Evaluation of toxicity and lethal concentration (LC50) of silver and selenium nanoparticle in different life stages of the fish Tenualosa ilish (Hamilton 1822)

Abstract

The anadromous Tenualosa ilish is the most economically important fish in the world and consequently in Iran. The national fish of Iranian contributes about 12% of the total fish production and about 1% of GDP. About 4,500,000 people are directly involved with the catching for livelihood; around four to five million people are indirectly involved with the trade. The present study aimed to estimate 96hLC50s of silver and selenium on LC50 of nanoparticle of silver and selenium in different life stages of the fish T. ilish in the environment experimental. The LC50 for silver in four stages of fish T. ilish were larvae (0.23ppm), fry (0.45ppm), juvenile (0.90ppm) and fingerling (1.45ppm), respectively. There was significance difference between LC50 levels in four stages of fish species (P<0.05>) and the LC50 for selenium in four stages of fish T. ilish were larvae (0.89ppm), fry (0.95ppm), juvenile (1.12ppm) and fingerling (1.65ppm), respectively. There was significance difference between LC50 levels in four stages of fish species (P<0.05>). Variability in acute toxicity even in a single species and single toxicant depending on the size, age and condition of the test species along with experimental factors. Finally, in order of the toxicity of heavy metal in different stage of fish were larvae > fry > juvenile > fingerling, respectively. In conclusion, the toxicity tended to elevate with decreasing fish size.

Read more about this article: https://juniperpublishers.com/ofoaj/OFOAJ.MS.ID.555722.php

Read more Juniper Publishers Google Scholar articles https://scholar.google.com/citations?view_op=view_citation&hl=en&user=V6JxtrUAAAAJ&citation_for_view=V6JxtrUAAAAJ:1yQoGdGgb4wC

Comments

Post a Comment

Popular posts from this blog

Bioluminescence in Fishes: Diversity and Functions- Juniper Publishers

                  Juniper Publishers -  Journal of Oceanography Introduction Bioluminescence is a amazing biological phenomen, which can be found in terrestrial and oceanic environments. Numerous bioluminescent taxa were described from the marine environment [ 1 - 2 ]. Bioluminescence is especially abundant in the deep-sea. The majority of luminescent taxa are invertebrate animals. In contrast to the high diversity in invertebrates, vertebrates lack bioluminescent light organs, with the exception of an amazing diversity in teleosts and some shark species. A recent paper reported that bioluminescence appeared in ray finned fishes in 27 independent evolutionary events [ 3 ]. Bioluminescent light is generated in spezialized light organs based on a oxyidation of a light emitting luciferine in the presence of oxygene and the enzyme luciferin [ 1 , 4 ]. Most of the bioluminescent species produce blue green light in the wavelength range around Xmax ~475nm [ 1 ]. Luminescence in fishes c
Read more

SDS-PAGE Electrophoresis of Ocypode rotundata Miers, 1882 and O. ceratophthalma Pallas, 1772 using Muscle Tissue along the Coast of Pakistan

Image
  Oceanography & Fisheries Open Access Journal Juniper Publishers Authored by Sahir Odhano Abstract Electrophoretic studies for the identification of ghost crabs (Ocypode rotundata and Ocypode ceratophthalma) using the SDS-PAGE were performed on protein patterns along the Sandspit coastal areas. The muscle tissues were used to estimate the molecular mass of proteins through SDS-PAGE electrophoresis. Electrophoretic settings were standardized to use 10% acrylamide resolving gel and 5% acrylamide stacking gel. A discontinuous buffer system was used following the protocols of Laemmli (1970) to observe the relative mobility and molecular weight of proteins. In O. rotundata total of 6 protein bands were resolved among them band-5 was found similar in size to the marker used (BSA = 66 kDa MW). Whereas in O. ceratophthalma total of 8 protein bands were resolved among them three protein bands (band-6, band-7, and band-8) were found to be higher in size than the molecular mar
Read more

Environmental Perception of Recreational Fishers in Urban Beaches

Image
  Oceanography & Fisheries Open Access Journal Juniper Publishers Authored by:  Jacqueline S Silva-Cavalcanti Abstract Recreational fishers depend on the good quality of those environments. The assessment of the environmental perception of social actors who show a sense of belonging to the landscape can better describe the impacts on the environment. This study aimed to assess the recreational fishers’ perception of the environmental quality in four urban beaches. 170 recreational fishers agreed to participate in the research. They were required to respond to questions about their fishing strategies and their perception of the environmental quality of the beaches and the possible impacts on the fishing activity. Based on the responses presented, a description of both local fishing activities made, as well as an analysis of the perception of the beaches’ environmental quality for fishers. On average, the recreational fisher ones have been working for 16.2 years. Pollu
Read more