recently gained prominence because of its association with AIDS. A similar organism occurs in rats and infection may be induced with cortisone injections. In order to isolate PC for further study bronchoal veol ar lavage (BAL) was performed. Differences in the ul trastructure of BAL-obtained organisms and PC in situ were observed and are herein reported.


1993 ◽  
Vol 5 (2) ◽  
pp. 137-146
Author(s):  
Seiichiro INOKUCHI ◽  
Tadanao KIMURA ◽  
Masataka SUZUKI ◽  
Junji ITO ◽  
Hiroo KUMAKURA

2018 ◽  
Vol 27 (3) ◽  
pp. 35-41
Author(s):  
O.O. Yanushevich ◽  
◽  
I.Y. Malyshev ◽  
O.V. Zayratyants ◽  
A.V. Zhuravlyeva ◽  
...  

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