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Book The Effects of Diet and Ration on the Growth and Survival of Pacific Herring Clupea Harengus Pallasi Larvae

Download or read book The Effects of Diet and Ration on the Growth and Survival of Pacific Herring Clupea Harengus Pallasi Larvae written by C. W. Haegele and published by 1978. This book was released on 1978 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fish atlas of the Celtic Sea North Sea and Baltic Sea

Download or read book Fish atlas of the Celtic Sea North Sea and Baltic Sea written by Henk J.L. Heessen and published by BRILL. This book was released on 2023-09-14 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atlas presents a unique set of abundance data to describe the spatial, depth, size, and temporal distribution of demersal and pelagic fish species over an extensive marine area, together with accounts of their biology. A large number of pictures, graphs and distribution maps illustrate the text. By largely avoiding - or at least explaining - scientific terms and providing extensive references, the book should be useful for both laymen and scientists. The quantitative information on some 200 fish taxa is derived from 72,000 stations fished by research vessels during the period 1977-2013. The area covers the northwest European shelf from west of Ireland to the central Baltic Sea and from Brittany to the Shetlands. Although the surveys extend beyond the shelf edge, only taxa reported at least once in waters less than 200 m are included. Typical deep-water species and typical fresh-water species are excluded. We hope this publication will contribute to gaining a better understanding of the ocean ecosystems.

Book Atlantic Herring Clupea Harengus Harengus Fishery Management Plan FWP

Download or read book Atlantic Herring Clupea Harengus Harengus Fishery Management Plan FWP written by and published by . This book was released on 1999 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Feeding Ecology of Larval Atlantic Herring Clupea Harengus

Download or read book Feeding Ecology of Larval Atlantic Herring Clupea Harengus written by Carissa Josephine Wilson and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Newfoundland Atlantic herring (Clupea harengus) populations are composed of spring- and autumn- spawning components, targeted as a mixed fishery. Until the early 2000s, the spring-spawning component accounted for ~90% of the total catch. Within the last decade, the relative abundance of spring-spawning herring has decreased and autumn-spawning herring now dominate the catch in most areas. Year-class strength is largely determined by survival rate during the larval stage. The objective of this study is to identify the main prey of larval herring and explore the link between main prey availability and subsequent recruitment strength. Herring larvae were collected using bongo tows in Trinity Bay, Newfoundland, in the autumns of 2002 (15-52 mm Standard Length), 2006 (5-15 mm SL) and 2013 (5-15 mm SL). Diet composition was identified and otoliths were extracted to estimate age. Nauplius stages of the calanoid copepod Temora longicornis and the cyclopoid copepod Oithona similis dominated the diet during the early larval stage (5-15 mm SL) in 2006 and 2013, respectively. In 2002, the mid-size calanoid copepod Pseudocalanus sp. strongly dominated the diet in the mid-larval stage (15-30 mm SL). In the late larval stage (>30 mm SL) in 2002, larval diet showed a shift to the larger calanoid copepod Calanus sp. The seasonal abundance peak of the main prey during the mid-larval stage, Pseudocalanus sp., shifted from spring to autumn during the mid-2000s, concurrent with the period of changing relative abundance of spawning components. A positive relationship was found between the abundance of Pseudocalanus sp. in October and recruitment of autumn-spawning herring, thereby supporting the idea that survival may be driven by preferred prey availability during the larval stage. We could not reject the hypothesis that the observed shift in herring population dynamics in the mid-2000s resulted from higher survival rates in autumn-hatched larvae through increased availability of their main prey.

Book Canadian Journal of Fisheries and Aquatic Sciences

Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2014-05 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fish Reproductive Biology

Download or read book Fish Reproductive Biology written by Tore Jakobsen and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish recruitment is a key process for maintaining sustainable fish populations. In the marine environment, fish recruitment is carried out in many different ways, all of which have different life history strategies. The objective of this book is to argue for greater linkages between basic and applied research on fisheries recruitment, and assessment and management of exploited fish stocks. Following an introductory chapter, this second edition of Fish Reproductive Biology is organized into 3 main sections: Biology, Population Dynamics and Recruitment Information Critical to Successful Assessment and Management Incorporation of Reproductive Biology and Recruitment Considerations into Management Advice and Strategies The authors collectively bring a wide range of diverse experience in areas of reproductive biology, fisheries oceanography, stock assessment, and management. Fully updated throughout, the book will be of great interest to a wide audience. It is useful as a textbook in graduate and undergraduate courses in fisheries biology, fisheries science, and fisheries resource management and will provide vital information for fish biologists, fisheries scientists and managers.

Book Main Prey and Predators of Atlantic Herring Clupea Harengus L in the Gulf of St Lawrence During the Mid 1980s Mid 1990s and Early 2000s

Download or read book Main Prey and Predators of Atlantic Herring Clupea Harengus L in the Gulf of St Lawrence During the Mid 1980s Mid 1990s and Early 2000s written by Canada. Department of Fisheries and Oceans and published by Mont-Joli, Québec. : Fisheries and Oceans Canada. This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Utilization and Marketing of Baltic Herring

Download or read book Utilization and Marketing of Baltic Herring written by and published by Nordic Council of Ministers. This book was released on 1995 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Feeding Ecology of Baltic Sea Herring Clupea Harengus L

Download or read book Feeding Ecology of Baltic Sea Herring Clupea Harengus L written by Fredrik Arrhenius and published by . This book was released on 1995 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: