FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W58444988> ?p ?o ?g. }

• W58444988 abstract "The southern and western rock lobsters (Jasus edwardsii and Panuliruscygnus, respectively) form the basis of two of the major seafood export industriesin Australia; between them earning over $500 M export dollars yearly. Although amajor portion of the catch is exported as 'whole-cooked' or 'tailed' products, anincreasing share of the catch is exported live. The majority of lobsters arrive at theprocessing sheds as live lobsters. However, a lack of basic physiologicalinformation has impeded advances in the design and management of transport andholding systems, often resulting in a deterioration of the physiological conditionof some lobsters. Such physiological deterioration may result in the final productchoice for the processors being limited, leading to a reduced value of the catch.The aim of this study was to develop an understanding of the physiology oflobsters, especially in relation to factors the lobsters may be subjected to duringpost-capture handling practices. This information could be used to redefine postcapturehandling practices and holding system design and management.Standard oxygen consumption of both species increased in response toincreases in temperature and body weight. Activity had the greatest effect onoxygen consumption rates, causing an approximate 3-fold increase above standardrates. The increase in oxygen consumption due to activity decreased attemperatures approaching the upper and lower extremes of each species. After aperiod of activity and emersion oxygen consumption remained elevated for up to 8hours. A marked diurnal rhythm was evident, with a 48% and 87% (J. edwardsiiand P. cygnus, respectively) increase in oxygen consumption at night. This waslargely related to increased activity at night. Feeding resulted in a substantial(greater than 2-fold in P. cygnus) and sustained (up to 48 hours) increase inoxygen consumption. Both species were essentially oxygen regulators, able tomaintain standard rates of oxygen consumption down to around 30% wateroxygen saturation. Below that oxygen level the lobsters became oxygenconformers. Activity resulted in an approximate doubling of the water oxygenlevel at which lobsters acted as oxygen conformers. The total ammonia nitrogen (TAN) excretion rates of both speciesincreased with increases in temperature and body weight. Activity had minor influence on the TAN excretion rate. A diurnal rhythm was evident in J. edwardsiibut not in P. cygnus. Feeding had a large affect on the TAN excretion rate, with anapproximate 6-fold increase occurring in each species. The excretion ratesremained high for over 24 hours post-prandial.The effect of the dissolved oxygen level on recovery of P. cygnus from aperiod of activity/emersion was investigated. Based on the rate of recovery ofvarious physiological parameters (oxygen consumption, haemolymph ammonia,lactate, glucose, and pH), the maintenance of water oxygen levels close to 100%saturation is recommended. Water oxygen levels less than 60% saturation slowedthe rate of recovery. All lobsters recovering in water with oxygen levels less than20% saturation died.Carrying P. cygnus out of water imposes physiological disturbances to thelobsters. The severity of the disturbances increased when the relative humiditywas lower and when wind was present. Spraying water over the lobsters preventssome of the physiological consequences of emersion, such as decreases in pH andhaemolymph ammonia buildup, however it does not prevent haemolymph lactateincreases. Therefore, lobsters still rely on anaerobic metabolism when emersed insprays. There was no evidence that failure of lobsters to recover from a period ofemersion was caused by gill damage.A half hour period of emersion/handling at 23°C caused largephysiological disturbances of P. cygnus. Halving the emersion/handling time didnot decrease the extent of the physiological disturbances. Slow-chilling thelobsters to 11°C prior to emersion/handling, was an effective means of decreasingthe physiological disturbances associated with emersion. This study has developed our understanding of the physiological responsesof the southern and western rock lobsters to factors affecting them during postcaptureprocesses, and will allow the design and management of rock lobsterholding facilities to be based on a sound scientific basis. It also represents a majorcontribution to knowledge on respiration and nitrogen metabolism of largedecapod crustaceans." @default.
• W58444988 created "2016-06-24" @default.
• W58444988 creator A5063659652 @default.
• W58444988 date "1998-01-01" @default.
• W58444988 modified "2023-09-22" @default.
• W58444988 title "A physiological investigation into methods of improving the post-capture survival of both the southern rock lobster, Jasus edwardsii, and the western rock lobster, Panulirus cygnus" @default.
• W58444988 hasPublicationYear "1998" @default.
• W58444988 type Work @default.
• W58444988 sameAs 58444988 @default.
• W58444988 citedByCount "3" @default.
• W58444988 crossrefType "dissertation" @default.
• W58444988 hasAuthorship W58444988A5063659652 @default.
• W58444988 hasConcept C144024400 @default.
• W58444988 hasConcept C2777118391 @default.
• W58444988 hasConcept C30772137 @default.
• W58444988 hasConcept C36289849 @default.
• W58444988 hasConcept C505870484 @default.
• W58444988 hasConcept C84766238 @default.
• W58444988 hasConcept C86803240 @default.
• W58444988 hasConceptScore W58444988C144024400 @default.
• W58444988 hasConceptScore W58444988C2777118391 @default.
• W58444988 hasConceptScore W58444988C30772137 @default.
• W58444988 hasConceptScore W58444988C36289849 @default.
• W58444988 hasConceptScore W58444988C505870484 @default.
• W58444988 hasConceptScore W58444988C84766238 @default.
• W58444988 hasConceptScore W58444988C86803240 @default.
• W58444988 hasLocation W584449881 @default.
• W58444988 hasOpenAccess W58444988 @default.
• W58444988 hasPrimaryLocation W584449881 @default.
• W58444988 hasRelatedWork W1565723035 @default.
• W58444988 hasRelatedWork W1801292210 @default.
• W58444988 hasRelatedWork W1988754028 @default.
• W58444988 hasRelatedWork W1998838277 @default.
• W58444988 hasRelatedWork W2015142699 @default.
• W58444988 hasRelatedWork W2015660454 @default.
• W58444988 hasRelatedWork W2020549809 @default.
• W58444988 hasRelatedWork W2031142532 @default.
• W58444988 hasRelatedWork W2065965298 @default.
• W58444988 hasRelatedWork W2074735290 @default.
• W58444988 hasRelatedWork W2100996479 @default.
• W58444988 hasRelatedWork W2103871637 @default.
• W58444988 hasRelatedWork W2146808212 @default.
• W58444988 hasRelatedWork W2279560296 @default.
• W58444988 hasRelatedWork W2474438426 @default.
• W58444988 hasRelatedWork W2804628508 @default.
• W58444988 hasRelatedWork W2897355305 @default.
• W58444988 hasRelatedWork W2945705620 @default.
• W58444988 hasRelatedWork W651864657 @default.
• W58444988 hasRelatedWork W764128784 @default.
• W58444988 isParatext "false" @default.
• W58444988 isRetracted "false" @default.
• W58444988 magId "58444988" @default.
• W58444988 workType "dissertation" @default.