Population demography of Northern muriquis (Brachyteles hypoxanthus) at the Estação Biológica de Caratinga/Reserva particular do Patrimônio Natural-Felìciano Miguel Abdala, Minas Gerais, Brazil.
Population demography of Northern muriquis (Brachyteles hypoxanthus) at the Estação Biológica de Caratinga/Reserva particular do Patrimônio Natural-Felìciano Miguel Abdala, Minas Gerais, Brazil.
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巴西米纳斯吉拉斯州 Estação Biológica de Caratinga/Reservaspecial do Patrimônio Natural-Felìciano Miguel Abdala 的北鼠（Brachyteleshyxanthus）人口统计。
DOI：
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发表时间：
2006
影响因子：
2.8
通讯作者：
S. L. Mendes
中科院分区：
文献类型：
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作者：
K. Strier;J. Boubli;Carla B. Possamai;S. L. Mendes
位于巴西米纳斯吉拉斯的Estação Biológica de Caratinga/Reserva Particular do Patrimônio Natural-Feliciano Miguel Abdala的957公顷森林，供养着已知数量最多的极度濒危北方muriqui（Brachyteles hypoxanthus）。我们结合联合收割机的长期数据，从1982年以来一直监测的其他三个组自2002年和2003年以来获得的新数据来描述这一人口的人口结构，评估其未来增长的潜力，并预测如何分散和竞争机制可能会改变，以应对当前的人口状况。截至2005年1月，226人被分为四个37-77人的混合性别群体和一个全男性单位，其中八名男性与两个混合性别群体保持短暂联系。虽然51.77%的种群是女性，成年和亚成年的性别比是女性偏向（0.75），而在未成年人的性别比是男性偏向（1.47）。2003年和2004年，64.18%的成年女性生育，与平均生育间隔期的预期一致。然而，到2005年1月，由于婴儿死亡率异常高，只有52.31%的成年女性仍然怀有24个月以下的婴儿。2003年出生的25名婴儿的第一年存活率仅为76%，大大低于以前记录的研究时间最长的一组。女性生殖力高表明人口健康，但目前出生时偏向男性将导致人口增长率在20年内下降，并可能增加男性生殖竞争的水平，改变扩散模式。
The 957-ha forest at the Estação Biológica de Caratinga/Reserva Particular do Patrimônio Natural-Felìciano Miguel Abdala, in Minas Gerais, Brazil, supports one of the largest known populations of the critically endangered northern muriqui (Brachyteles hypoxanthus). We combine long-term data on one group that has been monitored since 1982 with new data obtained on the other three groups since 2002 and 2003 to describe the demographic structure of this population, evaluate its potential for future growth, and predict how dispersal and competitive regimes may change in response to current demographic conditions. As of January 2005, the 226 individuals in the population were divided into four mixed-sex groups with 37-77 members, and an all-male unit whose eight males maintained transient associations with two of the mixed-sex groups. Although 51.77% of the population was female, the sex ratio among adults and subadults was female-biased (0.75), while that among immatures was male-biased (1.47). Consistent with expectations from mean interbirth intervals, 64.18% of adult females gave birth in 2003 and 2004. However, by January 2005, only 52.31% of adult females were still carrying infants <24 months of age due to unusually high infant mortality. First-year survivorship among the 25 infants born in the population in 2003 was only 76%, considerably lower than previously documented in the longest-studied group. High female fecundity is indicative of a healthy population, but the current male bias in births will result in a decline in the population growth rate within two decades, and may increase levels of male reproductive competition and alter dispersal patterns.
影响因子：
56.9
作者：
MUELLER, LD;GUO, PZ;AYALA, FJ
通讯作者：
AYALA, FJ