Papers by Natalie Moltschaniwskyj
Reviews in Fish Biology and Fisheries
Australia’s fisheries have experience in responding individually to specific shocks to stock leve... more Australia’s fisheries have experience in responding individually to specific shocks to stock levels (for example, marine heatwaves, floods) and markets (for example, global financial crisis, food safety access barriers). The COVID-19 pandemic was, however, novel in triggering a series of systemic shocks and disruptions to the activities and operating conditions for all Australia’s commercial fisheries sectors including those of the research agencies that provide the information needed for their sustainable management. While these disruptions have a single root cause—the public health impacts and containment responses to the COVID-19 pandemic—their transmission and effects have been varied. We examine both the impacts on Australian fisheries triggered by measures introduced by governments both internationally and domestically in response to the COVID-19 pandemic outbreak, and the countermeasures introduced to support continuity in fisheries and aquaculture production and supply chain...
Table of Contents Table of Contents 2 List of Figures 4 List of Tables 9 Non-Technical Summary 12... more Table of Contents Table of Contents 2 List of Figures 4 List of Tables 9 Non-Technical Summary 12 Acknowledgements 16 Background 17 Need 18 Objectives 19 General Introduction 20 Chapter 1: Small-scale spatial and temporal patterns of egg production by the temperate loliginid squid Sepioteuthis australis
Environmental Pollution, 2021
Татьяна Фролова @ Фролова Татьяна Ивановна доктор филологических наук, профессор кафедры периодич... more Татьяна Фролова @ Фролова Татьяна Ивановна доктор филологических наук, профессор кафедры периодической печати факультета журналистики МГУ имени М.В. Ломоносова
Physiological and Biochemical Zoology, 2013
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, a... more JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
Science of The Total Environment
Ocean & Coastal Management
Full text is available via this link for 50 days https://authors.elsevier.com/c/1ahFR3RKK-njwV AB... more Full text is available via this link for 50 days https://authors.elsevier.com/c/1ahFR3RKK-njwV ABSTRCT Cultural ecosystem services (CES) are the non-material benefits obtained from natural ecosystems that contribute to human wellbeing through aesthetic and recreational experiences, and spiritual enrichment. While research on CES is rapidly increasing in line with growing recognition of important contributions to wellbeing, little is known about CES derived from estuaries: some of the most densely populated and highly impacted ecosystems worldwide. A broad-scale assessment of CES derived from estuaries in New South Wales (NSW) was conducted using a questionnaire survey that targeted people residing near estuaries. The study aimed to determine: (i) CES important to respondents; (ii) perceptions of threats to the provision of CES; and (iii) attributes considered important by local people for their continued enjoyment and recreational use of estuaries in NSW. A total of 463 people completed the questionnaire and results revealed estuaries were highly valued by all respondents for supplying a range of CES; with aesthetics, intrinsic/existence/future, and nature/biodiversity being the most highly valued CES. The top three perceived threats with the potential to negatively affect supply of CES were: development, pollution, and poor water quality. Good water quality, maintenance of biodiversity, and litter prevention were the three most important attributes considered crucial by respondents for the provision of CES. Further, natural attributes were positively associated with CES. Overall, almost all respondents believed their estuary was very important in contributing to their wellbeing. These findings have important implications for spatial planning and the management of estuarine areas to ensure a continued provision of CES. Full text is available via the following link for 50 days. https://authors.elsevier.com/c/1ahFR3RKK-njwV
Papers and Proceedings of the Royal Society of Tasmania
Dense aggregations of moon jellyfish, Aurelia sp., occurred in four of eight summers from 1978/79... more Dense aggregations of moon jellyfish, Aurelia sp., occurred in four of eight summers from 1978/79 to 2004/05 in the Huon Estuary, southern Tasmania, causing signifi cant mortality of farmed Atlantic Salmon. 1bis study investigated the biological characteristics of this jellyfish as part of a larger study examining factors influencing these aggregation events. Aggregations of medusae in the Huon Estuary were intensively sampled over 50 days in 2004/05. They typically had a strongly delineated structure throughout the water column, with a relatively high density of medusae at maturity, then the aggregations rapidly disappeared (size at maturity for 50% of the population was 101 mm bell diameter for females, 90 mm bell diameter for males). The discrete structure of the aggregations enabled relatively accurate estimates of the biomass of the Aurelia sp. population when growth rate was at its maximum. The number of aggregations in the estuary, their sizes and density of medusae were estimated from aerial photographs, by divers, and underwater video records. Mean density in the aggregations was 71 medusae m-3. They contained approximate totals of 17 4 million Aurelia sp. medusae, wet weight of 28 ,600 t, and 39 .2 t of carbon. Our observations suggest that the main advantage of forming these complex aggregations is to enhance fertilisation success.
Hydrobiologia
Nine papers comprising this special section of Hydrobiologia on cephalopod molluscs are introduce... more Nine papers comprising this special section of Hydrobiologia on cephalopod molluscs are introduced. These papers are a selection of those submitted following the CIAC 2015 conference held in Hakodate, Hokkaido, Japan, during 6-14 November, 2015. Keywords Cephalopoda Á Spermatangia ejaculate and male strategies for squid mating Á Female octopus starvation and health during brooding Á Sepia officinalis Hoyle's organ autophagy Á Sepiolid paralarva morphology COI and identification Á Body fluid osmolality osmoconforming Á Effects of ocean acidification on paralarval swimming behaviour Á Species composition among coastal loliginid and oceanic onychoteuthid squid Á Octopus mimus population In recent years, the cephalopod molluscs have become much more widely known to the public at large, particularly since the 2010 FIFA World Cup football competition (when an octopus in a German aquarium successfully predicted the match winners; Dowling, 2010); and the Internet is now rife with interesting images and video clips of this intelligent and photogenic group of animals. There were an unusually large number of sightings of octopuses out of water in the UK in 2017 and it was a bumper year for octopus fishing in some parts of Japan. Both these phenomena may be related to global changes that seem to be involved in a steady rise in cephalopod abundance worldwide (Doubleday et al., 2016). In view of the more prominent profile of cephalopods, and also their increasing importance in fisheries and aquaculture, there is a clear demand to learn more about their life. The CIAC 2015 conference, organized under the auspices of the Cephalopod International Advisory Council (CIAC), was held over 9 days in November of 2015 in Hakodate, a city in northern Japan famous for its annual landings of the Japanese flying squid, Todarodes pacificus (Steenstrup, 1880). The theme of the conference was Recent Advances in
Marine and Freshwater Research
A post-cleavage embryological scheme was established for southern calamary Sepioteuthis australis... more A post-cleavage embryological scheme was established for southern calamary Sepioteuthis australis. Using this developmental scheme, intra- and interspecific comparisons were made. Sepioteuthis australis development most closely resembled that of its tropical congeneric species, S. lessoniana, with only a few subtle heterochronies. The greatest developmental difference was observed when comparisons were made with Loligo pealei. These differences were attributed to developmental duration and respective egg sizes. Within S. australis, variation in developmental rates among embryos was associated with the size of the egg mass, with less variation evident in smaller egg masses. Embryos located on the periphery of the egg mass and at the distal or unattached end of an individual egg strand developed significantly faster than those located deep within the egg mass. On average, embryos in small egg masses, consisting of five individual egg strands, developed significantly faster than those ...
Scientific reports, Jan 22, 2018
Shifts in species distribution, or 'range shifts', are one of the most commonly documente... more Shifts in species distribution, or 'range shifts', are one of the most commonly documented responses to ocean warming, with important consequences for the function and structure of ecosystems, and for socio-economic activities. Understanding the genetic signatures of range shifts can help build our knowledge of the capacity of species to establish and persist in colonised areas. Here, seven microsatellite loci were used to examine the population connectivity, genetic structure and diversity of Octopus tetricus, which has extended its distribution several hundred kilometres polewards associated with the southwards extension of the warm East Australian Current along south-eastern Australia. The historical distribution and the range extension zones had significant genetic differences but levels of genetic diversity were comparable. The population in the range extension zone was sub-structured, contained relatively high levels of self-recruitment and was sourced by migrants from...
Environmental Science and Pollution Research
The Science of the total environment, Jan 25, 2017
Estuaries provide a diverse mosaic of habitats which support both juveniles and adults of exploit... more Estuaries provide a diverse mosaic of habitats which support both juveniles and adults of exploited species. In particular, estuaries play an important role in the early life history of many penaeid prawn species. This study used a combination of stable isotope ecology and quantitative sampling to examine recruitment and the nursery function of seagrass habitats for Eastern King Prawn (Penaeus [Melicertus] plebejus), and the processes that contributed to this nursery role. Stable isotopes were used to assign prawns joining the adult stock to putative nursery habitat areas within the estuary. Emigrating prawns originated from only 11 of the 20 sites surveyed. Of these, 8 sites were designated as Effective Juvenile Habitat (EJH), and 5 sites designated as Nursery Habitat (NH). The contribution of individuals from different nursery areas to the adult stock was related to both the abundance of prawns within an area and the distance to the mouth of the estuary, and with the exception of ...
The Science of the total environment, Jan 2, 2017
Detection and quantification of poly- and perfluoroalkyl substances (PFASs) in aquatic organisms ... more Detection and quantification of poly- and perfluoroalkyl substances (PFASs) in aquatic organisms is increasing, particularly for saltwater species. Depuration can remove PFASs from the tissues of some species once they are removed from the contaminant source, but it is not known if this process occurs for saltwater crustaceans. Such information is important for managing human health risks for exploited migratory species following exposure. We present the results of a depuration trial for School Prawn (Metapenaeus macleayi) and Mud Crab (Scylla serrata), two commercially important crustaceans in Australia. Perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS), and perfluorooctanoic acid (PFOA) were present in samples of both species collected following exposure under natural conditions in contaminated estuaries. Depuration was tested in uncontaminated water for 33days. PFOA was present at levels close to LOR in both species, and was not detected after 4.5h and 72h in Sc...
Marine Biodiversity, 2016
Can J Fisheries Aquat Sci, 1994
Growth of somatic tissue in Phstololigo sp. was examined in terms of muscle fibre recruitment and... more Growth of somatic tissue in Phstololigo sp. was examined in terms of muscle fibre recruitment and growth. Muscle blocks and muscle fibres were measured and size frequency distributions compared between different size-classes of squid. Muscle biocks increased in size as individuals grew. The size frequency distribution of the muscle blocks suggested that this increase was due to both the generation of new muscle fibres and an increase in the size of existing muscle fibres. The size frequency distribution of muscle fibres was very similar in all size-classes of squid examined, and the presence of small muscle fibres i n all individuals suggested that fibre recruitment may be continuous. Growth of muscle tissue, by muscle fibre growth and recruitment, provides a mechanism to explain constant growth throughout the life cycle described for tropical squid. Two structural types of muscle fibres, mitochondria-poor and n~itochondria-rich, are present in juvenile and adult squid. A weak relationship between the ratio of the two muscle fibre types and dorsal mantle length suggests that generation of mitochondria-rich fibres may not be influenced by growth.
Growth-rate calculations based on statolith age estimates indicate that tropical squid are short-... more Growth-rate calculations based on statolith age estimates indicate that tropical squid are short-lived and grow continuously throughout their lifespan (Jackson, 1990; Jackson and Choat, 1992). Growth rates of tropical squid can be strongly influenced by changes in their environment, including temperature fluctuations (Forsythe and Hanlon, 1989), and availability of food (Forsythe, 1993). Consequently, growth rates, final size, and response to changing conditions of tropical squid may vary greatly within or between species (Jackson, 1990; Jackson and Choat, 1992). Apart from obtaining size-at-age information from statoliths, there is also the potential to obtain ecological information on past growth histories of some squid species (Jack
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Papers by Natalie Moltschaniwskyj