Some observations of Cancer pagurus Linnaeus, 1758 (Decapoda, Brachyura) in deep water

Bakke, Snorre; Buhl‐Mortensen, Lene; Buhl-Mortensen, Pål

doi:10.1163/15685403-00003857

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…The edible crab, Cancer pagurus, is a commercially important decapod found throughout western Europe from Norway to Portugal, from the intertidal to depths of around 400 m [23]. C. pagurus are heavily exploited throughout their geographic range and are the second most important shellfish fishery in the UK [24].…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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show abstract

“…This verifies what fishers have observed when the edible crabs emerge from great depths. In their study, Bakke et al (2019) have, with an underwater camera, documented edible crab at depths of over 400 meters.…”

Section: The Edible Crab Migration Patterns Published By Ideas Spreadmentioning

confidence: 99%

“…Male and juvenile crabs are less mobile than females. Both males and females prefer deeper waters in the winter, and edible crabs are observed at depths of more than 400 m (Bakke, Buhl-Mortensen & Buhl-Mortensen, 2019). Woll (2005), and Woll, Bakke and van der Meeren (2021) describe what characterizes the edible crab in Norway.…”

Section: Introductionmentioning

confidence: 99%

Bridging the Gap Between Experience-Based Knowledge and the Scientific Knowledge

Ervik

Strømme

2023

IER

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The context for this study was to document fishers’ experience-based knowledge is reliable and can be included in citizen science as supplementary information to scientific research. Fishers’ experience-based knowledge contributes to important understanding of the environment and the marine ecosystem. Hence, fishers’ knowledge over time is not always regarded as supplementary knowledge. There is a lack of information on how fishers have acquired reliable knowledge when they have not had formal scientific education and in what way fishers’ knowledge can be used as empirical data. In this study, a survey was conducted by scientific educator within the fishing community of Mausund in Norway. The survey was limited to specifically targeting fishers' knowledge of the migration pattern of the edible crab (Cancer pagurus) in Sulfjorden, Mausund and Frohavet. This study performs in-depth interviews with five fishers at Mausund. The experience-based knowledge acquired by these fishers is first and foremost learnt through intergenerational learning from fathers, grandfathers, and uncles to sons. The study supports existing research on fishers’ experience-based knowledge, which is professional and very precise. Experience-based and local knowledge can be understood as a knowledge contribution of value to the research field of environment monitoring.

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“…Found over a relatively large geographic area from Norway to Portugal [11,12] C. pagurus inhabits rocky shores in a variety of habitats (e.g. bedrock, coarse sand, kelp holdfasts) from intertidal areas to depths of around 400m [13,14]. A narrow temperature (4 -15°C) and salinity (17 PSU) range may play a role in choice of habitat [13,15,16].…”

Section: Introductionmentioning

confidence: 99%

The Prevalence of Necrotic Black Spot in <i>Cancer pagurus</i> (L.) within a UK Voluntary Marine Reserve.

Scott,

Harsanyi

2024

Preprint

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Black spot disease is associated with the breakdown of chitin by chitinolytic bacteria resulting in extensive black lesions across the body of crustaceans. Black spot is prevalent across most fished crustaceans worldwide. Severely infected individuals are rejected from the fishery resulting in financial loss to both fisher’s and seafood export and processing companies. Ecologically, populations with high infection rates may have increased mortalities resulting in fewer individuals surviving the population. The prevalence and severity of shell disease in the edible crab, Cancer pagurus, of various size classes, was assessed via scaled images taken from crabs sampled within the Berwickshire Marine Reserve, UK. A total of 22.4% of individuals across all size groups were found to contain black spot lesions. Male crabs were more commonly affected (26.21%), with more body parts showing lesions and a greater overall blackspot coverage (1.75%) than females (16.43% and 1% respectively). Crabs under the MLS (140mm) showed a significantly higher black spot coverage, but size did not significantly affect infection rates. Carapace and chelae were the most commonly affected areas. Compared to previous studies the Berwickshire Marine Reserve has a relatively low prevalence of black spot disease in Cancer pagurus.

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Some observations of Cancer pagurus Linnaeus, 1758 (Decapoda, Brachyura) in deep water

Cited by 5 publications

References 11 publications

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

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

Bridging the Gap Between Experience-Based Knowledge and the Scientific Knowledge

The Prevalence of Necrotic Black Spot in <i>Cancer pagurus</i> (L.) within a UK Voluntary Marine Reserve.

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