Respons Aktivitas Reproduktif Belangkas (Tachypleus gigas) Terhadap Perbedaan Suhu sebagai Dasar Pendekatan Konservasi Ex-Situ

Abstract

Belangkas (Tachypleus gigas) merupakan biota perairan pesisir yang memiliki peran ekologis penting namun saat ini berstatus Data Deficient sehingga informasi ekologi dan biologisnya masih terbatas. Perubahan suhu perairan akibat faktor antropogenik dan perubahan lingkungan dapat memengaruhi keberadaan dan aktivitas reproduktif belangkas. Penelitian ini bertujuan untuk menganalisis pengaruh perbedaan suhu pemeliharaan terhadap aktivitas reproduktif belangkas sebagai dasar pengembangan upaya konservasi ex-situ. Penelitian dilaksanakan pada bulan Februari-Maret 2026 di Laboratorium Biologi Mikro 1, Departemen Manajemen Sumberdaya Perairan, IPB University. Perlakuan terdiri atas tiga suhu pemeliharaan, yaitu (P1) 26°C, (P2) 28°C, dan (P3) 31°C. Hasil penelitian menunjukkan bahwa secara statistik tidak terdapat perbedaan signifikan antar perlakuan suhu terhadap aktivitas reproduktif, namun terdapat variasi respons, dengan suhu 28°C cenderung menunjukkan kemunculan indikator reproduktif yang lebih lengkap dibandingkan perlakuan lainnya

The horseshoe crab (Tachypleus gigas) is a coastal aquatic organism that plays an important ecological role. However, it is currently classified as Data Deficient, indicating that information regarding its ecology and biology is still limited. Changes in water temperature resulting from anthropogenic activities and environmental changes may affect the distribution and reproductive activity of horseshoe crabs. This study aimed to analyze the effect of different rearing temperatures on the reproductive activity of horseshoe crabs as a basis for developing ex-situ conservation efforts. The study was conducted from February to March 2026 at Microbiology Laboratory 1, Department of Aquatic Resources Management, IPB University. The treatments consisted of three rearing temperatures, (P1) 26°C, (P2) 28°C, and (P3) 31°C. The results showed that there were no significant differences among temperature treatments on reproductive activity. However, response variations were observed, with 28°C tending to exhibit more complete reproductive indicators than the other treatments