Effects of exposure to air on the escape behaviour and haemolymph chemistry of the South African Cape lobster, Jasus lalandii

Haupt, Philip; Brouwer, S. L.; Branch, George M.; GÄde, Gerd

doi:10.1016/j.fishres.2006.07.004

Cited by 20 publications

(4 citation statements)

References 25 publications

(45 reference statements)

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“…When individuals are discarded at sea, the physiological disruption and fatigue that are induced by the fishing process might cause detrimental behavioural effects. Morbidity and torpidity, together with impairment in tail flipping activities, were, in fact, recorded in decapods that had been discarded at sea (Haupt et al, 2006;Ridgway et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Onset of and recovery from physiological stress in Liocarcinus depurator after trawling and air exposure under different seasonal conditions

et al. 2011

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The onset of and recovery from physiological stress in Liocarcinus depurator (Decapoda: Portunidae), that were trawled and subjected to emersion during fishing activities, was analysed in a field study in the Northern Adriatic Sea. Our working hypothesis intended to assess the development of physiological impairment due to air exposure during sorting operations, and the possible recovery trajectories after the return to sea of this by-caught species. The protocol we used included experimental trawling and quantification of physiological stress indicators (haemolymph concentrations of L-lactate, D-glucose, ammonia and pH) under different seasonal conditions. Immediately after being caught, when the fishing net was emptied on board, L. depurator showed higher physiological imbalance in the summer vs. winter experiments, highlighting the immediate effect of temperature shock due to the difference in temperature between the sea bottom and the deck (15-18 and 2 degrees C in summer and winter, respectively). Experimental animals in the permanently emersed condition exhibited a progressive disruption of homeostasis in both seasons, as confirmed by a significant increase in lactate and a decrease in the pH of the haemolymph as a function of the emersion time. Ammonia levels were almost stable in the summer, when the physiological limits of this metabolite were reached immediately after animals were caught. In the winter, a significant increase in ammonia was observed over the time. This pattern can be attributed to the impairment of gill function, resulting in suffocation (manifested by marked haemolymph acidosis) and reduced ammonia excretion. Glucose concentration was revealed to be stable during air exposure in both seasons, though a higher concentration was recorded in the summer compared to the winter. The recovered individuals tended to return to pre-caught values for all of the haemolymph parameters we measured, though with different trajectories in the two seasons. From these results, we conclude that temperature shock, coupled with air exposure, influenced the ultimate stress level of this species to a greater extent than other effects of fishing

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Section: Discussionmentioning

confidence: 99%

Onset of and recovery from physiological stress in Liocarcinus depurator after trawling and air exposure under different seasonal conditions

et al. 2011

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“…For example, harvesting of South African rock lobster (Jasus lalandii) often results in capture of both undersized individuals and breeding females, which cannot legally be retained and must be released (Pollock et al, 2000). However, individuals that are released are often sufficiently stressed that their escape responses are retarded (Haupt et al, 2006), increasing the chances of predation, and the eggs of berried females are damaged by exposure to air (Bergh and Johnston, 1992;Treble et al, 1998;Schoeman et al, 2002). Under these circumstances, closure of the fishery during the breeding period will increase reproductive success and is a valid management option.…”

Section: Examples and Object Lessonsmentioning

confidence: 99%

Are closed fishing seasons an effective means of increasing reproductive output?

2007

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“…Previous studies have demonstrated that desiccation could cause serious metabolic and respiratory disturbances of organisms (Johnson & Uglow, 1985; Omori, Irawan & Kikutani, 1998; Haupt et al, 2006). Trushenski et al.…”

Section: Introductionmentioning

confidence: 99%

Physiological and immunological responses of sea cucumber Apostichopus japonicus during desiccation and subsequent resubmersion

Hou

Jin

Jiang

et al. 2019

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Desiccation is one of the extremely stressful situations experienced by aquatic animals, and sea cucumber usually suffers from desiccation stress during transportation without water. The present study was conducted to evaluate the effect of desiccation and subsequent resubmersion on physiological stress, oxidative damage, antioxidant status and non-specific immune response of Apostichopus japonicus, providing valuable information on the health management of sea cucumber culturing. Control and desiccation groups were set up, and each group has three replicates. After 1, 3 and 6 h of desiccation, individuals were resubmersed in aerated seawater for a 24 h recovery in three batches, which were represented as D1, D3 and D6, respectively. The results showed that glucose level in coelomic fluid of sea cucumber significantly decreased after desiccation, whereas lactate, cortisol and osmolality showed remarkable ascending trends. Thereafter, all stress parameters gently recovered towards normal levels as control group during 24 h resubmersion. The prolonged desiccation at D6 treatment induced the significant increases of malondialdehyde (MDA) and reactive oxygen species (ROS) contents, as well as relatively lower superoxide dismutase (SOD) and catalase (CAT) activities. During the period of desiccation and subsequent resubmersion, sea cucumber adjusted antioxidant defense to reduce the concentrations of MDA and ROS as a strategy for protecting against oxidative damage. Desiccation also had significant effects on non-specific immune parameters (total coelomocytes counts, TCC; complement C3; total nitric oxide synthase, T-NOS; lysozyme, LSZ; alkaline phosphatase, AKP) of A. japonicus, which could be recovered to some extent during resubmersion. In conclusion, less than 6 h of desiccation did not induce irreparable damage to sea cucumber, and was recommended for handling and shipping live sea cucumbers.

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Effects of exposure to air on the escape behaviour and haemolymph chemistry of the South African Cape lobster, Jasus lalandii

Cited by 20 publications

References 25 publications

Onset of and recovery from physiological stress in Liocarcinus depurator after trawling and air exposure under different seasonal conditions

Onset of and recovery from physiological stress in Liocarcinus depurator after trawling and air exposure under different seasonal conditions

Are closed fishing seasons an effective means of increasing reproductive output?

Physiological and immunological responses of sea cucumber Apostichopus japonicus during desiccation and subsequent resubmersion

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