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Asato H, Sueyoshi K, Nakagawa M, Sugawara R, Kadota Y, Kawauchi N, Kobayashi S, Izawa M, Toda M. Food Habits of the Taiwan Beauty Snake, Elaphe taeniura friesi, as an Introduced Species on Okinawajima Island. CURRENT HERPETOLOGY 2022. [DOI: 10.5358/hsj.41.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Hitomi Asato
- Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903–0213, JAPAN
| | - Kosuke Sueyoshi
- Okinawa Prefecture Environment Science Center, 720 Kyozuka, Urasoe, Okinawa 901–2111, JAPAN
| | | | - Ryo Sugawara
- Yachiyo Engineering, 3–21–1 Kumoji, Naha, Okinawa 900–0015, JAPAN
| | | | - Norihiro Kawauchi
- Island Wildlife Laboratory, 587–1–402 Goga, Nago, Okinawa 905–1154, JAPAN
| | - Shun Kobayashi
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903–0213, JAPAN
| | - Masako Izawa
- Kitakyushu Museum of Natural History & Human History, 2–4–1 Higashida, Yahatahigashi, Kitakyushu, Fukuoka 805–0071, JAPAN
| | - Mamoru Toda
- Tropical Biosphere Research Center, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903–0213, JAPAN
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Space use and activity of Boiga cyanea – A major songbird nest predator in a seasonal tropical forest in Thailand. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Sládeček M, Brynychová K, Elhassan E, Šálek ME, Janatová V, Vozabulová E, Chajma P, Firlová V, Pešková L, Almuhery A, Bulla M. Diel timing of nest predation changes across breeding season in a subtropical shorebird. Ecol Evol 2021; 11:13101-13117. [PMID: 34646455 PMCID: PMC8495801 DOI: 10.1002/ece3.8025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 07/20/2021] [Accepted: 07/26/2021] [Indexed: 11/30/2022] Open
Abstract
Predation is the most common cause of nest failure in birds. While nest predation is relatively well studied in general, our knowledge is unevenly distributed across the globe and taxa, with, for example, limited information on shorebirds breeding in subtropics. Importantly, we know fairly little about the timing of predation within a day. Here, we followed 444 nests of the red-wattled lapwing (Vanellus indicus), a ground-nesting shorebird, for a sum of 7,828 days to estimate a nest predation rate, and continuously monitored 230 of these nests for a sum of 2,779 days to reveal how the timing of predation changes over the day and season in a subtropical desert. We found that 312 nests (70%) hatched, 76 nests (17%) were predated, 23 (5%) failed for other reasons, and 33 (7%) had an unknown fate. Daily predation rate was 0.95% (95%CrI: 0.76% - 1.19%), which for a 30-day long incubation period translates into ~25% (20% - 30%) chance of nest being predated. Such a predation rate is low compared to most other avian species. Predation events (N = 25) were evenly distributed across day and night, with a tendency for increased predation around sunrise, and evenly distributed also across the season, although night predation was more common later in the season, perhaps because predators reduce their activity during daylight to avoid extreme heat. Indeed, nests were never predated when midday ground temperatures exceeded 45℃. Whether the diel activity pattern of resident predators undeniably changes across the breeding season and whether the described predation patterns hold for other populations, species, and geographical regions await future investigations.
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Affiliation(s)
- Martin Sládeček
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Kateřina Brynychová
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Esmat Elhassan
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
- Natural Resources Conservation SectionEnvironment DepartmentDubai MunicipalityAbu Hail, DubaiUnited Arab Emirates
| | - Miroslav E. Šálek
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Veronika Janatová
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Eva Vozabulová
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Petr Chajma
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Veronika Firlová
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Lucie Pešková
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
| | - Aisha Almuhery
- Natural Resources Conservation SectionEnvironment DepartmentDubai MunicipalityAbu Hail, DubaiUnited Arab Emirates
| | - Martin Bulla
- Faculty of Environmental SciencesCzech University of Life Sciences PraguePragueCzech Republic
- Department of Behavioural Ecology and Evolutionary GeneticsMax Planck Institute for OrnithologySeewiesenGermany
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Blackwell BF, Seamans TW, Pfeiffer MB, Buckingham BN. European Starling Nest‐site Selection Given Enhanced Direct Nest Predation Risk. WILDLIFE SOC B 2021. [DOI: 10.1002/wsb.1151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bradley F. Blackwell
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services National Wildlife Research Center 6100 Columbus Avenue Sandusky OH 44870 USA
| | - Thomas W. Seamans
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services National Wildlife Research Center 6100 Columbus Avenue Sandusky OH 44870 USA
| | - Morgan B. Pfeiffer
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services National Wildlife Research Center 6100 Columbus Avenue Sandusky OH 44870 USA
| | - Bruce N. Buckingham
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services National Wildlife Research Center 6100 Columbus Avenue Sandusky OH 44870 USA
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Chen P, Chen T, Liu B, Zhang M, Lu C, Chen Y. Snakes are the principal nest predators of the threatened reed parrotbill in a coastal wetland of eastern China. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Heat seekers: A tropical nocturnal lizard uses behavioral thermoregulation to exploit rare microclimates at night. J Therm Biol 2019; 82:107-114. [DOI: 10.1016/j.jtherbio.2019.03.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/07/2019] [Accepted: 03/30/2019] [Indexed: 11/22/2022]
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Kaisin O, Gazagne E, Savini T, Huynen MC, Brotcorne F. Foraging strategies underlying bird egg predation by macaques: A study using artificial nests. Am J Primatol 2018; 80:e22916. [PMID: 30307634 DOI: 10.1002/ajp.22916] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/05/2018] [Accepted: 08/17/2018] [Indexed: 11/07/2022]
Abstract
Bird egg predation is widespread in non-human primates. Although nest predation is often described as opportunistic, little is known about foraging strategies and nest detection in primates. Since it is the prevalent cause of nest failure in the tropics, birds select nest sites within specific microhabitats and use different nest types to increase nesting success. Identifying the nests targeted by the northern pigtailed macaques (Macaca leonina), an omnivorous cercopithecine species, and known nest predator, will shine light on nest foraging strategies in primates. The aim of this research was to reveal if nest predation is a selective or opportunistic feeding behavior. We studied, using artificial nests and camera traps, the influence of nest type (open-cup vs. cavity), microhabitat (i.e., understory density, canopy cover, canopy height, ground cover, and presence vs. absence of thorns and lianas), and nest height, on nest predation by a troop of northern pigtailed macaques in the Sakaerat Biosphere Reserve (Thailand), a degraded environment. In our study, macaque predation on artificial nests was high; out of the 200 nests that were set up, 112 were plundered by macaques. Although predation rates decreased with nest height, nest type, and microhabitat had no significant effect on predation by macaques. Nest detectability and accessibility did not affect predation rates. Macaques actively searched for nests in different microhabitats, suggesting that nest predation by this primate might be considered a selective feeding behavior in this degraded habitat. Consequently, nest predation by this primate might have important conservation implications on the population dynamics of forest-dwelling bird species. Behavior observation methods, such as instantaneous scan sampling, may underestimate nest predation by primates, a furtive and cryptic behavior.
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Affiliation(s)
- Olivier Kaisin
- Primatology Research Group, Behavioral Biology, University of Liège, Liège, Belgium
- Conservation Ecology Program, King Mongkut's University of Technology, Thakham, Bangkhuntien, Thailand
| | - Eva Gazagne
- Primatology Research Group, Behavioral Biology, University of Liège, Liège, Belgium
- Conservation Ecology Program, King Mongkut's University of Technology, Thakham, Bangkhuntien, Thailand
| | - Tommaso Savini
- Conservation Ecology Program, King Mongkut's University of Technology, Thakham, Bangkhuntien, Thailand
| | - Marie-Claude Huynen
- Primatology Research Group, Behavioral Biology, University of Liège, Liège, Belgium
| | - Fany Brotcorne
- Primatology Research Group, Behavioral Biology, University of Liège, Liège, Belgium
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Torello-Viera NF, Marques OA. Daily Activity of Neotropical Dipsadid Snakes. SOUTH AMERICAN JOURNAL OF HERPETOLOGY 2017. [DOI: 10.2994/sajh-d-16-00023.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Natália F. Torello-Viera
- Laboratório de Ecologia e Evolução, Instituto Butantan. Avenida Vital Brazil, 1500, CEP 05503-900, São Paulo, Brazil
| | - Otavio A.V. Marques
- Laboratório de Ecologia e Evolução, Instituto Butantan. Avenida Vital Brazil, 1500, CEP 05503-900, São Paulo, Brazil
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DeGregorio BA, Sperry JH, Tuberville TD, Weatherhead PJ. Translocating ratsnakes: does enrichment offset negative effects of time in captivity? WILDLIFE RESEARCH 2017. [DOI: 10.1071/wr17016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Context
Wildlife translocation is a conservation tool with mixed success. Evidence suggests that longer time in captivity may negatively affect an animal’s post-release behaviour and survival. However, environmental enrichment may reduce the deleterious effects of captivity for animals that are going to be released into the wild.
Aims
The aim of the present study was to compare first-year post-release survival and behaviour of translocated ratsnakes (Pantherophis obsoletus) held captive for varying durations (1–7 years) either with or without enrichment, with that of resident and wild-to-wild (W–W)-translocated ratsnakes.
Key results
Being in captivity before release negatively affected survival; 11 of 19 (57.9%) captive snakes died or were removed from the study within 12 months, compared with 3 of 11 (27.3%) resident snakes and none of five (0%) W–W snakes. Furthermore, survival probability declined the longer a snake had been in captivity. Six of the seven snakes (86%) that we released that had been in captivity for four or more years before release died during this study, regardless of whether they were enriched or not. Although W–W-translocated ratsnakes moved more often and further than did snakes in other groups, this difference was apparent only in the first month post-release. We found no evidence that abnormal movement patterns or winter behaviour was the cause of reduced survival for captive snakes. Instead, our data suggested that spending time in captivity reduced concealment behaviour of snakes, which likely increased the vulnerability of snakes to predators. Captivity also compromised the foraging ability of some of the snakes. Although there were no overall differences in percentage weight change among the four groups, two snakes (one enriched, one unenriched) were removed from the study because of extreme weight loss (>30%).
Conclusions
Our results suggested that environmental enrichment did not offset the negative effects of captivity on ratsnakes and that the likely mechanism responsible for low survival was vulnerability to predators.
Implications
Whether extended periods in captivity render other species unsuitable for translocation, how long it takes for captivity to have deleterious effects, and whether environmental enrichment is also ineffective at offsetting captivity effects in other species remain to be determined.
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