Scott A. Heppell

Works (5)

Updated: July 5th, 2023 16:02

2000 article

Identification of gender and reproductive maturity in the absence of gonads: muscle tissue levels of sex steroids and vitellogenin in gag (Mycteroperca microlepis)

Heppell, S. A., & Sullivan, C. V. (2000, January 1). Canadian Journal of Fisheries and Aquatic Sciences.

By: S. Heppell* & C. Sullivan*

topics (OpenAlex): Reproductive biology and impacts on aquatic species; Fish Ecology and Management Studies; Aquaculture Nutrition and Growth
TL;DR: Sensitive immunoassays were utilized to measure levels of the sex steroids estradiol-17beta (E2), testosterone (T), and 11-ketotestosterone (11KT) and the egg-yolk precursor vitellogenin (VTG) in gag on a quarterly basis and found that males were significantly higher in males than in adult females or immature fish. (via Semantic Scholar)
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14. Life Below Water (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1999 article

Enzyme-Linked Immunosorbent Assay (ELISA) of Vitellogenin in Temperate Basses (GenusMorone): Plasma and In Vitro Analyses

Heppell, S. A., Jackson, L. F., Weber, G. M., & Sullivan, C. V. (1999, May 1). Transactions of the American Fisheries Society.

By: S. Heppell*, L. Jackson, G. Weber* & C. Sullivan*

topics (OpenAlex): Reproductive biology and impacts on aquatic species; Fish Ecology and Management Studies; Aquaculture Nutrition and Growth
TL;DR: Blood levels of the egg yolk precursor vitellogenin (VTG) can be used as a definitive marker for the onset and progress of maturation in female teleosts and an enzyme-linked immunosorbent assay (ELISA) was developed to measure VTG in blood plasma from three species of temperate basses. (via Semantic Scholar)
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14. Life Below Water (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 article

Fathead minnow (Pimephales promelas) vitellogenin: purification, characterization and quantitative immunoassay for the detection of estrogenic compounds

Parks, L. G., Cheek, A. O., Denslow, N. D., Heppell, S. A., McLachlan, J. A., LeBlanc, G. A., & Sullivan, C. V. (1999, June 1). Comparative Biochemistry and Physiology Part C Pharmacology Toxicology and Endocrinology, Vol. 123C, pp. 113–125.

By: L. Parks n, A. Cheek *, N. Denslow *, S. Heppell n, J. McLachlan *, G. LeBlanc n , C. Sullivan n

author keywords: enzyme-linked immunosorbant assay (ELISA); fathead minnow; vitellogenin; estrogenic compounds; 17 beta-estradiol; toxicology; reproduction; ovary
MeSH headings : Amino Acid Sequence; Animals; Blotting, Western; Chromatography, Ion Exchange; Cyprinidae; Environmental Monitoring; Enzyme-Linked Immunosorbent Assay / methods; Estrogens / analysis; Male; Molecular Sequence Data; Reproducibility of Results; Vitellogenins / biosynthesis; Vitellogenins / chemistry; Vitellogenins / isolation & purification
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth; Sperm and Testicular Function
TL;DR: The VTG ELISA could be useful for the detection of estrogenic properties associated with certain compounds and could be easily incorporated into standard laboratory toxicity assays using this species. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1999 article

Gag (Mycteroperca microlepis) vitellogenin: purification, characterization and use for enzyme-linked immunosorbent assay (ELISA) of female maturity in three species of grouper

Heppell, S. A., & Sullivan, C. V. (1999, May 1). Fish Physiology and Biochemistry.

By: S. Heppell n & C. Sullivan n

author keywords: maturity; maturity schedule; Nassau; red hind; reproduction; vitellogenesis
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth; Fish Ecology and Management Studies
TL;DR: Purification and partial characterization of VTG from a temperate marine serranid, the gag, and development of a competitive, enzyme-linked immunosorbent assay (ELISA) for gag VTG (gVTG) are reported on. (via Semantic Scholar)
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14. Life Below Water (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1994 article

Evaluating Management Alternatives for Red-Cockaded Woodpeckers: A Modeling Approach

Heppell, S. S., Walters, J. R., & Crowder, L. B. (1994, July 1). Journal of Wildlife Management.

By: S. Heppell*, J. Walters & L. Crowder

author keywords: COOPERATIVE BREEDER; ENDANGERED SPECIES; MATRIX MODEL; NORTH-CAROLINA; PICOIDES-BOREALIS, RED-COCKADED WOODPECKER
topics (OpenAlex): Turtle Biology and Conservation; Avian ecology and behavior; Amphibian and Reptile Biology
TL;DR: A male-only, stage-based matrix model is presented to assess potential effects of various management techniques used to enhance red-cockaded woodpecker populations and predicts the population-level effects of 5 proposed management techniques that affect stage-specific survival, growth, and fecundity. (via Semantic Scholar)
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13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

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