Inter-annual variability of phytoplankton assemblage and Tetraspora gelatinosa bloom from anthropogenically affected harbour, Veraval, India

Hardikar, Revati; Haridevi, C K; Ram, Anirudh; Khandeparker, Rakhee; Amberkar, Ujwala; Chauhan, Meena

doi:10.1007/s10661-019-7192-y

Cited by 8 publications

(3 citation statements)

References 55 publications

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“…The concentration of NO 3 in Tanjung Mas ranges from 0.3947 mg/L -0.9386 mg/L, while nitrite 0.0058 mg/L -0.0338 mg/L, and ammonia 0.073 mg/L -1.568 mg/L. High concentrations of NO 3 and NO 2 in the seawaters can stimulate the growth and development of phytoplankton and become an indicator of fishpond fertility (Hardikar et al, 2019). NO 2 is also an indicator of decreasing N contamination because its formation comes from the oxidation of NH 4, which is toxic.…”

Section: Resultsmentioning

confidence: 99%

The Assessment of Water Compatibility of Adaptable Stick-Net Cage for Resilience Milkfish Cultivation in Tanjung Mas, Indonesia

Martuti

Sidiq

Melati

et al. 2021

JPII

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Milkfish cultivation becomes the main livelihood of farmers in coastal areas. However, the land for milkfish cultivation is shrinking due to land use for settlements, industries, and sea-level rise. A Stick-net cage is an aquaculture solution in limited space for an inland fishpond. It can be placed in seashore areas while maintaining the quality of the aquatic environment and nutrient circulation. This study aims to analyze water compatibility in the stick-net cage areas for supporting sustainable aquaculture activities. An exploratory observational study was conducted in Tanjung Mas Village, Semarang, Central Java, Indonesia. Ten sampling areas were determined purposively by considering the point locations toward household wastewater and industrial outfalls. Based on these criteria, the ten stations used as sample areas were divided into industrial outfall areas (1st – 5th station) and areas close to the open sea (6th – 10th station). Physical parameters in the sampling areas, including temperature, water-current, turbidity, and clearness, met seawater standards for milkfish cultivation. Chemical indicators, such as NH4 and P in water, were very high, which may be caused by domestic and industrial waste contamination and increased organic fermentation activity on the seabed. However, the existing stick-net cages have exceeded the capacity of the coastal water areas. In general, the physicochemical parameters in the Tanjung Mas water area are suitable for milkfish cultivation. However, it is necessary to reduce the amount of pond density to give growth space for milkfish. In addition, wastewater management and treatment plants should be built up to reduce water contamination.

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Section: Resultsmentioning

confidence: 99%

The Assessment of Water Compatibility of Adaptable Stick-Net Cage for Resilience Milkfish Cultivation in Tanjung Mas, Indonesia

Martuti

Sidiq

Melati

et al. 2021

JPII

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“…Taxonomic characters: 4 cells attached to each other through the gelatinous bag, cells are spherical in shape, look like a flower, colonial form, and chloroplast is present in cells, 10.4 µm in width, dark green in colour, cup-shaped chloroplast with pyrenoid, mucilaginous colony Figure 1c. Geographical distribution: Spitsbergen (Richter et al, 2014), India (Hardikar et al, 2019).…”

Section: Tetraspora Gelatinosa (Vaucher) Desvaux 1818: 18mentioning

confidence: 99%

A Prospective Study on Morphological Identification and Characterization of Freshwater Green Algae Based on the Microscopic Technique in District Rawalpindi

Minhas¹,

Mumtaz²,

Kaleem³

et al. 2023

PJAR

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G reen algae are one of the most diverse groups of algae, with at least 7000 species (Nelson and Garcia-Pichel, 2021). Green algae are characterized by several distinct features including filaments, colonies, branched, motile, non-motile, and bladelike thallus (Leliaert et al., 2012). Chloroplast contained chlorophyll a, b and accessory pigments including carotenes and xanthophylls which are surrounded by double membrane with thylakoid arranged in lamellae. Pyrenoid are present and embedded in the chloroplast and surrounded by starch, the primary reserve carbohydrate (Forjan et al., 2015). Green algae have variations in their morphology ranging from microscopic flagellated unicells to complex macroscopic thalli with varying degrees of morphological differentiation. They are a paraphyletic group from a taxonomic standpoint since they have a common ancestor with plants and have Abstract | The current study was carried out to isolate, identify and characterized fresh water green algae species from ecologically diverse habitats of Tehsil Gujar Khan, District Rawalpindi. A microscopic image data was used to identify algal species. A total of 30 species were recorded that belonged to 4 orders, 11 families, and 14 genera. Clamydomonas reinardtii, Acutodesmus obliquus and Cosmarium isthmocondrum are new record from Pakistan. Among identified taxa, Scenedesmus was the dominant genus with 8 species and their contribution was 26.6%. The 2 nd most dominant genus was Cosmarium with 6 species and their contribution was 20%. The other genera Chlorococcum, Ankistrodesmus, Coelastrum, and Closterium were (6.6%). Some genera represented only one (3.3%) species that were Chlamydomonas, Eudorina, Tetraspora, Chlorella, Westella, Pediastrum, Acutodesmus, and Stigeoclonium. Hence, the current study reveals that Gujar Khan, District Rawalpindi is a rich source of green algae and an ideal place for their cultivation.

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“…Ammonia accumulates in the water because of the ammonification originating from organic detritus, such as excess feed and feces in the intensive culture systems [10]. High concentrations of ammonia lead to the pollution of aquatic water, reducing growth rates [11], affecting osmoregulation [2], causing cellular toxicity [12], increasing the susceptibility of aquatic organisms to infection [13], and even resulting in mortality. Additionally, ammonia affects the profusion and physiological conditions of different aquatic animals; among them, the decapod crustaceans are particularly vulnerable to it due to the toxic effect of ammonia, which can influence survival, metabolism, immune function, and oxidative stress [5,14,15].…”

Section: Introductionmentioning

confidence: 99%

Differential Toxicity Responses between Hepatopancreas and Gills in Litopenaeus vannamei under Chronic Ammonia-N Exposure

Zhang,

Liu,

Zhuo

et al. 2023

Animals

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Ammonia nitrogen is one of the main toxic substances in aquatic cultivation environments. Chronic exposure to excessive amounts of ammonia-N creates toxic consequences, retarding the growth of aquatic organisms. This study investigated the growth performance, morphological and physiological alterations, and transcriptome changes in the hepatopancreas and gills of white shrimp Litopenaeus vannamei. The results showed that there was no significant difference in the survival rate (p > 0.05), whereas growth performance was reduced significantly in the treated groups compared to the control groups (p < 0.05). Significant structural damage and vacuolation occurred in hepatopancreas and gill tissues in the treated groups. Superoxide dismutase (SOD) activity and Na+/K+-ATPase content were significantly increased by chronic ammonia-N exposure in the two tissue groups. In addition, catalase (CAT) activity and malondialdehyde (MDA) levels were significantly altered in the hepatopancreas groups (p < 0.05), whereas no differences were observed in the gill groups (p > 0.05). There were 890 and 1572 differentially expressed genes identified in the hepatopancreas (treated versus control groups) and gills (treated versus control groups), respectively, of L. vannamei under chronic ammonia-N exposure. Functional enrichment analysis revealed associations with oxidative stress, protein synthesis, lipid metabolism, and different serine proteases. The gills maintained cellular homeostasis mainly through high expression of cytoskeleton and transcription genes, whereas the hepatopancreas down-regulated related genes in the ribosome, proteasome, and spliceosome pathways. These genes and pathways are important in the biosynthesis and transformation of living organisms. In addition, both tissues maintained organismal growth primarily through lipid metabolism, which may serve as an effective strategy for ammonia-N resistance in L. vannamei. These results provided a new perspective in understanding the mechanisms of ammonia-N resistance in crustaceans.

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Inter-annual variability of phytoplankton assemblage and Tetraspora gelatinosa bloom from anthropogenically affected harbour, Veraval, India

Cited by 8 publications

References 55 publications

The Assessment of Water Compatibility of Adaptable Stick-Net Cage for Resilience Milkfish Cultivation in Tanjung Mas, Indonesia

The Assessment of Water Compatibility of Adaptable Stick-Net Cage for Resilience Milkfish Cultivation in Tanjung Mas, Indonesia

A Prospective Study on Morphological Identification and Characterization of Freshwater Green Algae Based on the Microscopic Technique in District Rawalpindi

Differential Toxicity Responses between Hepatopancreas and Gills in Litopenaeus vannamei under Chronic Ammonia-N Exposure

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