Certainly, few underwater species are as intriguing, or as individualistic, as the horseshoe crab ( Polyphemus occidentalis ). Scientists now regard this chelicerate arthropod, with its odd, heavily-armored appearance, as an evolutionary descendant of both arachnids and the prehistoric sea scorpion. Both career fishermen and physicians prize the horseshoe for its intrinsic worth - the former for its ubiquitousness as fishing bait, the latter for the unique chemical properties of its blood in medicinal usage - but those twin ...
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Certainly, few underwater species are as intriguing, or as individualistic, as the horseshoe crab ( Polyphemus occidentalis ). Scientists now regard this chelicerate arthropod, with its odd, heavily-armored appearance, as an evolutionary descendant of both arachnids and the prehistoric sea scorpion. Both career fishermen and physicians prize the horseshoe for its intrinsic worth - the former for its ubiquitousness as fishing bait, the latter for the unique chemical properties of its blood in medicinal usage - but those twin forms of exploitation have pushed the species to the very brink of extinction and dramatically reduced the numbers of horseshoe crab eggs, which in turn threatens the sanctity of a predatory shorebird called the Red Knot. The PBS-produced Crash - A Tale of Two Species (an episode of the Nature documentary series) investigates the symbiotic relationship between the Red Knot and the Horseshoe Crab, and discusses the prospective ways in which human intervention could alternately bolster or destroy that connection. Nathan Southern, Rovi
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Add this copy of Nature: Crash-a Tale of Two Species to cart. $12.83, very good condition, Sold by beneton rated 4.0 out of 5 stars, ships from Millsboro, DE, UNITED STATES, published 2010 by Questar.
Add this copy of Nature: Crash-a Tale of Two Species to cart. $56.05, good condition, Sold by Wonder Book - Member ABAA/ILAB rated 5.0 out of 5 stars, ships from Frederick, MD, UNITED STATES, published 2008.
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Good. Ex-Rental. Good condition. dvd. Disc slightly scratched. Case Good. Case scuffed. Original artwork may contain stickers or shelfware. Quality guaranteed!
