An introduction to the analysis of teds or turtle excluder devices

Description[ edit ] The carapace of this loggerhead is reddish brown; five vertebral scutes run down the turtle's midline bordered by five pairs of costal scutes. The loggerhead sea turtle is the world's largest hard-shelled turtle, slightly larger at average and maximum mature weights than the green sea turtle and the Galapagos tortoise.

An introduction to the analysis of teds or turtle excluder devices

Abstract Anecdotally it is often said that fishers are the best inventors of marine conservation technologies. In this paper I describe case studies of Turtle Excluder Devices TEDs and dolphin conservation technology, offering empirical evidence that fishers are successful inventors of marine conservation technology.

I describe the Local Inventor Effect, in which adoption of a technology is disproportionately high in the geographic area near the inventor's home.

Further, I present the Successful Inventor Profile for inventors of marine conservation technologies. Turtle Excluder Device, sea turtle, tuna-dolphin, bycatch, inventor, invention, mental model, technology transfer, diffusion of innovations How to cite this article: Profile and influence of the successful fisher-Inventor of marine conservation technology.

The door to acceptance of TEDs by industry was opened when simple, shrimper designed devices were certified. All TEDs in use today are based on the original jellyball excluders, not one designed by non-fishermen.

However, there have been no studies of the inventive power of fishers in general, or of the characteristics that help define what makes one fisher-inventor more successful than another. As sea turtle and other marine species populations continue to decline, in part due to bycatch i.

One of the most well-known examples of marine conservation technologies is the TED, which consists of a hard grid or mesh panel that is placed in a trawl net to direct sea turtles and other large objects out of an escape hole in the net.

The federal government solicited the help of shrimp trawlers and others in the invention effort for TEDs. The initial recruitment techniques were broadcast methods, which allowed contact with the most-but not the best qualified-constituents.

For example, government scientists requested the aid of personal contacts or made broadcast solicitations in public fora, such as shrimping industry association meetings and newspapers.

As a result of these methods, many of the initial industry participants were industry leaders who were interested in the political and management aspects of the shrimp fishery and in some cases had not been active commercial fishers in years.

These individuals could publicise the turtle bycatch problem to other shrimpers, but they did not have the expertise needed to solve the problem.

Turtle excluder device | NOAA Teacher at Sea Blog

A profile of successful fisher-inventors would serve as a search tool to aid targeted recruitment of individuals with skills most pertinent to solving bycatch problems. In so doing, the invention process would become more effective and efficient, possibly decreasing the time between problem identification and commercially practical solutions.

In the case of sea turtle species-with some populations facing extinction in the near future-time is of the essence Spotila et al. In this paper, I examine the case study of TEDs and give evidence of the success of shrimpers as inventors and government scientists as modifiers of TEDs.

I also discuss the positive influence shrimper-inventors have on local adoption of their TEDs.

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I support the findings in the TED case study by presenting a secondary case study of the invention of dolphin conservation technologies to reduce dolphin bycatch in the United States tuna purse seine fishery.

Further, I will suggest that the key characteristics of successful fisher-inventors include their extensive experience with fishing and fabrication, and their ability to engage in mental modelling.

A mental model is a mental representation of a physical reality. These models can be used to run empirical mental simulations for the purposes of reasoning and problem-solving. For example, if one was trying to move a large piece of furniture through a doorway, one could mentally reconstruct the dimensions of the doorway i.

In these case studies, the process of mental modelling allowed the examination of a mechanical representation and its variations, modifications, and flaws.

I will give evidence that three of the most successful fisher-inventors in the TED and tuna-dolphin case studies used mental modelling as well. Methods This research focussed on the history of the TED in the years between when US government research began to reduce sea turtle bycatch and the last year of TED development before major changes in TED regulations.

The research also examined the history in the years in the tuna-dolphin case study dolphin bycatch was first brought to the government's attention inwhile was the last year that a dolphin conservation technology development programme existed within the United States government.

Most of the major developments in dolphin conservation technology for the tuna industry occurred before I gathered data for this study by examining inventions, conducting interviews, and analysing documents.

I conducted 49 on-site semi-structured and unstructured personal interviews with key informants. I conducted interviews in all nine commercial shrimping states in south-eastern United States as well as California, the base of the tuna purse seine fishing fleet, and Washington, a centre for development of dolphin conservation technologies.

These interviews mostly occurred during five, two-week long trips during June to January This is a comprehensive review of some of the obstacles facing the Galt Ocean Mile community's residents. It includes Shore Preservation, Beach Renourishment, Fire Safety, Barrier Island Emergency Room, Automated External Defibrillators, AEDs, Fort Lauderdale Budget, FLPD Crime Statistics, and other issues that concern the Galt Mile .

An introduction to the analysis of teds or turtle excluder devices

of the seabob stock. To this end, all commercial vessels in the fleet are using turtle excluder devices (TEDs) and bycatch reduction devices (BRDs) in their trawl nets.

However, the effectiveness of these devices in reducing the bycatch of vulnerable sharks and rays has not yet been examined.

SECTION Commercial saltwater fishing license requirement for residents; fee; striker exception. (A) For the privilege of taking or landing anadromous fish, saltwater fish, or fisheries products for commercial purposes, a resident must obtain a commercial saltwater fishing license for a fee of twenty-five dollars unless specifically exempted in this article.

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injury and death of sea turtles by shrimp trawlers is a major threat to an introduction to the. Dr Seuss’ Horton Hears A Who and Yertle the Turtle and Other Stories - Everyone is Important in Dr Seuss’ Horton Hears A Who and Yertle the Turtle and Other Stories In many of Dr Seuss’ children’s books, a character is struggling to get his voice heard.

Marine conservation refers to the study of conserving physical and biological marine resources and ecosystem functions. Turtle excluder devices (TEDs) remove a major threat to turtles in their marine environment.

Many sea turtles are accidentally captured, injured or killed by fishing.

The results of teds turtle excluder devices