Skip to main content

Comparing the Susceptibility of Chironomus Striatapennis Larvae Exposed to Heavy Metals | Chapter 05 | Recent Advances in Biological Research Vol. 2

Fourth instar larvae of Chironomus striatapennis were collected from breeding aquarium under laboratory conditions and exposed for 96 hours to different doses of Pb, Cd and Hg for static bioassay to measure the LC50. Ten fourth instar larvae were placed in 100 ml beaker with 50 ml of each test solution. Larvae were exposed to six different concentrations, consisting of five trials. A control was also maintained wherein organisms were exposed to distilled water. Larvae were not fed during the toxicity tests. All beakers were free from tube forming materials. Data of mortality were subjected to probit analysis. Chi square was used to test for heterogeneity and the result was found to be significant (p<0.05) in all three metals. Results showed that sensitivity of larvae to metals was Hg> Cd >Pb. C. striatapennis showed noticeable response in LC50 study and was sensitive to low doses of heavy metals. Several secondary consumers have preferred this larva as their food. So unplanned industrialization may increase the level of heavy metals in the aquatic ecosystem which will accumulate slowly but definitely in different trophic levels and at the same time unusual death of these larvae may indirectly change the equilibrium of the aquatic ecosystem. Static bioassay of heavy metals revealed that larvae of Chironomus striatapennis was more sensitive to Hg than Cd and Pb respectively. It was also observed that LC50 values were less than standard permissible limit of these heavy metals. Unplanned industrialization may increase the level of heavy metals in the aquatic ecosystem which will accumulate slowly but steadily in different trophic levels and at the same time unusual death of these larvae may indirectly change the equilibrium of the aquatic ecosystem. As this larva is a preferred food for different secondary consumers, heavy metal toxicity may responsible for bio-accumulation of several heavy metals in chironomid larvae and make these larvae unsuitable for consumption.

Biography of author(s)

Dr. Susanta Nath
Associate Professor in the Department of Zoology, Government General Degree College Singur under the Department of Higher Education, Government of West Bengal, India.

Dr. Biplob Kumar Modak
Associate Professor in the Department of Zoology, Sidho Kanho Birsha University, Purulia, West Bengal, India.

Dr. Sudipta Das
Associate Professor of Zoology under West Bengal Education Service, India.

Rahul Podder
Department of Zoology, Sidho Kanho Birsha University, Purulia, West Bengal, India.

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/45/209/363-1

View Volume: https://doi.org/10.9734/bpi/rabr/v2

Labels:

Comments

Post a Comment

Popular posts from this blog

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cells.
Post a Comment
Read more

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefits,
Post a Comment
Read more

Risk Factors for Postpartum Psychiatric Disorders. A Review of the Literature | Chapter 8 | New Visions in Medicine and Medical Science Vol. 4

  Objective: The aim of this study was to explore the risk factors for the development of postpartum psychiatric disorders through international literature. Materials and Methods: Throughout many articles in PubMed, Google scholar and PsycInfo, a great amount of recent data was gathered to identify the disorders that are most common as well as their risk factors. Results: After childbirth, most commonly women experience postpartum depression, anxiety disorders, post-traumatic stress disorder and postpartum psychosis. All the disorders have many similar risk-factors with the main one being preexisting psychiatric disorder and many similar symptoms too. Conclusions: Women after childbirth are at risk of experience many psychiatric disorders, such as postpartum distress, postpartum post traumatic stress disorder and even more rarely postpartum psychosis. It is important to provide comprehensive support to ensure the well-being of both the mother and the infant and this will be en
Post a Comment
Read more