Bioluminescence of green Noctiluca scintillans from the coastal waters of Kochi (southwest coast of India) and in vivo experiments on bioluminescence in response to mechanical stimuli and its diurnal variations

2022 ◽  
pp. 1-15
Author(s):  
A. Parvathi ◽  
C. R. Vishal ◽  
N. V. Madhu ◽  
P. Anil ◽  
P. M. Mohammed Iqbal ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Diurnal Variations ◽  
Mechanical Stimuli ◽  
Noctiluca Scintillans ◽  
Southwest Coast Of India ◽  
Southwest Coast ◽  
In Vivo Experiments

Occurrence of a multi-species diatom bloom dominated by Proboscia alata (Brightwell) Sandstorm along the southwest coast of India

2013 ◽  
Vol 42 (1) ◽  
Author(s):  
Lathika Cicily ◽  
K. Padmakumar ◽  
C. Asha Devi ◽  
V. Sanjeevan
Keyword(s):  
Cell Density ◽  
Coastal Waters ◽  
Monsoon Season ◽  
Late Summer ◽  
Nutrient Concentrations ◽  
Diatom Bloom ◽  
Southwest Coast Of India ◽  
Southwest Coast ◽  
Toxic Species ◽  
A Cell

AbstractThe present communication reports on the occurrence of a multi-species diatom bloom in the upwelled waters along the southwest coast of India. During the late summer monsoon season (September 2009) a multi-species diatom bloom with a pale green discoloration of the sea surface was observed in the coastal waters of southwest coast of India. The bloom spread over an area of approximately 15 km2 along the coastal waters off Kannur (Lat. 11°59.471 N, Long. 75°03.446 E). Total diatom cell density of the bloom area was 16 × 104 cells l−1. Proboscia (=Rhizosolenia) alata (Brightwell) Sandstrom constituted 90% of the total phytoplankton population. Other phytoplankton groups that contributed to the bloom population included Chaetoceros spp., Pseudo-nitzschia spp., Rhizosolenia spp., Coscinodiscus sp., Leptocylindrus danicus, Thalassiosira sp., and Bacteriosira sp. Among these Pseudo-nitzschia multiseries, a toxic species with the ability to produce potent neurotoxin domoic acid, was observed with a cell density of 4 × 103 cells l−1. Surface chlorophyll a concentration of the bloom region was 14.1 μg l−1. Nutrient concentrations of the bloom area were 0.01 μmol l−1 for NO2-N, 0.1 μmol l−1 for NO3-N, 0.83 μmol l−1 for PO4-P and 11.44 μmol l−1 for SiO4.

scholarly journals Antinociceptive modulation by the adhesion GPCR CIRL promotes mechanosensory signal discrimination

eLife ◽  
2020 ◽  
Vol 9 ◽  
Author(s):  
Sven Dannhäuser ◽  
Thomas J Lux ◽  
Chun Hu ◽  
Mareike Selcho ◽  
Jeremy T-C Chen ◽  
...  
Keyword(s):  
High Threshold ◽  
Mechanical Stimuli ◽  
In Vivo Experiments ◽  
Physiological Processes ◽  
Signal Discrimination ◽  
Low Threshold ◽  
Sensory Responses ◽  
Opposing Effects ◽  
Adhesion Gpcr

Adhesion-type GPCRs (aGPCRs) participate in a vast range of physiological processes. Their frequent association with mechanosensitive functions suggests that processing of mechanical stimuli may be a common feature of this receptor family. Previously, we reported that the Drosophila aGPCR CIRL sensitizes sensory responses to gentle touch and sound by amplifying signal transduction in low-threshold mechanoreceptors (Scholz et al., 2017). Here, we show that Cirl is also expressed in high-threshold mechanical nociceptors where it adjusts nocifensive behaviour under physiological and pathological conditions. Optogenetic in vivo experiments indicate that CIRL lowers cAMP levels in both mechanosensory submodalities. However, contrasting its role in touch-sensitive neurons, CIRL dampens the response of nociceptors to mechanical stimulation. Consistent with this finding, rat nociceptors display decreased Cirl1 expression during allodynia. Thus, cAMP-downregulation by CIRL exerts opposing effects on low-threshold mechanosensors and high-threshold nociceptors. This intriguing bipolar action facilitates the separation of mechanosensory signals carrying different physiological information.

Indoor and outdoor radon levels and their diurnal variations in the environs of southwest coast of India

2005 ◽  
Vol 1276 ◽  
pp. 341-343 ◽  
Author(s):  
N. Karunakara ◽  
H.M. Somashekarappa ◽  
K.M. Rajashekara ◽  
K. Siddappa
Keyword(s):  
Diurnal Variations ◽  
Southwest Coast Of India ◽  
Southwest Coast ◽  
Indoor And Outdoor

scholarly journals Socio-economic analysis of finfish culture in cages in coastal waters of Kerala, southwest coast of India

2020 ◽  
Vol 62 (1) ◽  
pp. 54-59
Author(s):  
K. C. Vineetha Valsalan ◽  
◽  
V. Kripa ◽  
Shelton Padua ◽  
R. Narayanakumar ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Coastal Waters ◽  
Southwest Coast Of India ◽  
Southwest Coast

Step-up multiple regression model to compute Chlorophyll a in the coastal waters off Cochin, southwest coast of India

2007 ◽  
Vol 139 (1-3) ◽  
pp. 217-226 ◽  
Author(s):  
K. K. Balachandran ◽  
K. V. Jayalakshmy ◽  
C. M. Laluraj ◽  
Maheswari Nair ◽  
Thresiamma Joseph ◽  
...  
Keyword(s):  
Regression Model ◽  
Multiple Regression ◽  
Chlorophyll A ◽  
Coastal Waters ◽  
Multiple Regression Model ◽  
Southwest Coast Of India ◽  
Southwest Coast
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