Isotopic niche partitioning in two sympatric howler monkey species

Flores-Escobar, Elizabeth; Sanpera, Carola; Jover, Lluís; Cortés‐Ortiz, Liliana; Rangel‐Negrín, Ariadna; Canales‐Espinosa, Domingo; Dias, Pedro Américo D.

doi:10.1002/ajpa.24028

Cited by 3 publications

(3 citation statements)

References 69 publications

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“…In this study, there was a difference in the percentages of food consumed. This feeding strategy has also been reported in other coexisting animals, in mantled and black howler monkeys in allopatry, their isotopic niches are similar, but the niches of sympatric populations are separated [15]. A study of two giant petrels (Macronectes spp.)…”

Section: Discussionsupporting

confidence: 65%

“…Differentiation in at least one dimension is needed to achieve stable co-existence, such as temporal or trophic niche differentiation [11][12][13][14]. Sympatric species may achieve trophic niche separation by foraging for different foods, at different places, or at different times [15]. As one of the important dimensions of niche theory, the study of trophic niches is very important for understanding the coexistence mechanisms and ecology of closely related species to improve conservation strategies [16].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, isotopic niches can be calculated based on different elements. δ 13 C changes little in the process of food chain transmission and is often used to represent food sources and habitat, while δ 15 N is highly enriched between trophic levels and is commonly used to evaluate the trophic level of the consumer; the combination of δ 13 C and δ 15 N can be used to analyze consumers' consumption of food resources [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Trophic Niche Differentiation in Two Sympatric Nuthatch Species (Sitta yunnanensis and Sitta nagaensis)

Guo,

Lu,

Xie

et al. 2024

Animals

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Sympatric closely related species may experience interspecific trophic competition due to ecological similarity; they may isolate in terms of diet or habitat use as a strategy to avoid competition. The body tissues of consumers contain stable isotope signatures information that can be applied to infer their dietary information. In this study, δ13C and δ15N stable isotopes were analyzed to determine the dietary information and trophic niches of sympatric coexisting Sitta yunnanensis and Sitta nagaensis. The results showed that the food sources of S. yunnanensis and S. nagaensis were from six orders, including Orthoptera, and the cumulative contribution rate was 99.97%, with the two species eating similar diets but at different rates. The larger δ13C of S. yunnanensis indicates that it had a wider range of habitats for feeding, while the difference in δ15N values was not significant (p > 0.05), indicating that both species feed on similar nutrient levels. As determined by Bayesian ellipses, the isotopic niches of S. yunnanensis and S. nagaensis were differentiated; the isotopic niche width of S. yunnanensis is 2.69‰2, which was larger than that of S. nagaensis (0.73‰2), indicates that differentiation between the two species in diet or habitat use reduced competition. Trophic niche differentiation and differences in foraging proportions may be the principal resource allocation mechanisms behind S. yunnanensis and S. nagaensis coexistence.

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Trophic Niche Differentiation in Two Sympatric Nuthatch Species (Sitta yunnanensis and Sitta nagaensis)

Guo,

Lu,

Xie

et al. 2024

Animals

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Stable Isotopes Analysis of Black Lion Tamarins Reveals Increasing Arthropod Consumption When Fruit Productivity Decreases in Forest Fragments

Raskin,

Kaisin,

Michel

et al. 2024

American J Primatol

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Given the cryptic and elusive nature of prey consumption, quantifying its contribution to the diet of free‐ranging primates using behavioral methods is challenging. In this context, the use of carbon and nitrogen‐stable isotopes represents a promising alternative approach. Here, we used stable isotope analysis to estimate the proportion of arthropods and fruits in the diet of black lion tamarins (Leontopithecus chrysopygus), an endangered primate endemic to the Brazilian Atlantic Forest. To do so, we ran stable isotope mixing models using isotopic data from hair samples of black lion tamarins living in six forest fragments showing different levels of habitat quality. Furthermore, we ran linear mixed models to assess the influence of habitat quality—fruit productivity (estimated by tree total basal area) and arthropod biomass – and individual characteristics (sex and body mass) on tamarins' δ15N values (a proxy for trophic position). Our results revealed that arthropods contributed more to black lion tamarins' diet than reported in previous behavioral studies, suggesting that behavioral observations may considerably underestimate the importance of arthropodivory in the diet of arboreal primates. The degree of arthropodivory and frugivory was similar within groups, in line with the strong group cohesion and synchronization of feeding behaviors of this species and supporting the role of site‐specific habitat characteristics on dietary choice. Arthropod consumption was higher in areas with lower fruit productivity and did not increase when arthropod biomass increased, suggesting that fruits represent a limiting but preferred resource for this species. These results demonstrate the dietary plasticity of black lion tamarins in areas of lower forest quality, where they manage to compensate low fruit productivity by shifting to a diet richer in arthropods. Considering that this species occurs within a highly fragmented landscape, preserving and protecting small forest patches remains crucial for the conservation of this species.

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Carbon and nitrogen stable isotopic offsets between diet and hair/feces in captive orangutans

et al. 2021

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Isotopic niche partitioning in two sympatric howler monkey species

Abstract: This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

Cited by 3 publications

References 69 publications

Trophic Niche Differentiation in Two Sympatric Nuthatch Species (Sitta yunnanensis and Sitta nagaensis)

Trophic Niche Differentiation in Two Sympatric Nuthatch Species (Sitta yunnanensis and Sitta nagaensis)

Stable Isotopes Analysis of Black Lion Tamarins Reveals Increasing Arthropod Consumption When Fruit Productivity Decreases in Forest Fragments

Carbon and nitrogen stable isotopic offsets between diet and hair/feces in captive orangutans

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