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The Problem with Migration
— Mark Harding, 17 November, 2011
Our planet used to be a more migratory place than it is today. Sadly some of the greatest land migrations no longer occur due routes being occupied by farms or cities or criss crossed by highways. Some terrestrial migrations still occur such as the amazing marathon undertaken by European swallows migrating to Africa and the Indian subcontinent. The best migrations however are happening in the ocean, with many megafauna species migrating vast tracts of open ocean, in some cases such as certain whale species, the great white, the basking shark, these big guys can migrate half way around the planet. Whilst it might be considered that such a trait can render a species indelible in the public minds eye, migration also presents those charged with studying them a few problems. If it can be ascertained that saving a species in one country is beneficial, there are examples out there of real and very valuable conservation initiatives making changes upon the legislative slate. However, if the species, so protected in one country, migrates, then it is only protected whilst it is within the boundaries of that country. Once it is outside, on the way to wherever it goes, it is as at risk as if never protected. The only real way to protect such migratory species are via international treaties such as CITES listing, or listing on a CMS appendicies as I believe may happen with Manta birostris this month at the CMS COP in Bergen, Norway. With the mantas I am involved with in the Pacific, sits a perfect example. Protected in Ecuador since 2010 after an explosion in mobula catches inspired a local reaction and brought pressure upon the government into prompt action, mantas are without protection in the neighbouring country of Peru. On a recent visit there, I saw first hand incidence of multiple mobula catches, and met face to face a fisherman that claims to be taking over 100 giant manta rays per season. The guy in the top image was our taxi driver on one day, who decided to buy a mobula wing for his lunch. Mobula and mantas all go for local trade within Peru, sold for a regional dish known as chinquirito. It is a type of dried ceviche dish of which ray wings are a sought after, primary ingredient. My aim for the next few years will be to see how I might help the local parties within Peru to bring about a change in attitude towards mantas and mobulas, so that these migratory species can continue their inspiring existence for many years to come.
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