Nest predation in Patagonian wetlands: predator assemblage and microhabitat characteristics

Vázquez, M. Soledad; Amico, Guillermo C.

doi:10.1080/01584197.2022.2153700

Cited by 3 publications

(5 citation statements)

References 62 publications

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“…The four tropical deer species we recorded are herbivores (Haleem & Ilyas, 2022; Ilyas & Khan, 2003; Wegge et al, 2006), but there are a few cases of temperate species consuming animal foods. For example, deer in the United States and Argentina have been recorded consuming chicks, eggs, and insects (Ellis‐Felege et al, 2008; Pietz & Granfors, 2000; Shaw, 1963; Vazquez et al, 2023), while a captive‐reared Gazella dorcas consumed a variety of animal matter including ants, bugs, and beetles (Blank, 2003). Published records of insect‐eating in wild tropical deer are difficult to find, and we suggest our observations are among the first confirmed cases.…”

Section: Discussionmentioning

confidence: 99%

“…Tropical deer species can be voracious consumers of both fruits and seeds (Harrison et al, 2013; Sridhara et al, 2016), playing important roles in seed dispersal and seed predation in landscapes that are adequately protected from poaching (Bodmer, 1991; Brodie et al, 2009; Prasad et al, 2006; Sridhara et al, 2016). Otherwise, tropical deer are herbivorous (Sridhara et al, 2016), although opportunistic studies on temperate species have documented opportunistic carnivory through the depredation of birds' nests, insect consumption, and even scavenging of human bones (Ellis‐Felege et al, 2008; Meckel et al, 2018; Pietz & Granfors, 2000; Shaw, 1963; Vazquez et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Fruiting trees provide fruit and insect resources for four tropical deer species

Awasthi,

Chen,

McConkey

2024

Ecosphere

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Fruiting trees provide important fruit and seed resources for various animal species, but rarely are they considered to be rich sources of insects as well. During a study of seed dispersal of Trewia nudiflora (Euphorbiaceae) using camera traps in Nepal, we observed four tropical deer species (Axis axis, Muntiacus vaginalis, Rusa unicolor, Axis porcinus) foraging for insects, rather than fruits under the trees. These herbivorous deer are proven seed dispersers of Trewia, but 8%–38% of video captures (across each species) were of insectivory, rather than frugivory. The deer chased and consumed red cotton bugs (Dysdercus sp. family Pyrrhocoridae), which were seed predators that hoarded Trewia seeds. It is likely that other unidentified insect species were also consumed. Tropical deer species are considered to be fully herbivorous, so our observations extend their known diets and possibly indicate a seasonal requirement for protein. These findings also highlight tri‐trophic interactions among deer, insects, and fruits that could have important implications for seedling recruitment if seed predators are being consumed by seed dispersers (in addition to fruit consumption).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fruiting trees provide fruit and insect resources for four tropical deer species

Awasthi,

Chen,

McConkey

2024

Ecosphere

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“…Predatory behaviour in deer might not be entirely out of character, as not often, but occasionally, they have been recorded eating eggs or chicks (Ellis‐Felege et al, 2008; Pietz & Granfors, 2000; Table 1). The latter, added to our findings in wetlands of the Patagonian steppe (Vazquez & Amico, 2023), motivated us to investigate this behaviour in the scientific literature and explore audio‐visual platforms (Appendix S2) for information supporting this food item in the deer's diet. A video uploaded by Ducks Unlimited organization recorded with a camera trap shows a White‐tailed deer ( Odocoileus virginianus ) eating eggs from a mallard nest ( Anas platyrhynchos ).…”

Section: New Findings and Collection Of Previous Relevant Informationmentioning

confidence: 99%

“…We studied nest predation in wetlands of the Patagonian steppe, to determine both the assemblage of predators and predation rates associated with habitat complexity. We placed artificial nests on shrubs and ground in wetland and grassland area (Vazquez & Amico, 2023). Camera traps facing the nests were set up to catch any plunderers in the act or nest raid.…”

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confidence: 99%

Herbivores but not vegans: Deer as nest predators

2023

Self Cite

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Deer abundance and occupancy areas are currently increasing worldwide, with unknown consequences for birds. Deer impacts on birds have mainly been assumed to be indirect through mechanisms that negatively influence vegetation complexity and reduce habitat quality. Information on the direct negative impacts on bird breeding success is scattered and rudimentary. Here we documented, through videos filmed with camera traps, non‐native deer preying on bird nests. We supported this finding by investigating nest predator behaviour in other areas of the world both in the scientific literature and audio‐visual platforms. We suggest that our scientific naturalist records and the collected information might reflect poorly understood deer behaviour, in both native and non‐native populations. In areas with a high number of individuals, nest predation by deer could have severe consequences for native birds, causing serious alterations in their breeding biology. Future studies are needed to address questions about the consequences of an increase in deer density on avian populations.

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“…It is well understood that invasive species have devastating impacts on a range of systems and species through various ecological processes. From natural history observations, we can improve our understanding of the invasive species' ecologies including previously unknown behaviours, such as two non‐native deer species, Fallow deer ( Dama dama ) and Red deer ( Cervus elaphus ), consuming eggs from bird nests (Vazquez et al., 2023). Or the adoption of prey‐switching behaviours when in drought conditions, with a juvenile red fox ( Vulpes vulpes ) in poor body condition attempting to predate a sand goanna ( Varanus gouldii ) (Brown et al., 2020) or freshwater jellyfish Craspedacusta sowerbii invading in north Patagonian lakes displaying phenotypic plasticity in response to differing diet quality (Caputo et al., 2021).…”

Section: Natural History and Invasive Speciesmentioning

confidence: 99%

An Austral Ecology 5 year retrospective on Natural History Notes: A compelling case for curiosity

Courtney Jones

2024

Austral Ecology

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show abstract

Nest predation in Patagonian wetlands: predator assemblage and microhabitat characteristics

Cited by 3 publications

References 62 publications

Fruiting trees provide fruit and insect resources for four tropical deer species

Fruiting trees provide fruit and insect resources for four tropical deer species

Herbivores but not vegans: Deer as nest predators

An Austral Ecology 5 year retrospective on Natural History Notes: A compelling case for curiosity

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