Diet of tropical insectivorous birds in lowland Malaysian rainforest

Mansor, Mashhor; Abdullah, Nurul Ashikin; Halim, Madihah; Nor, Shukor Md.; Ramli, Rosli

doi:10.1080/00222933.2018.1534015

Cited by 9 publications

(13 citation statements)

References 75 publications

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“…Food availability may affect the oxidative status, for example, increasing levels of oxidative damage when antioxidants occur in limited supply in food (van de Crommenacker, Komdeur, Burke, & Richardson, 2011; Giordano, Costantini, Pick, & Tschirren, 2015). Elevated trophic flexibility of our study species in selectively logged forest compared to unlogged (Corlett, 2017; Edwards et al., 2013; Hamer et al., 2015; Mansor, Abdullah, Halim, Nor, & Ramli, 2018), and a large abundance of invertebrates in both old‐growth and naturally regenerating selectively logged forests (Edwards, Backhouse, Wheeler, Khen, & Hamer, 2012), might determine similar foraging efforts of birds in both forest types. We do not know, however, if damages to proteins or nucleic acids are similar between unlogged and selectively logged forests.…”

Section: Discussionmentioning

confidence: 89%

Impacts of selective logging on the oxidative status of tropical understorey birds

Messina

Edwards

AbdElgawad

et al. 2020

Journal of Animal Ecology

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1. Selective logging is the dominant form of human disturbance in tropical forests, driving changes in the abundance of vertebrate and invertebrate populations relative to undisturbed old-growth forests. 2. A key unresolved question is understanding which physiological mechanisms underlie different responses of species and functional groups to selective logging. Regulation of oxidative status is thought to be one major physiological mechanism underlying the capability of species to cope with environmental changes. 3. Using a correlational cross-sectional approach, we compared a number of oxidative status markers among 15 understorey bird species in unlogged and selectively logged forest in Borneo in relation to their feeding guild. We then tested how variation of markers between forest types was associated with that in population abundance. 4. Birds living in logged forests had a higher activity of the antioxidant enzyme superoxide dismutase and a different regulation of the glutathione cycle compared to conspecific birds in unlogged forest. However, neither oxidative damage nor oxidized glutathione differed between forest types. We also found that omnivores and insectivores differed significantly in all markers related to the key cellular antioxidant glutathione irrespective of the forest type. Species with higher levels of certain antioxidant markers in a given type of forest were less abundant in that forest type compared to the other. 5. Our results suggest that there was little long-term effect of logging (last logging rotation occurred ~15 years prior to the study) on the oxidative status of understorey bird species. However, it is unclear if this was owing to plasticity or evolutionary change. Our correlative results also point to a potential negative association between some antioxidants and population abundance irrespective of the forest type.

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Section: Discussionmentioning

confidence: 89%

Impacts of selective logging on the oxidative status of tropical understorey birds

Messina

Edwards

AbdElgawad

et al. 2020

Journal of Animal Ecology

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“…Insectivorous birds play an important role in regulating trophic flows ( Schmitz et al 2010 ) as well as reducing the levels of pest and herbivorous insects ( Karp and Daily 2014 ; King et al 2015 ) and forest defoliation ( Eveleigh et al 2007 ). Babblers are believed to typically feed on a variable range of arthropod taxa ( Wells 2007 ), however some prey selectivity has been reported ( Mansor et al 2018 ). Because of their small size and habits of foraging in dense vegetation cover, it can be challenging to observe and detect their prey selection in the field.…”

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confidence: 99%

High-throughput sequencing reveals dietary segregation in Malaysian babblers

et al. 2021

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The coexistence of numerous species within a community results from how those species use available resources. Babblers are one of the major groups of Malaysian insectivorous birds, which frequently forage in dense vegetation cover and have a high level of sympatry. Therefore, examining the diet, prey selection and niche segregation of babblers can be challenging. In this study, we used high-throughput sequencing to investigate potential dietary overlap or segregation among 10 babbler species of the four genera of the family Pellorneidae and Timaliidae: Pellorneum, Malacopteron, Stachyris and Cyanoderma in central peninsular Malaysia. We tested the hypothesis that trophically similar species may differ in resource use to avoid competitive exclusion. We identified 81 distinct arthropod taxa from fecal samples, belonging to 71 families representing 13 orders, which were predominantly from 16 dipteran, 13 lepidopteran and 10 coleopteran families. Of all the prey taxa consumed, 45% were found to be distinct across the 10 babbler species, and less than 35% were shared simultaneously by three or more babbler species, indicating minimal dietary overlap. The black-throated babbler Stachyris nigricollis and moustached babbler Malacopteron magnirostre had the most generalist tendencies because they consumed a greater variety of prey taxa. Small dietary overlap values (Ojk) and a relatively wide range of food resources suggest that dietary segregation occurred among the studied babblers. The great diversity of prey consumed revealed the presence of dietary flexibility among the sympatric insectivorous birds, thus reducing any active dietary competition and facilitating the coexistence through niche partitioning.

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“…In conclusion, service wires favored by the roosting swallows should be considered and maintained in Bentong town management planning or any other towns occupied by swallows. In addition, we suggest that future research should extend this study by identifying the stopping-over sites along East Asian-Australasian Flyway as well as aerial insects consumed by this migrant species in wintering regions (Mansor et al 2018b…”

Section: Resultsmentioning

confidence: 97%

Short Communication: Roosting behavior of Wintering Barn Swallow (Hirundo rustica) in Peninsular Malaysia

et al. 2020

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Abstract. Ismail NA, Jufri ABAK, Daud UNS, Nor SM, Mansor MS. 2020. Short Communication: Roosting behavior of Wintering Barn Swallow (Hirundo rustica) in Peninsular Malaysia. Biodiversitas 21: 661-665. The East Asian Barn Swallow Hirundo rustica gutturalis primarily breeds in China, Japan, and Korea, typically migrates to Southeast Asia during winter, including Malaysia. To date, knowledge regarding population of Barn Swallow are limited to their breeding grounds and other subspecies (e.g., European Barn Swallow Hirundo rustica rustica). A previous study on Barn Swallow wintering in Malaysia was conducted approximately 50 years ago and mainly focused on population dynamics. The objective of the present study was to investigate the roosting behavior of wintering Barn Swallows in a major roosting site, Bentong, central Peninsular Malaysia, from October 2018 to March 2019. Scan sampling at 5-min intervals was used to examine the roosting behavior of the swallows perching on service wires (i.e., electricity and telephone wires). We found that the swallows began to roost an average of 10 minutes after sunset and slept 55 minutes later. However, cloudy and rainy weather significantly affects swallow roosting period, leading them to perch earlier, 5 minutes before sunset. The pattern of roosting behavior was somewhat similar throughout the migration season, except in the early migration season (October), which was likely inconsistent due to their early adaptation to the town environment. Behavioral scan sampling revealed that swallows spend most of the time motionless, followed by preening. However, anthropogenic disturbances disrupt their behavior and sleep time. We also noted that this communally roosting bird behaved gregariously on wires, particularly at sites illuminated by light, which is likely an anti-predator mechanism.

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Diet of tropical insectivorous birds in lowland Malaysian rainforest

Cited by 9 publications

References 75 publications

Impacts of selective logging on the oxidative status of tropical understorey birds

Impacts of selective logging on the oxidative status of tropical understorey birds

High-throughput sequencing reveals dietary segregation in Malaysian babblers

Short Communication: Roosting behavior of Wintering Barn Swallow (Hirundo rustica) in Peninsular Malaysia

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