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2023 Volume 2 Issue 2
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YANG Gaoqian. Variation of Population Reproductive Characteristics of Rattus norvegicus in Guizhou Province[J]. PLANT HEALTH AND MEDICINE, 2023, (2): 69-73. doi: 10.13718/j.cnki.zwyx.2023.02.010
Citation: YANG Gaoqian. Variation of Population Reproductive Characteristics of Rattus norvegicus in Guizhou Province[J]. PLANT HEALTH AND MEDICINE, 2023, (2): 69-73. doi: 10.13718/j.cnki.zwyx.2023.02.010
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Variation of Population Reproductive Characteristics of Rattus norvegicus in Guizhou Province

  • Planting Development Service Center of Bozhou District, Zunyi City, Guizhou Province, Zunyi Guizhou 563100, China

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  • Received Date: 11/03/2023

  • MSC: S443

  • It is of great guiding significance to find out the variation law of population reproductive parameters of Rattus norvegicus for prediction of its population trend and control. In this study， the reproductive characteristics of 195 R. norvegicus captured in Bozhou district of Guizhou Province during 2016—2022 were analyzed in different months， seasons， habitats and ages. The results showed that the reproductive parameters of the population were different in different months. The average population sex ratio was 1.07， the average pregnancy rate was 17.82%， the average litter size was 7.22， the average testicular decline rate was 55.32%， and the average reproductive index was 0.67. There were three reproductive peaks in spring， summer and winter. The pregnancy rate， testicular decline rate and reproductive index of different age groups all increased with age. Adult group I and adult group IIwere the main reproductive bodies of the population， and the reproductive ability of R. norvegicus population in rice field and dry farming area was obviously higher than that in residential area. The population fecundity is different in different habitats.
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Variation of Population Reproductive Characteristics of Rattus norvegicus in Guizhou Province

  • Received Date: 11/03/2023

Abstract: It is of great guiding significance to find out the variation law of population reproductive parameters of Rattus norvegicus for prediction of its population trend and control. In this study， the reproductive characteristics of 195 R. norvegicus captured in Bozhou district of Guizhou Province during 2016—2022 were analyzed in different months， seasons， habitats and ages. The results showed that the reproductive parameters of the population were different in different months. The average population sex ratio was 1.07， the average pregnancy rate was 17.82%， the average litter size was 7.22， the average testicular decline rate was 55.32%， and the average reproductive index was 0.67. There were three reproductive peaks in spring， summer and winter. The pregnancy rate， testicular decline rate and reproductive index of different age groups all increased with age. Adult group I and adult group IIwere the main reproductive bodies of the population， and the reproductive ability of R. norvegicus population in rice field and dry farming area was obviously higher than that in residential area. The population fecundity is different in different habitats.

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