Baseline measurements of physiological and behavioural stress markers in the commercially important decapod Cancer pagurus (L.)

Scott, K. J.; Harsanyi, Petra; Lyndon, Alastair Robert

doi:10.1016/j.jembe.2018.07.001

Cited by 9 publications

(13 citation statements)

References 56 publications

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“…The edible crab is a nocturnal forager, with movements and metabolic activity being very much reduced during daytime (Ansell 1973;Aldrich 1975;Karlsson and Christiansen 1996;Skajaa et al 1998;Scott et al 2018). This is also supported by our results (Figure 3 and Figure 4) -at the onset of light, crabs consistently moved toward the warm end of the gradient where they stayed largely inactive during daytime.…”

Section: Discussionsupporting

confidence: 87%

Thermal behaviour of edible crab Cancer pagurus Linnaeus, 1758 in coastal Norway

2019

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Ocean warming drives latitudinal shifts in the distribution of ectotherm species. The rate and magnitude of such shifts are constrained by physiology and behavioural thermoregulation. Here, we investigated the thermal preference and lower critical temperature (CTmin) in female edible crab Cancer pagurus, a decapod crustacean with an ongoing northward dispersal along the Norwegian coast. The temperature selected by individual crabs from a northern (latitude ~69°N) and southern (latitude ~62°N) location was examined in a horizontal gradient (5.5-14.5°C) under a simulated day and night light regime. Irrespective of origin, crabs showed pronounced responses to the light cycle – during the day crabs stayed inactive in the warm end of the gradient but during night they actively explored the entire gradient. A preferred temperature of ~13 °C (measured as mode of loggings) was identified for crabs at both locations. Righting reflex experiments of crabs exposed to a rapid temperature drop (7 - 1 °C at -0.1 °C/min) identified a CTmin of ~1.3 °C (i.e., the temperature at which 50% of crabs failed to right from an up-side-down position), and with no significant difference between locations (p > 0.05). Our results provide important information about the functional characteristics of edible crab, and are discussed in context of the biology and ongoing northward dispersal of the species.

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Section: Discussionsupporting

confidence: 87%

Thermal behaviour of edible crab Cancer pagurus Linnaeus, 1758 in coastal Norway

2019

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“…In crustaceans, L-Lactate and D-Glucose cycle together under normal conditions. L-Lactate levels rise during periods of high locomotor activity, resulting in an increased glucose metabolism [41]. At the same time, D-Glucose levels decrease due to the increased oxidation for ATP production [44].…”

Section: Discussionmentioning

confidence: 99%

“…The video files were then analysed from 23:00 p.m.-06:00 a.m., the period during which this species is most active, using Solomon Coder (beta version 17.03.22) to determine the percentage of time spent in the shelters or free roaming within the tank. Time spent within the shelters or free roaming within the tank was calculated as a percentage of the total trial time (420 min) [41].…”

Section: Behavioural Analysis Shelter Selectionmentioning

confidence: 99%

Exposure to Electromagnetic Fields (EMF) from Submarine Power Cables Can Trigger Strength-Dependent Behavioural and Physiological Responses in Edible Crab, Cancer pagurus (L.)

Scott¹,

Harsanyi

Easton³

et al. 2021

JMSE

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The current study investigated the effects of different strength Electromagnetic Field (EMF) exposure (250 µT, 500 µT, 1000 µT) on the commercially important decapod, edible crab (Cancer pagurus, Linnaeus, 1758). Stress related parameters were measured (l-Lactate, d-Glucose, Total Haemocyte Count (THC)) in addition to behavioural and response parameters (shelter preference and time spent resting/roaming) over 24 h periods. EMF strengths of 250 µT were found to have limited physiological and behavioural impacts. Exposure to 500 µT and 1000 µT were found to disrupt the l-Lactate and d-Glucose circadian rhythm and alter THC. Crabs showed a clear attraction to EMF exposed (500 µT and 1000 µT) shelters with a significant reduction in time spent roaming. Consequently, EMF emitted from MREDs will likely affect crabs in a strength-dependent manner thus highlighting the need for reliable in-situ measurements. This information is essential for policy making, environmental assessments, and in understanding the impacts of increased anthropogenic EMF on marine organisms.

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“…Activity levels are higher during the night when foraging mainly occurs. Small crabs are more active during both day and night compared to medium and large crabs (Scott et al, 2018, Stensmyr et al, 2005.…”

Section: Biology and Habitatmentioning

confidence: 94%

Ecology of the brown crab (Cancer pagurus) : and production potential for passive fisheries in Dutch offshore wind farms

Tonk¹,

Rozemeijer²

2019

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Baseline measurements of physiological and behavioural stress markers in the commercially important decapod Cancer pagurus (L.)

Cited by 9 publications

References 56 publications

Thermal behaviour of edible crab Cancer pagurus Linnaeus, 1758 in coastal Norway

Thermal behaviour of edible crab Cancer pagurus Linnaeus, 1758 in coastal Norway

Exposure to Electromagnetic Fields (EMF) from Submarine Power Cables Can Trigger Strength-Dependent Behavioural and Physiological Responses in Edible Crab, Cancer pagurus (L.)

Ecology of the brown crab (Cancer pagurus) : and production potential for passive fisheries in Dutch offshore wind farms

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