Prioritising Conservation Area in Species Management Strategy for The Edible Bornean Giant River Frog Limnonectes leporinus Anderson 1923
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Abstract
Limnonectes leporinus, the endemic giant river frog, is a riparian (stream dwelling) species that lives along streams with moderate to steep gradients. The most serious threats to the species are deforestation caused by severe clear cutting, which fragments its distribution, and overhunting for local consumption. Excessive landscape modification alters habitat, making it critical for an organism to maintain heterozygozity for the population to be fit to adapt to a changing environment. The goal of this research was to project suitable habitats and predict the potential for habitat connectivity to allow gene flow across the Sarawak landscape. The presence data file and environmental layers were converted into ASCII format using ArcGIS and then used in MaxEnt modelling to generate the map of suitable habitats. To perform the connectivity model, the potential habitat model and genetic attributes of haplotype data were computerised in Circuitscape software. The findings revealed that suitable habitats corresponded to species distribution in lowland areas with sustainable stream networks as breeding sites, while higher elevations were identified as unsuitable habitats. Gene flow data, on the other hand, revealed that connectivity circuits are mostly found in unprotected forest, which includes development areas and private lands. As a result, prioritising conservation areas should include local governments and landowners in proper landscape management as well as species management strategies. This indirectly sustains and protects Borneo’s forests, flora and fauna.
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References
Collen B, Ram M, Zamin T and McRae L. (2008). The tropical biodiversity data gap: Addressing disparity in global monitoring. Tropical Conservation Science 1(2): 75–88. https://doi.org/10.1177/194008290800100202
Emerson S B. (1992). Courtship and nest-building behavior of a Bornean frog, Rana blythi. Copeia 4: 1123–1127. https://doi.org/10.2307/1446654
Escalante T, Rodriguez-Tapia G, Linaje M, Illoldi-Rangel P and Gonzalez-Lopez R. (2013). Identification of areas of endemism from species distribution models: Threshold selection and Nearctic mammals. TIP Revista Especializada en Ciencias Químico-Biológicas 16(1): 1–16. https://doi.org/10.1016/S1405-888X(13)72073-4
Grafe T U. (2011). Beyond taxonomy: Radiotelemetry of the giant river frog Limnonectes leporinus in the Ulu Temburong National Park, Brunei Darussalam. In I Das, A Haas and A A Tuen (eds.). Proceedings of the Conference Biology of the Amphibians in the Sunda Region, South-east Asia: Biology and Conservation of Tropical Asian Amphibians. Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia, 28–30 September 2009. Sarawak: Universiti Malaysia Sarawak, 50–60.
Hadil R. (2002). Ecological balance of Batang Lupar estuary: Potential impacts and mitigations. Fisheries Research Institute Newsletter 4(1): 1–64.
Ho A L, Gooi C T and Pang H K. (2008). Proximate composition and fatty acid profile of anurans meat. Journal of Science and Technology 22(1): 23–29.
Hudson R R, Boos D D and Kaplan N L. (1992). A statistical test for detecting population subdivision. Molecular Biology and Evolution 9(1): 138–151. https://doi.org/10.1093/oxfordjournals.molbev.a040703
Hudson R R, Slatkin M and Maddison W P. (1992). Estimation of levels of gene flow from DNA sequence data. Genetics 132(2): 583–589. https://doi.org/10.1093/genetics/132.2.583
Hughes A C. (2017). Mapping priorities for conservation in Southeast Asia. Biological Conservation 209: 395–405. https://doi.org/10.1016/j.biocon.2017.03.007
Inger R F. (2009). Contributions to the natural history of seven species of Bornean fanged frogs. Feldiana Zoology 116: 1–25. https://doi.org/10.3158/0015-0754-116.1.1
Inger R F and Voris H K. (2001). The biogeographical relations of the frogs and snakes of Sundaland. Journal of Biogeography 28(7): 863–891. https://doi.org/10.1046/j.1365-2699.2001.00580.x
Inger R F, Stuebing R B, Grafe T U and Dehling J M. (2017). A field guide to the frogs of Borneo. Kota Kinabalu: Natural History Publications (Borneo).
Iskandar D T. (2004). The amphibian and reptiles of Malinau Region, Bulungan Research Forest, East Kalimantan: Annotated checklist with notes on ecological preferences of the species and local utilization. Jakarta: Center for International Forestry Research.
IUCN. (2021). Limnonectes leporinus. The IUCN Red List of Threatened Species, version 227 2021–1. https://www/iucnredlist.org (accessed on 1 April 2021).
Kusrini M D. (2005). Edible frog harvesting in Indonesia: Evaluating its impact and ecological context. PhD diss., James Cook University.
Lynch M and T J Crease. (1990). The analysis of population survey data on DNA sequence variation. Molecular Biology and Evolution 7(4): 377–394. https://doi.org/10.1093/oxfordjournals.molbev.a040607
Matsui M, Nishimura T, Eto K, Kuraishi N, Hamidy A, Nishikawa K and Sudin A. (2015). Genetic divergence in a Bornean fanged frog Limnonectes leporinus (Dicglossidae, Anura). Current Herpetology 34(1): 28–37: https://doi.org/10.5358/hsj.34.28
McCreless E, Visconti P, Carwardine J, Wilcox C and Smith R J. (2013). Cheap and nasty? The potential perils of using management costs to identify global conservation priorities. PLoS ONE 8(11): e80893. https://doi.org/10.1371/journal.pone.0080893
McRae B H, Dickson B G, Keitt T H and Shah V B. (2008). Using circuit theory to model connectivity in ecology, evolution and conservation. Ecology 89: 2712–2724. https://doi.org/10.1890/07-1861.1
Merow C, Smith M J and Silander J A. (2013). A practical guide to MaxEnt for modeling species’ distributions: What it does, and why inputs and settings matter. Ecography 36(10): 1058–1069. https://doi.org/10.1111/j.1600-0587.2013.07872.x
Phillips S J and Dudik M. (2008). Modeling of species distributions with MaxEnt: New extensions and a comprehensive evaluation. Ecography 31(2): 161–175. https://doi.org/10.1111/j.0906-7590.2008.5203.x
Phillips S J, Anderson R P, Dudík M, Schapire R E and Blair M E. (2017). Opening the black box: An open-source release of Maxent. Ecography 40(7): 887–893.
Pilliod D S, Arkle R S, Robertson J M, Murphy M A, Funk W C. (2015). Effects of changing climate on aquatic habitat and connectivity for remnant populations of a wide-ranging frog species in an arid landscape. Ecology and Evolution 5(18): 3979–3994. https://doi.org/10.1002/ece3.1634
Poor E E, Loucks C, Jakes A and Urban D L. (2012). Comparing habitat suitability and connectivity modeling methods for conserving pronghorn migrations. PLoS ONE 7(11): e49390. https://doi.org/10.1371/journal.pone.0049390
Rozas J, Ferrer-Mata A, Sanchez-DelBarrio J C, Guirao-Rico S, Librado P, Ramos-Onsins S E and Sanchez-Gracia A. (2017). DNASP v6: DNA sequence polymorphism analysis of large data sets. Molecular Biology and Evolution 34(12): 3299–3302. https://doi.org/10.1093/molbev/msx248
Scheldeman X and van Zonneveld M. (2010). Training manual on spatial analysis of plant diversity and distribution. Rome: Biodiversity International.
Trakhtenbrot A, Nathan R, Perry G and Richardson D M. (2005). The importance of long-distance dispersal in biodiversity conservation. Diversity and Distributions 11(2): 173–181. https://doi.org/10.1111/j.1366-9516.2005.00156.x
Zainudin R. (1998). Microgeographic variation of mitochondrial DNA in populations of Bornean riparian frogs. Master’s thesis, University of Illinois Chicago.
Zainudin R and Naim N. (2018). Genetic variation of the bornean fanged frog, Limnonectes kuhlii complex in western Borneo (Amphibia: Anura: Dicroglossidae). Malaysian Applied Biology 47(1): 73–80.
Zainudin R, Deka E Q and Georgy J. (2023). Mapping an organism management strategy for prioritizing conservation area via the horned frog, Pelobatrachus nasutus Schlegel 1858. In M I Z Abdul Thani and B Mahmood (eds.). Proceedings in Malaysia Conservation Conference Sub-Theme 2: Integrated Wildlife Management: Technology, Innovation and Practices. Imperial Hotel, Sarawak, Malaysia, 29–31 March.
Zainudin R, Md Zain B M, Ahmad N and Nor S M. (2017). Microhabitat partitioning of closely related Sarawak (Malaysian Borneo) frog species previously assigned to the genus Hylarana (Amphibia: Anura). Turkish Journal of Zoology 41(5): 876–891. https://doi.org/10.3906/zoo-1701-36
Zainudin R, Nor S M, Ahmad N, Md-Zain B M and Rahman M A. (2010). Genetic structure of Hylarana erythraea (Amphibia: Anura: Ranidae) from Malaysia. Zoological Studies 49(5): 688–702.
Zulkefli N H and Zainudin R. (2022). Ecological guilds of anuran species from different ecosystem types in Malaysia, Borneo (Sarawak). Journal of Sustainability Science and Management 17(4): 260–271. https://doi.org/10.46754/jssm.2022.4.019