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Journal : BIOTROPIC

Karakteristik Bakteri Pendegradasi Bahan Pangan Asal Saluran Pencernaan Kecoa Amerika (Periplaneta americana) dari Pasar Tradisional Dwiana Muflihah Yulianti; Arif Rahman Hikam; Trisnowati Budi Ambarningrum; Taruna Dwi Satwika; Dyah Fitri Kusharyati; Hilmiyah Al'alawiyah
Biotropic : The Journal of Tropical Biology Vol. 7 No. 1 (2023): Biotropic, Volume 7 Nomor 1, 2023
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/biotropic.v7i1.1662

Abstract

American cockroach (Periplaneta americana) is one of the most common pests found in houses, apartments, and public facilities such as markets. As vector insects, cockroaches have symbiosis with microorganisms. Some of these microorganisms can live in cockroaches' cuticles and digestive tracts. Besides being able to pose a danger to human health, the microbes in cockroach bodies also have the potential to cause food damage. This study aimed to determine the diversity of microorganisms originating from the digestive tract of the American cockroach and their potential to cause food spoilage. The research was conducted in several stages: sampling cockroaches at a traditional market, isolating bacteria from the digestive tract of cockroaches, qualitatively testing amylolytic, proteolytic, and lipolytic potentials, and characterizing bacterial isolate by morphologically and biochemically character. The results showed that there were 26 isolates of bacteria isolated from the digestive tract of American cockroaches from the market, 62.96% of the isolates were found to have the ability to degrade protein, 37.04% of the isolates had the ability to degrade starch, and 40.74% of the total isolates can degrade fat. These isolates had various morphological and biochemical characteristics. Bacterial isolates derived from American cockroaches from traditional markets have the potential to degrade food.
Manipulasi Temperatur Terhadap Perkembangan Sex Ratio Black Shoulder Fly (Hermetia illucens) Trisno Haryanto; Nabila Putri Effendi; Trisnowati Budi Ambarningrum; Eko Setiyono; Hery Pratiknyo
Biotropic : The Journal of Tropical Biology Vol. 8 No. 1 (2024): Biotropic, Volume 8 Nomor 1, 2024
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/biotropic.v8i1.2063

Abstract

Temperature is one of the factors that influences the life cycle of Hermetia illucens. This research aimed to determine the effect of temperature differences stimulated at the larval stage on the sex ratio of H. illucens. Knowledge of the correct use of temperature can be used as a reference in cultivating H. illucens. The research design used a Completely Randomized Design (CRD) with temperature variations (27oC; 30oC : 36oC). The variables observed included the sex ratio of H. illucens. Data were analyzed using one way ANOVA at a significance level of 95%. The research results show that the optimal sex ratio for cultivation is at room temperature (24°-31°C), namely 55% females and 45% males. The 27°C temperature treatment had the highest number of female, 70.83%, while the number of male was the highes. found at a temperature of 30°C, 62.50%.