Abstract - (2020) Volume 0, Issue 0
Morphofunctional alterations induced by chlorpyrifos on the gills apparatus of Thalassomapavo
Rachele Macirella,
Vittoria Curcio and
Elvira Brunelli
Department of Biology, Ecology and Earth Science (DiBEST), University of Calabria, Rende, Italy
Abstract
Coastal areas represent the most vulnerable marine
environment due to human exploitation and the contamination
caused by pollutants. Organophosphate pesticides (OPs) have
gained popularity worldwide as a viable alternative to
organochlorine pesticides, and currently represent almost 40%
of the global market (Triassi et al. 2019). One of the most
employed OPs is chlorpyrifos (CPF), a broad-spectrum
insecticide commonly used for domestic and agricultural pests
(Bellas and Gil 2020). Based on its chemical properties and its
toxicity to non-target organisms, CPF is of great concern to
aquatic ecosystems where its presence has been extensively
documented (Bellas and Gil 2020; Zahran et al., 2018).
In the present study, we used as a model the ornate wrasse,
Thalassomapavo, a widespread species in the Mediterranean
Sea that inhabit coastal waters near rocks. We investigated the
morphological, ultrastructural, and functional alterations
induced on the gill apparatus after 48 and 96 hours of exposure
to two relevant CPF concentrations (4 and 8 µg/L). The main
histopathological changes observed were hypertrophy of
secondary filaments, ballooning of lamellar apical tips,
hypertrophy of chloride cells, epithelial and vascular
degenerations. CPF also induced an increase in the expression
of Na+
/K+
-ATPase in all experimental groups.
Our study successfully demonstrates that the alterations induced
by CPF on T. Pavo gills are dose and time-dependent and may
adversely affect gas exchange and ionic balance. This is the
first evidence of the effects exerted by CPF on T. pavo gills and
highlights the harmful properties of this insecticide even at low
concentrations.
Biography
Rachele Macirella has completed her PhD in Life Sciences in 2017 at the age of 29 from the University of Calabria and starts postdoctoral studies at the same University. She has published 9 papers in international peer review journals with impact factor.
Speaker Publication:
1. Exposure and post-exposure effects of chlorpyrifos on Carassius auratus gills: An ultrastructural and morphofunctional investigation
2. Lead toxicity in seawater teleosts: A morphofunctional and ultrastructural study on the gills of the Ornate wrasse (Thalassoma pavo L.)
3. Bergamot Polyphenols Boost Therapeutic Effects of the Diet on Non-Alcoholic Steatohepatitis (NASH) Induced by "Junk Food": Evidence for Anti-Inflammatory Activity
4. Morphological and Immunohistochemical Modifications in Zebrafish (Danio rerio) Gills After Short-Term Exposure to the Fungicide Tebuconazole
5. Chronic exposures to fungicide pyrimethanil: multi-organ effects on Italian tree frog (Hyla intermedia) OPEN
3 rd World congress on Environmental Toxicology & Health Safety | Webinar | May 25-26, 2020.
Abstract Citation:
RacheleMacirella, Morphofunctional alterations induced by chlorpyrifos on the gills apparatus of Thalassomapavo Environmental Toxicology 2020, 3 rd World congress on Environmental Toxicology & HealthSafety;Webinar–May25-26,2020
https://environmentaltoxicology.toxicologyconferences.c om/abstract/2020/morphofunctional-alterationsinduced-by-chlorpyrifos-on-the-gills-apparatus-ofthalassomapavo
