Ruchira Somaweera

ORCID: 0000-0002-7470-8736
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About
Contact & Profiles
Research Areas
  • Amphibian and Reptile Biology
  • Wildlife Ecology and Conservation
  • Turtle Biology and Conservation
  • Species Distribution and Climate Change
  • Animal Behavior and Reproduction
  • Ichthyology and Marine Biology
  • Fish Ecology and Management Studies
  • Animal and Plant Science Education
  • Fish Biology and Ecology Studies
  • Avian ecology and behavior
  • Venomous Animal Envenomation and Studies
  • Marine animal studies overview
  • Paleontology and Evolutionary Biology
  • Bat Biology and Ecology Studies
  • Rabies epidemiology and control
  • Coral and Marine Ecosystems Studies
  • Plant and animal studies
  • Agriculture, Water, and Health
  • Yersinia bacterium, plague, ectoparasites research
  • Cephalopods and Marine Biology
  • Marine and fisheries research
  • Ecology and Vegetation Dynamics Studies
  • Evolution and Paleontology Studies
  • Animal Vocal Communication and Behavior
  • Spider Taxonomy and Behavior Studies

Murdoch University
2017-2025

Stantec (Canada)
2025

Stantec (United States)
2021-2024

The University of Western Australia
2018-2023

CSIRO Health and Biosecurity
2019-2021

CSIRO Land and Water
2015-2020

Hydrologic Research Center
2015

The University of Sydney
2010-2013

International Union for Conservation of Nature (United Kingdom)
2013

University of Peradeniya
2008-2009

Although adult crocodilians have few predators (mostly humans and other crocodilians), hatchlings eggs are killed consumed by a diverse array of invertebrates, fishes, anurans, reptiles, birds, mammals. We review published literature to evaluate the incidence predation in crocodilian populations, implications that mortality for life-history evolution. Presumably because is size-dependent, small-bodied taxa appear be more vulnerable (across range life stages) than larger-bodied species....

10.1655/herpmonographs-d-11-00001 article EN Herpetological Monographs 2013-12-01

A recent paper dealing with the systematics of Uropeltidae (Pyron et al. 2016) made several taxonomic changes affecting Sri Lankan species in genera Platyplectrurus Günther, 1868; Pseudotyphlops Schlegel, 1839; Rhinophis Hemprich, 1820; and Uropeltis Cuvier, 1829. Space precluded a full discussion those changes, for which there was wealth additional photographs, data, references. Here, we expand on alterations provide further justification reference to ICZN (1999) questions future research.

10.11646/zootaxa.4560.3.13 article EN Zootaxa 2019-02-26

Marine snakes represent the most speciose group of marine reptiles and are a significant component reef coastal ecosystems in tropical oceans. Research on this has historically been challenging due to difficulty capturing, handling keeping these animals for field- lab-based research. Inexplicable declines snake populations across global hotspots have highlighted lack basic information elevated multiple species as conservation priorities. With increased interest research snakes, we conducted...

10.3389/fmars.2018.00399 article EN cc-by Frontiers in Marine Science 2018-11-06

Predicting the ecological impacts of invasive species on native fauna is a formidable challenge for conservation biologists. One way to deal with that stage encounters between invader and in laboratory, illuminate likely outcomes wild. The invasion highly toxic cane toad Rhinella marina across tropical Australia threatens many frog-eating predators, including freshwater crocodiles (Crocodylus johnstoni). To predict impact toads crocodiles, we need know whether will attack toads, predators...

10.1163/000579511x565763 article EN Behaviour 2011-01-01

Abstract The most substantial (and to date, unexplained) heterogeneity in the impact of toxic cane toads ( R hinella marina ) on native fauna tropical A ustralia involves freshwater crocodiles C rocodylus johnstoni ); some populations have experienced catastrophic mortality whereas others been unaffected. trend for higher more arid areas suggests that W estern ustralian K imberley region) crocodile may be at high risk. We monitored densities and body sizes, spread toads, a large water L ake...

10.1111/j.1469-1795.2011.00500.x article EN Animal Conservation 2011-11-15

We present a catalogue and systematic overview of Uropeltidae Müller, 1832 based on both new previously published molecular morphological data, phylogenetic analysis. support the monophyly distinctiveness Brachyophidium Wall, 1921, Melanophidium Günther, 1864, Platyplectrurus 1868, Pseudoplectrurus Boulenger, 1890, Teretrurus Beddome, 1886. move Uropeltis melanogaster (Gray, 1858), U. phillipsi (Nicholls, 1929), Pseudotyphlops Schlegel, 1839 to Rhinophis Hemprich, 1820, re-name philippinus...

10.5252/z2016n4a2 article EN Zoosystema 2016-12-27

Snakebite affects more than 1.8 million people annually. Factors explaining snakebite variability include farmers' behaviors, snake ecology and climate. One unstudied issue is how adaptation to novel climates affect their health. Here we examined potential impacts of on using individual-based simulations, focusing strategies meant counteract major crop yield decline because changing rainfall in Sri Lanka. For rubber cropping, led a 33% increase incidence per farmer work hour during risky...

10.1016/j.isci.2023.105946 article EN cc-by iScience 2023-01-07

Understanding the demographic structure is vital for wildlife research and conservation. For crocodylians, accurately estimating total length class usually necessitates close observation or capture, often of partially immersed individuals, leading to potential imprecision risk. Drone technology offers a bias-free, safer alternative classification. We evaluated effectiveness drone photos combined with head allometric relationships estimate length, propose standardized method drone-based...

10.3390/drones8030115 article EN cc-by Drones 2024-03-21

Nest predation is considered to be one of the most significant biotic threats marine turtle populations globally. The introduction feral predators nesting beaches has dramatically increased nest predation, reaching near total egg loss in some regions. We monitored a 48 km stretch beach along western Cape York Peninsula, Australia, from June – November 2018. recorded 360 nests comprising 117 flatback and 243 olive ridley nests. installed plastic meshing (90 cm × 100 cm) on 110 (45.2% clutches...

10.1016/j.biocon.2019.108201 article EN cc-by Biological Conservation 2019-08-19

Abnormal caudal regeneration, the production of additional tails through regeneration events, occurs in lepidosaurs as a result incomplete autotomy or sufficient wound. Despite being widely known to occur, documented events generally are limited opportunistic single observations - hindering understanding ecological importance regeneration. Here we compiled and reviewed robust global database both peer-reviewed non-peer records abnormal published over last 400 years. Using this database,...

10.1111/brv.12625 article EN Biological reviews/Biological reviews of the Cambridge Philosophical Society 2020-06-25

Exploitation of snakes in Vietnam takes place for different purposes, and among them the snake wine industry is prominent but has received far less attention than other dealings, such as pet trade. Despite widespread commercialisation there a general lack information about this trade, which makes it difficult to evaluate its magnitude impact on populations. This study documents use four cities through surveys conducted 127 locations selling September 2009. provides list species used along...

10.11609/jott.o2361.1251-60 article EN cc-by Journal of Threatened Taxa 2010-10-26

Abstract As one of the world's largest predators freshwater environments, crocodylians play an important role in shaping their community. In turn, many aspects crocodylian life histories are influenced and have been shaped by characteristics environment, especially vegetation. However, our understanding just how vegetation impacts remains limited, particularly regard to indirect interactions. Such interactions can be critical for population dynamics and, therefore, informing conservation...

10.1111/fwb.13221 article EN Freshwater Biology 2018-12-09

Over the past decade, vertebrate populations globally have experienced significant declines in distribution and abundance. Understanding reasons behind these population is first step implementing appropriate management responses to improve conservation outcomes. Uncovering drivers of extirpation events after fact, however, requires a careful forensic approach prevent similar elsewhere. The once abundant species-rich sea snake fauna Ashmore Reef Marine Park, Timor Sea, collapsed dramatically...

10.3389/fmars.2021.658756 article EN cc-by Frontiers in Marine Science 2021-06-01

Abstract The ecological impact of an invasive species can be heterogeneous through space and time. One such case in A ustralia involves native freshwater crocodiles C rocodylus johnstoni , which are highly sensitive to cane toads R hinella marina some areas, whereas other populations experience little or no mortality from ingestion the toxic toads. We studied toad invasion on three crocodile populations: one crashed, showed a minor decrease appeared unaffected. tested hypotheses for cause...

10.1111/j.1469-1795.2012.00578.x article EN Animal Conservation 2012-07-31

Remote video cameras recorded eight instances of nest excavation and parental transport offspring to the water by Australian freshwater crocodiles (Crocodylus johnstoni) inhabiting Lake Argyle in northwestern Australia. Parental assistance during hatching appears be vital for successful emergence hatchlings from nests this area.

10.1670/11-056 article EN Journal of Herpetology 2012-09-01

Abstract Most animals select nest sites non‐randomly, reflecting benefits of specific locations or incubation conditions for offspring viability as well risks costs to the reproducing adult. If few no available offer suitable conditions, we expect make best a bad lot, by selecting that provide available. In tropical north‐western Australia, freshwater crocodiles ( Crocodylus johnstoni : Crocodylidae) in large artificial lake (Lake Argyle) experience this challenge: types used species other...

10.1111/j.1442-9993.2012.02406.x article EN Austral Ecology 2012-05-24

The Pilbara leaf-nosed bat (Rhinonicteris aurantia ‘Pilbara form’) is a threatened insectivorous microbat endemic to the region of Western Australia. It at risk significant population decline, particularly due habitat loss from mining. To address its key threats, stakeholders range backgrounds collectively listed and prioritised research actions in 2013. This exercise was repeated 2022 evaluate update progress priorities. We conducted review scientific grey literature (2013–2023) to: (1)...

10.1071/pc23031 article EN Pacific Conservation Biology 2024-02-25
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