Natali Janet DelormeCawthron Institute | CI · Aquaculture
Natali Janet Delorme
PhD
About
30
Publications
3,937
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363
Citations
Citations since 2017
Introduction
My research interests are about stress and health of shellfish and the mechanisms by which animals can withstand adverse conditions.
Additional affiliations
March 2018 - May 2020
August 2012 - January 2017
Education
November 2010 - February 2012
March 2002 - January 2008
Publications
Publications (30)
The marine environment is ever-changing, with daily and seasonal variations in factors such as food availability and seawater temperature. This study assessed the effects of food limitation (i.e. fasting) on heat-stress responses in juveniles (~1.3 mm in shell length) of the green-lipped mussel, Perna canaliculus. Fasting for up to 24 h did not hav...
The eggs of echinoderms with lecithotrophic development provide structural and nutritional materials (lipids, proteins) to complete development without any external sources of nutrition. Previous studies have suggested that a relatively large proportion of the maternal lipid reserves remain after settlement to provision the early post-metamorphic j...
In the family Asterinidae, development through a planktonic lecithotrophic brachiolaria larva is common and has evolved independently several times. Here, we describe the lecithotrophic development of the asterinid Stegnaster inflatus, a species endemic to New Zealand. Early development through the blastula and gastrula stages is short, with hatchi...
A globally unique aspect of the substantial mussel aquaculture industry in New Zealand is its major reliance on wild juvenile mussel seed that is harvested from beachcast material sporadically arriving at a single beach in the north of the country. Hundreds of tonnes of the seed material are harvested from Ninety Mile Beach each year and transporte...
![Total lipid peroxidation (MDA concentration [nmol mL⁻¹]) in Greenshell™...](profile/Natali-Delorme/publication/368685713/figure/fig3/AS:11431281121549991@1677034981706/Total-lipid-peroxidation-MDA-concentration-nmol-mL-in-Greenshell-mussels-P_Q320.jpg)
The Greenshell™ mussel, Perna canaliculus, is the most lucrative aquaculture species in New Zealand; however, losses of commercial juvenile mussels (spat) are common and can drastically reduce the yield of adults. Modification of seeding density is a potential method to manage loss of spat (~ 1–20-mm shell length), by reducing biofouling and intras...
Marine heatwaves and elevated sea surface temperatures are expected to increase in frequency and intensity, with catastrophic effects on New Zealand aquaculture species, such as the green-lipped mussel (Perna canaliculus). Thermal stress affects mussel health, metabolic regulation and physiological functions, illustrating the kind of adaptive capac...
Farming of green-lipped mussels (Perna canaliculus) can be seen as the cornerstone of the New Zealand aquaculture industry. Yet, warming sea surface temperatures are threatening aquaculture species due to disease outbreaks and associated mortalities. Large research efforts are being invested to better understand how climate change stressors, such a...
Cultured Greenshell™ mussels (Perna canaliculus) are exposed to biotic and abiotic stresses, all of which can negatively impact growth, fecundity, and survival. These impacts are especially pronounced in sensitive larval and spat stages and may result in substantial losses when spat are transferred from hatchery to grow-out farms. Immersion in solu...
Stress and survival of the juvenile New Zealand green-lipped mussel, Perna canaliculus, is a poorly understood bottleneck in the ecological and economic performance of a significant aquaculture crop. This species was therefore selected as a model organism for the development of a new method to quantify oxidative stress in whole individuals. An in v...
The New Zealand geoduck clam is a unique seafood delicacy, with animals selling for up to $US 220–330/kg. Stress accumulated during transport of juveniles to grow-out sites represent a bottleneck in the aquaculture process. In this study, the physiological responses of juvenile geoducks following emersion (3- and 8-h), and recovery (1- and 5-days)...
New Zealand aquaculture has grown into a significant primary industry, with the Greenshell mussel (Perna canaliculus) sector being the largest in terms of value and production quantity. Extreme events such as heat waves have increased in frequency over the last decades and are responsible for mass mortalities in mussels, threatening economic and ec...
The early stages of intertidal mussels, including the green-lipped mussel, Perna canaliculus, face both direct and indirect environmental threats. Stressors may influence physiological status and, ultimately, survival. An understanding of the nature of stress experienced is critical to inform conservation and aquaculture efforts. Here, we investiga...
Ocean warming and extreme sea surface temperature anomalies are threatening wild and domesticated fish stocks in various regions. Understanding mechanisms for thermotolerance and processes associated with divergent growth performance is key to the future success of aquaculture and fisheries management. Herein, we exposed Chinook salmon (Oncorhynchu...
The substantial loss of seed mussels during the early stages of longline aquaculture—often exceeding 95%—is a major issue that erodes the security and profitability of production while limiting the sustainable expansion of this industry in many parts of the world. There are many biological, environmental and procedural factors that potentially caus...
Marine organisms are constantly exposed to stress, such as changes in seawater temperature, which may elicit biochemical, molecular, and physiological changes. In the present study, an integrative approach to evaluate stress in the green-lipped mussel Perna canaliculus exposed to control, moderate, and severe heat stress was used. Flow cytometry (F...
Seawater temperature is projected to increase globally due to climate change, affecting physiological responses, fitness and survival of marine organisms. Thermal tolerance studies are critical to determine the ability of animals to adapt to future environmental conditions. In this study, we aimed to determine if the thermal limits of the New Zeala...
The successful resettlement of marine mussels is an essential but overlooked process in their early life. A major challenge facing the mussel aquaculture industry is the extreme inefficiency of the seeding process, with most mussels being lost soon after seeding due to mortality or secondary settlement behaviour. Extended periods of nursery culture...
Call for abstracts now open!
The increase in seawater temperature due to anthropogenic climate change is likely to affect population persistence and changes in distributional ranges of marine species. Adaptation to warmer environmental conditions will be determined by the presence of tolerant genotypes within a population. The present study determined the genotype-by-environme...
Temperature and salinity are important environmental factors affecting the normal functioning of marine animals, particularly animals such as sea urchins living in shallow waters and tide pools. Here, we evaluated the effect of different combinations of temperature and salinity on early embryos of the endemic New Zealand sea urchin Evechinus chloro...
Understanding the impact of noise on marine fauna at the population level requires knowledge about the vulnerability of different life-stages. Here we provide the first evidence that noise exposure during larval development produces body malformations in marine invertebrates. Scallop larvae exposed to playbacks of seismic pulses showed significant...
This study determines the existence of temporal patterns in parasite communities of resident (Scartichthys viridis and Helcogrammoides chilensis) and temporal fishes (Girella laevifrons and Sicyases sanguineus) from the rocky intertidal of central Chile. Fish were seasonally collected, from winter 2006 to winter 2009. In resident fishes, the mean i...
This study determines the existence of temporal patterns in parasite communities of resident (Scartichthys viridis and Helcogrammoides chilensis) and temporal fishes (Girella laevifrons and Sicyases sanguineus) from the rocky intertidal of central Chile. Fish were seasonally collected, from winter 2006 to winter 2009. In resident fishes, the mean i...
Questions
Question (1)
Physiomar is a triennial international forum for discussion of recent advances in all aspects of the physiology of aquatic invertebrates. The conference has no parallel sessions and is usually attended by participants from over 25 countries. It is an opportunity to maximise exchange of knowledge and expertise, and encourage collaboration in all areas including functional biology, growth, nutrition, reproduction, and adaptation to an ever-changing environment.
Registrations are now open and abstract submission deadline is until April 4th, so get in quick!
Projects
Projects (4)
Grow and secure shellfish aquaculture industry in New Zealand
Support hatchery spat production by enabling selective breeding, optimizing hatchery technologies and microalgal production.
Diversify emerging shellfish species portfolio
Physiomar is a triennial international forum for discussion of recent advances in all aspects of the physiology of aquatic invertebrates. The conference has no parallel sessions and is usually attended by participants from over 25 countries. It is an opportunity to maximise exchange of knowledge and expertise, and encourage collaboration in all areas including functional biology, growth, nutrition, reproduction, and adaptation to an ever-changing environment.
The Australia New Zealand Marine Biotechnology Society (ANZMBS) aims to advance marine biotechnology in Australia and New Zealand through the exchange of ideas and collaborations between researchers, biotechnologists, industry and government colleagues and other interested parties. This will be the 4th ANZMBS Conference.
Most seed mussels are lost in the first few months of aquaculture representing an inefficient use of a poorly understood natural resource (wild seed) or expensive hatchery raised seed. Losses can dictate overall mussel production and constrain industry growth. We aim to understand the causes of seed losses through research into the behaviour, physiology and condition of seed mussels and how they relate to environmental variations and procedural aspects of the mussel aquaculture industry, such as the transfer of seed among regions. Using this knowledge, we aim to design and implement measures to increase the retention of spat in aquaculture.
