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Apical Testis Structure And The Effects Of Cadmium Treatment On Spermatogenesis In Drosophila, Paulina J. Cardaci
Apical Testis Structure And The Effects Of Cadmium Treatment On Spermatogenesis In Drosophila, Paulina J. Cardaci
Seton Hall University Dissertations and Theses (ETDs)
The fruit fly Drosophila melanogaster is used extensively as a model for studying molecular, genetic and cellular aspects of human disease and physiology. Our lab has used D. melanogaster and related species to study the structure of the testis stem cell niche, as well as other aspects of spermatogenesis. We previously revealed a novel stem cell niche structure in D. pseudoobscura, a distant relative of D. melanogaster. The signaling center of the D. melanogaster stem cell niche has a well-characterized rosette arrangement of fasciclin-positive cells terms the “hub”. D. pseudoobscura, however, lacks a punctuate hub and instead displays a …
Molecular Characterization Of Hemoglobin Protein In Larvae Of 4th Instar Chironomidae For Evaluating Environmental Quality, Jun Taek Oh
Seton Hall University Dissertations and Theses (ETDs)
Studying environmental quality is a challenging task. It is a complicated exercise since the environment is constantly influenced by numerous variables such as climate change, anthropogenic activities, and unexpected natural disasters. Traditionally, exposure to chemical pollutants depended on chemical and physical analysis of environmental media. Unfortunately, this approach has not taken into consideration bioavailability of the chemical(s) of interest to exposed organisms and/or modification of the chemical (bioactivation/detoxification) by the organism. Benthic macroinvertebrates (BMIs) have been chosen as bioindicators for numerous environmental biomonitoring programs geared towards the assessment of aquatic ecosystems. Biomonitoring requires a more subtle measure – a biomarker …
The Effects Of Cadmium On The Hemoglobin Genes Of Chironomus Riparius, Anthony Gerardi
The Effects Of Cadmium On The Hemoglobin Genes Of Chironomus Riparius, Anthony Gerardi
Seton Hall University Dissertations and Theses (ETDs)
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Evaluating Acute Toxicity Of Cadmium To Chironomid Using Hemoglobin As A Molecular Biomarker, Jun Taek Oh
Evaluating Acute Toxicity Of Cadmium To Chironomid Using Hemoglobin As A Molecular Biomarker, Jun Taek Oh
Seton Hall University Dissertations and Theses (ETDs)
Effects of cadmium (Cd), a heavy metal contaminant, on hemoglobin were investigated in aquatic midge fly larvae of the Family, Chironomidae. In this study, chironomid populations from one polluted site, Kearny Marsh, New Jersey, two reference sites, North East Creek, and Bass Harbor, ME, and a laboratory population were taxonomically identified and tested for their sensitivity to Cd. Heavy metals in tissue, water and sediment were analyzed using Atomic Absorption Spectroscopy. Water quality at each site was assessed by measuring pH, dissolved oxygen (DO), oxidation-reduction potential ( eH), salinity and temperature. Hemoglobin proteins in individual larvae were easily detected using …