Fish Embryo Vulnerability to Combined Acidification and Warming Coincides with Low Capacity for Homeostatic Regulation

May 20, 2020 | Biology

Reading time: 1 minute

Enjoy your daily Biology industry news fix anytime you want it thanks to Lab.Equipment's freshly curated articles from credible online sources. Read this one first published on the Journal of Experimental Biology:

Flemming Dahlke, Magnus Lucassen, Ulf Bickmeyer, Sylke Wohlrab, Velmurugu Puvanendran, Atle Mortensen, Melissa Chierici, Hans-Otto Pörtner, and Daniela Storch

The vulnerability of fish embryos and larvae to environmental factors is often attributed to a lack of adult-like organ systems (gills) and thus insufficient homeostatic capacity. However, experimental data supporting this hypothesis are scarce. Here, by using Atlantic cod (Gadus morhua) as a model, the relationship between embryo vulnerability (to projected ocean acidification and warming) and homeostatic capacity was explored through parallel analyses of stage-specific mortality and in vitro activity and expression of major ion pumps (ATP-Synthase, Na+/K+-ATPase, H+-ATPase) and co-transporters (NBC1, NKCC1). Immunolocalization of these transporters was used to study ionocyte morphology in newly-hatched larvae. Treatment-related embryo mortality until hatch (+20% due to acidification and warming) occurred primarily during an early period (gastrulation) characterized by extremely low ion transport capacities. Thereafter, embryo mortality decreased in parallel with an exponential increase in activity and expression of all investigated ion transporters. Significant changes in transporter activity and expression in response to acidification (+15% activity) and warming (-30% expression) indicate some potential for short-term acclimatization, although likely associated with energetic trade-offs. Interestingly, whole-larvae enzyme capacities (supported by abundant epidermal ionocytes) reached levels similar to those previously measured in gill tissue of adult cod, suggesting that early-life stages without functional gills are better equipped in terms of io... More of this in the Journal of Experimental Biology (JEB) Blog.

If you are in the Bio industry and are scouting for premium Biology lab equipment for your basic and advanced applications like food production or agriculture, then you have come to the right place. Lab.Equipment distributes an extensive collection of equipment for Biology workrooms. Check out our recommended Biology products available and ready for delivery such as:

Discover what you exactly need for your application by exploring our inventory of products from globally recognized manufacturers such as:

You can also count on Lab.Equipment for a range of quality equipment suitable for applications such as pharmaceutical, veterinary, cannabis, and more. Raise your productivity by discovering precise and accurate laboratory equipment here.

Back To Top
We are fully compliant with the GDPR laws. We promise to safeguard your data and protect your privacy rights.