Northern shrimp from multiple origins show similar sensitivity to global change drivers, but different cellular energetic capacity

Abstract

Species with a wide distribution can experience regionally a wide range of environmental conditions, to which they can acclimatize or adapt. Consequently, the geographic origin of an organism can influence its responses to environmental changes, and therefore its sensitivity to combined global change drivers. This study aimed at determining the physiological responses of the northern shrimp Pandalus borealis, at different levels of biological organization and from four different geographic origins, exposed to elevated temperature and low pH to define its sensitivity to future ocean warming (OW) and acidification (OA). Shrimp sampled within the northwest Atlantic, were exposed for 30 days to combinations of three temperature (2, 6 or 10 °C) and two pH levels (7.75 or 7.40). Survival, metabolic rates, whole-organism aerobic performance and cellular energetic capacity were assessed at the end of the exposure. Our results show that shrimp survival was negatively affected by temperature above 6 °C and low pH, regardless of their origin. Additionally, shrimp from different origins show overall similar whole-organism performances: aerobic scope increasing with increasing temperature and decreasing with decreasing pH. Finally, the stability of aerobic metabolism appears to be related to cellular adjustments specific to shrimp origin. Our results show that the level of intraspecific variation differs among levels of biological organization: different cellular capacities lead to similar individual performances. Thus, the northern shrimp sensitivity to OW and OA is overall comparable among origins. Nonetheless, shrimp vulnerability to predicted global change scenarios for 2100 could differ among origins due to different regional environmental conditions.

Diving into broad-scale and high-resolution population genomics to decipher drivers of structure and climatic vulnerability in a marine invertebrate

“…This juxtaposition creates a form of “double jeopardy” for P. borealis , emphasizing unexpected challenges in the face of current and ongoing climate change. Although the southern regions already experience suboptimal environmental conditions, these populations, despite its high adaptive genetic variation, likely lack the metabolic functions needed to withstand warmer conditions (Ouellet et al 2017; Leung et al 2023; Guscelli et al 2023). In contrast, P. borealis from NFL and ARC regions are relatively less vulnerable to climate change based on the genomic offset, while at the same time presenting lower adaptive genetic diversity (Fig.…”

“…The GOM population is severely depleted (ASMFC 2021), and recent abundance indices in the SS and GSL regions indicate important declines in biomass over the last decade (DFO 2023a(DFO , 2023b. Increased temperature was identified as an important factor affecting the survival of pelagic larval stages and adults of P. borealis in common garden experiments (Ouellet et al 2017;Leung et al 2023;Guscelli et al 2023). It is important to note that genomic offset analyses do not explicitly account for demographic processes such as gene flow and assume an equilibrium in allele-environmental frequencies (Waldvogel et al 2020;Rellstab et al 2021), which may limit their ability to accurately reflect genomic variation in vulnerability to climate change.…”

“…Under laboratory conditions, larvae hatch earlier and develop faster at higher temperature, but eggs show reduced hatching success (Brillon et al 2005; Ouellet and Chabot 2005; Daoud et al 2010; Arnberg et al 2013). Similarly, adults show higher metabolic rate but lower survival under elevated temperature (Chemel et al 2020; Guscelli et al 2023). The response to changing temperature, however, is not uniform within the species range.…”

Diving into broad‐scale and high‐resolution population genomics to decipher drivers of structure and climatic vulnerability in a marine invertebrate

“…This juxtaposition creates a form of 'double jeopardy' for P. borealis, emphasizing unexpected challenges in the face of current and ongoing climate change. Although the southern regions already experience suboptimal environmental conditions, these populations, despite its high adaptive genetic variation, likely lack the metabolic functions needed to withstand warmer conditions (Guscelli et al, 2023;Leung et al, 2023;Ouellet et al, 2017). In contrast, P. from common garden experiments should be further explored to characterize the extent of this impact (Waldvogel et al, 2020).…”

“…Under laboratory conditions, larvae hatch earlier and develop faster at higher temperatures, but eggs show reduced hatching success (Arnberg et al, 2013;Brillon et al, 2005;Daoud et al, 2010;Ouellet & Chabot, 2005). Similarly, adults show higher metabolic rates but lower survival under elevated temperatures (Chemel et al, 2020;Guscelli et al, 2023). The response to changing temperature, however, is not uniform within the species range.…”