Fisheries bycatch of marine animals has been linked to population declines of multiple species, including many sea turtles. Altering the visual cues associated with fishing gear may reduce sea turtle bycatch. We examined the effectiveness of illuminating gillnets with ultraviolet (UV) light-emitting diodes for reducing green sea turtle (Chelonia mydas) interactions. We found that the mean sea t...

The olfactory organ of turtle consists of the upper chamber epithelium (UCE) and the lower chamber epithelium (LCE), detecting air-borne odorants and water-borne odorants, respectively. In this study, we investigated the number of olfactory receptor neurons (ORNs) in the UCE and LCE of soft-shelled turtle in order to find their possible differences among terrestrial, semi-aquatic and highly-aqu...

We have determined that the different plastral scutes (rigid sectional plates found on the plastron, the flat shell structure of a turtle’s ”belly”) of Blanding’s turtle grow at different rates, while scute pairs grow homogeneously. Scute width was used as a new growth measurement to model the growth curve of Blanding’s turtle by fitting exponential and polynomial models. We discovered that the...

Abstract: LOGO is a programming language incorporating turtle graphics, originally devised for teaching computing to young children in elementary and middle schools. Here we advocate the use of LOGO to help introduce some of the basic concepts of computer graphics and computer aided design to undergraduate and graduate students in colleges and universities. We shall show how to motivate affine ...

TURTLE is a real-time UML profile introduced a few years ago to address the analysis, design and deployment of time-constrained systems. The profile has a formal semantics. Further, it is supported by an open source toolkit: TTool. The latter enables formal verification of TURTLE models without specific knowledge of mathematical notations or formal languages. This paper proposes to extend TURTL...

The turtle's shell acts as a protective armor for the animal. By analyzing a turtle shell via finite element analysis, one can obtain the strength and stiffness attributes to help design man-made armor. As such, finite element analysis was performed on a Terrapene carolina box turtle shell. Experimental data from compression tests were generated to provide insight into the scute through-thickne...

The genus Caulerpa is known for its invasion of tropical, subtropical, and temperate coastal waters. Whereas the role of humans as vectors for the introduction of Caulerpa has been well documented, other anthropogenic factors that may mediate the success of an invasion are poorly understood. We provide evidence that a recent invasion of Caulerpa ollivieri into shallow Bahamian seagrass meadows ...

This chapter gives a cursory introduction to the field of Turtle geometry. Developed as part of a programming language, Turtle geometry is used as both an instrument to teach math to children and as a tool for generating pictures using grammars. It is the latter which will be the topic of this chapter. Two definitions of Turtle geometry will be given, as well as an example to illustrate the use...

Substrate utilization by the isolated aerobic (Po2 500 mm Hg) and hypoxic (Po2 50 mm Hg) turtle (Pseudemys scripta) heart was evaluated by retrograde perfusion. During aerobic perfusion, the heart demonstrated active extraction and oxidation of free fatty acid (FFA) even in the presence of exogenous glucose. FFA metabolism was similar to that seen in the mammalian heart and was adequate to meet...

Freshwater turtles are being exploited for meat, eggs, traditional medicine, and pet trade. As a response, turtle farming became a booming aquaculture industry in the past two decades, specifically in the southeastern states of the United States of America (US) and across Southeast Asia. However, US turtle farms are currently producing turtles only for the pet trade while commercial trappers re...