Cardiac and enzyme activity s bioindicators for pesticide effects in freshwater crabs (Poppiana dentate). - Université des Antilles Access content directly
Conference Papers Year : 2019

Cardiac and enzyme activity s bioindicators for pesticide effects in freshwater crabs (Poppiana dentate).

Delezia Singh
  • Function : Author
  • PersonId : 1064085
Mary Alkins-Koo
  • Function : Author
  • PersonId : 1064086
Luke Rostand
  • Function : Author
  • PersonId : 1064087
Azad Mohammed
  • Function : Author
  • PersonId : 1064088

Abstract

Pesticides are considered to indiscriminately impact non-target biota. Populations of non-target organisms, such as crabs, face a substantial risk from pesticide exposures since their distributions extend throughout aquatic systems impacted by agricultural activities. This work addresses such impacts through the use of the bioindicators, cardiac activity and neuro-transmitter enzyme activity, with application on an indigenous crab species, Poppiana den-tata. Crabs were subjected to exposure assays involving pesticides, administered in increas-ing concentrations. Cardiac activity was non-invasively measured and percent enzyme inhi-bition was determined through the immunosorbent assay technique. Enzyme inhibition no-tably increased (49.3% to 78.6%) with pesticide concentration and neurotransmitter enzyme activities were considerably lower in pesticide-exposed crabs, versus the control group (p < 0.05). Likewise, the cardiac activities of pesticide-exposed and control crabs were significant-ly different (p < 0.05), with the highest pesticide concentrations disrupting the cardiac pat-terns of affected crabs. Therefore, these findings support the usefulness of these bioindica-tors for demonstrating the physiological and biochemical effects of pesticides on non-target, freshwater crabs, such as P. dentata.
No file

Dates and versions

hal-02463315 , version 1 (31-01-2020)

Identifiers

  • HAL Id : hal-02463315 , version 1

Cite

Delezia Singh, Mary Alkins-Koo, Luke Rostand, Azad Mohammed. Cardiac and enzyme activity s bioindicators for pesticide effects in freshwater crabs (Poppiana dentate).. Caribbean Science and Innovation Meeting 2019, Oct 2019, Pointe-à-Pitre (Guadeloupe), France. ⟨hal-02463315⟩

Collections

UNIV-AG
70 View
0 Download

Share

Gmail Facebook X LinkedIn More