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All Journal Journal on Education Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Novi Kristina Sinabutar
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Other

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Analisis Tingkat Kerukunan Antar Umat Beragama di Universitas Negeri Medan Mangido Nainggolan; Reza Artha Mevia Lumban Gaol; Novi Kristina Sinabutar; Bryan Hizkia; Dear Chio Sembiring; Widya Purnama Sitanggang; Maria Anatasyia Br. Siregar; Nella Juriska RajaGukguk; Yefta Darniati Sinaga
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6135

Abstract

This research aims to analyze the level of inter-religious harmony at the State University of Medan (UNIMED) and identify the factors that influence it. Using a qualitative approach, data is collected through in-depth interviews, participant observation, and document study involving students from various religious backgrounds at UNIMED. The data is thematically analyzed to identify patterns, categories, and main themes related to inter-religious harmony as well as the supporting and inhibiting factors. The research findings are expected to provide useful information and recommendations for UNIMED and other educational institutions in promoting harmony and tolerance among the academic community.
Biologi Reproduksi dan Faktor Kondisi Ikan Tiger Barb (Puntigrus partipentazona) di Perairan Danau Toba Novi Kristina Sinabutar; Agung Setia Batubara
Spizaetus: Jurnal Biologi dan Pendidikan Biologi Vol 7 No 2 (2026): Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi, FKIP, Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55241/spibio.v7i2.783

Abstract

The increasing occurrence of introduced fish species in Lake Toba highlights the need to investigate their reproductive biology and condition factor to understand their invasive potential. This study aimed to analyze the reproductive biology and condition factor of Tiger Barb (Puntigrus partipentazona) in Lake Toba. The study was conducted from January to March 2026 at three sampling stations in Pangururan District using a survey method with purposive sampling. Data were collected through fish trapping using fish traps, water quality measurements, morphological observations, reproductive biology assessments, and laboratory analysis of condition factor. The results showed that P. partipentazona exhibited gonadal maturity stages (GMS) I - IV. The female gonadosomatic index (GSI 0,046 – 0,090%) was higher than that of males (0,006 – 0,020%) at all stations. The length at first maturity was greater in females (47,58 – 56,89 mm) than in males (42,81 – 46,13 mm). Fecundity ranged from 194 - 361 eggs and was positively correlated with body length and weight. Sexual dimorphism was observed in body coloration and shape. The condition factor ranged from 0,97 – 1,32, indicating good physiological condition and a favorable environment for growth and reproduction. These findings indicate a high adaptive potential of P. partipentazona in the Lake Toba ecosystem.
Co-Authors Batubara, Agung Setia Bryan Hizkia Dear Chio Sembiring Mangido Nainggolan Maria Anatasyia Br. Siregar Nella Juriska RajaGukguk Reza Artha Mevia Lumban Gaol Widya Purnama Sitanggang Yefta Darniati Sinaga