Behavioural and Physiological Responses of Juvenile Geoduck (Panopea zelandica) Following Acute Thermal Stress

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aut.relation.articlenumber110892
aut.relation.journalComparative Biochemistry and Physiology B: Biochemistry and Molecular Biology
aut.relation.startpage110892
aut.relation.volume269
dc.contributor.authorSharma, Shaneel S
dc.contributor.authorVenter, Leonie
dc.contributor.authorFrost, Emily J
dc.contributor.authorAlfaro, Andrea C
dc.contributor.authorRagg, Norman LC
dc.contributor.authorZamora, Leonardo N
dc.date.accessioned2023-11-15T21:53:24Z
dc.date.available2023-11-15T21:53:24Z
dc.date.issued2023-08-11
dc.description.abstractClimate extremes, such as heatwaves, are expected to become more intense and of longer duration in the near future. These climatic conditions may have a significant impact on the prospects of establishing a new aquaculture industry for the endemic New Zealand geoduck, Panopea zelandica. This study focused on characterising animal behaviour, haemocyte characteristics, and heat shock protein (HSP70 & HSP90) mRNA expression following exposure to elevated temperatures, such as those encountered during marine heatwaves around 20 °C and an extreme scenario of 25 °C, contrasted to an ambient temperature of 17 °C. After 24 h of heat challenge, P. zelandica were found to be significantly influenced by the thermal changes, as there were differences recorded in all the responses examined. With increasing temperatures, juvenile geoducks were observed to fully emerge from the sediment a behaviour that has not previously been quantified nor associated with stress in this species. The ability of P. zelandica juveniles to re-bury still warrants further investigation, as adults are unable to do so. Haemocyte analyses revealed an increase in the abundance of granulocytes, cellular aggregations, and size of these aggregations at the highest temperature exposure. Increased expression of the hsp70 gene in the haemolymph after exposure at 25 °C for 24 h was detected and attributed to attempts to mitigate protein denaturation caused by thermal stress. The inter-individual variability in the response of heat shock proteins recorded could aid in future selective breeding programs if it is reflected in net thermotolerance. P. zelandica shows great potential for growing in subtidal habitats around New Zealand, and this study highlights the importance of temperature considerations when selecting potential farm and reseeding locations.
dc.identifier.citationComparative Biochemistry and Physiology B: Biochemistry and Molecular Biology, ISSN: 1096-4959 (Print); 1096-4959 (Online), Elsevier, 269, 110892-. doi: 10.1016/j.cbpb.2023.110892
dc.identifier.doi10.1016/j.cbpb.2023.110892
dc.identifier.issn1096-4959
dc.identifier.issn1096-4959
dc.identifier.urihttp://hdl.handle.net/10292/16938
dc.languageeng
dc.publisherElsevier
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S1096495923000672
dc.rights.accessrightsOpenAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBurrowing behaviour
dc.subjectGeoduck
dc.subjectHaemocytes
dc.subjectMarine heatwave
dc.subjectThermal stress
dc.subjectBurrowing behaviour
dc.subjectGeoduck
dc.subjectHaemocytes
dc.subjectMarine heatwave
dc.subjectThermal stress
dc.subject30 Agricultural, Veterinary and Food Sciences
dc.subject3101 Biochemistry and Cell Biology
dc.subject31 Biological Sciences
dc.subject3109 Zoology
dc.subject3005 Fisheries Sciences
dc.subject0601 Biochemistry and Cell Biology
dc.subject0606 Physiology
dc.subjectBiochemistry & Molecular Biology
dc.subject3005 Fisheries sciences
dc.subject3101 Biochemistry and cell biology
dc.subject3109 Zoology
dc.titleBehavioural and Physiological Responses of Juvenile Geoduck (Panopea zelandica) Following Acute Thermal Stress
dc.typeJournal Article
pubs.elements-id521279
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