Hydrostatic pressure affects selective tidal stream transport (STST) in the North Sea brown shrimp (Crangon crangon, L.)

Abstract

The brown shrimp (Crangon crangon) is a highly abundant invertebrate in the North Sea, with its life cycle stages ranging from deep offshore spawning to shallow onshore nursery areas. To overcome the long distances between these two habitats, brown shrimp are suspected to use selective tidal stream transport (STST), moving with the cyclic tide currents towards their preferred water depths. However, it is not known which stimulus actually triggers STST behavior in brown shrimp. In this work, we determined the influence of different hyperbaric pressures on STST behavior of juvenile brown shrimp. Brown shrimp activity was recorded in a hyperbaric pressure chamber that supplied constant and dynamic pressure conditions simulating different depths, with and without a tidal cycle. Subsequent wavelet and Fourier analysis were performed to determine the periodicity in the activity data. The results of the experiments show that STST behavior in brown shrimp varies with pressure and therefore with depth. We further show that STST behavior can be initiated by cyclic pressure changes. However, an interaction with one or more other environmental triggers remains possible. Furthermore, a security ebb-tide activity was identified that may serve to avoid potential stranding in shallow waters and is 'remembered' by shrimp for about 1.5 days without contact with tidal triggers.

Predicting near-term, out-of-sample fish passage, guidance, and movement across diverse river environments by cognitively relating momentary behavioral decisions to multiscale memories of past hydrodynamic experiences

“…Nonetheless, secondary currents (Dinehart and Burau, 2005;Fong et al, 2009;Constantinescu et al, 2011a;Moradi et al, 2019;Yan et al, 2020;Schreiner et al, 2023) and water column heterogeneity should not be entirely discounted as a factor in salmon entrainment (Ramón et al, 2018). Selective tidal stream transport (Creutzberg, 1961) may be driven by multiple factors (Benson et al, 2021;Gross et al, 2021b) including vertically-aligned hydrostatic pressure (Tielmann et al, 2015) and horizontal, cross-sectional gradients in water turbidity (Bennett and Burau, 2015).…”

Advancing presence and changes in body size of brown shrimp Crangon crangon on intertidal flats in the western Dutch Wadden Sea, 1984–2018

“…In addition to seasonal migrations, adult shrimp show tidal migrations: they move to the mudflats with the incoming tide and move to deeper waters again with the outgoing tide (Hartsuyker 1966;Al-Adhub and Naylor 1975). These movements may be triggered by changes in hydrostatic pressure which are sensed by adult shrimp (Tielmann et al 2015). No such movements are known for the settling post-larvae and juveniles, which appear to remain on the intertidal flats during both low and high tide (Janssen and Kuipers 1980).…”

Sanderlinks

“…In addition to seasonal migrations, adult shrimp show tidal migrations: they move to the mudflats with the incoming tide and move to deeper waters again with the outgoing tide (Hartsuyker 1966, Al-Adhub & Naylor 1975. These movements may be triggered by changes in hydrostatic pressure which are sensed by adult shrimp (Tielmann et al 2015). No such movements are known for the settling post-larvae and juveniles, which appear to remain on the intertidal flats during both low and high tide (Janssen & Kuipers 1980).…”