Density and diet of invasive alien anuran species in a disturbed landscape:  A case in the University of the Philippines Mindanao, Davao City, Philippines

Jabon, Kublai Januar; Gamalo, Lief Erikson; Responte, Mae; Abad, R. G.; Gementiza, Glenn Dale; Achondo, Marion John Michael

doi:10.13057/biodiv/d200917

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…To date, published literature on anurans in green spaces of Davao City is still sparse. Although existing studies on anurans of the city were already published (Ibañez et al 2012;Apayor-Ynot et al 2017;Dacalus et al 2017;Baron et al 2019;Jabon et al 2019;Gersava et al 2020), data from these accounts were from surveys conducted on a single location within Davao City. In contrast, the present study provides data on anurans in green spaces previously not surveyed and has included several locations.…”

Section: Resultsmentioning

confidence: 99%

“…In the Philippines, accounts of anurans in non-forested habitats are available, but these are direct comparisons to species found in forested areas close to surveyed non-forested areas (Aureo and Bande 2019;Cruz et al 2019). Philippine data on anurans documented from urban green spaces in highly urbanized localities are limited to current writing (Apayor-Ynot et al 2017;Jabon et al 2019;Gersava et al 2020;Duco et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Anurans of select green spaces of Davao City, Mindanao Island, Philippines

et al. 2022

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Abstract. Delima-Baron EM, Ruales CAS, Tripole C. Tagoon MDT, Susulan TB. 2022. Anurans of select green spaces of Davao City, Mindanao Island, Philippines. Biodiversitas 23: 4810-4815. Data on anurans in green spaces, especially in highly urbanized cities, including Davao, is still very limited. We present for the first time a checklist of anuran species from six green spaces of Davao City previously not surveyed for anuran data. Anurans were documented from January to April 2019 using visual encounter techniques coupled with microhabitat searches on several nocturnal surveys. Eighteen species representing seven families were recorded. Three endemic species: Pelophryne brevipes, Fejervarya moodiei, and F. vittigera, were added to the current list of anurans known from green spaces of Davao City, bringing the total known species for Davao City to 23. Thirteen of the species recorded are endemic. Two species under the Near Threatened category of IUCN, Limnonectes magnus and Sanguirana everetti, were also documented. The study also accounted for four invasive species: Rhinella marina, Eleutherodactylus planirostris, Hoplobatrachus rugulosus, and Kaloula pulchra. However, these species were encountered only in sites with artificial structures nearby, prominent noise, and has less heterogeneous vegetation. Data adds to the limited account of anurans in Davao City’s green spaces. Adding more species also implies that the list of anurans from Davao City’s green spaces is far from complete. Exploration of other green spaces available in the city is necessary to fully understand anuran species composition and the value of green spaces to the persistence of this taxon even in highly urbanized areas.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anurans of select green spaces of Davao City, Mindanao Island, Philippines

et al. 2022

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“…Masao (9°00′10.2″N and 125°29′23.0″E) is a coastal area with human settlement, beach resorts, and an adjacent river system ( Torralba et al ., 2022 ). Within each barangay, extensive and opportunistic sampling was employed in collecting invasive anurans from 7:00 to 9:00 P.M., using handling equipment such as gloves and wooden sticks, then placed inside a net bag ( DENR-BMB 2017 ; Jabon et al ., 2019 ). Available taxonomic keys, published articles, and other online sources were utilized for identifying the captured IAS ( Solania & Fernandez-Gamalinda, 2018 ; Diesmos et al ., 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Parasitic helminths of alien invasive anurans in Butuan City, Northeastern Mindanao, Philippines

Torralba,

Gamalinda,

Estaño

2023

Helminthologia

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Summary This study aimed to identify the helminth parasites of invasive anuran species in selected barangays in Butuan City, Philippines. In urbanized areas, invasive species dominate anuran diversity, and one of the primary threats they pose to native wildlife is the transmission of diseases and parasites. Out of the 91 collected individuals of invasive anuran species, Rhinella marina was the most abundant (88 %), followed by Hoplobatrachus rugulosus (12 %) and Kaloula pulchra (3 %). The study identified five species of parasites, with Spirometra sp. being the most prevalent (17.58 %), followed by Echinostoma sp. (16.5 %), Rhabdias bufonis (14.3 %), Cosmocerca sp. (6.6 %), and Strongyloides stercoralis (3.30 %), respectively. Spirometra sp. also had the highest intensity (7.67), followed by Cosmocerca sp. (5), Strongyloides stercoralis (3.33), Rhabdias bufonis (3.30), and Echinostoma sp. (2.73). This parasitological survey revealed that H. rugulosus had the highest prevalence and infection of parasites, and residential areas had the highest parasite prevalence among the habitat types. Adult hosts were found to harbor a higher prevalence and intensity, and male hosts had a higher prevalence. The results highlight the high risk of parasite transmission from anurans to other animals and emphasize the need for the community to control the population of invasive anuran species for the safety of native anurans and to prevent zoonotic transmission to other animals and humans.

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“…For example, the presence of invasive Oreochromis niloticus [220], C. batrachus, Pterygoplichthys disjunctivus, and Channa striata [221] in the Philippines suggests that studies on IAS are vital to assess the possible impacts they may impose on existing local ecosystems. However, the Philippines have also recorded invasive amphibians originating from different parts of the world that have become widespread and competed with native frog species [222,223].…”

Section: Background On Invasive Alien Species Across Southeast Asiamentioning

confidence: 99%

Detection and Management of Freshwater Invasive Alien Species through Environmental DNA Analysis and Geographic Information Systems: A Review

et al. 2023

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Freshwater invasive alien species (IAS) are non-native organisms that were intentionally or unintentionally released into local water bodies and later harmed the invaded habitat by disrupting the ecological processes. Over the last few years, environmental deoxyribonucleic acid (eDNA) analyses have been used in many studies to detect IAS, with positive results. However, with the help of geographic information systems (GIS), efforts to detect the presence of IAS can be made faster and more efficiently. In this paper, we review the background of IAS in Southeast Asia and management efforts undertaken involving the input of known habitat-specific geographical parameters into GIS mapping. Via this strategy, it is possible to identify and distinguish areas that fit IAS habitat features from those that do not. eDNA analysis can later be applied to confirm the presence of IAS in detected areas, enabling further studies and actions. The presence of IAS in certain areas can be used as an indicator to assess the environmental integrity of native waterways. This combined method is likely the first approach to be applied to the detection of freshwater IAS in local water bodies. Apart from saving energy and resources, embedding GIS and eDNA into the study of IAS not only benefits the ecosystem but also assists locals and authorities in managing and taking necessary enforcement actions to curb further spread.

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Density and diet of invasive alien anuran species in a disturbed landscape: A case in the University of the Philippines Mindanao, Davao City, Philippines

Cited by 5 publications

References 23 publications

Anurans of select green spaces of Davao City, Mindanao Island, Philippines

Anurans of select green spaces of Davao City, Mindanao Island, Philippines

Parasitic helminths of alien invasive anurans in Butuan City, Northeastern Mindanao, Philippines

Detection and Management of Freshwater Invasive Alien Species through Environmental DNA Analysis and Geographic Information Systems: A Review

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