Seed predation and passage time through the digestive tract of captive golden snub-nosed monkeys (Rhinopithecus roxellana)

Bai, Yanpei; Chen, Yuan; Chen, Haochun; Yao, Hui; Yang, Weng Lang; Xue-yu, Ruan; Xiang, Zuofu

doi:10.1016/j.gecco.2019.e00652

Cited by 5 publications

(12 citation statements)

References 30 publications

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“…orbiculatus seeds (small seeds) passed through the monkeys’ gut intact (Bai et al . 2019). A similar result was found in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Seeds of small size from multi‐seeded fruits are more likely to be successfully dispersed by endozoochory (Corlett 2017; Bai et al . 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Within 10 h of collection, the fecal samples were rinsed through a sieve (mesh diameter = 0.6 mm) to separate out the seeds (Bai et al . 2019). We used a stereomicroscope to extract and count the intact, mildly damaged, and severely damaged seeds in each fecal sample.…”

Section: Methodsmentioning

confidence: 99%

“…2018), 70.1% of seeds ingested by captive golden snub‐nosed monkeys were destroyed, potentially, as a consequence of very long gut retention time (mean GRT = 36 h; Bai et al . 2019) and mastication of the seed during ingestion. Endozoochorous seed dispersal by wild golden snub‐nosed monkeys has yet to be explored and the effect of ingestion of seeds on germination success is unknown as they often feed on seeds and fruits during summer and autumn.…”

Section: Introductionmentioning

confidence: 99%

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Endozoochorous seed dispersal by golden snub‐nosed monkeys in a temperate forest

et al. 2020

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Seed dispersal is essential for plant recruitment and the maintenance of biodiversity. Colobine monkeys are primarily folivorous, but they also consume fruits and are often assumed to be seed predators. Although they are known to be epizoochorous seed dispersers, their role as endozoochorous seed dispersers needs reassessment. We examined potential endozoochory in golden snub‐nosed monkeys (Rhinopithecus roxellana) at Dalongtan in Shennongjia National Park, central China, by assessing potential germination of ingested seeds (n = 1806, 9 species) from fecal samples. Intact seeds were in almost all fecal samples (ranging from 5–130 seeds), and ingested seeds were from small seeded species (seed width <4.5 mm). The 2 most abundant species were Actinidia arguta (73%) and Rosa caudata (15%). The fruits of A. arguta were unripe when ingested (i.e. effective seed predation) and the ingested seeds did not germinate in the trials. Therefore, ingestion of unripe seeds does not lead to effective seed dispersal. However, germination rates of defecated R. caudata (9%) were greater than control seeds (6% and 0%), demonstrating potential endozoochorous seed dispersal. Thus, colobine monkeys do indeed disperse mainly small‐seeded from multi‐seeded fruits through potential endozoochory and this process enhances the recruitment of seedlings.

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“…orbiculatus seeds (small seeds) passed through the monkeys’ gut intact (Bai et al . 2019). A similar result was found in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Seeds of small size from multi‐seeded fruits are more likely to be successfully dispersed by endozoochory (Corlett 2017; Bai et al . 2019).…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Endozoochorous seed dispersal by golden snub‐nosed monkeys in a temperate forest

et al. 2020

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“…Gut passage time has been widely studied in primates [Cabre-Vert and Feistner, 1995;Lambert, 1998;Norconk et al, 2002;Remis and Dierenfeld, 2004;Tsuji et al, 2015;Bai et al, 2019] and can vary considerably [Lambert, 1998]. It is thought that both body size and digestive strategy can explain the large variation observed in primates [Lambert, 1998;Clauss et al, 2008;Blaine and Lambert, 2012].…”

Section: Introductionmentioning

confidence: 99%

Adapting Methodology Used on Captive Subjects for Estimating Gut Passage Time in Wild Monkeys

Stringer¹,

Hill²,

Swanepoel³

et al. 2020

IJFP

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Gut passage time of food has consequences for primate digestive strategies, which subsequently affect seed dispersal. Seed dispersal models are critical in understanding plant population and community dynamics through estimation of seed dispersal distances, combining movement data with gut passage times. Thus, developing methods to collect in situ data on gut passage time are of great importance. Here we present a first attempt to develop an in situ study of gut passage time in an arboreal forest guenon, the samango monkey (Cercopithecus albogularis schwarzi) in the Soutpansberg Mountains, South Africa. Cercopithecus spp. consume large proportions of fruit and are important seed dispersers. However, previous studies on gut passage times have been conducted only on captive Cercopithecusspp. subjects, where movement is restricted, and diets are generally dissimilar to those observed in the wild. Using artificial digestive markers, we targeted provisioning of a male and a female samango monkey 4 times over 3 and 4 days, respectively. We followed the focal subjects from dawn until dusk following each feeding event, collecting faecal samples and recording the date and time of deposition and the number of markers found in each faecal sample. We recovered 6.61 ± 4 and 13 ± 9% of markers from the male and the female, respectively, and were able to estimate a gut passage window of 16.63–25.12 h from 3 of the 8 trials. We discuss methodological issues to help future researchers to develop in situ studies on gut passage times.

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Detection of prey DNA in bat feces: Effects of time since feeding, meal size, and prey identity

et al. 2021

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Seed predation and passage time through the digestive tract of captive golden snub-nosed monkeys (Rhinopithecus roxellana)

Cited by 5 publications

References 30 publications

Endozoochorous seed dispersal by golden snub‐nosed monkeys in a temperate forest

Endozoochorous seed dispersal by golden snub‐nosed monkeys in a temperate forest

Adapting Methodology Used on Captive Subjects for Estimating Gut Passage Time in Wild Monkeys

Detection of prey DNA in bat feces: Effects of time since feeding, meal size, and prey identity

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