DISTRIBUSI UKURAN, PERTUMBUHAN, DAN NISBAH KELAMIN PARI Glaucostegus typus (Bennett, 1830) YANG DIDARATKAN DI PELABUHAN PERIKANAN SAMUDERA NIZAM ZACHMAN JAKARTA

MUHAMMAD HILAL HAKIMUDDIN, . (2026) DISTRIBUSI UKURAN, PERTUMBUHAN, DAN NISBAH KELAMIN PARI Glaucostegus typus (Bennett, 1830) YANG DIDARATKAN DI PELABUHAN PERIKANAN SAMUDERA NIZAM ZACHMAN JAKARTA. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Beberapa tahun terakhir populasi pari kikir telah mengalami penurunan drastis sehingga perlu dilakukan penelitian untuk mengetahui kondisi populasi, distribusi ukuran, dan nisbah kelamin. Tujuan penelitian ini adalah untuk mengetahui distribusi ukuran, hubungan panjang berat, nisbah kelamin, serta tingkat kematangan kelamin jantan dari G. typus pada saat pendaratan. Penelitian dilaksanakan di Pelabuhan Perikanan Samudera Nizam Zachman Jakarta selama bulan Mei – Agustus 2025 menggunakan metode deskriptif dengan pengambilan sampel secara purposive sampling. Analisis secara deskriptif dilakukan dengan mengukur morfologi pari meliputi panjang standar, distribusi ukuran tubuh, dan tingkat kematangan kelamin jantan. Analisis statistik dilakukan dengan uji persamaan kuadrat yang dilinearkan dengan transformasi logaritma pada hubungan panjang-berat dan uji Chi-kuadrat (X2) untuk keseimbangan perbandingan populasi jantan dan betina. Hasil penelitian menunjukkan bahwa G. typus memiliki sebaran ukuran panjang dan berat yang terkonsentrasi pada kelas juvenil dengan pola pertumbuhan alometrik negatif, mengindikasikan pertumbuhan panjang lebih cepat dibandingkan pertambahan berat. Tingkat kematangan klasper individu jantan bervariasi dengan mayoritas pada ikan muda yang telah berkalsifikasi namun belum mencapai kematangan penuh. Hasil uji statistik mengkonfirmasi perbandingan jantan dan betina berbeda nyata (X2 = 82,14; p < 0,001), mengindikasikan ketidakseimbangan nisbah kelamin dalam populasi. ***** In recent years, the population of Giant Guitarfish has experienced a drastic decline, so research is needed to determine the population condition, size distribution, and sex ratio. The purpose of this study was to determine the size distribution, length-weight relationship, sex ratio, and males sexual maturity levels of G. typus at the time of landing. The study was conducted at the Nizam Zachman Ocean Fisheries Port, Jakarta, from May to August 2025 using a descriptive method with purposive sampling. Descriptive analysis was carried out by measuring the ray morphology including standard length, body size distribution, maturity level of male genital length. Statistical analysis was carried out using a quadratic equation test that was linearized with a logarithmic transformation for the length-weight relationship, and a Chi-square (X2) test for the balance of the male and female population ratio. The results of the study showed that G. typus had a distribution of length and weight that was concentrated in the juvenile class with a negative allometric growth pattern, indicating that length growth was faster than weight gain. The composition of the sex ratio shows a very significant dominance of female individuals. The maturity level of individual male claspers varies, with the majority of young fish having calcified but not yet reached full maturity. Statistical tests results confirmed a significantly different ratio of males to females (X2 = 82.14; p < 0.001), indicating an imbalance in the sex ratio within the population.

Item Type:	Thesis (Sarjana)
Additional Information:	1). Prof. Dr. Ratna Komala, M.Si. ; 2). Nurmila Anwar, S.Pi., M.Si.
Subjects:	Sains > Sains, Ilmu Pengetahuan Alam
Divisions:	FMIPA > S1 Biologi
Depositing User:	Muhammad Hilal Hakimuddin .
Date Deposited:	06 Feb 2026 09:27
Last Modified:	06 Feb 2026 09:27
URI:	http://repository.unj.ac.id/id/eprint/64626

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