Do intertidal organisms simply respond to the rise and fall of tides, or do they possess biological timing and navigation mechanisms that allow them to anticipate when conditions are most favourable? How are the patterns of growth, development and reproduction of some marine plants and animals related to changes in day-length or to phases of the moon? The author describes how marine organisms, from single cells to vertebrates, on sea shores, in estuaries and in the open ocean, have evolved inbuilt biological clockwork and synchronisation mechanisms which control rhythmic processes and navigational behaviour, permitting successful exploitation of highly variable and often hostile environments. Adopting a hypothesis-testing and experimental approach, the book is intended for undergraduate and postgraduate students of marine biology, marine ecology, animal behaviour, oceanography and other biological sciences and also as an introduction for researchers, including physiologists, biochemists and molecular biologists entering the field of chronobiology.

Describes biological rhythms and clocks evolved by marine organisms in relation to tidal, daily, lunar and seasonal life cycle events.

The study of how solar- and lunar- related rhythms are governed by living pacemakers within organisms constitutes the scientific discipline of chronobiology. Few fields encompass the breadth of science that is associated with this subject, which is at the cutting edge of fields ranging from microbial genetics to ethology to treatment of human psychiatric illnesses. In order to recognise that no individual could do justice to the field in writing a comprehensive text, a group of experienced editors and contributors have collaborated to produce Chronobiology. Written in a clear style and fully illustrated to elucidate difficult points, the book assumes no previous background in neuroscience or maths and reduces technical terminology to a minimum. Examples from the real world and from current and classic research are included.

Scientific evidence for biological clocks linked to the Moon has only recently become recognized. This book describes the growing evidence for lunar influences on animal behaviour, and considers whether humans may be affected too

There is more to biological rhythms than circadian clocks. This book aims at promoting the exciting potential of a deeper understanding of circannual, circatidal, and circalunar clocks. It highlights new developments, summarizes existing knowledge, and integrates different perspectives with the tools and ideas of diverse fields of current biology. For predominantly pragmatic reasons, research in recent decades was mostly concerned with circadian clocks. Clocks on other timescales, however, have been largely neglected and therefore still appear "enigmatic". Thanks to the rapid development of methods in molecular biology as well as in ecology, we are now able to re-approach these clocks. Laboratories around the world are showing fresh interest and substantial progress is being made in many independent projects. The book's two sections address the moon-derived circatidal, circasemilunar, and lunar cycles on the one hand (10 chapters), and the sun-derived circannual cycles on the other (6 chapters). This work brings together authors with an expansive array of expertise and study systems, ranging from tidal cycles of marine invertebrates to annual cycles of birds and mammals, and from behavioral to genetic and epigenetic backgrounds. While great challenges remain to be mastered, the book aims at conveying the excitement of unraveling, broadly, the rhythms of life.

Life on earth arose through the creative interplay of prebiotic conditions on earth and the everlasting reliable macrocosmic changes of light and darkness. The first life molecules were confronted with the Earth's two-faced environment manifesting itself as a rhythm of a damaging light phase (day) and a harmless low light dark phase (night) produced by the apparent celestial movements within the earth-moon-sun system. It required two mutually complementing molecule types: ribonucleic acids and peptides, which had to adapt jointly to that fundamental duality in order to achieve a 'duration across change'. Both combined into a helically intertwined ribonucleopeptide filament as the initial molecular structure of life on earth. The predictable alternation of a damaging (UV irradiation, high-energy sun light) and a non-damaging (low-energy moon light) phase lead to the inclusion of rhythmic repair and timing in molecular life from begin on. The ribonucleopeptide filament responded to the dual qualities of its environment by behaving like an 'oscilloid'. Rhythmically alternating contraction to prevent damage during daytime and expansion to allow self-sustained repair during nighttime initiated the oscillation of the primordial biological timer as a molecular reflection of the macrocosmic time on Earth impacted by the light/dark rhythm. Macrocosmic time is both circular, because days, months and years consist of recurring cycles of light and darkness, and linear, because successive days, months and years are not identical repeats of the preceding ones and follow each other in a row. Corresponding to this yin/yang structure of macrocosmic time, biological time is also cyclical and linear at the same time. Under this perspective, life arose as an earth-bound molecular pattern instructed by celestial rhythms. Interestingly, there exists a correspondence to the dual, mutually complementing molecular basis of life in ancient Chinese mythology. A helically intertwined ribonuclopeptide filament represents an equivalent, a living reflection, of the T'ai chi symbol with its mutually complementing, inseparable black and white components that illustrate the fundamental duality of darkness and light or night and day on Earth. Yang and Yin, and Ch'ien and K'un, constitute the basic duality of the yin/yang philosophy and the ancient Chinese Book of Changes, the I Ging, respectively. Fu-hsi and Nü-kua, the personified versions of this basic duality, are characterised by their helically intertwining snake- or dragon-like lower bodies. Together, they are linking Earth to Heaven.

Covers all aspects of crustacean biology, physiology, behavior, and evolution.