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Full-Text Articles in Marine Biology
What Can Computational Modeling Tell Us About The Diversity Of Odor-Capture Structures In The Pancrustacea?, Lindsay D. Waldrop, Yanyan He, Shilpa Khatri
What Can Computational Modeling Tell Us About The Diversity Of Odor-Capture Structures In The Pancrustacea?, Lindsay D. Waldrop, Yanyan He, Shilpa Khatri
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
A major transition in the history of the Pancrustacea was the invasion of several lineages of these animals onto land. We investigated the functional performance of odor-capture organs, antennae with olfactory sensilla arrays, through the use of a computational model of advection and diffusion of odorants to olfactory sensilla while varying three parameters thought to be important to odor capture (Reynolds number, gap-width-to-sensillum-diameter ratio, and angle of the sensilla array with respect to oncoming flow). We also performed a sensitivity analysis on these parameters using uncertainty quantification to analyze their relative contributions to odor-capture performance. The results of this analysis …
Scaling Of Olfactory Antennae Of The Terrestrial Hermit Crabs Coenobita Rugosus And Coenobita Perlatus During Ontogeny, Lindsay D. Waldrop, Roxanne M. Bantay, Quang V. Nguyen
Scaling Of Olfactory Antennae Of The Terrestrial Hermit Crabs Coenobita Rugosus And Coenobita Perlatus During Ontogeny, Lindsay D. Waldrop, Roxanne M. Bantay, Quang V. Nguyen
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Although many lineages of terrestrial crustaceans have poor olfactory capabilities, crabs in the family Coenobitidae, including the terrestrial hermit crabs in the genus Coenobita, are able to locate food and water using olfactory antennae (antennules) to capture odors from the surrounding air. Terrestrial hermit crabs begin their lives as small marine larvae and must find a suitable place to undergo metamorphosis into a juvenile form, which initiates their transition to land. Juveniles increase in size by more than an order of magnitude to reach adult size. Since odor capture is a process heavily dependent on the size and speed …
Ontogenetic Scaling Of The Olfactory Antennae And Flicking Behavior Of The Shore Crab, Hemigrapsus Oregonensis, Lindsay D. Waldrop
Ontogenetic Scaling Of The Olfactory Antennae And Flicking Behavior Of The Shore Crab, Hemigrapsus Oregonensis, Lindsay D. Waldrop
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Malacostracan crustaceans such as crabs flick antennae with arrays of olfactory sensilla called aesthetascs through the water to sense odors. Flicking by crabs consists of a quick downstroke, in which aesthetascs are deflected laterally (splayed), and a slower, reversed return stroke, in which aesthetascs clump together. This motion causes water to be flushed within and then held in between aesthetascs to deliver odor molecules to olfactory receptors. Although this odor sampling method relies on a narrow range of speeds, sizes, and specific arrangements of aesthetascs, most crabs dramatically change these during ontogeny. In this study, the morphometrics of the aesthetascs, …