منابع مشابه
An Overview of Sex Selection at Conception in Mammals
Although the mechanisms under which sex ratio is controlled in nature remain unknown, researchers have attempted to treat sperm in an effort to predetermine the sex of the offspring. The methods of sperm separation that have been repeatedly reported to isolate fractions rich in X- or Y-chromosome bearing sperm are serum albumin gradient swim-up and flow cytometry. However, the ability of the se...
متن کاملThe mammals of Anzali Wetland, in the Southern Caspian Sea
Anzali Wetland as a listed habitat in Montreux Record, was investigated for the mammal fauna during Jan. 2015 - Jan. 2016. About 165 km of water bodies and 200 km around Anzali Wetland were patrolled, respectively. By applying different methods, such as direct observation, different signs recording, using different sampling traps, nets and camera traps, twenty mammal species were identified fro...
متن کاملBiodiversity Conservation of Reptiles and Mammals in the Khorasan Provinces, Northeast of Iran
The reptile and mammals fauna of North-East of Iran were investigated and the contraction and fragmentation of some species due to climatic changes and human activities were analyzed. The sampling was carried out in selected stations throughout the Great Khorsan. The results showed that there are approximately 71 reptiles (including 39 species of lizards, 32 snakes and one turtle) and 83 specie...
متن کاملEthology of Mammals
which tend to capitalize on similarity rather than change. Time ranges of biologic rhythms are explored and an enormous variation is evident ranging from fractions of a second within an individual to millions of years in an evolutionary scale. The influence and interplay of exogenous and endogenous factors in such rhythms are discussed and abnormalities of rhythms are considered to be of fundam...
متن کاملTropisms of Mammals.
We see then that here, just as in the case of diatomic molecules, the permanent moment of the molecules and the part of the dielectric constant due to it are related by Debye's equation derived on the classical theory provided the temperature is sufficiently high. As regards the behavior of the bands emitted by dipole-molecules of the kind considered in an electric field, there should be a line...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1876
ISSN: 0374-5481
DOI: 10.1080/00222937608682034