ORCID Profile
0000-0002-8504-1949
Current Organisation
The University of Auckland
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Fisheries Sciences | Fish Physiology and Genetics | Aquaculture | Marine and Estuarine Ecology (incl. Marine Ichthyology) | Manufacturing Processes and Technologies (excl. Textiles) | Oceanography | Fisheries Management | Agricultural Marine Biotechnology | Physical Oceanography |
ANZSRC Socio-Economic Objective (SEO)
Aquaculture Rock Lobster | Climate Variability (excl. Social Impacts) | Environmentally Sustainable Animal Production not elsewhere classified | Marine Oceanic Processes (excl. climate related) | Ecosystem Assessment and Management of Marine Environments
Related Links
Publications
The effect of dietary carbohydrates on the growth response, digestive gland glycogen and digestive enzyme activities of early spiny lobster juveniles, Jasus edwardsii
Publisher: Hindawi Limited
Date: 17-05-2011
Population subdivision in the tropical spiny lobster Panulirus ornatus throughout its Indo-West Pacific distribution
Publisher: Oxford University Press (OUP)
Date: 28-10-2016
Abstract: Many marine species with Indo-West Pacific distributions have been found to have a considerable level of genetic population structuring across this broad region. We investigated mitochondrial DNA ersity throughout the extensive range of the commercially valuable ornate spiny lobster, Panulirus ornatus, which has an unusually lengthy larval period that can last up to six months. In this study, 298 specimens were s led from 17 locations covering the West Indian Ocean, Western Australia, Southeast Asia, and the Northwest and Southwest Pacific. Based on sequencing of a 461 bp fragment of mitochondrial control region, we found high levels of haplotype ersity (H = 0.99) and overall significant population differentiation (Φst = 0.113, P & 0.001). The West Indian Ocean and Western Australia populations were the most genetically ergent, with little differentiation among the remaining Southeast Asian and West Pacific populations. The Western Australia population showed evidence of being a peripherally isolated population, with significantly lowered effective population size, likely due to the prevailing ocean currents. The present results indicate that genetically distinct stocks of P. ornatus are present in the wild and that historical and present day biogeographic phenomena have likely influenced this population structure. The presence of these ergent stocks has major implications for both management of fisheries and aquaculture breeding programs for this valuable species.
Behavioral plasticity in larval reef fish: Orientation is influenced by recent acoustic experiences
Publisher: Oxford University Press (OUP)
Date: 2010
Restoring shellfish reefs: Global guidelines for practitioners and scientists
Publisher: Wiley
Date: 23-03-2020
DOI: 10.1111/CSP2.198
Feeding and gut evacuation of cultured juvenile spiny lobsters, Jasus edwardsii
Publisher: Elsevier BV
Date: 08-2008
Fussy Feeders: Phyllosoma Larvae of the Western Rocklobster (Panulirus cygnus) Demonstrate Prey Preference
Publisher: Public Library of Science (PLoS)
Date: 07-05-2012
Mechanisms of peripheral phylogeographic divergence in the indo-Pacific: lessons from the spiny lobster Panulirus homarus
Publisher: Springer Science and Business Media LLC
Date: 18-08-2017
Settlement-stage coral reef fish prefer the higher-frequency invertebrate-generated audible component of reef noise
Publisher: Elsevier BV
Date: 06-2008
Cardiac mitochondrial energetics of the Australasian red spiny lobster, Jasus edwardsii, when exposed to isoeugenol within the commercial anaesthetic AQUI-S.
Publisher: The Company of Biologists
Date: 14-06-2022
DOI: 10.1242/JEB.242771
Abstract: The anaesthetic isoeugenol has been used as metabolic suppressant for commercial transport of live lobsters in order to decrease energy expenditure and improve survival. Given the central role of mitochondria in metabolism and structural similarities of isoeugenol to the mitochondrial electron carrier coenzyme Q, we explored the influence on mitochondrial function of isoeugenol. Mitochondrial function was measured using high-resolution respirometry and saponin-permeabilised heart fibres from the Australasian red spiny lobster, Jasus edwardsii. Relative to vehicle (polysorbate), isoeugenol inhibited respiration supported by complex I (CI) and cytochrome c oxidase (CCO). While complex II (CII), which also reduces coenzyme Q, was largely unaffected by isoeugenol, respiration supported by CII when uncoupled was depressed. Titration of isoeugenol indicates that respiration through CI has a half-maximal inhibitory concentration (IC50) of 2.4±0.1 µmol l-1, and a full-maximal inhibitory concentration (IC100-) of approximately 6.3 µmol l-1. These concentrations are consistent with those used for transport and euthanasia of J. edwardsii and indicate that CI is a possible target of isoeugenol, like many other anaesthetics with quinone-like structures.
Evidence of vertical transmission and tissue tropism of Streptococcosis from naturally infected red tilapia (Oreochromis spp.)
Publisher: Elsevier BV
Date: 05-2016
Method for Determining Apparent Digestibility of Carbohydrate and Protein Sources for Artificial Diets for Juvenile Sea Cucumber, Australostichopus mollis
Publisher: Wiley
Date: 10-2011
Differing environmental drivers of settlement across the range of southern rock lobster (Jasus edwardsii) suggest resilience of the fishery to climate change
Publisher: Wiley
Date: 14-10-2016
DOI: 10.1111/FOG.12185
Sound as an Orientation Cue for the Pelagic Larvae of Reef Fishes and Decapod Crustaceans
Publisher: Elsevier
Date: 2006
Fatty acid profiles of phyllosoma larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia
Publisher: Elsevier BV
Date: 03-2014
Phyllosomata associated with large gelatinous zooplankton: hitching rides and stealing bites
Publisher: Oxford University Press (OUP)
Date: 03-10-2014
Abstract: During a zooplankton survey 350 km off the coast of Western Australia, we captured a large and robust zooid of a salp (Thetys vagina), to which six late stage larvae (phyllosomata) of the western rock lobster (Panulirus cygnus) were attached. High-throughput sequencing analyses of DNA extracts from midgut glands of the larvae confirmed that each phyllosoma had consumed mainly salp tissue (x¯ = 64.5% ± 15.9 of DNA reads). These results resolve long-standing conjecture whether spiny lobster phyllosomata attach to large gelatinous hosts to feed on them.
The effect of dietary carbohydrate on the appetite revival and glucose metabolism of juveniles of the spiny lobster, Jasus edwardsii
Publisher: Elsevier BV
Date: 03-2013
Lipids and nutrition of the southern rock lobster, Jasus edwardsii, from hatch to puerulus
Publisher: CSIRO Publishing
Date: 2001
DOI: 10.1071/MF01071
Abstract: We examined the lipid class and fatty-acid composition of the southern rock lobster, Jasus edwardsii, phyllosoma larvae and puerulus stage to improve understanding of their nutrition in relation to aquaculture. Lipid is critical in the nutrition of larval crustaceans, including lobsters. Specimens were from Tasmanian waters, Australia, and North Island, New Zealand, waters. Analyses were by TLC-FID and capillary GC and GC-MS. Phyllosoma larvae and nektonic pueruli were low in storage lipid (triacylglycerol), and phospholipid was the major lipid class. Sterol, mainly cholesterol, was the next most abundant class. The ratio of the essential omega-3 fatty acid eicosapentaenoic acid (EPA) to the omega-6 fatty acid arachidonic acid (AA) was lower in newly hatched phyllosomas (1.2–1.3) than in other phyllosomas (stages III–XI 2.8–6.7) and pueruli (3.8). Ratios of the omega-3 fatty acid DHA (docosahexaenoic acid) to EPA were also lower in newly hatched phyllosomas (0.5) than in laterstage phyllosomas (1.5–2.1) and pueruli (1.2). We have followed up these compositional data by successfully enriching the live diet (Artemia) of early phyllosomas with AA, EPA and DHA. This dietary manipulation has achieved ratios of these key polyunsaturated fatty acids similar to those of wild phyllosomas. These findings will be of significance to the future of rock-lobster aquaculture.
Potential for Concentrated Microalgae as Replacement Diets for Juvenile Green-Lipped Mussels, Perna canaliculus
Publisher: Hindawi Limited
Date: 21-02-2023
DOI: 10.1155/2023/9841172
Abstract: The nursery culture of bivalves typically relies on the feeding of costly live microalgae, while the use of natural sources of phytoplankton for feed is uncertain due to their variable quality and abundance. Replacement diets have been applied in bivalve nursery culture to replace live microalgae with varying success. This study investigated the potential use of two concentrated microalgal diets at a range of levels of substitution with live microalgae. Shellfish Diet 1800® (called SD) and LPB™ Frozen Shellfish Diet® (called LPB) were fed to juvenile green-lipped mussels (Perna canaliculus) at five levels of substitution for live microalgae (i.e., 0, 25, 50, 75, and 100%) for 27 days. The mortality of mussels fed with 100% LPB replacement was significantly higher than the mortality of mussels fed at the lower levels of replacement, i.e., 0 and 25%. The overall final size of spat tended to decrease with the increasing level replacement of live microalgae. Proximate analysis (i.e., crude ash-free dry weight, crude protein, crude lipid, and carbohydrate) showed that only the proportion of carbohydrate content of spat was influenced by feeding treatments, with the mean total carbohydrate content of mussels tending to decrease with increasing levels of replacement of live microalgae. The results indicate that both concentrated microalgal feeds (SD and LPB) are effective at replacing live microalgae by up to 50% without compromising the survival and nutritional profile (AFDW, protein, lipid, and carbohydrate content) of juvenile green-lipped mussels and are therefore a useful resource for improving the efficiency of production.
Homeward sound
Publisher: American Association for the Advancement of Science (AAAS)
Date: 08-04-2005
Abstract: Despite spending weeks at sea as larvae, potentially scattered over many kilometers, young coral reef fish find suitable settlement habitat and in some cases return to their natal reefs. We report that some dominant families of larval reef fish use the sounds made by fish and shrimp resident on reefs to help them locate and settle on reefs and that some fish groups use specific components of the reef sound to guide their behavior. These findings could offer potential for active management of reef fisheries.
Relative importance of natural cues and substrate morphology for settlement of the New Zealand Greenshell™ mussel, Perna canaliculus
Publisher: Elsevier BV
Date: 09-2011
Growth and demography of paua Haliotis iris (Mollusca: Gastropoda) in northeastern New Zealand
Publisher: Informa UK Limited
Date: 1997
Conserving shellfish reefs—a systematic review reveals the need to broaden research efforts
Publisher: Wiley
Date: 05-2021
DOI: 10.1111/REC.13375
Abstract: Globally, shellfish reefs have experienced unprecedented declines from historical levels, imperiling the surrounding ecosystems and the services they provide. Shellfish conservation and restoration projects have emerged to combat and reverse this decline but are hindered by a scattered knowledge base and a lack of evidence‐based best practice. To address this concern, we conducted a systematic review of English‐language peer‐reviewed articles studying the impacts of conservation‐based actions on reef‐building bivalves. A comprehensive search identified 281 relevant articles for the review. Articles were then categorized to establish the temporal and geographic extent of shellfish reef conservation research, quantify collaboration within the field, and develop a systematic map of the distribution of evidence across intervention and outcome categories. The results confirm a substantial increase in shellfish reef research with 72% of articles published since 2010. However, this evidence base is uneven, with 80% of research occurring in the United States and Northern Europe, 71% on only oysters, and 58% by only academia‐affiliated authors. The systematic map of linkages and gaps also reveals disparities in the evidence base, as ecological interventions and outcomes are undertaken and measured at a far greater rate than social interventions and outcomes, despite evidence that social aspects are critical components of conservation work. To ensure future conservation practitioners have evidence that is relevant to the circumstances of their projects, this evidence base needs to be ersified and we offer recommendations on reprioritizations for future research as well as a comprehensive database of existing shellfish conservation papers.
Spinning in different directions: western rock lobster larval condition varies with eddy polarity, but does their diet?
Publisher: Oxford University Press (OUP)
Date: 22-04-2015
The Effect of Sound Frequency and Intensity on Yeast Growth, Fermentation Performance and Volatile Composition of Beer
Publisher: MDPI AG
Date: 29-11-2021
DOI: 10.3390/MOLECULES26237239
Abstract: This study investigated the impact of varying sound conditions (frequency and intensity) on yeast growth, fermentation performance and production of volatile organic compounds (VOCs) in beer. Fermentations were carried out in plastic bags suspended in large water-filled containers fitted with underwater speakers. Ferments were subjected to either 200–800 or 800–2000 Hz at 124 and 140 dB @ 20 µPa. Headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS) was used to identify and measure the relative abundance of the VOCs produced. Sound treatment had significant effects on the number of viable yeast cells in suspension at 10 and 24 h (p 0.05), with control (silence) s les having the highest cell numbers. For wort gravity, there were significant differences between treatments at 24 and 48 h, with the silence control showing the lowest density before all ferments converged to the same final gravity at 140 h. A total of 33 VOCs were identified in the beer s les, including twelve esters, nine alcohols, three acids, three aldehydes, and six hop-derived compounds. Only the abundance of some alcohols showed any consistent response to the sound treatments. These results show that the application of audible sound via underwater transmission to a beer fermentation elicited limited changes to wort gravity and VOCs during fermentation.
Children's physical activity and screen time: Qualitative comparison of views of parents of infants and preschool children
Publisher: Springer Science and Business Media LLC
Date: 2012
Adaptive Avoidance of Reef Noise
Publisher: Public Library of Science (PLoS)
Date: 04-02-2011
Determining the Diet of Larvae of Western Rock Lobster (Panulirus cygnus) Using High-Throughput DNA Sequencing Techniques
Publisher: Public Library of Science (PLoS)
Date: 21-08-2012
Multidisciplinary baselines quantify a drastic decline of mussel reefs and reveal an absence of natural recovery
Publisher: Wiley
Date: 03-2023
DOI: 10.1002/ECS2.4390
Abstract: The onset of the Anthropocene has coincided with enormous global declines in natural ecosystems, leading to losses in the valuable goods and ecosystem services they provide. This global decline, in conjunction with growing recognition of the ecological importance of natural ecosystems, has generated a pressing need for restoration. Effective ecosystem restoration relies on accurate identification of the cause of decline and clear metrics of success, which are only possible with baseline data of both the pre‐degradation and pre‐restoration ecosystems. However, the establishment of these baselines can be difficult as different potential information sources each have benefits and drawbacks. Determining an efficient method to balance these erse information sources and generate robust baselines is vital to achieving the United Nations' goal of massively scaled‐up ecosystem restoration. Here we expand on the concept of multidisciplinary baselines, or the combined use of sources and methods across a wide disciplinary spectrum to establish comprehensive and reliable ecosystem baselines, and use mussel reefs in the South Island of New Zealand as a test case. Using a combination of comprehensive historical review, extensive shoreline surveys, and local ecological knowledge, we demonstrate that local mussel abundances decreased by 97% since the mid‐1960s as a result of overharvesting, leaving the extant populations scattered, small, and without recovery. This study demonstrates that harnessing multidisciplinary baselines allows for the consolidation of qualitative and quantitative estimates of ecosystem change over hundreds of years, as well as confirmation of causes of ecosystem degradation, and clear documentation of current ecosystem state beyond what is possible from any in idual source. This approach to establishing ecosystem baselines also provides valuable avenues for the advancement of restoration by quantifying the temporal and geographic scales of ecosystem decline, identifying areas for intervention, and establishing clear metrics of success.
Bottom-drifting algal/mussel spat associations along a sandy coastal region in northern New Zealand
Publisher: Elsevier BV
Date: 11-2004
Condition of larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia
Publisher: CSIRO Publishing
Date: 2015
DOI: 10.1071/MF14121
Abstract: Changes in the offshore oceanographic processes are suspected to be the cause of a recent dramatic decline in the settlement of post-larvae of the Western Australian spiny lobster (Panulirus cygnus), which has greatly reduced the productivity from the world’s second-largest spiny lobster fishery. The present study assessed whether there are differences in the nutritional condition of the larvae of P. cygnus s led from two pairs of cyclonic eddies (CEs) and anticyclonic eddies (AEs). Morphometric and biochemical analyses were undertaken on the mid–late-stage larvae (VI, VII, VIII) s led offshore from two pairs of adjacent counter-rotating mesoscale eddies in the Leeuwin Current off Western Australia. The results showed that larvae captured from CEs had greater average total dry mass (P .001) than those from AEs. Stage VIII larvae from CEs contained more protein (P .008) (38.5% ±5.4s.e.) and lipid (P .005) (67.2% ±12.1) than did those from AEs. The possible causes for these differences are uncertain but may be related to differences in water temperatures in CEs v. AEs influencing the ability of phyllosomas to accumulate nutritional reserves.
Partial 18S rRNA sequences of apicomplexan parasite ‘X’ (APX), associated with flat oysters Ostrea chilensis in New Zealand
Publisher: Inter-Research Science Center
Date: 19-12-2017
DOI: 10.3354/DAO03175
Abstract: Apicomplexa is a large phylum of parasitic protists renowned for significant negative health impacts on humans and livestock worldwide. Despite the prevalence and negative impacts of apicomplexans across many animal groups, relatively little attention has been given to apicomplexan parasites of invertebrates, especially marine invertebrates. Previous work has reported an apicomplexan parasite 'X' (APX), a parasite that has been histologically and ultrastructurally identified from the commercially important flat oyster Ostrea chilensis in New Zealand. This apicomplexan may exacerbate host vulnerability to the infectious disease bonamiosis. In this study, we report 18S rRNA sequences lified from APX-infected O. chilensis tissues. Phylogenetic analyses clearly established that the 18S sequences were of apicomplexan origin however, their detailed relationship to known apicomplexan groups is less resolved. Two specific probes, designed from the putative APX 18S rRNA sequence, co-localised with APX cells in in situ hybridisations, further supporting our hypothesis that the 18S sequences were from APX. These sequences will facilitate the future development of inexpensive and sensitive molecular diagnostic tests for APX, thereby assisting research focussed on the biology and ecology of this organism and its role in morbidity and mortality of O. chilensis.
Nocturnal relocation of adult and juvenile coral reef fishes in response to reef noise
Publisher: Springer Science and Business Media LLC
Date: 09-2008
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Related Funding Activities
Industrial Transformation Research Hubs - Grant ID: IH120100032
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End Date: 12-2019
Amount: $5,000,000.00
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View Funded ActivityLinkage Projects - Grant ID: LP150100064
Start Date: 03-2016
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View Funded ActivityIndustrial Transformation Research Hubs - Grant ID: IH190100014
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End Date: 12-2024
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