Shrinking Conch Shells?
- José H. Leal
- Mar 5, 2021
- 1 min read
Shells preserved in ancient middens throughout the planet are good evidence that humans have been eating seafood for thousands of years. And our fondness for hooking the largest fish, shucking the largest oysters, and netting that jumbo shrimp has probably been around since time immemorial.
To test the hypothesis of whether intense foraging for larger versus smaller individuals of the same species may in the long run drive the species size to decrease, Alexis Sullivan (Penn State University) and her collaborators set out to study the dimensions and genetics of modern and ancient shells of the West Indian Fighting Conch, Strombus pugilis. The premise is that smaller individuals are the survivors, whereas larger ones get eliminated by constant harvesting.
The West Indian Fighting Conch has been historically gathered for food in several areas of the Caribbean and northern South America, and its shells preserved in middens throughout the region. Working at the Smithsonian Bocas del Toro Research Station in Panama, Sullivan developed, with local staff scientists, special techniques to consistently extract DNA from conchs from 1,000-year-old archaeological sites, and from more than 7,000-year-old conch shells! The goal is to assess whether the reduction in size through time can be associated with particular genetic changes. And, in the process of doing so, Sullivan and her collaborators developed novel and valuable techniques to extract DNA from shells. Read the Smithsonian release and papers here.
According to their needs, a lot of students need educational support and a better learning environment. Online learning is difficult for students who have social anxiety. They suffer in the research as a result of growing strain and pressure in addition to social anxiety. Students' learning and health may suffer as a result. Students can learn with knowledgeable and committed instructors virtually thanks to online classes in the USA. To overcome any form of educational anxiety, students who find it difficult to master the subject can Do My Online Class.
Students can study at their own time with online courses. Students can learn in an interactive atmosphere with the help of online classes. They are given the best learning resources on…
As you try to meet deadlines and balance many obligations, you might think, "Let us check". To find out if there is a website that can help me with my math assignment, you search and type pay someone to do my online math class for me on a search engine. It's surprising that you find a lot of websites that serve your needs. Achieving good academic results requires you to conserve your individuality in your assignments. Plagiarism, both intentional and unintentional, can damage your academic reputation and cause serious issues. While it is not always possible to avoid plagiarism in a math assignment, there are approaches that can be taken in order to avoid losing your own ability to write.
Although summer vacations are often associated with resting, vacationing, and lazing around, you can also learn new things by remaining innovative, especially if you're traveling for work or school. It makes sense for students who are taking classes or online courses to take advantage of the break so they can catch up, get ahead, or try something new. Those who are accounts students and want to learn more about the subject but are not able to spend time learning new skills can ask can I pay someone to do my online class for me? so that they can explore the subject without feeling guilty.
If you are planning to pay someone to take my class, it is important to keep several important things in mind. Make sure that everything is done to make it a smooth experience and to save oneself from academic dishonesty. Unfortunately, not all such services are reliable. Therefore, it is very important to carry out thorough research on a reputable company with positive testimonials and proven success in taking classes for absentee students. You can choose a reliable company just as Take My Online Course For Me; this company offers very good online class services with so much experience and comprehensive vetting stages for academic assistance. Also offers clear pricing and 24/7 support for trustworthy class help.
Students often seek to take my online digital electronics class due to the subject's inherent challenges. The coursework can be time-consuming and difficult, leading students to look for support in managing their academic responsibilities. As a result, many turn to online class help sites, requesting, please do my online digital electronics class for me.