A density estimation model of plateau pika (<i>Ochotona curzoniae</i>) supporting camera‐monitoring programs

Jia, Yinghui; Qiu, Jun; Ma, Cang; Wang, Jinzhao; Wang, Guangqian; Li, Fangfang

doi:10.1002/ece3.7865

Cited by 1 publication

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“…Plateau pikas ( Ochotona curzoniae ) (Figure 1) are small herbivorous mammals, endemic to the Qinghai–Tibetan Plateau (Dobson et al, 2000; Smith et al, 1986; Smith & Wang, 1991; Yin et al, 2009). The roles played by plateau pikas in grassland degradation and protection are controversial (Jia et al, 2021). Plateau pikas have ever been considered a pest species on the Tibetan Plateau because they compete with livestock (yak, sheep, horses) for forage and their burrowing could contribute to soil erosion (Ekvall, 1968; Fan et al, 1999; Pech et al, 2007; Schaller, 1985; Wang et al, 1995), whereas Guo et al (2012) supported the idea that plateau pika is a key component of alpine meadow ecosystem in the Qinghai–Tibet Plateau, and Smith and Foggin (1999), Lai and Smith (2003) held that plateau pika is a keystone species of biodiversity on the Qinghai–Tibetan Plateau.…”

Section: Introductionmentioning

confidence: 99%

Life‐history traits and fitness of plateau pika (Ochotona curzoniae) in alpine meadow ecosystem

Nie

Liu

Chen

2022

Ecology and Evolution

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Plateau pika (Ochotona curzoniae) is an endemic mammal living in the alpine meadow ecosystem in Qinghai–Tibet Plateau. We studied life history of plateau pika by mark–recapturing method. The research results showed that fitness of plateau pika to its habitat was lower than those of many other mammal species; plateau pika adopted quick growth strategy; the life‐history features of plateau pika were accorded with Charnov (Evolutionary Ecology Research, 2002, 4, 749)'s formula about life‐history classification, that is, E/α ≈ 1.35, C·E ≈ 1.7, I/m ≈ 0.3, in which E stands for average adult life span; α stands for age at first reproduction; C is reproductive effort; I is the size of an offspring at independence from the parent; m is average adult body mass. There does not exist dimorphism in plateau pikas. The configurations of females and males are similar; the average body mass of males is a little heavier than that of females, but the difference is not significant (F = 1.0854, df = 154, p > .3058). The juveniles exhibit a J‐form growth curve before 30‐day age and grow slower between 30 and 65‐day age and reach body mass equilibrium at about 65 days old. So, 65 days is the maturity age of plateau pika. There are 3 mortality peaks in plateau pika population. The first time is in neonate period, when only one half of juveniles can pass through this period, which implies that juvenile period is influenced strongly by natural selection; the second time is in fecundity peak period, which reflects the cost of reproduction; the third time is in the old age of plateau pika, a significant loss occurs during this period, which is the result of natural selection. The average longevity of females is longer than that of males. A female reaches the maximum life span recorded, that is, 931 days. The average longevity of all individuals is 16.33 months ≈ 490 days. The survival rate of females is higher than that of males, which reflects the cost of reproduction and society role of males. It is the outcome of natural selection. The sex ratio of neonates is 1:1; however, the sex ratio of adults is female: male = 1.31:1, which is caused by higher mortality of males over females in life history. Plateau pikas reproduced two times every year. The average gestation period of females is 18–20 days. The average litter size is 4.57 individual. The average body mass of neonates is 9.28 g. The average litter size of adult female plateau pika does not variate with age. Breeding season is between April and June. The reproductive value and fertility of 15–18 months age females are highest. The reproductive value and fertility increased with age before reproductive value and fertility peak age; however, the reproductive value and fertility decreased with age after peak age. The fitness of plateau pika (r = .1125) was lower than that of American pikas (O. princeps) (r = 2.172). The survival rate was the main factor influencing fitness. The dynamic trend of plateau pika population was coincident with r, that is, the plateau pika population...

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Section: Introductionmentioning

confidence: 99%

Life‐history traits and fitness of plateau pika (Ochotona curzoniae) in alpine meadow ecosystem

Nie

Liu

Chen

2022

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

A density estimation model of plateau pika (Ochotona curzoniae) supporting camera‐monitoring programs

Abstract: Fang-Fang Li 1This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 1 publication

References 59 publications

Life‐history traits and fitness of plateau pika (Ochotona curzoniae) in alpine meadow ecosystem

Life‐history traits and fitness of plateau pika (Ochotona curzoniae) in alpine meadow ecosystem

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