limpets – Southern Fried Science

Everything about hagfish is the best thing about hagfish, the battle for the deep-sea heats up, parasitic butt snails, and more! Monday Morning Salvage: December 17, 2017

December 18, 2017December 18, 2017 Andrew Thaler

Weekly Salvage

Fog Horn (A Call to Action)

The CDC was given a list of seven banned words for their upcoming budgets. Among the censored words are “science-based” and “evidence-based”, which, of course, are concepts central to the CDC’s mission. I have some thoughts about why this list has appeared at this time. If you think the CDC shouldn’t be censored in their mission to safeguard public health, call your representatives.

Flotsam (what we’re obsessed with right now)

Bird and Moon author Rosemary Mosco is this week’s Hagfish Lover of note: Feeling Sick and Snotty?

Underwater robots reveal the all-you-can-eat-buffet of the deep sea.

A year of brutal hurricanes, the wonderful resilience of limpets, talking about meat consumption, and more! The Monday Morning Salvage: December 4, 2017.

December 4, 2017December 4, 2017 Andrew Thaler

Weekly Salvage

Flotsam (what we’re obsessed with right now)

‘Extremely Active’ 2017 Atlantic Hurricane Comes to a Close – Here’s the Full Season in One Four-Minute Video:

The final news, for now, from the missing Argentinian submarine: Argentine Navy: Water Entered Missing Sub’s Snorkel and Argentina Abandons Rescue Mission for Missing Sub.

The Argentine military submarine ARA San Juan and crew are seen leaving the port of Buenos Aires, Argentina June 2, 2014. Picture taken on June 2, 2014. Armada Argentina/Handout via REUTERS

Founder effects in a deep-sea invasive: Easter Limpets

January 1, 2016January 2, 2016 Andrew Thaler

Uncategorized

On January 1, 2016, the Southern Fried Science central server began uploading blog posts apparently circa 2041. Due to a related corruption of the contemporary database, we are, at this time, unable to remove these Field Notes from the Future or prevent the uploading of additional posts. Please enjoy this glimpse into the ocean future while we attempt to rectify the situation.

Global Norming marches into the deep sea. We’ve been watching with concern the gradual shift towards the normalization of species distribution due to the widespread introduction of marine invasives. Thanks to a general lack human habitation on the seafloor, the deep sea has remained largely exempt from this phenomenon. It takes a lot of technanthropic migration to normalize an ecosystem.

In the past, scientists have observed small numbers of deep-sea species transported into new biogeographic regions on the backs of research submersibles and industrial equipment, hinting at the potential for deep-sea invasion. Thankfully proactive mitigation measures have mostly prevented large scale deep-sea invasions. Range expansion due to climate change is generally considered to be the greater threat to deep-sea ecosystem stability.

In a recent paper, Plough and friends (2040) identify a large-scale species invasion at hydrothermal vents in the Caribbean. Lepetodrilus johnsonii, a limpet species common at hydrothermal vents around the equatorial extent of the East Pacific Rise have established themselves at vent fields around the Mid-Cayman Spreading Center, just south of the Cayman Islands. As the Pacific and Caribbean are separated by continents, it is unlikely that this invasion happened without human assistance.

Using next-generation Yotta+ environmental holome sequencing, Plough and friends were able to trace the invasion to a relatively small founder population, at most 23 individuals, which we’re likely transported sometime in the last 6 years.