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Non-Specific Immune Response and Growth Performance of Clarias gariepinus (Burchell, 1822) Feeded with Moringa oleifera Leaf Flour Suplementation (Lamk, 1785) Nainggolan, Tio Naomi; Harpeni, Esti; Santoso, Limin
Jurnal Perikanan dan Kelautan Vol. 26 No. 2 (2021): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Sangkuriang catfish (Clarias gariepinus) is a cultivated species favored by Indonesian and has great potential for development. However, the obstacle to the success of catfish cultivation is a disease. One alternative to overcome this problem is by giving immunostimulants from natural ingredients. The purpose of this study was to test the effectiveness of feeding with moringa leaf powder on non-specific immunity and growth performance of sangkuriang catfish. The study used a completely randomized design (CRD) with 4 treatments (100% commercial feed, commercial feed with 1.5% Moringa leaf supplementation, commercial feed with 3% Moringa leaf supplementation, and commercial feed with Moringa leaf supplementation 4.5%, and 3 replications. The results showed that the commercial feed with 4.5% moringa leaf supplementation gave the best results for total erythrocytes of 5.97x104 cells/mm3 and MCV of 92.10 fl, and increased the absolute weight growth of 46.42 g. However, it did not show a significant effect on total erythrocytes, hemoglobin, hematocrit, MCHC, MCH, MCV, total leukocytes, leukocyte differentials, phagocytic activity, phagocytosis index, absolute weight growth survival rate, and the value of the feed convention ratio (FCR).

Isolation and Screening of Amylolytic and Proteolytic Thermophilic Bacteria from Way Panas Hot Spring, Kalianda, South Lampung Mahestri, Laras; Harpeni, Esti; Setyawan, Agus
Jurnal Perikanan dan Kelautan Vol. 26 No. 3 (2021): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Amylolytic and proteolitic activity from thermophilic bacteria have been observed from the Way Panas hot springs, Kalianda, South Lampung. This study aims to isolate and screen amylase and protease enzyme-producing thermophilic bacteria and their potential in fisheries. A total of 8 bacterial isolates were examined from the Way Panas hot spring, Kalianda. Each was cultured on selective medium for amylase and protease production. The results showed that 4 bacterial isolates were able to hydrolyze starch (A.WP.50.1, A.WP.50.1, A.WP.50.3, and A.WP.50.4) were able hydrolyze starch and no bacterial isolates had hydrolysis activity against protein. The highest activity of amylolitic was achieved by A.WP.50.4 bacteria isolate. Based on the phenotype, biochemistry assay, and 16s rDNA sequencing, the A.WP.50.4 bacteria isolate have high similarity and identified as Bacillus cereus.

SYMBIOTIC ASSOCIATIONS IN MARINE SPONGES Harpeni, Esti
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p%p

The characteristics of the sponge structure, homogenous, flexible, and simple, but pervaded by canals and their ability for filter-feeding, may facilitate development of intimate associations with other organisms. This study reviewed the described symbiotic associations between marine sponges and other organisms as well as among marine sponge species. Associations in marine sponges show a wide range of relationships with their symbionts. These can range from mutually beneficial, to commensal, to parasitic or pathogenic. Sponge species also vary in the types of symbionts they host from facultative sponge associates that also live in other sheltered habitats, to obligate sponge associates that occupy a variety of sponge species, to obligate specialists on particular sponge species. The associations can cause the morphological alteration of the symbionts and other adaptive behaviour. Observations of new and unique associations were also discussed.

Non-Specific Immune Response and Growth Performance of Clarias gariepinus (Burchell, 1822) Feeded with Moringa oleifera Leaf Flour Suplementation (Lamk, 1785) Nainggolan, Tio Naomi; Harpeni, Esti; Santoso, Limin
Jurnal Perikanan dan Kelautan Vol. 26 No. 2 (2021): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Sangkuriang catfish (Clarias gariepinus) is a cultivated species favored by Indonesian and has great potential for development. However, the obstacle to the success of catfish cultivation is a disease. One alternative to overcome this problem is by giving immunostimulants from natural ingredients. The purpose of this study was to test the effectiveness of feeding with moringa leaf powder on non-specific immunity and growth performance of sangkuriang catfish. The study used a completely randomized design (CRD) with 4 treatments (100% commercial feed, commercial feed with 1.5% Moringa leaf supplementation, commercial feed with 3% Moringa leaf supplementation, and commercial feed with Moringa leaf supplementation 4.5%, and 3 replications. The results showed that the commercial feed with 4.5% moringa leaf supplementation gave the best results for total erythrocytes of 5.97x104 cells/mm3 and MCV of 92.10 fl, and increased the absolute weight growth of 46.42 g. However, it did not show a significant effect on total erythrocytes, hemoglobin, hematocrit, MCHC, MCH, MCV, total leukocytes, leukocyte differentials, phagocytic activity, phagocytosis index, absolute weight growth survival rate, and the value of the feed convention ratio (FCR).

Isolation and Screening of Amylolytic and Proteolytic Thermophilic Bacteria from Way Panas Hot Spring, Kalianda, South Lampung Mahestri, Laras; Harpeni, Esti; Setyawan, Agus
Jurnal Perikanan dan Kelautan Vol. 26 No. 3 (2021): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Amylolytic and proteolitic activity from thermophilic bacteria have been observed from the Way Panas hot springs, Kalianda, South Lampung. This study aims to isolate and screen amylase and protease enzyme-producing thermophilic bacteria and their potential in fisheries. A total of 8 bacterial isolates were examined from the Way Panas hot spring, Kalianda. Each was cultured on selective medium for amylase and protease production. The results showed that 4 bacterial isolates were able to hydrolyze starch (A.WP.50.1, A.WP.50.1, A.WP.50.3, and A.WP.50.4) were able hydrolyze starch and no bacterial isolates had hydrolysis activity against protein. The highest activity of amylolitic was achieved by A.WP.50.4 bacteria isolate. Based on the phenotype, biochemistry assay, and 16s rDNA sequencing, the A.WP.50.4 bacteria isolate have high similarity and identified as Bacillus cereus.

SYMBIOTIC ASSOCIATIONS IN MARINE SPONGES Harpeni, Esti
AQUASAINS Vol. 13 No. 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p%p

The characteristics of the sponge structure, homogenous, flexible, and simple, but pervaded by canals and their ability for filter-feeding, may facilitate development of intimate associations with other organisms. This study reviewed the described symbiotic associations between marine sponges and other organisms as well as among marine sponge species. Associations in marine sponges show a wide range of relationships with their symbionts. These can range from mutually beneficial, to commensal, to parasitic or pathogenic. Sponge species also vary in the types of symbionts they host from facultative sponge associates that also live in other sheltered habitats, to obligate sponge associates that occupy a variety of sponge species, to obligate specialists on particular sponge species. The associations can cause the morphological alteration of the symbionts and other adaptive behaviour. Observations of new and unique associations were also discussed.

Screening of Endosymbion Fungus Potential on The Stem of Avicennia sp. from Shore of Bandar Lampung City as an Antibacterial Susanti, Oktora; Harpeni, Esti; Efendi, Eko; Karima, Nisa; Muamar, Aslam
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.7141

Mangroves scattered in the shore of Lampung have considerable potential to be used as medicines and antibiotics, because the distribution of various mangroves on almost every shore of Lampung is overgrown with various mangrove plants. Mangroves have a symbiotic relationship with microbes, so that mangrove endosymbion microbes generally have the same bioactive compounds as their hosts. Mangrove Avicennia sp. is one of the mangrove species that has the ability to be antibacterial. Mangrove endosymbion microbes can also have the ability to inhibit antibacterial pathogens that cause disease. Diseases whose cases are found in the community, one of which is caused by Staphylococcus aureus bacteria and Escherichia coli. The purpose of this study is to screen the potential isolate of the endosymbion fungus Avicennia sp. as an antibacterial against S.aureus and E.coli bacteria. Isolation results of Avicennia sp. 12 isolates of endosymbion fungi were obtained that have inhibitory activity against S. aureus and E. coli. and 5 isolates (WBJ-R01, WBJ-R04, WBJ-R05, WBJ-R09, and WBJ-R12) that had the best inhibitory zone activity. Extracts from the five endosymbion fungi isolates have inhibitory zones in both pathogenic bacteria. It is proven that the five extracts at the highest concentration are in a strong inhibition zone. WBJ-R01, WBJ-R04, WBJ-R05, WBJ-R09, and WBJ-R12 isolates had inhibition zones of 11.4 mm, 11 mm, 11.73 mm, 12.3 mm, and 13.23 mm, against S.aureus bacteria respectively. and against E.coli bacteria 14.03 mm, 10.3 mm, 13.13 mm, 9.73 mm, and 6.5 mm.

ANALISIS UJI TANTANG UDANG VANAME (Litopenaeus vannamei) YANG DIBERI BAKTERI PROBIOTIK Bacillus sp. D2.2 DAN EKSTRAK UBI JALAR SEBAGAI SINBIOTIK Wijayanti, Arlin; Dwinitasari, Nandya; Febriyani, Uun; Harpeni, Esti; Wardiyanto, Wardiyanto
Biospecies Vol. 11 No. 2 (2018): Juli 2018
Publisher : Universitas Jambi

In vaname shrimp cultivation system, bacterial disease is a problem that often arises that mainly caused by the bacteria Vibrio sp. Sinbiotic application is one way to prevent disruption of the disease. Sinbiotic is nutritional supplements that made from the combination of probiotic and prebiotic that can provide beneficial effects to the host. This research uses a local sinbiotic of probiotic bacteria Bacillus sp. D2.2, which comes from the traditional ponds in the Mulyosari village, Pasir Sakti district, Lampung Timur Regency, Lampung. Prebiotic that used in this research made from meal extracts of purple sweet potato that had the best capability to support the growth of bacteria probiotic Bacillus sp. D2.2. This research aims to know the effectivity of sinbiotic against the infection of vibriosis againts to vaname shrimp by doing analysis of clinical symptoms and tissue damage post test challenge using bacteria Vibrio harveyi. The results showed that addition sinbiotic gave effect to SR 6,25 %, MTD 13,80 hour, and clinical symptoms and then tissue damage is lower than without the feeding of sinbiotik.

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