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New Species Of Polychaetous Annelids In The Collections Of The American Museum Of Natural History From Porto Rico Florida Lower California And British Somaliland American Museum Novitates
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Book Synopsis New Species of Polychaetous Annelids in the Collections of the American Museum of Natural History, from Porto Rico, Florida, Lower California, and British Somaliland. American Museum Novitates by :
Download or read book New Species of Polychaetous Annelids in the Collections of the American Museum of Natural History, from Porto Rico, Florida, Lower California, and British Somaliland. American Museum Novitates written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Species of Polychaetous Annelids in the Collections of the American Museum of Natural History, from Porto Rico, Florida, Lower California, and British Somaliland by : A. L. Treadwell
Download or read book New Species of Polychaetous Annelids in the Collections of the American Museum of Natural History, from Porto Rico, Florida, Lower California, and British Somaliland written by A. L. Treadwell and published by . This book was released on 1929 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the American Museum of Natural History by : American Museum of Natural History
Download or read book Bulletin of the American Museum of Natural History written by American Museum of Natural History and published by . This book was released on 1963 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises articles on geology, paleontology, mammalogy, ornithology, entomology, and anthropology.
Book Synopsis Hydroides of the World by : Elena Kupriyanova
Download or read book Hydroides of the World written by Elena Kupriyanova and published by CSIRO PUBLISHING. This book was released on 2023-07-03 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Serpulid polychaetes are a unique and highly specialised group of marine segmented worms that have adapted to inhabiting self-secreted calcareous tubes attached to a wide range of hard substrates. These animals are found across all depths and habitats of the world’s oceans, and some form mutually beneficial associations with live corals. The genus Hydroides is of special concern and importance, as it is not only the largest, but also one of the most ecologically and economically important groups of marine invertebrates because it includes notorious biofoulers and common bioinvaders that travel around the world hitchhiking on ships’ hulls. This is the first fully illustrated guide to this notorious serpulid genus of calcareous tubeworms, providing a comprehensive diagnostic treatment of all known species of the genus Hydroides. This important reference provides reliable identification tools to distinguish Australian tubeworms from potential alien invaders that constantly arrive from overseas and threaten Australia’s maritime transport, trade and mariculture.
Book Synopsis Miscellaneous Paper by : Coastal Engineering Research Center (U.S.)
Download or read book Miscellaneous Paper written by Coastal Engineering Research Center (U.S.) and published by . This book was released on 1975 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Species of Polychaetous Annelids from California, Mexico, Porto Rico, and Jamaica. American Museum Novitates by :
Download or read book New Species of Polychaetous Annelids from California, Mexico, Porto Rico, and Jamaica. American Museum Novitates written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis مجموعة الحيوانية في شبه الجزيرة العربية by :
Download or read book مجموعة الحيوانية في شبه الجزيرة العربية written by and published by . This book was released on 1979 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transactions of the San Diego Society of Natural History by : San Diego Society of Natural History
Download or read book Transactions of the San Diego Society of Natural History written by San Diego Society of Natural History and published by . This book was released on 1969 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Selected Bibliography of the Nearshore Environment by :
Download or read book A Selected Bibliography of the Nearshore Environment written by and published by . This book was released on 1975 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of over 2,900 references on ecological and coastal engineering subjects related to the nearshore environment of the Florida west coast. References are grouped by subject and alphabetized by author within each subject heading.
Book Synopsis Records of the Australian Museum by : Australian Museum
Download or read book Records of the Australian Museum written by Australian Museum and published by . This book was released on 1991 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Species of Polychaetous Annelids from Massachusetts and California. American Museum Novitates by :
Download or read book New Species of Polychaetous Annelids from Massachusetts and California. American Museum Novitates written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Catalog of the Library of the American Museum of Natural History: 59.2-59.57,5 by : American Museum of Natural History. Library
Download or read book Research Catalog of the Library of the American Museum of Natural History: 59.2-59.57,5 written by American Museum of Natural History. Library and published by . This book was released on 1978 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The National Union Catalog, Pre-1956 Imprints by :
Download or read book The National Union Catalog, Pre-1956 Imprints written by and published by . This book was released on 1968 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies from the Biological Stations by : Fisheries Research Board of Canada
Download or read book Studies from the Biological Stations written by Fisheries Research Board of Canada and published by . This book was released on 1961 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polychaetous Annelids from Africa in the Collections of the American Museum of Natural History. American Museum Novitates by :
Download or read book Polychaetous Annelids from Africa in the Collections of the American Museum of Natural History. American Museum Novitates written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies by : Fisheries Research Board of Canada
Download or read book Studies written by Fisheries Research Board of Canada and published by . This book was released on 1961 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms of Sound Production in the Ariid Catfishes Galeichthys and Bagre by : William N. Tavolga
Download or read book Mechanisms of Sound Production in the Ariid Catfishes Galeichthys and Bagre written by William N. Tavolga and published by . This book was released on 1962 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The skeletal basis of the sound producing mechanism in the ariid catfishes Galeichthys felis and Bagre marinus consists of a thin shelf of bone which is firmly attached to the anterior dorsal wall of the swim bladder. This so-called 'elastic spring,' or 'Springfederapparat,' is formed from the parapophysis of the fourth vertebra. The anterior ramus of this parapophysis, herein named the 'Müllerian ramus' (after Johannes Müller who, in 1842, first described the structure), is the main vibrating element in sound production. The skulls and anterior vertebral complexes of Galeichthys and Bagre are figured and described, with comparisons with a non-sonic silurid form, Wallago. The 'protractor muscle' (so named by Bridge and Haddon in 1893) which activates the Müllerian ramus is a highly vascularized conical muscle, the origin of which is on the under side of the epiotic lamina and insertion on the Müllerian ramus. It is innervated by the dorsal branch of the occipital nerve. The relationship of this nerve to the cranial nerves of higher vertebrates is controversial, but it is probably homologous with the hypoglossal (XII). Stimulation of the protractor muscle or its nerve supply with repetitive spike-form potentials results in an audible sound output from the Springfederapparat. This response can be recorded and analyzed, and its fundamental pitch is equivalent to the pulse frequency of the stimulus. The protractor muscle is remarkable in that it can withstand stimulations of 300 or more pulses per second without going into immediate tetany. In Bagre, the frequency response of the sonic system is about an octave higher than that in Galeichthys. Spontaneous sounds from these species consist of low-pitched grunts (fundamental pitch of about 150 cycles per second) and, in Bagre, higher, sob-like sounds (400 cycles per second or over). The harmonic components of both artificially induced and spontaneous sounds can be influenced by the amount of sound reflectance in the external environment. Even under partially anechoic conditions, the sound output is virtually a pure tone. Damage to the swim bladder reduces the amplitude of the sound but not its timbre (i.e., harmonic content). It was concluded that the swim bladder does not serve as a resonating chamber for these sounds, nor is it a true amplifier. Rather, it transfers the energy from the small area of the vibrating Müllerian ramus to the larger area of its entire outer surface, thus making the propagation of the sound from its source to the water more efficient. In acoustical and electronic terms, the swim bladder is an impedance matching device"--P. 27.
