Download or read book On the Collection of Hydroids Cnidaria Hydrozoa Hydroidolina from the West Coast of Sweden with a Checklist of Species from the Region written by Dale R. Calder and published by . This book was released on 2012 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive and Developmental Strategies written by Kazuya Kobayashi and published by Springer. This book was released on 2018-06-01 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides new insights into the universality of biological systems in animal reproduction and development by a comparative study of a variety of mechanisms in animals ranging from basal invertebrates to vertebrates, including mammals. Animals accomplish genetic diversity through meiosis and fertilization, and during embryogenesis animals must produce specialized cell types, including germ cells, in accordance with their individual body plan. This series of phenomena is essential to the continuity of life in the animal kingdom, and animals show various reproductive and developmental strategies. This volume, comprising four parts, reviews animal kingdom diversity, including reproductive strategies and germ cell differentiation mechanisms (Part 1), sex determination and differentiation (Part2), the mechanisms of fertilization (Part 3), and body axis formation (Part 4). Readers will find descriptions of the reproduction or development of 180 species, 13 phyla, 35 classes, 74 orders, 117 families, and 151 genera in this book. Of particular interest is the diversity of molecules and mechanisms used to achieve the same biological purpose in different animals. Undergraduates, graduate students, and professional scientists who want a deeper understanding of animal reproductive and developmental mechanisms will find this book to be of great value.
Download or read book Additions to the Hydroids Cnidaria Hydrozoa of the Bay of Fundy Northeastern North America with a Checklist of Species Reported from the Region written by Dale R. Calder and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On a Collection of Hydroids Cnidaria Hydrozoa from the Southwest Coast of Florida USA written by author 1 and published by . This book was released on 2019 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Abstract: Sixty species of hydroids, assigned to 24 families and 39 genera, are recognized and discussed in a collection of material from the southwest coast of Florida. One new species (Clytia joycei) is described from turtlegrass (Thalassia testudinum) and reported as well from the Caribbean coast of Panama. Under provisions of the First Reviser Principle in the International Code of Zoological Nomenclature, Antennopsis nigra Nutting, 1900 is assigned precedence over its simultaneous synonym A. longicorna Nutting, 1900. Also included as a synonym of A. nigra is A. sinuosa Fraser, 1947b. The species is now assigned to Nemertesia Lamouroux, 1816, as N. nigra. Following Reversal of Precedence provisions in the code, the well-known name Halecium nanum Alder, 1859 is designated as valid and conserved as a nomen protectum, while Hydra articulata Bosc, 1797 is relegated to a nomen oblitum. The genus Monotheca Nutting, 1900 is upheld as valid on the basis of both morphological and molecular evidence. Sertularia pourtalesi Nutting, 1904, a seldom-reported species, is assigned to Dynamena Lamouroux, 1812 and recognized as distinct from D. disticha (Bosc, 1802). Calyptospadix cerulea Clarke, 1882 and Bimeria franciscana Torrey, 1902 (also known as Garveia franciscana) are taken to be conspecific, with Calyptospadix Clarke, 1882 treated as a valid genus. Confusion over the identity of Lovenella gracilis Clarke, 1882 in literature on North American hydroids is addressed, and topotypic specimens from the Chesapeake Bay region are illustrated to document characters that distinguish the species. Campanularia colombiana (Wedler, 1976) is reported for the first time outside the Caribbean coast of Colombia. The fauna studied here consists largely of species known to occur in the tropical and subtropical western Atlantic. [Zoobank URL: urn:lsid:zoobank.org:act:4C926BE2-D75D-449A-9EAD-14CADACFFADD]. Keywords: Coelenterata, Anthoathecata, Hydroidolina, Leptothecata, marine invertebrates, Medusozoa, Gulf of Mexico, taxonomy, zoological nomenclature"--Page 3.
Download or read book The Hydroids of the West Coast of North America written by Charles McLean Fraser and published by . This book was released on 1911 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroids of the Swedish West Coast written by William James Rees and published by . This book was released on 1969 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroids of Greenland and Iceland Cnidaria Hydrozoa written by Peter Schuchert and published by Museum Tusculanum Press. This book was released on 2001 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroida no 1 Hartlaub Clemens Revision der sertularella arten 1900 no 2 Nutting C C The hydroids of the Woods Holl region 1901 no 3 Nutting C C The hydroids 1901 no 4 Torrey H B The Hydroida of the Pacific Coast of North America 1902 written by and published by . This book was released on 1900 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Names of Hydroids Cnidaria Hydrozoa Established by Charles McLean Fraser 1872 1946 Excluding Those from Allan Hancock Expeditions written by Dale R. Calder and published by . This book was released on 2018 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An account is given of the names of families, genera, and species of hydroids established by C.M. Fraser of Canada, excluding those from Allan Hancock Pacific Expeditions and the Allan Hancock Caribbean Sea Expedition. The names of four families, 11 genera, and 101 species are attributed to him in this work, complementing those of another two genera and 164 species described by Fraser in various Allan Hancock publications. Information is provided on type localities of his new species, on locations and kinds of type material in existence, where known, and on the current taxonomic status of families, genera, and species described by him in works reviewed herein. Two replacement names (Thuiaria geniculata Fraser, 1918a and Salacia fraseri Calder, 1991) exist for Thuiaria distans Fraser, 1914a (not Thuiaria distans Allman, 1877). The widely overlooked senior synonym, T. geniculata, is recognized as the valid name of the species. Diphasia alta nom. nov. is proposed as a new replacement name for the permanently invalid junior primary homonym Diphasia robusta Fraser, 1943a (not D. attenuata robusta Billard, 1924). In addition, Cryptolaria crassa nom. nov. is proposed as a new replacement name for the junior secondary homonym Cryptolaria rigida (Fraser, 1948) [not C. rigida (Fraser, 1940a)]. Lectotypes have been designated for 47 of the species to establish objective standards for application of their names. Corymorpha adventitia Fraser, 1941b, from the Pacific coast of Panama, is assigned to Ralpharia Watson, 1980, as R. adventitia. No type specimens are known to exist for seven of the species considered, including one holotype (of Hebella eximia Fraser, 1944a) missing from its bottle. Particular attention has been paid to dating and chronology of the 51 publications of Fraser covered in this work. Earlier bibliographic errors are corrected, most notably establishing that the book Distribution and relationship in American hydroids was published in early 1947 rather than 1946 as per the title page. Keywords: Protist, bibliography, Hydroidolina, invertebrate zoology, marine biology, Medusozoa, museum collections, natural history, taxonomy, zoological nomenclature"-- page5.
Download or read book Report on the Hydroids Collected on the Coast of Alaska and the Aleutian Islands written by Samuel Fessenden Clarke and published by . This book was released on 1876 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Benthic Hydroids Cnidaria Hydrozoa from the Weddell Sea Antarctica written by Joan J. Soto Àngel and published by . This book was released on 2019 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrozoans are a conspicuous component of Antarctic benthic communitites. Recent taxonomic effort has led to a substantial increase in knowledge on the diversity of benthic hydroids from some areas of the Southern Ocean, including the Weddell Sea, the largest sea in the Antarctic region. However, the study of many hydrozoan taxa are still pending, and the diversity in this huge region is expected to be higher than currently known. In order to contribute to the knowledge of taxonomy, ecology and distribution of these cnidarians, a study of unpublished material collected by several German Antarctic expeditions aboard the RV Polarstern in the eastern sector of the Weddell Sea has been conducted. A total of 77 species belonging to 22 families and 28 genera of benthic hydroids have been inventoried, constituting the most prolific collection hitherto analyzed.
Download or read book American Hydroids The Campanularidae and the Bonneviellidae written by Charles Cleveland Nutting and published by . This book was released on 1915 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the Gymnoblastic Or Tubularian Hydroids written by George James Allman and published by . This book was released on 1871 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notes on Some Sertulariid Hydroids Cnidaria Hydrozoa from the Tropical Western Pacific with Descriptions of Nine New Species written by Horia Radu Galea and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the Gymnoblastic Or Tubularian Hydroids The genera and species of the Gymnoblasta written by George James Allman and published by . This book was released on 1872 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroids of the Atlantic Coast of North America written by Charles McLean Fraser and published by . This book was released on 1944 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroids and Hydromedusae Cnidaria Hydrozoa from the Fjords Region of Southern Chile written by Horia R. Galea and published by . This book was released on 2007-01-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
