Mortality estimates of the intertidal purple snail Plicopurpura pansa in the Baja California Peninsula, Mexico.(Report)

Journal of Shellfish Research | December 1, 2007| | Copyright

ABSTRACT The intertidal purple snail Plicopurpura pansa was intensively exploited for "Tyrian Purple," leading to declining populations and prohibition by the Mexican government of commercial exploitation. A probable cause for the decline is the difficulty of the snails to reattach themselves fast enough before being washed away by the high impact waves during high tides after being removed from the rocks to obtain 'ink.' To assess this hypothesis, six experiments were conducted at two rocky beaches in the Baja California Peninsula. Total mortality rates were estimated by a ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Cocoon Deposition and Hatching in the Aquatic Leech, Theromyzon tessulatum (Annelida, Hirudinea, Glossiphoniidae)
Magazine article from: The American Midland Naturalist ; ...leech and the secreted cocoon. Similar to cocoons of other animals, the...TM) (PETsMART). Cocoon and fluid isolation.-Cocoons were detached from glass...were used to separate cocoons and to tear the cocoon wall to release embryos...
Silkworm cocoon scarcity makes China apparel, fabric prices soar.
Magazine article from: Daily News Record ; ...and distribution of silk cocoons in much the same way grain...production was handled. Cocoon farmers sold directly...Many poor-quality cocoons were sold. The hoarding of quality cocoons was rampant. Cocoon prices have since increased...
The roles of insect cocoons in cold conditions
Magazine article from: European Journal of Entomology ; ...from ice crystals on the cocoon surface or its surroundings...some aquatic species, cocoons appear to limit damage...some species, robust cocoons or complex structures impede natural enemies. Cocoon silk has anti-bacterial...fungal actions. Other cocoons are more or less waterproof...
Shortage in China of silkworm cocoons is increasing prices.
Magazine article from: WWD ; ...and distribution of silk cocoons in much the same way it...and cotton production. Cocoon farmers sold directly to...out. Many poor-quality cocoons were sold. Hoarding of quality cocoons was rampant. Cocoon prices have since increased...
Cocoon Innovations Announces a New Concept in Organization Available Exclusively Online.
PR Newswire ; NEW YORK, May 5 /PRNewswire/ -- Cocoon Innovations, LLC announces the launch...successful introduction in January at CES, Cocoon's full range of products, which offer...design, materials and color. With each Cocoon bag, we have seamlessly married stylish...
Composite quality index of silk cocoons--application of discriminant analysis.
Magazine article from: Journal of Academy of Business and Economics ; ...of raw silk, cocoons are transacted...testing and the cocoon price is purely...the quality of cocoons are described below: Single cocoon weight (SCW...average weight of a cocoon. This is usually...by selecting 25 cocoons at random, then...
Impact of quality attributes on Mulberry cocoon prices in Karnataka
Magazine article from: Indian Journal of Agricultural Economics ; ...1993). As mulberry cocoons are traded in the Government regulated cocoon markets through open...The Government Cocoon Market, Ramanagaram...market for mulberry cocoons in India. As the cocoons marketed in Government cocoon markets in Karnataka...
The $750,000 bet.(Cocoon House, a shelter for runaway and throwaway teens promised the money from the Bill and Melinda Gates Foundation if it can raise $2.25 million)
Magazine article from: Everett Business Journal ; Cocoon House, a shelter for runaway and throwaway...foundation of Microsoft Corp., promised Cocoon House the money after the shelter submitted...an effort to fund its capital campaign. Cocoon House wants to raise $3.6 million for...
Brood attending by females of the hyperparasitoid Trichomalopsis apanteloctena (Hymenoptera: Pteromalidae) on cocoon clusters of its host, Cotesia kariyai (Hymenoptera: Braconidae) and its effects on reproduction, development and survival
Magazine article from: European Journal of Entomology ; ...during which the cocoons were guarded. To...up time for a host cocoon brood, hyperparasitoid...access to 24 h-old cocoon clusters, each containing...100 individual cocoons. Ninety percent...encountering a host cocoon cluster, Lysibia...most or all of the cocoons in a single visit...
Proving to be 'Not Just Another Bag,' COCOON INNOVATIONS Introduces a New Concept in Organization.
PR Newswire ; ...NEW YORK, Jan. 20 /PRNewswire/ -- Cocoon Innovations, LLC announced at the 2009...With an intelligent, functional design, Cocoon's full range of products creates a place...lives can be kept safe and organized. Cocoon products are an ideal solution for protecting...

Find more facts and information related to the article "Mortality estimates of the intertidal purple ..."