Download or read book Diet and Trophic Role of Western Rock Lobsters Panulirus Cygnus George in Temperate Western Australian Deep coastal Ecosystems 35 60m written by Kris Ian Waddington and published by . This book was released on 2008 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Removal of consumers through fishing has been shown to influence ecosystem structure and function by changing the biomass and composition of organisms occupying lower trophic levels. The western rock lobster (Panurilus cygnus), an abundant consumer along the temperate west coast of Australia, forms the basis of Australia's largest single species fishery, with catches frequently exceeding 11000 tonnes annually. Despite their high abundance and commercial importance, the diet and trophic role of adult lobster populations in deep-coastal-ecosystems (35-60 m) remains unknown. An understanding of the diet and trophic role of lobsters in these ecosystems is a key component of the assessment of ecosystem effects of the western rock lobster fishery. This study uses gut content and stable isotope analyses to determine the diet and trophic role of lobsters in deep-coastal ecosystems. Dietary analysis indicated adult lobsters in deep-coastal ecosystems were primarily carnivorous with diet reflecting food available on the benthos. Gut content analyses indicate crabs (62 %) and amphipods/isopods (~10 %) are the most important lobster dietary sources. Stable isotope analysis indicates natural diet of lobsters in deep coastal ecosystems is dominated by amphipods/isopods (contributing up to ~50 %) and crabs (to ~75 %), with bivalves/gastropods, red algae and sponges of lesser importance (
Download or read book Lobsters written by Bruce Phillips and published by John Wiley & Sons. This book was released on 2013-02-19 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: This expanded and fully updated Second Edition of the most comprehensive and successful book on lobsters, comprises contributions from many of the world’s experts, each providing core information for all those working in lobster biology, fisheries research and management and lobster aquaculture. Under the editorship of Bruce Phillips, the Second Edition of Lobsters: Biology, Management, Fisheries and Aquaculture delivers exhaustive coverage of these fascinating creatures, stretching from growth and development to management and conservation. A number of chapters from the First Edition covering Growth, Reproduction, Diseases, Behaviour, Nutrition, Larval and Post-Larval Ecology and Juvenile and Adult Ecology have been replaced by new chapters including Lobsters in Ecosystems, Genetics, Translocation, Climate Change, Ecolabelling of Lobsters, Casitas and Other Artificial Shelters, Systems to maximise Economic Benefits.. These new chapters reflect changes that are occurring in lobster management and new research developments brought on by social, climatic and economic changes. As well as information from new research output, information in each chapter is also included on individual commercial Genera, including aspects of Species and distribution, Predators and diseases, Ecology and behaviour, Aquaculture and enhancement, Harvest of wild populations and their regulations, Management and conservation. The chapter on slipper lobsters has also been expanded to include Thenus and Ibacus species which are now subject to commercial fisheries. The changes that have occurred in some lobster fisheries, the new management arrangements in place, the status of stocks and the current economic and social situation of each fishery have also been covered and discussed in great detail. Fisheries scientists, fisheries managers aquaculture personnel, aquatic and invertebrate biologists, physiologists, ecologists, marine biologists and environmental biologists will all find Lobsters Second Edition to be a vital source of reference. Libraries in all universities and research establishments where biological and life sciences and fisheries and aquaculture are studied and taught will find it an extremely valuable addition to their shelves.
Download or read book The Western Rock Lobster Panulirus Cygnus George written by and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Diet and Growth of Juvenile Western Rock Lobsters Panulirus Cygnus George written by L. M. Joll and published by . This book was released on 1984 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of Biological Data on the Western Rock Lobster Panulirus Cygnus George 1962 written by Bruce F. Phillips and published by . This book was released on 1980 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Rock Lobster Panulirus Cygnus A natural history written by Howard Gray and published by . This book was released on 1992 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Rock Lobster Panulirus Cygnus George written by and published by . This book was released on 1979 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Condition at Settlement of the Western Rock Lobster Panulirus Cygnus George written by Andrew John Limbourn and published by . This book was released on 2010 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: The condition at settlement of the western rock lobster pueruli presumably reflects both their energetic condition in reaching the near shore and subsequent recruitment into adult populations. In recruiting to the near shore the pueruli swim across the continental shelf where oceanographic conditions are complex and likely influence the success of recruitment. The results from the biochemical studies are interpreted in light of the oceanography off the coast of Western Australia. I investigated the nutritional condition of larval phyllosomata, post-larval puerulus and first instar post-pueruli juveniles of the spiny lobster, Panulirus cygnus, to determine energy use during the non-feeding transitional puerulus stage. Biochemical analyses of lipid, fatty acid (FA) and protein revealed that lipid, in particular phospholipids, is primarily used for energy during the nonfeeding puerulus stage. Monounsaturated FA showed the greatest decline with development, whereas the polyunsaturated FA showed a high degree of sparing, suggesting these FA are not used as a substrate for energy production. The knowledge gained on the biochemistry of energy use in P. cygnus was then used to investigate the spatial and temporal variability in the nutritional condition, in particular lipid condition, of puerulus collected at three near shore locations (Alkimos, Jurien Bay and Dongara) along the Western Australia coast, and one offshore location (Houtman Abrolhos Islands). The one offshore location was chosen as I hypothesised that arriving pueruli are likely to be in a better state of nutrition than those arriving at more coastal locations where the potential journey from offshore larval feeding grounds to the near shore is considerably greater. This element of my research showed lipid levels to be inversely related, generally, to shelf width but were variable, suggesting pueruli may travel complex trajectories to reach nearshore settlement. The lipid and FA composition of pueruli was also consistent with spatial and seasonal variation in Leeuwin Current and coastal productivity regimes.
Download or read book Mortality Growth and Movement of the Western Rock Lobster Panulirus Cygnus written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Rock Lobster Panulirus Cygnus written by Howard Gray and published by . This book was released on 1992 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: History of the rock lobster fishing industry in Western Australia.
Download or read book The Western Rock Lobster Panulirus Cygnusatural History written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Rock Lobster Panulirus Cygnus The history of the fishery written by Howard Gray and published by . This book was released on 1992 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Opportunities for the Holding fattening processing and Aquaculture of Western Rock Lobster Panulirus Cygnus written by and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Rock Lobster Panulirus Cygnus written by Howard Gray and published by . This book was released on 1990 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Independent Survey of the Breeding Stock and Migration of the Western Rock Lobster Panulirus Cygnus written by and published by . This book was released on 1998 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Western Rock Lobster Ecology written by and published by . This book was released on 2012 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variability in Settlement of Western Rock Lobster Panulirus Cygnus George Pueruli Within Jurien Bay Marine Park Western Australia written by Saxon King and published by . This book was released on 2009 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
