BULUS Amyda cartilaginea (Boddaert, 1770): STUDI PERILAKU, POPULASI DAN PERSEBARAN DI DESA SIDOREJO, LENDAH, KULON PROGO, DAERAH ISTIMEWA YOGYAKARTA

Maria Donna Miranda, Donan Satria Yudha, S.Si., M.Sc.

2025 | Skripsi | BIOLOGI

Amyda cartilaginea adalah spesies labi-labi yang banyak ditemukan di sungai dan rawa. Namun, data perilaku, populasi, dan persebaran di Daerah Istimewa Yogyakarta (DIY), khususnya di Desa Sidorejo, Lendah, Kulon Progo, masih terbatas. Penelitian ini bertujuan untuk: (1) membandingkan jumlah individu Amyda cartilaginea pada musim hujan dan kering di Sungai Kedung Ingas serta Sungai Sidorejo; (2) mengetahui pola persebaran Amyda cartilaginea di Sungai Kedung Ingas dan Sungai Sidorejo; (3) mengetahui densitas populasi Amyda cartilaginea dan membandingkan dengan penelitian Muslim di tahun 2020; (4) mencari pengaruh dan korelasi parameter fisikokimia terhadap jumlah dan persebaran Amyda cartilaginea; (5) mengetahui pengaruh jumlah individu fase hidup Amyda cartilaginea terhadap keberlangsungan populasinya. Metode VES (Visual Encounter Survey) dengan pendekatan purposive sampling digunakan sejak Desember 2024, dan data dianalisis menggunakan Microsoft Excel, QGIS (Nearest Neighbour Index) dan SPSS. Hasil menunjukkan Amyda cartilaginea lebih banyak ditemukan saat musim hujan dan paling banyak di hulu sungai. Densitas populasi lebih tinggi dibandingkan penelitian sebelumnya, kemungkinan karena kesadaran masyarakat mengenai pentingnya Amyda cartilaginea sudah meningkat. Pola persebaran keseluruhan Sungai Kedung Ingas adalah acak, sedangkan Sungai Sidorejo seragam. Korelasi antara parameter fisikokimia dan jumlah individu umumnya tidak signifikan, namun terdapat kecenderungan hubungan negatif dengan suhu dan positif dengan kelembaban serta pH tanah. Struktur populasi di Sungai Kedung Ingas lebih stabil karena didominasi oleh individu juvenil dan dewasa.

Amyda cartilaginea is a species of softshell turtle found in rivers and swamps. However, data on its behavior, population, and distribution in the Special Region of Yogyakarta (DIY), particularly in Sidorejo Village, Lendah, Kulon Progo, remain limited. This study aims to: (1) compare the number of Amyda cartilaginea during rain and dry seasons in the Kedung Ingas and Sidorejo Rivers; (2) identify the distribution pattern of Amyda cartilaginea in both rivers; (3) determine population density of Amyda cartilaginea and compare with Muslim’s 2020 study; (4) examine the influence and correlation between physicochemical parameters towards the number and distribution of Amyda cartilaginea; (5) assess how the proportion of life stages affects the species’ population sustainability. The VES (Visual Encounter Survey) method with a purposive sampling approach was conducted from December 2024, and data was analyzed using Microsoft Excel, QGIS (Nearest Neighbour Index), and SPSS. Results showed that Amyda cartilaginea was more frequently found during rain season and most commonly found upstream. Population density was higher compared to previous studies, possibly due to increased community awareness of the species' ecological importance. The overall distribution pattern in Kedung Ingas River was random, while it was uniform in the Sidorejo River. Correlation between physicochemical parameters and the number of individuals was generally not significant, although there was a tendency toward a negative correlation with temperature and a positive one with humidity and soil pH. The population structure in the Kedung Ingas River was more stable, as it was dominated by juvenile and adult individuals.

Kata Kunci : Amyda cartilaginea, Desa Sidorejo, fase hidup, persebaran, populasi