Identifikasi Jenis Protozoa di Pulau Tidung Kecil Bagian Selatan

Nida Nisrina, Ardiansyah Ardiansyah, Marsya Yunita, Keenan Garcianov Lasamahu, Hanum Isfaeni, Ratna Komala, Rosi Fitri Ramadhani

Abstract


Perairan tropis memiliki keanekaragaman hayati yang sangat tinggi, termasuk protozoa yang berperan penting dalam menjaga keseimbangan ekosistem dan siklus biogeokimia. Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis protozoa serta menggambarkan ciri khas morfologinya di perairan Pulau Tidung Kecil bagian selatan Kepulauan Seribu. Penelitian dilakukan pada tanggal 24–26 Oktober 2025 dengan metode deskriptif kualitatif menggunakan pengambilan sampel air laut secara transek di 2 stasiun yang berjarak 60 m dari bibir pantai. Pengamatan dilakukan dengan mikroskop cahaya pada perbesaran 100x-400x untuk menentukan morfologi dan identifikasi taksonomi. Hasil penelitian menunjukkan adanya tiga spesies utama, yaitu Difflugia sp., Spirostomum sp., dan Arcella sp. Diflugia sp. memiliki cangkang berbentuk lonjong menyerupai vas dengan pseudopodia sebagai alat gerak. Spirostomum sp. memiliki tubuh berbentuk silinder yang panjang dan lentur, serta mampu berkontraksi dengan cepat, sedangkan Arcella sp. memiliki cangkang berbentuk hemisferik dengan bukaan sentral dan permukaan berpori. Kondisi lingkungan di lokasi penelitian cukup ekstrem, dengan suhu 3,2–3,3 °C, salinitas 3–4 ppt, dan pH sekitar 5. Namun, spesies ketiga ini mampu beradaptasi dan bertahan hidup. Temuan ini menegaskan bahwa protozoa di Perairan Pulau Tidung Kecil berperan penting dalam keseimbangan ekosistem pesisir dan berpotensi sebagai bioindikator kualitas perairan. Penelitian lanjutan dengan pendekatan molekuler disarankan untuk memperkuat identifikasi spesies.   

Keywords


Protozoa, morfologi, Pulau Tidung

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References


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DOI: https://doi.org/10.35308/jlik.v8i2.14004

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