{"id":4523,"date":"2026-01-06T18:41:16","date_gmt":"2026-01-06T18:41:16","guid":{"rendered":"https:\/\/komodopadartour.com\/?p=4523"},"modified":"2026-01-06T18:41:16","modified_gmt":"2026-01-06T18:41:16","slug":"invasive-toads-are-close-to-but-absent-from-komodo-national-park-a-conservation-concern","status":"publish","type":"post","link":"https:\/\/komodopadartour.com\/ar\/2026\/01\/06\/invasive-toads-are-close-to-but-absent-from-komodo-national-park-a-conservation-concern\/","title":{"rendered":"\u0627\u0644\u0636\u0641\u0627\u062f\u0639 \u0627\u0644\u063a\u0627\u0632\u064a\u0629 \u0642\u0631\u064a\u0628\u0629 \u0645\u0646 \u062d\u062f\u064a\u0642\u0629 \u0643\u0648\u0645\u0648\u062f\u0648 \u0627\u0644\u0648\u0637\u0646\u064a\u0629 \u0648\u0644\u0643\u0646\u0647\u0627 \u063a\u0627\u0626\u0628\u0629 \u0639\u0646\u0647\u0627 - \u0645\u0635\u062f\u0631 \u0642\u0644\u0642 \u0628\u064a\u0626\u064a"},"content":{"rendered":"
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Invasive Toads Are Close to but Absent from \u0645\u0646\u062a\u0632\u0647 \u0643\u0648\u0645\u0648\u062f\u0648 \u0627\u0644\u0648\u0637\u0646\u064a<\/a> \u2014 A Conservation Concern<\/figcaption><\/figure>\n\n\n\n

Komodo National Park \u2014 famed for its \u062a\u0646\u064a\u0646 \u0643\u0648\u0645\u0648\u062f\u0648<\/strong><\/a> (Varanus komodoensis<\/em>)<\/strong> and unique wildlife \u2014 lies in the Wallacea region of Indonesia, an area rich in endemic species but vulnerable to biological invasions<\/strong>. Recent research has investigated the potential threat posed by an invasive amphibian species, the Asian common toad (Duttaphrynus melanostictus<\/em>)<\/strong>, and whether it has reached the park itself. <\/p>\n\n\n\n

The Threat of Invasive Species<\/strong><\/h3>\n\n\n\n

Invasive species are widely recognized as one of the major risks to biodiversity worldwide. They can disrupt ecological balance, compete with native species for resources, and sometimes introduce toxins or diseases that local wildlife are not adapted to handle. For Komodo National Park, the presence of an introduced toad is particularly concerning because of the potential impacts on the \u062a\u0646\u064a\u0646 \u0643\u0648\u0645\u0648\u062f\u0648<\/strong> <\/a>\u2014 an apex predator with a restricted distribution. <\/p>\n\n\n\n

\u0627\u0644 Asian common toad (Duttaphrynus melanostictus<\/em>)<\/strong> is native to parts of mainland Asia and has spread across many Indonesian islands, likely through human-mediated transport. Members of its family (Bufonidae<\/em>) possess parotoid glands<\/strong> that release toxic substances which can poison predators that have no resistance to them. Similar invasive toads (like the cane toad in Australia) have been shown to cause declines in native predator populations when introduced. <\/p>\n\n\n\n

Surveying Amphibians in \u0645\u0646\u062a\u0632\u0647 \u0643\u0648\u0645\u0648\u062f\u0648 \u0627\u0644\u0648\u0637\u0646\u064a<\/a><\/strong><\/h3>\n\n\n\n

To determine whether D. melanostictus<\/em> had reached the park, researchers conducted a comprehensive amphibian survey<\/strong> across Komodo National Park islands (Komodo and Rinca), parts of nearby Flores (Labuan Bajo and Cumbi Village), and Sumbawa (Sape) between February and April 2018. Using visual encounter methods, they documented amphibian species richness and specifically searched for the invasive toad. <\/p>\n\n\n\n

The survey recorded seven amphibian species overall, but only two species were found within Komodo National Park itself<\/strong>. Importantly, no Asian common toads were detected<\/strong> on the park\u2019s islands or on Flores, although they were abundant in Sape (Sumbawa Island)<\/strong>, just west of Komodo\u2019s range. <\/p>\n\n\n\n

Why Their Absence Matters<\/strong><\/h3>\n\n\n\n

The absence of D. melanostictus<\/em> in Komodo National Park is encouraging, but its close presence on nearby islands \u2014 with high abundance in Sape \u2014 suggests a real risk of future invasion<\/strong>. If these toads were to become established in the park or on Flores, their toxins could pose a serious risk to native predators, including Komodo dragons, which have no evolutionary history with such poisonous prey. This could potentially lead to poisoning events or broader ecological changes. <\/p>\n\n\n\n

Addressing the Threat<\/strong><\/h3>\n\n\n\n

Researchers and conservationists recommend proactive measures to prevent the spread of the invasive toad<\/strong> into Komodo National Park:<\/p>\n\n\n\n