Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Copepod Feeding Strategy Determines Response To Seawater Viscosity: Videography Study Of Two Calanoid Copepod Species, Abigail Tyrell
Copepod Feeding Strategy Determines Response To Seawater Viscosity: Videography Study Of Two Calanoid Copepod Species, Abigail Tyrell
SoMAS Research Data
Calanoid copepods, depending on feeding strategy, have different behavioral and biological controls on their movements, thereby responding differently to environmental conditions such as changes in seawater viscosity. To understand how copepod responses to environmental conditions are mediated through physical, physiological, and/or behavioral pathways, we used high-speed microvideography to compare two copepod species, Acartia hudsonica and Parvocalanus crassirostris, under different temperature, viscosity, and dietary conditions. Acartia hudsonica exhibited “sink and wait” feeding behavior and typically responded to changes in seawater viscosity; increased seawater viscosity reduced particle-capture behavior and decreased the size of the feeding current. In contrast, P. crassirostris continuously …
Data For Paper "Separating Thermal And Viscous Effects Of Temperature On Copepod Respiration And Energy Budget", Abigail Tyrell, Nicholas Fisher, David Fields
Data For Paper "Separating Thermal And Viscous Effects Of Temperature On Copepod Respiration And Energy Budget", Abigail Tyrell, Nicholas Fisher, David Fields
SoMAS Research Data
Changes in temperature alter the viscosity of fluids, which impacts the force needed to move and the diffusion rates of gases. This is particularly salient for organisms that operate at mid to low Reynolds numbers. In this study, we investigated the independent effects of changes in temperature and viscosity on oxygen consumption rates of two coastal copepods (Acartia tonsa and Parvocalanus crassirostris) and used bioenergetic models to predict how these patterns could influence copepods in the natural environment. We found that only temperature influenced copepod oxygen consumption rates, indicating that copepods were not impacted by reduced oxygen diffusivity …