Field Guide to Squids and Octopods of the Eastern North Pacific and Bering Sea PDF Download
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Author: Elaina M. Jorgensen
Publisher: Alaska Sea Grant College Program
ISBN:
Category : Cephalopoda
Languages : en
Pages : 104
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Book Description
This handy, fully illustrated guide is designed to help researchers and scientists identify squids and octopods found in the eastern North Pacific Ocean and the Bering Sea, regions that have been difficult to sample because of their rough seas and thus have been poorly known until now. Printed on waterproof paper, the book describes and illustrates forty-four species, with full scientific details and aids to identification."
Author: Elaina M. Jorgensen
Publisher: Alaska Sea Grant College Program
ISBN:
Category : Cephalopoda
Languages : en
Pages : 104
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Book Description
This handy, fully illustrated guide is designed to help researchers and scientists identify squids and octopods found in the eastern North Pacific Ocean and the Bering Sea, regions that have been difficult to sample because of their rough seas and thus have been poorly known until now. Printed on waterproof paper, the book describes and illustrates forty-four species, with full scientific details and aids to identification."
Author: C.H. FISCUS
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251079897
Category : Nature
Languages : en
Pages : 398
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Book Description
This is the third volume of the entirely rewritten, revised and updated version of the original FAO Catalogue of Cephalopods of the World (1984). The present Volume is a multiauthored compilation that reviews 13 families, i.e. (in alphabetical order), Alloposidae, Amphitretidae, Argonautidae, Bolitaenidae, Cirroctopodidae, Cirroteuthidae, Octopodidae, Ocythoidae, Opisthoteuthidae, Stauroteuthidae, Tremoctopodidae, Vampyroteuthidae, Vitreledonellidae, with 56 genera and the 280 species known and named to the date of the completion of the volume.
Author: Rui Rosa
Publisher: Academic Press
ISBN: 0128208945
Category : Science
Languages : en
Pages : 482
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Book Description
Octopus Biology and Ecology is an all-in-one resource that explains early life history stages, including age and growth maturation, distribution, migration, diet, predators and parasites related to these mollusks. Octopods are becoming a strong source of protein, with information on the species becoming more and more important to fisheries. This reference offers detailed information on the most economically important octopods in the world and addresses the management and future forecasting of octopod fisheries. Special attention is given to octopods in highly variable coastal environments as they constitute a particular challenge. Octopod populations (together with other cephalopod groups) have increased worldwide, suggesting that these commercially relevant mollusks will benefit from the conditions of the oceans of tomorrow (e.g., global warming and decreased competition and predator pressures). This is a complete resource for aquatic scientists, marine biologists, researchers, cephalopod biologists, cephalopod ecologists, fisheries and aquaculture scientists, regulators and students. ? Provides a thorough overview of the biodiversity of octopuses ? Presents a detailed information about 21 different species ? Includes a profound analysis of past, present, and future trends in octopus research
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 364
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Book Description
Author: Robert P. Stone
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 60
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Book Description
Author: Reid Brewer
Publisher:
ISBN:
Category : North Pacific giant octopus
Languages : en
Pages : 224
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Book Description
The North Pacific giant octopus (Enteroctopus dofleini) is an important member of pan-Pacific coastal ecosystems and represents a large incidental catch in Alaska; however little is known about the biology and ecology of this species, which hinders management. To improve our understanding of E. dofleini biology, I conducted a multiyear tagging study in a 25 km2 study area in the eastern Bering Sea (EBS). I used Visible Implant Elastomers to determine growth and movement patterns for E. dofleini and sacrificed octopus were examined to determine seasonal and sex-specific reproductive characteristics. Using tagging data and Cormack-Jolly-Seber models, I estimated survival and study-area abundance for E. dofleini and expanded the abundance estimates to neighboring areas where most of the incidental catch of octopus occurs. In this three-year study, a total of 1,714 E. dofleini were tagged and 246 were recaptured. In autumn when temperatures were warmest, E. dofleini had higher growth rates, moved more and both sexes were predominantly mature when compared to colder winter months. Size also played a role in E. dofleini ecology, with smaller octopus growing faster than larger octopus and larger, mature octopus moving more than smaller, immature octopus. The abundance estimate for octopus in the study area was 3,180 octopus or 127 octopus per km2, and annual survival was 3.33%. Using 20 years of data from the federal groundfish observer program, I estimated that the biomass for E. dofleini in the area where most of the incident catch occurs was 20,697 mt of octopus, an order of magnitude larger than the current biomass estimate for the entire EBS. Though the study area and the scale of the mark-recapture effort were limited, the survival and abundance estimates are from the same area where most of the octopus are in incidentally captured and represent an important first step in enhancing octopus management. However, the large estimates of biomass suggest the current management is too conservative and the estimates of survival suggest that management estimates of mortality are too low.
Author:
Publisher: Academic Press
ISBN: 0128003200
Category : Technology & Engineering
Languages : en
Pages : 479
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Book Description
Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries—volume 67 in the Advances in Marine Biology series—addresses major themes of growing research interest in the field of cephalopod research. The book is composed of four chapters incorporating the latest advances in biology, ecology, life cycles, cultivation, and fisheries of cephalopods. Each chapter is written by a team of internationally recognized authorities to reflect recent findings and understanding. The book represents a breakthrough contribution to the field of cephalopod science. Advances in Marine Biology was first published in 1963 under the founding editorship of Sir Frederick S. Russell, FRS. Now edited by Michael P. Lesser, with an internationally renowned editorial board, the serial publishes in-depth and up-to-date reviews on a wide range of topics that appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology, and biological oceanography. Eclectic volumes in the series are supplemented by thematic volumes on such topics as the biology of calanoid copepods. Covers cephalopod culture Covers environmental effects on cephalopod population dynamics Covers biology, ecology and biodiversity of deep-sea cephalopods Covers life stage transitions in successful cephalopod life strategies
Author: David Thomas Drumm
Publisher:
ISBN:
Category : Marine animals
Languages : en
Pages : 308
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Book Description
A current and comprehensive species list of marine invertebrates of Alaska is essential for effective management of living marine resources, sustainable fisheries, conservation of vulnerable ecosystems, and advancement of our knowledge of biodiversity and ecosystem function. Furthermore, the most current checklist available to resource managers and scientists is quite dated and limited in that it only includes the marine invertebrates of the southern coast of Alaska to California. Since that checklist was published, many new species have been described, many range extensions have been discovered, and considerable changes in higher-level systematics have been made. The checklist that we have compiled lists 3708 species and presents for each species the currently accepted scientific name and its significant synonyms, common names, type localities, geographic and depth distributions, a general statement of abundance in Alaska when known (e.g., rare, uncommon, common, abundant), and general remarks. It includes species recorded in the marine waters of Alaska from the intertidal zone, continental shelf, and upper continental slope to abyssal depths, from the Beaufort Sea at the Arctic border with Yukon, Canada; the eastern Chukchi Sea, the eastern Bering Sea, the Aleutian Islands to the western border with Russia; and the Gulf of Alaska to Dixon Entrance at the southern border with British Columbia. Sound and reliable taxonomic identifications are necessary to monitor and predict changes in the distribution and abundance of marine species. The current status and future direction of the study of Alaskan marine invertebrate biodiversity are briefly discussed.
Author: Rui Rosa
Publisher: Frontiers Media SA
ISBN: 2832530796
Category : Science
Languages : en
Pages : 217
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Book Description
