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All Journal Cognicia Indonesian Journal of Tropical Aquatic Journal Of Aquaculture Development and Environment Reswara: Jurnal Pengabdian Kepada Masyarakat
Hariyadi Hariyadi
Aquaculture Department, Universitas Muhammadiyah Malang
Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Economics, Econometrics & Finance Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Neuroscience Social Sciences

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Pengaruh psychological capital terhadap work engagement pada karyawan Muhammad Husain Hariyadi
Cognicia Vol. 7 No. 3 (2019): September
Publisher : Fakultas Psikologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/cognicia.v7i3.9200

Abstract

Work engagement is defined as positive emotions, which is characterized by vigor, dedication, and absorbtion. Psychological capital is positive psychological state of someone who has the following characteristics: self-efficacy, hope, optimism, and resiliency. The purpose of this study is to examine the effect of psychological capital towards work engagement on employee. This study used quantitative method and use ramdom sampling for taking samples. The research subjects were 122 employee. The measurements used were psychological capital question (PCQ) and utrecht work engagement scale (UWES). The data analysis technique uses linear regression methods. The results showed that there was a psychological capital effect on work engagement.
Distribution of Macrozoobentos In The Estuary of Seletreng River, Situbondo District Lukman Al Hakim; Hariyadi Hariyadi; Anis Zubaidah
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 3 No. 1 (2020): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v3i1.13253

Abstract

The estuary of the Seletreng river is located in the Banyuglugur area of the Situbondo Regency and is directly adjacent to the shrimp pond area. The estuary of this river is widely used by local residents to look for fish, crabs. The existence of shrimp ponds near the mouth of this river has made many changes to the surrounding ecosystem. The purpose of this study is to determine the diversity index of macrozoobenthos and to determine the uniformity of macrozoobenthos. This research was conducted in February-March 2019, located in the waters of the mouth of the Seletreng Banyuglugur river, Situbondo district. Uses 5 stations with 3 repetitions. The diversity index value at the five stations, namely at station 1 is at a value of 0.66 which is categorized as low, at station 2 it is 0.36, at station 3 is 0.53, at station 4 is 0.65, at station 5 is 0, 25 wherefrom all stations the diversity index value is less than 1 and categorized as low diversity. The uniformity index value at the five stations, namely at station 1 is at a value of 0.37, at station 2 is 0.18, at station 3 is 0.24, at station 4 is 0.40, at station 5 is 0.12 wherefrom all stations diversity index value less than 1 and categorized on uniformity depressed.
Effect of Time of LED Lights Irradiation on Aquascape performance Hariyadi Hariyadi; Aris Winaya; Mohammad Rofit Anggi Pratama
Journal of Aquaculture Development and Environment Vol 3, No 1 (2020): Journal Of Aquaculture Development And Environment
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to determine the length of time the irradiation of LED lights is suitable for aquascape ornamental plant performance, fish survival and water quality in aquascape media. This research was conducted on 22 April 28 May 2019 in collaboration with Fisheries Faculty of Agriculture, Animal Husbandry, University of Muhammadiyah Malang. This research uses 2 types of low light aquascape plants, namely Cryptocorine Wenti and Hidrocotyle Leucepala. This research is an experimental study using RAL with 4 treatments P0 (control 12 hours of indirect sunlight), P1 (LED lights with a long exposure time 8 hours), P2 (LED lights with a long exposure time of 10 hours), P3 (LED lights with a long exposure time of 12 hours) repeated 3 times. The parameters observed include aquascape ornamental plants such as plant length, stem diameter, wet weight. In the observation of water quality including temperature, pH, DO, dissolved CO2, and water hardness. In aquascape ornamental fish in the form of survival rate and growth of ornamental aquascape fish. Analyzed with ANOVA and continued with the Least Significant Difference Test on parameters that obtained significant differences.The results showed that the irradiation time of 10 hours had a significant influence on the stem diameter of the plant, namely P (0.037) <0.05 and the LSD test showed that the length of time the irradiation of 10 hours of LED lights had a significant effect on the diameter of the aquascape stem. In the length and wet weight of aquascape ornamental plants did not show significantly different results. On the parameters of water quality, growth and graduation of fish life also did not show significantly different results from the treatment of the long exposure time given.  
PELATIHAN AQUASCAPE UNTUK KELOMPOK PEMUDA DAN MAHASISWA MUHAMMADIYAH “AL MUFLIKHUN” JETAK LOR DESA MULYOAGUNG Hariyadi Hariyadi; Soni Andriawan
RESWARA: Jurnal Pengabdian Kepada Masyarakat Vol 3, No 2 (2022)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v3i2.1915

Abstract

Kelompok Pemuda dan Mahasiswa Muhammadiyah “Al Muflikhun” Jetak lor Desa Mulyoagung, adalah salah satu lembaga pendidikan yang berbasis pesantren di bawah binaan Ranting Muhammadiyah Jetak Lor desa Mulyo agung. Salah satu problem yang dihadapi Kelompok Pemuda dan Mahasiswa Muhammadiyah “Al Muflikhun” yaitu persoalan pendanaan untuk menggerakan organisasi dan peningkatan sumber daya manusia sebagai bekal kemandirian nanti. Kegiatan pengabdian pada masyarakat dilakukan untuk  meningkatkan kemampuan anggota kelompok Al Muflikhun di bidang perikanan melalui pelatihan aquascape, sehingga dapat menjadi peluang usaha untuk menyelesaikan permasalahan tersebut, di kota Malang, peminat dan pembeli aquascape masih jarang dijumpai, sehingga bisnis ini cukup menjanjikan. Kegiatan pelatihan aquascape kepada Kelompok Pemuda dan Mahasiswa Muhammadiyah “Al Muflikhun” membuka peluang kelompok untuk berwirausaha, sehingga bisa menopang pendanaan organisasinya. Selain itu kegiatan ini dapat digunakan sebagai cara untuk memperkenalkan kepada masyarakat tentang aquascape dan dunia perikanan pada umumnya
Analysis of microplastic abundance in Jerbung Shrimp (Fenneropenaeus Merguiensis) in wind sea water, Pasuruan East Java Province Meishela Dwi Lawidya; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.12358

Abstract

Plastic production worldwide has increased the development of synthetic polymers in the mid-20th century. When disposed of in the marine environment, plastic can harm organisms in the sea. The plastic degradation process is very slow, and thus microplastic has the potential to last for a very long period of time in the marine environment (Hidalgo, et al , 2012). This can threaten organisms in the waters to consume microplastic continuously. The purpose of this study is to determine the captured shrimp in the waters are microplastic contaminated and to find out what type of microplastic is found. Shrimp sampling is done for two months, located in the Lekok Sea Waters, Pasuruan Regency, East Java. Shrimp samples that have been taken are then analyzed in the fisheries laboratory by taking shrimp intestines and shrimp meat and then adding 10% KOH at a ratio of 1: 3 and roasted using a temperature of 60˚C for 24 hours for the destruction process. Based on microplastic analysis of the shrimp, it was found that the largest abundance of microplastic was dominated by microplastic fiber types compared to other types such as fragments and films. The abundance results show that at station 1 the average is 1 - 43 particles / gram, station 2 the average abundance value of microplastic is 2 - 31 particles / gram, station 3 the average abundance is 2 particles / gram - 31 particles / gram with very diverse sizes.
Analysis of production factors in semi-intensive Vannamei Shrimp (Litopenaeus Vannamei) farming in Tlanakan District, Pamekasan Regency, East Java. Hamisul Fuadi; Ganjar Adhywirawan Sutardjo; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.13373

Abstract

This study aimed to determine the production level of vannamei shrimp farming in Tlanakan District, Pamekasan Regency, East Java, and to analyze the factors affecting production in semi-intensive vannamei shrimp farming in the area. The study was conducted for 30 days in Tlanakan District, Pamekasan Regency, East Java. A survey method was employed, with data collected through direct observation, interviews, questionnaires, and field observations. Multiple linear regression was used for data analysis. The results showed that stocking density, feed, paddle wheels, and pond area were factors affecting vannamei shrimp production. Based on the ANOVA results, the significance value was 0.000 < 0.05, indicating that the variables had a significant effect on vannamei shrimp production. The calculated test value was also greater than the tabulated value (500.724 > 0.4973). Therefore, the independent variables in this study significantly affected the dependent variable, namely shrimp production.
Growth pattern and condition factor of fur shells (Anadara Pilula) in the waters of Kalirejo Village, Pasuruan, East Yovicta Anastasya Nadin; Dony Prasetyo; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.13438

Abstract

One species of the genus Anadara, used as an alternative food source, is the fur shells (Anadara pilula). The purpose of this research is to analyze the growth pattern, condition factor, and the condition index of fur shells (Anadara pilula) in the waters of Kalirejo village, Pasuruan East Java. This research was conducted for three months. Samples of fur shells used as much as 200 each month. Long relationship weight is analyzed using regression analysis. The results showed that the value of B < 3 indicated a negative alometry growth pattern. The value of condition factor in each month is 1.040026, 1.044695, and 1.070018926, this indicates that fur shells have a less flat body shape. As for the value of the condition index in each month, namely 0.334421, 0.512482, and 0.34303959, it indicates that the shell condition index feathers have a value of < 2.5 which means the fur shells belong to the skinny category. Condition factor values and condition indices can be influenced by factors such as Reproduki process, environmental condition, and food availability.
Improvement hatching and quality naupli through the provision of fresh feed different in female parent Shrimp Vaname ( Litopenaeus Vannamei ) a manuscript publication Wahyu Parmana Saputra; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6053

Abstract

Fresh natural feeds such as marine worms, squid, and oysters are rich sources of amino acids, proteins, and essential fatty acids, including docosahexaenoic acid (DHA), arachidonic acid (AA), and eicosapentaenoic acid (EPA), which are important for shrimp broodstock reproduction and seed production. Marine worms, in particular, contain a high protein content of approximately 56.29%. This study aims to evaluate the effects of different fresh feed types on the hatching rate (HR) of eggs and the quality of nauplii produced by female broodstock of Pacific white shrimp, Litopenaeus vannamei. The study employed an experimental method using a Completely Randomized Design (CRD). Five feeding treatments were tested with three replicates each: marine worms, squid, oysters, a combination of marine worms and oysters, and commercial pellet feed as the control. Data were analyzed using Analysis of Variance (ANOVA), followed by the Least Significant Difference (LSD) test to determine significant differences among treatments. The results showed that different types of fresh feed significantly affected egg hatching rate. The highest hatching rate was obtained from broodstock fed marine worms, reaching 80%, which corresponded to approximately 124,630 successfully hatched larvae. Fresh feed type also had a highly significant effect on nauplius quality, as indicated by developmental stage progression at 38 hours after hatching. Broodstock fed marine worms produced nauplii that reached an average developmental stage of Nauplius VI, indicating superior larval quality compared with the other treatments. Water quality parameters during broodstock maintenance remained within acceptable ranges, with temperature ranging from 29–31°C, dissolved oxygen from 5.7 mg L⁻¹, pH at 8.0, and salinity at 31 ppt. In conclusion, the intensive use of fresh marine worms as broodstock feed can significantly improve egg hatching rate and enhance nauplius quality in Pacific white shrimp (L. vannamei).
Effect of Salinity Differences for Growth Chlorella sp. on the Laboratory Scale Ais Anantama Wibowo; Hariyadi Hariyadi; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6608

Abstract

Chlorella sp. growth is dependent on environmental conditions. One of environmental condition affect the growth of Chlorella sp. is salinity. Salinity can affect the growth of Chlorella sp. because salinity affects the osmosis pressure on the cell wall of Chlorella sp. in the absorption of nutrients in the culture media. This study aims to determine the effect of different salinity on the growth of Chlorella sp. This study was conducted on laboratory scale using experimental methods. This research used Walne fertilizer on culture media were given Chlorella sp. as many as 100,000 cells / ml in every treatment. This study uses 4 treatments and 3 repetitions. The treatment in this study with salinity differences, namely salinity 15 ppt, 20 ppt, 25 ppt and 30 ppt. Chlorella sp. growth data every day obtained from the calculation of the sample Chlorella sp. use haemocytometer. The calculation data obtained is then analyzed using anava one factor data. The results showed that differences in salinity had no effect on the growth of Chlorella sp. The best salinity for the growth of Chlorella sp. is at 15 ppt salinity with the number of Chlorella sp cells. at peak growth as much as 340 × 104 cells / ml, followed by treatment B salinity 20 ppt as much as 339.33 × 104 cells / ml, then treatment D salinity 30 ppt as much as 270.58 × 104 cells / ml, and treatment C 25 salinity as much as 266.83 × 104 cells / ml. Salinity of 15 ppt, 20 ppt, 25 ppt, and 30 ppt can be used for cultivation Chlorella sp.
The effect of different concentrations of spirulina platensis in feed on color enhancement in Goldfish (Carassius Auratus) Sary Astuty Aceh; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.7313

Abstract

Body coloration is one of the most important quality attributes determining the ornamental value of goldfish (Carassius auratus). Since fish are unable to synthesize carotenoids, dietary supplementation with natural carotenoid sources is required to enhance pigmentation. Spirulina platensis is a microalga rich in carotenoids that has the potential to improve fish coloration. Therefore, this study aimed to evaluate the effect of different concentrations of Spirulina platensis meal in feed on the color enhancement of goldfish. The study employed an experimental method using a Completely Randomized Design (CRD) consisting of six treatments with three replications. The treatments included feed supplemented with 0% (control), 1%, 2%, 3%, 4%, and 5% Spirulina platensis meal. Fish were reared for four weeks, and color intensity of the head, body, fins, and tail was assessed periodically. Water quality parameters, including temperature, pH, and dissolved oxygen (DO), were also monitored throughout the experiment. Data were analyzed using analysis of variance (ANOVA) followed by Duncan’s multiple range test. The results showed that dietary supplementation with Spirulina platensis significantly affected body coloration but had no significant effect on the coloration of the head, fins, and tail. The highest body color intensity was observed in fish fed diets containing 3% Spirulina platensis, with an average color score of 56.55 ± 0.59, significantly higher than the control treatment. Water quality remained within suitable ranges for goldfish culture, with temperatures of 23–26°C, pH 7, and DO ranging from 6.7 to 9.9 mg/L. In conclusion, supplementation of 3% Spirulina platensis meal in feed effectively enhances the body coloration of goldfish and can be recommended as a natural pigment source in ornamental fish culture.
Co-Authors Ais Anantama Wibowo Anis Zubaidah Aris Winaya Dony Prasetyo Ganjar Adhywirawan Sutardjo Hamisul Fuadi Lukman Al Hakim Meishela Dwi Lawidya Mohammad Rofit Anggi Pratama Riza Rahman Hakim Sary Astuty Aceh Soni Andriawan Wahyu Parmana Saputra Yovicta Anastasya Nadin