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Impact of Coloured LED lights and Lunar Phase on Catches of Selected Shrimp Species in a Filtration Field at Kudappuram, Vembanad Lake

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Title Impact of Coloured LED lights and Lunar Phase on Catches of Selected Shrimp Species in a Filtration Field at Kudappuram, Vembanad Lake
Not Available
 
Creator Salini Mohanan
Madhu, V. R.
Kumar, B. M.
Nafin, K. S.
Soumya, K. R.
 
Subject M. dobsoni
M. monoceros
F. indicus
coloured LED light
filtration field
visual cues
 
Description Not Available
This study examined the influence of using LED
lights and moon phase on shrimp caught in filtration
field with respect to three shrimp species; Metapenaeus
dobsoni, Metapenaeus monoceros and Fenneropenaeus
indicus. A total of 849 kg of shrimp comprising three
species were collected during the six months (60
trials) of study period from January 2022 to June
2022. The results revealed a significant difference in
catch between red light (474.05 kg) and green light
(375.40 kg) (LR Chisq = 4.902, df = 1, p < 0.05).
Shrimps caught using red light (15.8 ± 7.27 kg/
sampling) were significantly higher compared to
those caught under green light (12.5 ± 8.84 kg/
sampling). Moon phase also significantly affected
total shrimp catch per day (LR Chisq = 20.016,
df = 5, p < 0.01). Pairwise comparisons indicated
significant differences in catch quantities between
specific moon phase combinations. It was found that
there was significant difference in catch of M. dobsoni
in different moon phase. (LR Chisq = 12.103, df = 5,
p < 0.05). The catch of M. monoceros were higher
under red light than green light, and moon phase
significantly affected catches (LR Chisq = 18.319,
df = 5, p < 0.01). The catch quantities of F. indicus
showed no significant difference associated with
lighting conditions or moon phase. These findings
emphasize the importance of considering lighting
conditions and moon phase when assessing shrimp
catch, from filtration fields as they can influence
catch outcomes which may be due to increased
visibility or changes in species behaviour.
Not Available
 
Date 2024-05-18T19:59:18Z
2024-05-18T19:59:18Z
2023-12
 
Type Research Paper
 
Identifier Salini Mohanan, Madhu, V. R., Kumar, B. M., Nafin, K. S. and Soumya, K. R. (2023) Impact of Coloured LED lights and Lunar Phase on Catches of Selected Shrimp Species in a Filtration Field at Kudappuram, Vembanad Lake. Fish. Techol. 60(4): 247-253.
0015-3001
http://krishi.icar.gov.in/jspui/handle/123456789/82836
 
Language English
 
Relation Not Available;
 
Publisher Society of Fisheries Technologists, India (SOFTI)