The Mediterranean aeolid nudibranch "Cratena peregrina". Feeding rates and behaviour PDF Download
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Author: Kira Izabela Kremer
Publisher: GRIN Verlag
ISBN: 3346245055
Category : Science
Languages : en
Pages : 51
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Book Description
Bachelor Thesis from the year 2019 in the subject Biology - Behaviour, grade: 1,0, University of Rostock (Biowissenschaften), language: English, abstract: In order to investigate the feeding behaviour and the feeding rate of Cratena peregrina, two different experiments were conducted. Behaviour experiments were performed in a tank and feeding rate experiments in a beaker. A total of 31 individuals was tested, 22 hours each, with full surveillance in during the trials. There are three major research hypotheses investigated in this study: 1) Cratena peregrina is able to locate Eudendrium spec. colonies in its surrounding. 2) Cratena peregrina feeds systematically on the hydroid colonies. 3) The feeding rate correlates with the length of the molluscs. This study was also conducted regarding possible contribution to the biomedical field, concerning the handling and observation of nudibranch specie. Moreover, it hopes to reveal useful information for further studies about the biology and ecology of nudibranchs. For these purposes, two tests were developed: one for evaluating the feeding behaviour of Cratena peregrina and one for determining the feeding rate of the individuals.
Author: Kira Izabela Kremer
Publisher: GRIN Verlag
ISBN: 3346245055
Category : Science
Languages : en
Pages : 51
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Book Description
Bachelor Thesis from the year 2019 in the subject Biology - Behaviour, grade: 1,0, University of Rostock (Biowissenschaften), language: English, abstract: In order to investigate the feeding behaviour and the feeding rate of Cratena peregrina, two different experiments were conducted. Behaviour experiments were performed in a tank and feeding rate experiments in a beaker. A total of 31 individuals was tested, 22 hours each, with full surveillance in during the trials. There are three major research hypotheses investigated in this study: 1) Cratena peregrina is able to locate Eudendrium spec. colonies in its surrounding. 2) Cratena peregrina feeds systematically on the hydroid colonies. 3) The feeding rate correlates with the length of the molluscs. This study was also conducted regarding possible contribution to the biomedical field, concerning the handling and observation of nudibranch specie. Moreover, it hopes to reveal useful information for further studies about the biology and ecology of nudibranchs. For these purposes, two tests were developed: one for evaluating the feeding behaviour of Cratena peregrina and one for determining the feeding rate of the individuals.
Author: Helmut Debelius
Publisher:
ISBN:
Category : Nudibranchia
Languages : en
Pages : 368
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Book Description
Author: Jakov Prkić
Publisher:
ISBN: 9789534824603
Category :
Languages : en
Pages : 463
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Book Description
Author: Malacological Society of London
Publisher:
ISBN:
Category : Mollusks
Languages : en
Pages : 502
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Book Description
Author: K. Venkataraman
Publisher: Springer Science & Business Media
ISBN: 3642382002
Category : Science
Languages : en
Pages : 484
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Book Description
This book provides insights into various aspects of marine faunal communities in India, which are extremely diverse due to the geomorphologic and climatic variations along the Indian coasts. Consisting of 30 chapters by experts in their respective fields, it is divided into two parts: · Part I: Tropical Marine Faunal Communities · Part II: Ecology and Conservation Part I highlights the diversity and distribution of Foraminifera; sponges associated with seagrass; Polychaeta; Opisthobranchia; oysters; copepods; horseshoe and brachyuran crabs; echinoderms; ascidians; fishes; fish parasites; and sea mammals. Topics of Part II include the status and environmental parameters of benthos; the status of coral reefs; the invasion of snowflake coral; the recovery of bleached corals; the socioeconomics and management of dugong; marine biodiversity conservation and management in India; the assessment of the marine fauna of the Indian Wildlife Protection Act; and marine biodiversity protected areas in India. This book will serve as a valuable reference work for marine scientists, as well as for environmental managers and policy makers.
Author: Joseph Heller
Publisher: Springer
ISBN: 3319154524
Category : Science
Languages : en
Pages : 355
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Book Description
This richly illustrated book presents the diversity and natural history of sea snail groups. By integrating aspects of morphology, ecology, evolution and behaviour, it describes how each group copes with problems of defence, locomotion, nutrition, reproduction and embryonic development. First come general characteristics of the Mollusca, to which snails belong; and next, characteristics by which snails (Gastropoda) differ from other molluscs. Then a broad, panoramic view of all major sea snail groups, from the primitive to the more advanced, is presented, including both the more abundant and some remote ones of special interest. In detailing primitive sea snails, first limpets (Patellogastropoda) are described, followed by brush snails (Vetigastropoda: top-shells, turbans and allies) and nerites (Neritimorpha), a small group with remarkably high variation in shell colour and in habitats. In looking at advanced-snails (Caenogastropoda), it details the herbivorous grazers and filter-feeders and the many voracious predators, some which use venomous darts. The book also covers sea slugs (Opisthobranchia), which have shifted from mechanical to chemical defence; some are herbivores, some use their food to harness solar energy, others are predators that gain stinging cells and poisonous compounds from their food. In addition, readers will learn about aspects of sea snails in human culture, including use as sacred artefacts and objects of magic and money, as a source of the royal and sacred dyes of purple and blue and as holy ceremonial trumpets. The text, in which scientific terms are accompanied by parallel common ones, is accompanied by over 200 illustrations (mostly in colour). This comprehensive, insightful portrait of sea snails will appeal to marine biologists, zoology lecturers and students, biology teachers, field-school instructors, nature reserve wardens, amateur naturalists, as well as to lecturers and learners of human culture.
Author: Carina Sim-Smith
Publisher:
ISBN: 9780478146875
Category : Marine parks and reserves
Languages : en
Pages : 108
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Book Description
Author: Peter Wirtz
Publisher:
ISBN:
Category : Marine invertebrates
Languages : en
Pages : 310
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Book Description
Author: Nancy Knowlton
Publisher: National Geographic Books
ISBN: 1426206437
Category : Nature
Languages : en
Pages : 216
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Book Description
In this refreshing, reader-friendly, and colorfully illustrated book about the ocean, renowned marine scientist Knowlton presents an overview of the hundreds of species that have been discovered in the past decade.
Author: Cedric Gillott
Publisher: Springer Science & Business Media
ISBN: 1402031831
Category : Science
Languages : en
Pages : 835
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Book Description
Gillott’s thorough yet clear writing style continues to keep Entomology near the top of the class as a text for senior undergraduates, and for graduate students and professionals seeking an introduction to specific entomological topics. The author’s long-held belief that an introductory entomology course should present a balanced treatment of the subject is reflected in the continued arrangement of the book in four sections: Evolution and Diversity, Anatomy and Physiology, Reproduction and Development, and Ecology. For the third edition, all chapters have been updated. This includes not only the addition of new information and concepts but also the reduction or exclusion of material no longer considered "mainstream", so as to keep the book at a reasonable size. Based on exciting discoveries made during the previous decade, the topics of insect evolutionary relationships, semiochemicals, gas exchange, immune responses (including those of parasites and parasitoids), flight, and the management of pests have received particular attention in the preparation of the third edition. Overall, more than 30 new or significantly revised figures have been incorporated.
