Authors :
Dipankar Dey; Bratati Bhanja; Dulal Kumar De; Ramaprasad Bhattacharya
Volume/Issue :
Volume 8 - 2023, Issue 6 - June
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/2kbuc39
DOI :
https://doi.org/10.5281/zenodo.8094412
Abstract :
For aquaculture management, the presence of
unwanted predatory or trash fishes in the newly stocked
fish ponds create a great nuisance because of their
competition with desired fishes for food and shelter.
In this perspective for eradication of such
predatory fishes by using phytopiscicides the present
study was conducted to determine the median lethal
concentration (LC 50) value of Antigonon leptopus
aqueous fresh leaf extract on Rupchand fish (Stramoteus
sinensis) in laboratory condition. Piscicidal effect had
been studied by using five different concentration of
aqueous leaf extract (40mg/L, 80mg/L, 120mg/L,
160mg/L and 200mg/L) on fingerlings of Rupchand fish.
The phytopiscicidal effect was tested for 24 hours of
exposure and the LC50 value 57.54mg/L was estimated
by probit analysis. LC50 values were found to be
inversely proportional to exposure duration. Moreover,
the acute (LC 100) effect that killed all the test fishes
within 24-hrs was determined to be the highest
concentration of 235.59mg/L. where as in control no such
effect had been found. The phytochemicals present in
tested plant material and also the water parameters
(TDS, DO, pH etc.).
The dose response mortality and behavioural
changes were studied against the aquous leaf extract of
Antigonon leptopus Hook. The result indicated the
potential piscicidal property of this botanical. Being a
potent biodegradable, easily available, eco-friendly,
icthyotoxicant against environmentally hazardous
synthetic chemicals, aqueous fresh crude leaf extract of
this plant species may be used for eradicating unwanted
predatory or trash fishes for pre stocking management
of pond-based aquaculture which would be helpful for
making future ecofriendly industrial product.
Keywords :
Antigonon leptopus, Stramoteus sinensis, Phytotoxicity, LC50.
For aquaculture management, the presence of
unwanted predatory or trash fishes in the newly stocked
fish ponds create a great nuisance because of their
competition with desired fishes for food and shelter.
In this perspective for eradication of such
predatory fishes by using phytopiscicides the present
study was conducted to determine the median lethal
concentration (LC 50) value of Antigonon leptopus
aqueous fresh leaf extract on Rupchand fish (Stramoteus
sinensis) in laboratory condition. Piscicidal effect had
been studied by using five different concentration of
aqueous leaf extract (40mg/L, 80mg/L, 120mg/L,
160mg/L and 200mg/L) on fingerlings of Rupchand fish.
The phytopiscicidal effect was tested for 24 hours of
exposure and the LC50 value 57.54mg/L was estimated
by probit analysis. LC50 values were found to be
inversely proportional to exposure duration. Moreover,
the acute (LC 100) effect that killed all the test fishes
within 24-hrs was determined to be the highest
concentration of 235.59mg/L. where as in control no such
effect had been found. The phytochemicals present in
tested plant material and also the water parameters
(TDS, DO, pH etc.).
The dose response mortality and behavioural
changes were studied against the aquous leaf extract of
Antigonon leptopus Hook. The result indicated the
potential piscicidal property of this botanical. Being a
potent biodegradable, easily available, eco-friendly,
icthyotoxicant against environmentally hazardous
synthetic chemicals, aqueous fresh crude leaf extract of
this plant species may be used for eradicating unwanted
predatory or trash fishes for pre stocking management
of pond-based aquaculture which would be helpful for
making future ecofriendly industrial product.
Keywords :
Antigonon leptopus, Stramoteus sinensis, Phytotoxicity, LC50.
