Month: July 2018

[Research news] Live staining of silverside neuromasts at URI

Posted on July 27, 2018July 27, 2018 by Hannes Baumann

By Emma Cross.

23 Juli 2018. Yesterday Hannes and Emma took a short road trip to the University of Rhode Island to visit Professor Jacqueline Webb’s lab to learn about in vivo fluorescent imaging.

This technique involves placing live fish in a fluorescent mitrochondrial stain for 5 minutes before imaging different areas of the fish under a dissecting microscope equipped with an epiflourescence light source. This allowed us to visualize small sense organs called neuromasts located in tubular canals in the head, trunk and tail, which form the fish sensory lateral line system used to detect water flows.

We are interested to see if high CO₂ conditions affect these neuromasts in the Atlantic silverside, which could impact their critical schooling behaviors.

Take a look at some of the stunning images below! Thank you to Jackie and all the lab for a fun-filled day!

[New publication] Complex CO2 x temperature effects in Menidia offspring

Posted on July 20, 2018January 4, 2022 by Hannes Baumann

20 July 2018. We are happy to announce that Diversity just published Chris Murray’s paper on complex CO₂ x temperature effects in Atlantic silverside offspring. The paper synthesizes 5 large multistressor experiments conducted since 2014, finding evidence for the large CO₂ tolerance in this species across a large temperature range.

Congrats, Chris, to the second chapter published!

Murray, C.S. and Baumann, H. You better repeat it: complex temperature × CO₂ effects in Atlantic silverside offspring revealed by serial experimentation. Diversity 10:69

MurrayBaumann-Fig1 — *M. menidia*. Offspring responses to control (blue), high (red), and extreme (green) CO₂ conditions at four temperatures across five CO₂ × temperature factorial experiments. Traits include embryo survival (A–E), hatch length (F–I), larval survival (J–N) and larval growth rate (O–R). Individual replicates are represented by small faded circles. Treatment means (±SD) are depicted by large, bold circles and connected by dotted lines. Note: different scales used for hatch length measurements due to differences in sample timing; panels F and G use 1dph length Y axis (left) while panels H and I use hatch length Y axis (right).

[Lab news] Baumann and Dam labs at the Gordon Research Conference

Posted on July 18, 2018 by Hannes Baumann

WatervilleValley — The beautiful venue of the Waterville Valley Hotel in New Hampshire

OVH-GRCtalk — Hannes introduced the Ocean Variability Hypothesis

GRC2018-Phil-HB — Phil Munday and Hannes chatting along the beautiful hike of Cascade Path

19 July 2018. Members of the Baumann and Dam labs cherished the opportunity to participate in the Ocean Global Change Biology Gordon Research Conference in Waterville Valley, NH.

The particularly intimate format of the Gordon Research Conference was wonderfully conducive to listening to groundbreaking science in form of keynote lectures and posters and to network with colleagues from all over the world. While Hannes gave a keynote lecture about experimental progress in assessing fish sensitivity to marine climate change, Chris, Emma, Jimmy and Hans presented their research all throughout the week during the poster sessions. The beautiful setting of the conference in New Hampshire’s White Mountains and the relaxed atmosphere were all contributing to one of the most unique conference experiences all year.

Talks and posters presented:

Baumann H. Using experiments to assess the sensitivity of fish to marine climate change: progress and knowledge gaps. Invited keynote talk.

Murray, C.S., Wiley, D., and Baumann H. Sand lance offspring (Ammodytes dubius) show high sensitivity to combined climate stressors. Poster.

Cross, E.L., Peck, L., and Harper, E. Brachiopod resilience: thicker shells offset dissolution under future ocean acidification and warming. Poster.

Dam, H.G., DeMayo, J.A., Park, G., He, X., Finiguerra, M., Baumann H., and Pespeni, M. Rapid adaptation of a marine copepod to a greenhouse world. Poster.

DeMayo, J.A., Park, G., Norton, L., Finiguerra, M., Baumann H., and Dam, H.G. Costs of adaptation to a greenhouse world for the copepod, Acartia tonsa. Poster.

Baumann-Damlab1 — The Baumann & Dam lab at the GRC hike

[Lab news] Baumann lab attends the Larval Fish Conference in Victoria

Posted on July 2, 2018July 2, 2018 by Hannes Baumann

Holding the fort at the Rankin lab were Emma and Sydney, who did an excellent job. Thank you guys!

Victoria08 — The Delta Victoria Ocean Pointe Resort was the conference venue

Victoria10 — Before the conference, we all attended a workshop on larval fish identification

https://www.fishersci.com/shop/products/fisherbrand-class-a-clear-glass-threaded-vials-attached-caps-pe-poly-seal-cone-liner-8/14955326 — Whale-watching with Corinne, Julie & Chris

Here is how Julie experienced her first LFC:

Ever since attending the American Fisheries Society conference in 2014, I’ve wanted to go to another fish-focused conference. I was lucky enough to attend the 42nd annual Larval Fish Conference this year in Victoria, British Columbia, and it surpassed all my expectations. The week started off with a larval fish identification workshop where we got to learn techniques from renowned larval fish experts (and see some really cool fish larvae!). The talks were impressive and thought-provoking, providing many new ideas for research and how to give an engaging talk. My favorite part was meeting all the larval fish ecologists whose publications I’ve been reading for my thesis. I spent most of my evenings exploring Victoria with other grad students attending the conference and left with many new friends from institutes all over the world! The trip ended with a whale watch, where we saw a pod of 5 Orcas. Overall, the Larval Fish Conference was a great experience that I hope to someday attend again!

Oral presentations:

Pringle, J. and Baumann, H. Sex-specific growth and mortality patterns in juvenile Atlantic silversides (Menidia menidia) from Connecticut waters. Talk. 42nd Larval Fish Conference, Victoria, BC, Canada 24-28 June 2018

Murray, C.S., Wiley, D., and Baumann, H. Early life stages of the northern sand lance Ammodytes dubius show high sensitivity to acidification and warming in a CO₂ × temperature factorial experiment. Talk. 42nd Larval Fish Conference, Victoria, BC, Canada 24-28 June 2018

Victoria04 — Harbor front with Parliament building

Victoria06 — Local celebrity, the one eyed seal

[Lab video] How a new silverside experiment starts

Posted on July 2, 2018 by Hannes Baumann

29 June 2018. A new experiment with Atlantic silversides (Menidia menidia) starts and as usual, it’s an all hand on deck operation. This time, we have Chris Tsang shadowing all of us and Emma professionally explaining the process.

Have a look for yourself!