scholarly journals Engaging the importance of community scientists in the management of an invasive marine pest

2021 ◽  
Vol 75 (1) ◽  
pp. 40-45
Author(s):  
Edwin Grosholz ◽  
Sabrina Drill ◽  
Linda McCann ◽  
Kate Bimrose
Keyword(s):  
Native Species ◽  
Population Characteristics ◽  
Green Crab ◽  
Northern California ◽  
Considerable Effort ◽  
Invasive Pests ◽  
Academic Researchers ◽  
European Green Crab ◽  
The Many ◽  
Population Suppression

The introduction of nonnative invasive pests is among the many threats facing coastal ecosystems worldwide. Managing these pests often requires considerable effort and resources, and community scientists can be essential for providing the capacity needed for management and monitoring activities. In response to the invasion of a Northern California estuary by the predatory European green crab, a collaborative team of academic researchers and community scientists initiated a local eradication program. The green crab is listed among the world's 100 worst invaders, and threatened both native species and commercial shellfisheries. The program dramatically reduced the green crab population over a 5-year period, but it rebounded, which necessitated a switch in project goals from eradication to population suppression. Community scientists were essential for facilitating this switch by providing the necessary capacity to quantify population characteristics and maintain reduced crab populations. The result was a sustainable program that successfully maintained low green crab densities, which will likely improve habitat for native species.

Linking eelgrass decline and impacts on associated fish communities to European green crab Carcinus maenas invasion

2016 ◽  
Vol 548 ◽  
pp. 31-45 ◽  
Author(s):  
K Matheson ◽  
CH McKenzie ◽  
RS Gregory ◽  
DA Robichaud ◽  
IR Bradbury ◽  
...  
Keyword(s):  
Carcinus Maenas ◽  
Fish Communities ◽  
Green Crab ◽  
European Green Crab

scholarly journals Fishing for Targets of Alien Metabolites: A Novel Peroxisome Proliferator-Activated Receptor (PPAR) Agonist from a Marine Pest

Marine Drugs ◽  
2018 ◽  
Vol 16 (11) ◽  
pp. 431 ◽  
Author(s):  
Rosa Vitale ◽  
Enrico D'Aniello ◽  
Stefania Gorbi ◽  
Andrea Martella ◽  
Cristoforo Silvestri ◽  
...  
Keyword(s):  
Native Species ◽  
Molecular Mechanisms ◽  
Ex Vivo ◽  
Invasion Biology ◽  
In Vitro Assays ◽  
Bioactive Metabolites ◽  
Peroxisome Proliferator ◽  
Invasive Pests

Although the chemical warfare between invasive and native species has become a central problem in invasion biology, the molecular mechanisms by which bioactive metabolites from invasive pests influence local communities remain poorly characterized. This study demonstrates that the alkaloid caulerpin (CAU)—a bioactive component of the green alga Caulerpa cylindracea that has invaded the entire Mediterranean basin—is an agonist of peroxisome proliferator-activated receptors (PPARs). Our interdisciplinary study started with the in silico prediction of the ligand-protein interaction, which was then validated by in vivo, ex vivo and in vitro assays. On the basis of these results, we candidate CAU as a causal factor of the metabolic and behavioural disorders observed in Diplodus sargus, a native edible fish of high ecological and commercial relevance, feeding on C. cylindracea. Moreover, given the considerable interest in PPAR activators for the treatment of relevant human diseases, our findings are also discussed in terms of a possible nutraceutical/pharmacological valorisation of the invasive algal biomasses, supporting an innovative strategy for conserving biodiversity as an alternative to unrealistic campaigns for the eradication of invasive pests.

The Imperialism of Free Trade: Lancashire, India, and the Cotton Supply Question, 1861-1865

1966 ◽  
Vol 6 (1) ◽  
pp. 70-96 ◽  
Author(s):  
Peter Harnetty
Keyword(s):  
Free Trade ◽  
The United States ◽  
Climatic Conditions ◽  
Considerable Effort ◽  
Improvement Program ◽  
Alternative Source ◽  
General Validity ◽  
Extensive Program ◽  
The Government ◽  
The Many

It is now more than a decade since John Gallagher and Ronald Robinson first challenged the conventional interpretations of nineteenth-century imperial history and employed the term “The Imperialism of Free Trade” to describe the “ever-extending and intensifying development of overseas regions” — a term which characterizes British imperial policy in the middle decades of the last century. The general validity of this thesis has been illustrated by reference to British policies in India in this period. There was the extensive program of railway construction, financed by British capital at favorable rates of interest guaranteed by the Government of India. There was the manipulation of the Indian tariff in response to pressure from the Lancashire cotton manufacturers. There was the cotton improvement program, the object of which was to relieve Lancashire's dependence on the United States as the major source of its raw cotton. In this case, the desired object was not achieved, despite considerable effort and expenditure sustained over more than a decade. But the approach of civil war in America revived interest in India as an alternative source of supply, notwithstanding the many difficulties that stood in the way. Indian cotton was raised on small holdings as a secondary crop every third or fourth year; its quality was poor; climatic conditions were uncertain; demand was irregular; communications between the cotton-producing areas and the ports were bad; and trade was hampered by lack of a contract law and a bankruptcy act. The Lancashire cotton manufacturers demanded energetic action from the state in overcoming these difficulties.

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