Effect of Temperature on the Growth of Marine Diatom, Chaetoceros simplex (Ostenfeld, 1901) with Different Nitrate: Silicate Concentrations

Hemalatha, A.; Karthikeyan, Panneerselvam; Manimaran, K; Anantharaman, P.; Sampathkumar, P.

doi:10.1016/s2221-1691(12)60501-2

Cited by 8 publications

(9 citation statements)

References 36 publications

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“…The abundance of diatoms in the area may be associated with the high organic and nutrient loading in Manila Bay that could contribute to the increased frequency of microalgal blooms (Jacinto et al 2006). Thornton and Thake (1998) found out that increasing temperature enhanced aggregation of S. costatum; whereas, certain species of Chaetoceros (e.g., C. gracilis, C. simplex, and C. wighamii) recorded optimal growth at higher temperature and salinity (Mortensen et al 1988;Araujo and Garcia 2005;Hemalatha et al 2012). In contrast, S. costatum population in South Harbour declined with increasing surface water temperatures from July to August in 2012 with sea surface temperature from 28°-31°C respectively and further dropped during the months of April and May in 2013 coinciding with 29°-33°C sea surface temperatures.…”

Section: Discussionmentioning

confidence: 99%

Phytoplankton and Bacterial Communities in South Harbour, Manila Bay, Philippines

Azanza

Austero

Dungca

et al. 2018

AJSTD

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In line with the ASEAN-India project “Extent of Transfer of Alien Invasive Organisms in South/Southeast Asia via Shipping”, phytoplankton and bacterial communities in the waters off South Harbour, Manila Bay were investigated. Sampling was done in July and August 2012 and in April and May 2013. A total of 67 phytoplankton species including 29 diatoms and 38 dinoflagellates were identified. Potentially toxic Pseudo-nitzschia spp. were among the diatoms found as well as dinoflagellates Alexandrium spp., and Gymnodinium spp. The diatom Skeletonema costatum appeared to be the dominant species in July and August 2012, whereas Chaetoceros spp. constituted over 85% of the total phytoplankton assemblage in April and May 2013. Mean bacterialabundance ranged from 9.53 x 102–3.18 x 105 cells/mL in July 2012. In addition, 93 bacterial isolates were identified using 16S rDNA, several of which belonged to the following phyla: Actinobacteria, Bacteriodetes, Firmicutes, and Proteobacteria; whereas, others were determined as uncultured bacterial clones. These results will serve as a valuable baseline for future studies on phytoplankton and bacterial community structure in Manila Bay.

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Section: Discussionmentioning

confidence: 99%

Phytoplankton and Bacterial Communities in South Harbour, Manila Bay, Philippines

Azanza

Austero

Dungca

et al. 2018

AJSTD

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“…Hence, Bacillariophyceae density amidst this season was totaled to 5.458 x 10 6 cell.L -1 compared to 5.059 x 10 6 cell.L -1 during west monsoon season. Specifically, algae from Chaetoceros genus can reach its maximum growth rate under high temperature (Spilling et al 2015) and proportional to nutrient concentration (Hemalatha et al 2012). Therefore, Chaetoceros density experienced remarkable increase from west monsoon season to first transition season (Figures 2 and 3).…”

Section: Relationship Analysis Of Environmental Factors and Potentialmentioning

confidence: 96%

Environmental factors and seasonal effect on the potential harmful algae presence at Ambon Bay, Indonesia

et al. 2020

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Abstract. Mahmudi M, Lusiana ED, Herawati EY, Serihollo LG. 2020. Environmental factors and seasonal effects on the potential harmful algae presence at Ambon Bay, Indonesia. Biodiversitas 21: 3101-3107. Marine and coastal areas are susceptive to harmful algae presence which can lead to Harmful Algae Blooms (HABs). Major drivers for this event are climate change, domestic and industrial activities. These alter the environmental condition in marine ecosystems which caused the shift of phytoplankton community. This study aims to analyze the environmental factors affecting the harmful algae occurrence in Ambon Bay as well as the seasonal change during west monsoon and first transition in regards to this issue. There were six environmental variables accounted in this research which measured in situ and ex-situ. The results showed that there were three algae divisions that formed the phytoplankton structure in Ambon Bay, namely Bacillariophyceae, Dinophyceae, and Cyanophyceae. These divisions have been reported as the cause of previous HABs in the area. Furthermore, algae density during first transition season was higher than during west monsoon season, but the composition of phytoplankton community was stable in which dominated by harmful algae such as Chaetoceros, Skeletonema, Nitzschia, Ceratium, Pyrodinium, Dinophysis, Alexandrium, and Trichodesmium. Meanwhile, based on Canonical Correspondence Analysis (CCA), temperature and nutrients were the main factors that highly associated with the presence and abundance of harmful.

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“…Hasil penelitian Arifah (2014) menyatakan, semakin rendah suhu maka semakin tinggi kandungan lipid yang dimiliki mikroalga, namun bila semakin tinggi suhu maka laju pertumbuhan dan biomassa mikroalga semakin tinggi dan menyebabkan fase kematian terjadi semakin cepat. Hasil penelitian lainnya yaitu Endrawati dan Riniatsih (2013) menunjukkan bahwa kepadatan tertinggi Nannochloropsis oculata sebesar 81,9 mg/ml terdapat pada suhu 28 0 C, sedangkan kadar total lipid tertinggi yaitu 52,62 % pada suhu 33 0 C. Hasil uji konsentrasi klorofil-a, protein dan karbohidrat pada Cheatoceros simplex mengindikasikan bahwa selain sensitif terhadap suhu, pertumbuhan mikroalga juga dipengaruhi oleh konsentrasi nitrat dan silikat dimana diperoleh konsentrasi klorofil-a tertinggi yaitu pada suhu 20 0 C (1,57±0,05 pg/sel) dengan konsentrasi Nitrat [NO3 -] yaitu 2205 μM dan konsentrasi Silikat [SiO3 2-] yaitu 265 μM, kadar protein dan karbohidrat tertinggi didapatkan pada suhu 25 0 C yaitu berturut-turut 4,48±0,17 pg/sel dan 0,78±0,03 pg/sel (Hemalatha et al, 2012). Kandungan pigmen klorofil c1 dan c2 pada C. gracilis lebih tinggi pada suhu 25 0 C (138±7 μg m/L) daripada suhu 30 0 C (80±5 μg m/L), sedangkan diadinoxanthin mengalami hal sebaliknya (Nagao et al, 2020).…”

Section: Pendahuluanunclassified

“…Gambar 2. Kepadatan Sel C. gracilis yang dikultur pada pada media dengan suhu yang berbeda Suhu merupakan salah satu faktor lingkungan yang paling berpengaruh pada pertumbuhan mikroalga, termasuk C. gracilis (Renaud et al, 2001;Likun et al, 2014;Hemalatha et al, 2012;Rai and Rajashekhar, 2014). Seluruh inokulum C. gracilis dengan suhu yang berbeda-beda memasuki fase lag atau adaptasi untuk proses menyesuaikan diri akibat adanya berbedaan kodisi lingkungan.…”

Section: Pertumbuhan Kultur Mikroalga C Gracilisunclassified

“…Pertumbuhan diatom dipengaruhi oleh berbagai faktor lingkungan seperti suhu, salinitas, CO2 dan nutrisi (Kawaroe et al, 2010). Peningkatan suhu bisa menyebabkan pertumbuhan yang cepat namun menyebabkan berkurangnya waktu generasi kultur mikroalga (Hemalatha et al, 2012). Adenan et al, (2013) menyatakan peningkatan suhu yang terlalu tinggi memicu pembelahan sel lebih cepat, karena perubahan aktivitas metabolisme sel sebagai respon terhadap tekanan lingkungan, tetapi waktu hidupnya menjadi lebih singkat.…”

Section: Pertumbuhan Kultur Mikroalga C Gracilisunclassified

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Respon Pertumbuhan dan Konsentrasi Klorofil–a pada Kultur Mikroalga Chaetoceros gracilis terhadap Perbedaan Suhu Kultur

Adriyanti

Arthana

Widiastuti

2021

jmrt

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Microalgae Chaetoceros gracilis is widely used in aquaculture. Its culture highly depends on environmental factors, particularly temperature. This study aimed to examine the growth rate and its growth trend of C. gracilis, also chlorophyll-a concentration at different temperature. cultures were incubated at 25, 30 dan 340C for seven days using Na media with three replicates. Cell density was counted every day using a hemocytometer, whereas the concentration of chlorophyll-a was measured in spectrophotometry method. The differences in growth rates and chlorophyll-a concentration at different temperatures were statistically analyzed with One-Way ANOVA. The difference variables were further tested with the Tukey HSD test. The trend of the growth and duration of C. gracilis at 25 and 30 0C were similar, with the lag phase (three days), logarithmic (two days), stationary (one day), and declination (one day), in contrast at 34 0C that had lower duration and missed the stationary phase. The growth rates of microalgae C. gracilis was insignificantly differences at the temperature of 25 and 30 0C (0.7±0.05 cell/ml/day), but significantly lower at 340C (0.28±0.03 cell/ml/day). The chlorophyll-a concentrations at the temperature of 25 and 30 0C were not significantly different (0.37±0.05 and 0.39±0.03 mg/l), while the chlorophyll-a concentration at 34 0C was significantly lower (0.26±0.04 mg/l). This result indicates the high temperature (34 0C) inhibited the metabolism of C. gracilis as shown by doubling times that slower (2.5 day) than the temperature at 25 and 30 0C. It is concluded that the optimum temperatures for the C. gracilis were 25 and 30 0C, where as 340C was the inhibited temperature.

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Effect of Temperature on the Growth of Marine Diatom, Chaetoceros simplex (Ostenfeld, 1901) with Different Nitrate: Silicate Concentrations

Cited by 8 publications

References 36 publications

Phytoplankton and Bacterial Communities in South Harbour, Manila Bay, Philippines

Phytoplankton and Bacterial Communities in South Harbour, Manila Bay, Philippines

Environmental factors and seasonal effect on the potential harmful algae presence at Ambon Bay, Indonesia

Respon Pertumbuhan dan Konsentrasi Klorofil–a pada Kultur Mikroalga Chaetoceros gracilis terhadap Perbedaan Suhu Kultur

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