The Age Groups Sectionalization of Five-Toed Jerboa (Allactaga sibirica) by Relational Model between Weight and Body Characteristics

doi:10.13859/j.cjz.201806001

Home > Archive>Volume 53, Issue 6, 2018 >833-840. DOI:10.13859/j.cjz.201806001

The Age Groups Sectionalization of Five-Toed Jerboa (Allactaga sibirica) by Relational Model between Weight and Body Characteristics
DOI:
                        10.13859/j.cjz.201806001
                    
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Affiliation:College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center,College of Grasslad and Resources Environment,Inner Mongolia Agricultural University,Key Laboratory of Prataculture and Grassland Resources,Ministry of Education,Inner Mongolia Agricultural University Rodent Research Center
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Abstract:

The sectionalization of rodent age have a far-reaching ecological significance for studying their age structure and population density variation. It is more convenience to identify rodent′s age by their body weight in the field study. Based on the systematic clustering method we weighed the body weight of five-toed jerboa captured in 2012﹣2014 and divided them into three different age groups (age group Ⅰ: 60﹣80 g; Age group Ⅱ: 80﹣110 g; Age group Ⅲ: > 110 g, Table 2). Then we established the relational model between weight and body characteristics, and group the captured ive-toed jerboa as three age groups: groupⅠ: WⅠ =﹣1.032 + 0.137LB + 0.259LT; age group Ⅱ: WⅡ = 0.072 + 0.099LB + 0.060LT + 0.214LP. Here, W is body weight, LB is body length, LT is tail length, Lp back feet length. Our results showed that the body characteristics, such body length, tail length, back feet were not simultaneously growing in their body growths process. One body characteristic may grow at a specific stage, such as the ear length was growing or growing slowly at the age. The body length and the tail length had a strong relationship with weight in the ageⅠ, then slowed down during the age stage Ⅱ. The Bacj feet length was strong related with body weight at age Ⅱ and accelerated growth rate at age Ⅱ. However the body length, tail length and back feed length eigher stopped growing or growing slow down at age Ⅲ.

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YANG Su-Wen,,,,,,,WU Xiao-Dong. 2018. The Age Groups Sectionalization of Five-Toed Jerboa (Allactaga sibirica) by Relational Model between Weight and Body Characteristics. Chinese Journal of Zoology, 53(6): 833-840.

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Received:January 17,2018
Revised:October 19,2018
Adopted:October 12,2018
Online: November 23,2018
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