Open Access. Powered by Scholars. Published by Universities.®
Animal Experimentation and Research Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Publication
- Publication Type
Articles 1 - 6 of 6
Full-Text Articles in Animal Experimentation and Research
Fecal Pellet Production By North Atlantic Zooplankton, Michael Gibson
Fecal Pellet Production By North Atlantic Zooplankton, Michael Gibson
Undergraduate Honors Theses
Fecal pellet carbon (FPC) production by zooplankton is a significant component of the ocean’s biological carbon pump: the suite of biological processes that mediate export of carbon to the deep ocean, ultimately leading to the sequestration of atmospheric carbon dioxide in the ocean. In this study, mesozooplankton (zooplankton 0.2 mm to ~2 cm) were collected from the epipelagic zone in the temperate North Atlantic Ocean during day and night in May 2021. Zooplankton were live separated into five size fractions and incubated on board ship in natural surface seawater to measure fecal pellet production rate of the mixed mesozooplankton community. …
Development Of Helical, Fish-Inspired Cross-Step Filter For Collecting Harmful Algae, Adam Schroeder, Lauren Marshall, Brian Trease, Anna Becker, S. Laurie Sanderson
Development Of Helical, Fish-Inspired Cross-Step Filter For Collecting Harmful Algae, Adam Schroeder, Lauren Marshall, Brian Trease, Anna Becker, S. Laurie Sanderson
Arts & Sciences Articles
A new filter was developed to collect harmful algae colonies by adapting the cross-step filtration structures and mechanisms discovered recently in filter-feeding fish. Extending beyond previously published models that closely emulated the basic morphology of the fish, the new cross-step filter's major innovations are helical slots, radial symmetry, and rotation as an active anti-clogging mechanism. These innovations enable the transport of concentrated particles to the downstream end of the filter. This advance was made possible by recognizing that biologically imposed constraints such as bilateral symmetry do not apply to human-made filters. The use of helical slots was developed in a …
Separating Oil From Water: Suspension-Feeding Goldfish Ingest Liquid Vegetable Oil, Kristin Edwards, Gary Rice, S. Laurie Sanderson
Separating Oil From Water: Suspension-Feeding Goldfish Ingest Liquid Vegetable Oil, Kristin Edwards, Gary Rice, S. Laurie Sanderson
Arts & Sciences Articles
We show that goldfish (Carassius auratus) voluntarily ingest liquid canola oil at the surface of the water and can swallow significant quantities of oil. The ability of fish to separate floating oil from water has not been tested previously, and the mechanisms used to retain oil in the form of suspended droplets, globules, or a surface film are unknown. Chromatograms of fatty acid methyl esters (FAMEs) prepared from gut samples confirmed that goldfish were able to obtain a substantial proportion of their daily lipid intake from canola oil at the surface of laboratory aquaria. Quantification of goldfish suspension-feeding, …
Mucous Contribution To Gut Nutrient Content In American Gizzard Shad Dorosoma Cepedianum, L. L. Holley, M K. Heidman, Randolph Chambers, S. Laurie Sanderson
Mucous Contribution To Gut Nutrient Content In American Gizzard Shad Dorosoma Cepedianum, L. L. Holley, M K. Heidman, Randolph Chambers, S. Laurie Sanderson
Arts & Sciences Articles
This study developed and applied an approach to calculate the proportion of fish gut content composed of mucus secreted by the oropharyngeal cavity and gut. The amount of nitrogen in the contents of the foregut (oesophagus and gizzard) and the epibranchial organs of suspension‐feeding American gizzard shad Dorosoma cepedianum was significantly higher than the nitrogen in the homogeneous food source. Using data collected from suspension‐feeding experiments and the nitrogen content of D. cepedianum mucus, a series of equations illustrated that mucus constituted c. 10% of D. cepedianum foregut content and 12% of epibranchial organ content by dry mass. Future quantification …
Particle Retention In Suspension-Feeding Fish After Removal Of Filtration Structures, Jennifer C. Smith, S. Laurie Sanderson
Particle Retention In Suspension-Feeding Fish After Removal Of Filtration Structures, Jennifer C. Smith, S. Laurie Sanderson
Arts & Sciences Articles
The suspension-feeding cichlids Oreochromis aureus (blue tilapia) and Oreochromis esculentus (ngege tilapia) are able to selectively retain small food particles. The gill rakers and microbranchiospines of these species have been assumed to function as filters. However, surgical removal of these oral structures, which also removed associated mucus, did not significantly affect the total number of 11–200 μm particles ingested by the fish. This result supports the hypothesis that the branchial arch surfaces themselves play an important role in crossflow filtration. Both species selectively retained microspheres greater than 50 μm with gill rakers and microbranchiospines intact as well as removed, …
Convergent And Alternative Designs For Vertebrate Suspension Feeding, S. Laurie Sanderson, Richard Wassersug
Convergent And Alternative Designs For Vertebrate Suspension Feeding, S. Laurie Sanderson, Richard Wassersug
Arts & Sciences Book Chapters
In this authoritative three-volume reference work, leading researchers bring together current work to provide a comprehensive analysis of the comparative morphology, development, evolution, and functional biology of the skull.