A New Color Morph of the Southern Purple-faced Langur (Semnopithecus vetulus vetulus) from the Rainforests of Southwestern Sri Lanka

Roscoe, Charlotte; Silva, Madura A. de; Hapuarachchi, Nadika C.; Krishantha, P.A. Rohan

doi:10.1896/052.026.0110

Cited by 8 publications

(6 citation statements)

References 18 publications

(22 reference statements)

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“…Nekaris and Jayewardene [2004] reported that electrocution was the main known cause of loris mortality in areas of Sri Lanka that are heavily populated by humans. A similar threat has been reported for the critically endan-gered purple-faced langur in the human-dominated landscapes of south-western Sri Lanka [Rudran, 2007;Parker et al, 2008;Roscoe et al, 2013]. The shields would offer little protection where wires are accessed through trees.…”

Section: Shield Use For Other Primate Species and Environmentssupporting

confidence: 55%

“…Electrocutions have been documented for Asian elephants [Palei et al, 2014], raptors worldwide [Jenkins et al, 2010;Guil et al, 2011] as well as primates in Africa [Maibeche et al, 2015;Katsis et al, 2018], Latin America [Printes, 1999;Goulart et al, 2010;Rodrigues and Martinez, 2014], and Asia [Dittus, 1986;Rudran, 2007;Moore et al, 2010;Kumar and Kumar, 2015;Ram et al, 2015;Al-Razi et al, 2019]. To mitigate such events among primates, a variety of protective measures have been suggested including canopy bridges over power lines, tree trimming, wire insulation, and braiding of power lines [Valladares-Padua et al, 1995;Printes, 1999;Lokschin et al, 2007;Roscoe et al, 2013;Teixeira et al, 2013;Gregory et al, 2017].…”

Section: Introductionmentioning

confidence: 99%

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Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka

Dittus

2020

IJFP

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When monkeys, such as the toque macaques (Macaca sinica) of Sri Lanka, seek food on the ground near human habitation, they may use electrical posts to escape aggression from conspecifics, dogs, or humans. Shields mounted on electrical posts prevented monkeys from reaching the electrical wires, thereby averting their electrocution: the frequency of electrocutions (n = 0) was significantly less (p < 0.001) in the 12 years after installation of the shields than in the 12 years before (n = 18). Electric shocks were either fatal (n = 14) or caused permanent injury (n = 4) (collectively referred to as electrocutions hereafter). The shields may find broader applications in other primate species and environments wherever monkeys are attracted by human food near electrical posts. Primates and other arboreal mammals also accessed live wires from trees; at known electrocution hotspots, short spans of exposed wires were insulated by encapsulating them in PVC water pipes. It was impossible, however, to prevent electrocutions from all electric supply infrastructures that put monkeys at risk. A wider use of insulated electric conductors in planning power distribution in habitats frequented by wild animals would be desirable in preventing electric shocks to wildlife.

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Section: Shield Use For Other Primate Species and Environmentssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka

Dittus

2020

IJFP

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“…Electrocutions are documented for a range of primate species across Asia (Kumar and Kumar 2015 ; Nekaris and Jayewardene 2004 ; Roscoe et al 2013 ), Africa (Maibeche et al 2015 ; Slade 2016 ), and Latin America (Goulart et al 2010 ; Printes 1999 ; Rodrigues and Martinez 2014 ). They are a principal mortality factor for the Endangered Central American squirrel monkey subspecies Saimiri oerstedii citrinellus and Saimiri oerstedii oerstedii (Boinski et al 1998 ), and were found to be the most common cause of death for a population of Hanuman langurs ( Semnopithecus entellus ) (Ram et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

“…As habitat encroachment increases and power line networks rapidly expand, this problem is likely to escalate in the future (Bevanger 1994 ; Jenkins et al 2010 ), and development of effective evidence-based mitigation strategies is crucial (Sutherland et al 2004 ). Current strategies to reduce electrocution include power line insulation, tree-trimming around power lines, artificial canopy bridges, and braiding of power lines (Lokschin et al 2007 ; Printes 1999 ; Roscoe et al 2013 ); however, their effectiveness in reducing electrocutions is rarely evaluated (Teixeira et al 2013 ). Limited funding makes mitigation measures across the entire power grid unfeasible; therefore measures must be targeted to high-risk areas (Dwyer et al 2014 ; Lokschin et al 2007 ).…”

Section: Introductionmentioning

confidence: 99%

Spatial Patterns of Primate Electrocutions in Diani, Kenya

et al. 2018

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Electrocution from power infrastructure threatens many primate species, yet knowledge of effective evidence-based mitigation strategies is limited. Mitigation planning requires an understanding of the spatial distribution of electrocutions to prioritize high-risk areas. In Diani, a coastal Kenyan town, electrocution is an important cause of death for five primate species. In this study we aim to describe the spatial patterns of electrocutions and electric shock incidents (collectively referred to as electrocutions hereafter) and identify electrocution hotspots to guide an effective primate conservation approach in Diani. Colobus Conservation, a not-for-profit organization, has recorded electrocutions and annual primate census data since 1998. We georeferenced 329 electrocution data points and analyzed them using QGIS. We identified and compared hotspots across species, seasons, and time using kernel density estimation and Getis-Ord-Gi*. We employed spatial regression models to test whether primate population density and power line density predicted the location of electrocution hotspots. Electrocutions occurred in hotspots that showed little variation in location between species and seasons. The limited variation in hotspot location over time likely occurred as a result of new building development in Diani and variability in primate detection rates by community members. Primate density and power line density were significant predictors of electrocution density for Angolan black-and-white colobus (Colobus angolensis palliatus) and Sykes monkeys (Cercopithecus mitis albogularis), but the relationship was weak, suggesting the presence of additional risk factors. This study provides a framework for systematic spatial prioritization of power lines that can be used to reduce primate electrocutions in Diani, and can be adopted in other areas of the world where primates are at risk from electrocution.Electronic supplementary materialThe online version of this article (10.1007/s10764-018-0046-6) contains supplementary material, which is available to authorized users.

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“…Así mismo, medidas de manejo como el balizamiento o señalización de las redes eléctricas, la poda de los árboles circundantes a ellas y finalmente, la reubicación del cableado eléctrico por debajo del suelo. Por último, es importante realizar monitoreos de las poblaciones de monos nocturnos y sus movimientos, principalmente en zonas urbanas y periurbanas, para desarrollar estrategias específicas dadas las características de las diferentes regiones y capacitar a la comunidad en el manejo de estos eventos de electrocución (Printes 1999;De la Zerda & Rosselli 2003;Lokschin et al 2007;Saavedra-Rodríguez et al 2013;Roscoe et al 2013).…”

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Eventos de electrocución de Aotus lemurinus (Primates: Aotidae) en los Andes Centrales de Colombia

Montilla¹,

Rios-Soto

Mantilla-Castaño

et al. 2020

MaNo

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Los primates que habitan en los ecosistemas de montaña de la cordillera de Los Andes en Colombia están expuestos a fuertes amenazas como consecuencia del desarrollo de la infraestructura y la transformación del uso del suelo en lo que corresponde a la región más densamente poblada de Colombia. Para el género Aotus cuyos hábitos son principalmente nocturnos las amenazas sobre sus poblaciones no han sido bien documentadas hasta la fecha, aunque especies como el mono nocturno andino (Aotus lemurinus) ha sido catalogado como Vulnerable a nivel nacional y global. En este estudio, compilamos registros recientes de individuos de Aotus lemurinus muertos por electrocución accidental en cuatro departamentos de los Andes Centrales de Colombia. Estos registros contribuyen al conocimiento previo sobre esta problemática a nivel nacional y resaltan la necesidad de formular e implementar estrategias de mitigación del riesgo de electrocución para esta y otras especies.

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A New Color Morph of the Southern Purple-faced Langur (Semnopithecus vetulus vetulus) from the Rainforests of Southwestern Sri Lanka

Cited by 8 publications

References 18 publications

Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka

Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka

Spatial Patterns of Primate Electrocutions in Diani, Kenya

Eventos de electrocución de Aotus lemurinus (Primates: Aotidae) en los Andes Centrales de Colombia

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