Density and Growth Rate of Nannochloropsis oculata with Different Photoperiods
Density and Growth of Nannochloropsis oculata
Abstract
Nannochloropsis oculata is a type of single-celled or eukaryotic phytoplankton belonging to the class Eustigmatophyceae. This type of microalgae is widely used as natural food for rotifers and fish larvae because it has a high nutritional content. Given this role, many species of Nannochloropsis oculata are cultivated by culture. The success of microalgae culture is influenced by growth factors such as light intensity, CO2, temperature, and nutrition. However, in the process problems often arise regarding the unstable growth of Nannochloropsis oculata. This is usually caused by factors that affect growth, such as light that is not optimal. Based on these problems, it is necessary to conduct research that aims to determine the growth rate of Nannochloropsis oculata with different irradiation treatments. The research method used was an experimental method with 4 treatments i.e., A (24L : 0D), B (12L : 12D), C (18L : 6D), and D (6L : 18D). The results showed that different light exposure period on the density of Nannochloropsis oculata microalgae had no significant effect on their growth rate. Even though the results of statistical tests of photoperiod administration did not affect the production of Nannochloropsis oculata microalgae cell density, the treatment with the dark phase resulted in better growth.
References
Bahua, H., Hendrawan, Y., Yulianingsih, R. 2015. Pengaruh Pemberian Auksin Sintetik Asam Naftalena Asetat Terhadap Pertumbuhan Mikroalga ( Nannochloropsis oculata). Jurnal Keteknikan Pertanian Tropis dan Biosistem, 3:179–186.
Bouterfas, R., Belkoura, M., Dauta, A. 2006. The effects of irradlance and photoperiod on the growth rate of three freshwater green algae isolated from a eutrophic lake. Limnetica 25:647–656. https://doi.org/10.23818/limn.25.43
CSIRO 2023. Cell counting using a Haemacytometer. ANACC Method and Materials. URL https://research.csiro.au/anaccmethods/phycological-techniques/biomass-estimation/haemacytometer/ (Accessed 12 February 2023).
Darsi, R., Supriadi, A., Sasanti, A. 2012. Karakteristik Kimiawi dan Potensi Pemanfaatan Dunaliella salina dan Nannochloropsis sp. Fishtech 14–25.
Fajar, D., Hasbi, R.M., Fitria, F., Setiani, U. 2019. Menghitung Jumlah Dan Kandungan Klorofil Mikroalga Nanochloropsis oculata. Bandung.
Isnansetyo A, K. 1995. Teknik Kultur Phytoplankton dan Zooplankton Pakan Alami untuk Pembenihan Organisme Laut. Kanisius, Yogyakarta.
Janssen, M., Kuijpers, T.C., Veldhoen, B., Ternbach, M.. 2013. Specific Growth Rate of Chlamydomonas reinhardtii and Chlorella sorokiniana Under Medium Duration Light/Dark Cycles: 13-87 s. Journal of Biotechnology 70:323–333.
Kaparapu, J. 2018. Application of Microalgae in Aquaculture. Phykos 48:21–26.
Mishbach, I., Permatasari, N.S., Zainuri, M., Kusumaningrum, H.P., Hastuti, D. 2022. Potensi Mikroalga Anabaena sp. Sebagai Bahan Utama Bioetanol Potential of the Microalgae Anabaena sp. as Bioetanol Feedstock. Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi 07:69–76. https://doi.org/10.33019/ekotonia.v7i1.3144
Nurhayati, T., Hermanto, B., Lutfi, D.M. 2013. Penggunaan Fotobioreaktor Sistem Batch Tersirkulasi terhadap Tingkat Pertumbuhan Mikroalga Chlorella vulgaris, Chlorella sp. dan Nannochloropsis oculata The Recirculation Batch System of Photobioreactor Against Growth Rate of Chlorella vulgaris Microalgae. Jurnal Keteknikan Pertanian Tropis dan Biosistem 1:249–257.
Sinaga, L., Putriningtias, A., Komariyah, S. 2021. Pengaruh Intensitas Cahaya Terhadap Pertumbuhan Nannochloropsis sp. Jurnal Akuakultura Universitas Teuku Umar 4:31–37.
Soewardi, K., Pratiwi, N., Messenreng 2005. Komposisi dan kelimpahan fitoplankton chrysophyta (Paheodactylum sp., Chaetoceros sp., dan Palvova sp.) pada berbagai tingkat kandungan unsur hara nitrogen, fosfor dan silikat. Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia 12:153–160.
Utami, N., Yuniarti, Haetami, K. 2012. Pertumbuhan Chlorella sp. yang Dikultur pada Perioditas Cahaya yang Berbeda. Jurnal Perikanan dan Kelautan, 3:237–244.
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