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Inner Mongolia Agricultural University (2019)

Relevant Study on the Environmental Adaptability of Changes of Anatomical Characters of Alxa Gobi Camel and Alxa Desert Camel

王小虎;

Titre : Relevant Study on the Environmental Adaptability of Changes of Anatomical Characters of Alxa Gobi Camel and Alxa Desert Camel

Auteur : 王小虎;

Grade : Master’s Theses 2019

Université : Inner Mongolia Agricultural University

Résumé
In this experiment,Alxa Desert camel and Alxa Gobi camel were selected as the research objects.Their adaptability to environment was studied by comparing their villus characteristics,skeletal structure,hoofs morphological structure and type and content of skeletal muscle fiber.The comparative study of Alxa Bactrian Camel on the length,fineness,breaking strength,electron microscopic observation of the villus and the hair density.The results showed that the villus of camel in Tengger desert was the finest,which was significantly lower than that of Badain Jilin desert camel and Gobi camel,and the villus of Gobi camel was the thickest.Desert camel has the strongest villus intensity,which is significantly higher than that of Gobi camel ;Gobi camel has the longest villus length,which is significantly longer than that of Tengger desert camel,and Tengger desert camel has the shortest villus length ;Gobi camel has the densest fur density,which is significantly higher than that of desert camel,The hair density of their female camels was significantly higher than that of their respective geld camel.The hair density of their thighs was the highest,and the hair density of their sides and shoulders was similar.The fur scales of Gobi camel and desert camel have similar structures under electron microscope.The comparative study on the skeletal structure of Alxa Gobi camel and desert camel.The results showed that there were significant differences in the development of depressions in the attachment of the occipital collateral ligament between them.Desert camel was developed(the depression area was large and deep)while Gobi camel was underdeveloped.There were significant differences in the development of ridges at the anterior and posterior articular concave margins between desert camel and Gobi camel.The ridges of the concave margins of the anterior and posterior joints of desert camels are developed(generally higher and steeper)while the Gobi camels are undeveloped.The development of femoral trochanter of desert camel and Gobi camel is significantly different.Desert camel is developed while Gobi camel is underdeveloped.The limbs of desert camel are shorter and the pelvis is smaller,which is conducive to walking and maintaining balance in the desert.The comparative study on the structural characteristics of the hoofs of Alxa Gobi camels and desert camels.The results showed that the hoofs of desert camels are scaly,and the hoofs of Gobi camels are smooth.The thickness of the epidermis of the forefoot of Gobi camel is significantly thicker than that of desert camel.The structure of hoof tissue sections was basically the same,mainly the thickness of connective tissue was different.The total thickness of dermis and subcutaneous connective tissue of Gobi camel is thicker than that of desert camel.The comparative study on the types of skeletal muscle fibers of Alxa Gobi camel and desert camel.The results showed that the content of MyHC type Ⅱ a muscle fibers of Gobi camel was significantly higher than that of desert camel,and that of MyHC type Ⅱ B muscle fibers of desert camel was significantly higher than that of Gobi camel.In summary,there are differences in villus characteristics,skeletal structure,hoof shape and skeletal muscle fiber content between Alxa Desert camels and Gobi camels.The reasons for these differences may be related to local environmental factors such as geography,climate,vegetation and water resources.These anatomy traits are suitable for their respective Gobi and Desert environments

Mots clés : Alxa Gobi camel and Desert camel; Villus characteristics; Skeletal structure; Hoof shape; Type and content of muscle fibers; Environmental factors;

Présentation (CNKI)

Page publiée le 1er juin 2020