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Vision in Cephalopods, Volume II

Vision in Cephalopods, Volume II
Author: Daniel Osorio
Publisher: Frontiers Media SA
Total Pages: 121
Release: 2021-09-29
Genre: Science
ISBN: 2889714071

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Vision in Cephalopods

Vision in Cephalopods
Author: Frederike Diana Hanke
Publisher: Frontiers Media SA
Total Pages: 161
Release: 2018-03-13
Genre:
ISBN: 2889454304

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Cephalopods usually have large and mobile eyes with which they constantly scan their environment. The eyes of cephalopods are single-chamber eyes which show resemblance to vertebrate eyes. However there are marked differences such as the cephalopod eye having an everted retina instead of an inverted retina found in vertebrates. Their visual system allows the cephalopods, depending on species, to discriminate objects on the basis of their shapes or sizes, images from mirror images or to learn from the observation of others. The cephalopod visual system is also polarization sensitive and controls camouflage, an extraordinary ability almost exclusive to all cephalopods; they are capable of rapidly adapting their body coloration as well as altering their body shape to any background, in almost any condition and even during self-motion. Visual scene analysis ultimately leads to motor outputs that cause an appropriate change in skin coloration or texture by acting directly on chromatophores or papillae in the skin. Mirroring these numerous functions of the visual system, large parts of the cephalopod brain are devoted to the processing of visual information. This research topic focuses on current advances in the knowledge of cephalopod vision. It is designed to facilitate merging questions, approaches and data available through the work of different researchers working on different aspects of cephalopod vision. Thus the research topic creates mutual awareness, and facilitates the growth of a field of research with a long tradition - cephalopod vision, visual perception and cognition as well as the mechanisms of camouflage. This research topic emerged from a workshop on “Vision in cephalopods” as part of the COST Action FA1301.


Vision in Cephalopods

Vision in Cephalopods
Author:
Publisher:
Total Pages: 0
Release: 2018
Genre:
ISBN:

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Cephalopods usually have large and mobile eyes with which they constantly scan their environment. The eyes of cephalopods are single-chamber eyes which show resemblance to vertebrate eyes. However there are marked differences such as the cephalopod eye having an everted retina instead of an inverted retina found in vertebrates. Their visual system allows the cephalopods, depending on species, to discriminate objects on the basis of their shapes or sizes, images from mirror images or to learn from the observation of others. The cephalopod visual system is also polarization sensitive and controls camouflage, an extraordinary ability almost exclusive to all cephalopods; they are capable of rapidly adapting their body coloration as well as altering their body shape to any background, in almost any condition and even during self-motion. Visual scene analysis ultimately leads to motor outputs that cause an appropriate change in skin coloration or texture by acting directly on chromatophores or papillae in the skin. Mirroring these numerous functions of the visual system, large parts of the cephalopod brain are devoted to the processing of visual information. This research topic focuses on current advances in the knowledge of cephalopod vision. It is designed to facilitate merging questions, approaches and data available through the work of different researchers working on different aspects of cephalopod vision. Thus the research topic creates mutual awareness, and facilitates the growth of a field of research with a long tradition - cephalopod vision, visual perception and cognition as well as the mechanisms of camouflage. This research topic emerged from a workshop on "Vision in cephalopods" as part of the COST Action FA1301.


Cephalopod Behaviour

Cephalopod Behaviour
Author: Roger T. Hanlon
Publisher: Cambridge University Press
Total Pages: 383
Release: 2018-03-22
Genre: Science
ISBN: 0521897858

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A fully updated overview of the causation, function, development and evolution of cephalopod behaviour, richly illustrated in full colour.


Cephalopod Cognition

Cephalopod Cognition
Author: Anne-Sophie Darmaillacq
Publisher: Cambridge University Press
Total Pages: 267
Release: 2014-07-10
Genre: Medical
ISBN: 1107015561

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Focusing on comparative cognition in cephalopods, this book illuminates the wide range of mental function in this often overlooked group.


The Brains and Lives of Cephalopods

The Brains and Lives of Cephalopods
Author: Marion Nixon
Publisher: Oxford University Press
Total Pages: 414
Release: 2003-09-04
Genre: Science
ISBN: 9780198527619

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The book describes the brains and sense organs of 57 of the 139 genera of the class Cephalopoda, many in great detail, as well as a variety of morphological features. The text is well-illustrated with fully labelled line drawings and photomicrographs. Attention is drawn to the many gaps in our knowledge of these intriguing marine invertebrates with a view to stimulating future research.


CephsInAction: Towards Future Challenges for Cephalopod Science

CephsInAction: Towards Future Challenges for Cephalopod Science
Author: Lindy Holden-Dye
Publisher: Frontiers Media SA
Total Pages: 185
Release: 2020-02-12
Genre:
ISBN: 288963437X

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The last five years have been extremely challenging, but also very innovative for cephalopod science, and the outstanding tradition of biological contribution with cephalopod molluscs as key players in science and human activities and interests has continued. This Research Topic is one of several dedicated to cephalopod molluscs (e.g., Hanke and Osorio, 2018; Ponte et al., 2018) hosted by Frontiers over the last few years, not to mention other papers published separately. Highlighting of cephalopod science is important because it has much to offer not only the life science community, but also more broadly the public perception of science and its understanding and relationship with scientific endeavour and cephalopods as living organisms and part of our everyday life (at least for most of us). This contribution illustrates the key needs that need to be overcome by the cephalopod research community, i.e. rapid and effective mechanisms for exchange of knowledge and resources, sharing of laboratory protocols, videos, tissues, samples and data-sets, innovative approaches and initiatives in public engagement. The cuttlefish comic included is an excellent example of a type of media that can be used to expand scientific knowledge to the public and human relationship with live animals. There are strategic challenges in convincing globally distributed policy makers and funders of the relevance of cephalopods in scientific advances, and also in the regulatory aspects, since cephalopods are the only invertebrates whose use is regulated in Europe in a research context and this increases the need for integrated oversight and direction in terms of ethics and animal welfare (e.g., Jacquet et al., 2019a; 2019b; Ponte et al., 2019). This Research Topic also aligns with the interests of the cephalopod community in stimulating public interest in cephalopods extending to a broader audience that could include chefs and gourmets, and fishers and scientists aiming to develop sustainable food resources. “CephsInAction: Towards Future Challenges for Cephalopod Science” Research Topic includes 14 papers from about 40 authors representing ten different countries, thus overlapping with the original parties that contributed to the COST FA1301 that, together with CephRes, promoted and supported this editorial initiative.


Octopus, Squid & Cuttlefish

Octopus, Squid & Cuttlefish
Author: Roger Hanlon
Publisher: University of Chicago Press
Total Pages: 225
Release: 2018-10-31
Genre: Science
ISBN: 022645973X

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“Cephalopods are often misunderstood creatures. Three biologists set the record straight on the behaviors and evolution of these invertebrates of the sea.” —Science News Largely shell-less relatives of clams and snails, the marine mollusks in the class Cephalopoda—Greek for “head-foot” —are colorful creatures of many-armed dexterity, often inky self-defense, and highly evolved cognition. They are capable of learning, of retaining information—and of rapid decision-making to avoid predators and find prey. They have eyes and senses rivaling those of vertebrates like birds and fishes, they morph texture and body shape, and they change color faster than a chameleon. In short, they captivate us. From the long-armed mimic octopus—able to imitate the appearance of swimming flounders and soles—to the aptly named flamboyant cuttlefish, whose undulating waves of color rival the graphic displays of any LCD screen, there are more than seven hundred species of cephalopod. Featuring a selection of species profiles, Octopus, Squid, and Cuttlefish reveals the evolution, anatomy, life history, behaviors, and relationships of these spellbinding animals. Their existence proves that intelligence can develop in very different ways: not only are cephalopods unusually large-brained invertebrates, they also carry two-thirds of their neurons in their arms. A treasure trove of scientific fact and visual explanation, this worldwide illustrated guide to cephalopods offers a comprehensive review of these fascinating and mysterious underwater invertebrates—from the lone hunting of the octopus, to the social squid, and the prismatic skin signaling of the cuttlefish. “After reading about the cephalopods’ abilities and behaviors, as well as their potential for advancing our lives, readers might think twice before ordering their next calamari appetizer.” —American Scientist


Cephalopod Culture

Cephalopod Culture
Author: José Iglesias
Publisher: Springer Science & Business Media
Total Pages: 493
Release: 2014-03-26
Genre: Science
ISBN: 9401786488

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Cephalopod Culture is the first compilation of research on the culture of cephalopods. It describes experiences of culturing different groups of cephalopods: nautiluses, sepioids (Sepia officinalis, Sepia pharaonis, Sepiella inermis, Sepiella japonica Euprymna hyllebergi, Euprymna tasmanica), squids (Loligo vulgaris, Doryteuthis opalescens, Sepioteuthis lessoniana) and octopods (Amphioctopus aegina, Enteroctopus megalocyathus, Octopus maya, Octopus mimus, Octopus minor, Octopus vulgaris, Robsonella fontaniana). It also includes the main conclusions which have been drawn from the research and the future challenges in this field. This makes this book not only an ideal introduction to cephalopod culture, but also a valuable resource for those already involved in this topic.


Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date

Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Total Pages: 398
Release: 2018-11-15
Genre: Nature
ISBN: 9251079897

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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.