Jessica Norstog

Jessica Norstog
University of Massachusetts Amherst | UMass Amherst · Department of Biology

BSc

About

4
Publications
1,144
Reads
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15
Citations
Additional affiliations
October 2015 - April 2016
King Abdullah University of Science and Technology
Position
  • Research Assistant
August 2011 - May 2015
University of New Haven
Position
  • Student

Publications

Publications (4)
Article
Full-text available
Life histories of anadromous and landlocked sea lamprey are similar, though landlocked populations lack seawater (SW) exposure, likely experiencing relaxed selection on SW survival traits. This study investigated SW osmoregulation in juvenile sea lamprey from one anadromous and three landlocked populations from the Great Lakes and Lake Champlain. J...
Article
Full-text available
We used a representative of one of the oldest extant vertebrate lineages (jawless fish or agnathans) to investigate the early evolution and function of the growth hormone (GH)/prolactin (PRL) family. We identified a second member of the GH/PRL family in an agnathan, the sea lamprey ( Petromyzon marinus ). Structural, phylogenetic, and synteny analy...
Article
The cost of osmoregulation in teleosts has been debated for decades, with estimates ranging from one to 30 % of routine metabolic rate. The variation in the energy budget appears to be greater for euryhaline fish due to their ability to withstand dynamic salinity levels. In this study, a time course of metabolic and physiological responses of the e...
Preprint
Full-text available
The unstable nature of freshwater ponds in arid landscapes represent a sizable challenge for strictly aquatic organisms, such as fishes. Yet the Arabian Desert, bordering the coastline of the Red Sea, plays host to a species very well adapted to such extreme environments: the Arabian pupfish, Aphanius dispar. In this study, we estimated patterns of...

Questions

Questions (3)
Question
I am analyzing some data which consist of cell counts per length of tissue that express a protein and I have a concern about zero values in my data set. The zeroes are a result of the loss of a cell type during development and thus do not have the protein; they are not a result of my treatments.
For example, I have 10+/- SEM cells in group A, 12 +/- SEM cells/length in group B, and 0 cells/length in group C. Because these are normalized based on the length of the tissue, they are not true counts from my understanding. ANOVA analysis doesn't seem appropriate due to the heterogeneity issue (group C has no variation). I'm assuming that non-parametric analysis might be the best option.
However, if this is a loss of that cell type, is including group C even appropriate/relevant to the statistical analysis? In my opinion, this comes down to the hypothesis, which is the number of cells that express this protein at the different developmental stages. This leads to me to ask if the values of group C are truly 0 or are they "no data/n.d." because those cells simply don't exist at that stage. I lean toward considering group C as truly 0 and doing non-parametric analysis. Feedback of my thought process and outcome would be appreciated - thank you!
Question
I am looking to get a peptide synthesized and have gotten many quotes from various companies. One company, WatsonBio, provided a very appealing quote, so it seems too good to be true. I am trying to do some recon on the company, but I thought I'd reach out to this community to see if anyone has worked with them before.
Thank you in advance!
Question
I have recently metamorphosed lamprey which are still dwelling in the sand at the bottom of the tanks. I am looking to expose them to a seawater challenge. However, I do not want to stress the lamprey out by mixing seawater and sand. So I was wondering what the best method of measuring the salinity of the water within the sand to ensure that they are being exposed to the full-strength seawater. Currently I have found methods of testing for terrestrial soils, but I was hoping someone had an adapted method for seawater tanks. Thanks!

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