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Chondrichthyes. --- Teeth. --- Odontography --- Odontology --- Mouth --- Dentistry --- Dentition --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes
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Chondrichthyes --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes --- Physiology. --- Anatomy.
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Chondrichthyes --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes --- Physiology. --- Ecology. --- Anatomy.
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Sharks --- Chondrichthyes --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes
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Shark conservation and management is often hindered by a lack of basic biological information for most species. An understanding of the age structure and growth dynamics of a population is important for effective conservation and management because this information is often utilized for determination of natural mortality and longevity. Ultimately age and growth information is used for calculation of vital rates in population models. Over the last few years there have been advances in the quantitative study of age and growth of chondrichthyan fishes. Novel approaches to ageing of various chondrichthyan fishes continue to arise. This volume is a collection of papers on several of these topics that include new hard parts (e.g. caudal thorns) for assessments of age, new techniques for validation (e.g. bomb radiocarbon) and reexaminations of previous age and growth models. This volume also contains papers on the importance of assessing the precision and accuracy of statistical formulas, analyses, and models that are used in age and growth studies. There is currently a great deal of research being conducted, some of which is truly "pushing the envelope," in attempts to assess the life history parameters of numerous chondrichthyan fishes.
Chondrichthyes. --- Fishes. --- Fish --- Pisces --- Aquatic animals --- Vertebrates --- Fisheries --- Fishing --- Ichthyology --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes
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Chondrichthyes are a group of cartilaginous fish, where we have sharks, rays, and chimeras as members. This group plays an important role in aquatic ecology, as they act as predators throughout the food chain (e.g., sharks). However, many populations of Chondrichthyes are threatened by several factors (increased direct fishing, high mortality rate as accompanying fauna, marine pollution, habitat destruction, etc.). These declines are evident in many parts of the world and have come to the attention of scientists, conservation organizations, the media, and the general public. Fisheries legislation regulating international fisheries markets has been amended to provide greater protection for this group along with other species of fish. However, little is known about these species, which reinforces the importance of studies in order to have a better understanding of the elasmobranch stocks, as well as to identify the influences of the anthropic action of fishing. In response to knowledge on the low sustainability of cartilaginous fish fisheries on a global scale, FAO has developed an international plan of action for the management and conservation of these fish, with the aim of developing and implementing national plans of action to ensure management and conservation of these stocks, having as main recommendation the collection of information about the Chondrichthyes, especially the sharks. Even so, this group is little known in terms of biodiversity, ecology, behavior, and a host of other characteristics relevant to this taxon, which is very worrying. Chondrichthyes - Multidisciplinary Approach attempts to portray to the readers up-to-date information on Chondrichthyes to promote an overview of the current taxon, serving as an indispensable source of access to more accurate and detailed information on shark rays and chimeras.
Chondrichthyes. --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Fishes --- Life Sciences --- Marine Biology --- Agricultural and Biological Sciences --- Ichthyology
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Skates have become a concern in recent years due to the preponderance of these elasmobranchs that are caught as bycatch or as a directed fishery. This has raised concern because skates have life history characteristics that may make them vulnerable to over-exploitation. It was due to this concern that prompted Drs. David Ebert and James Sulikowski to organize an international symposium on the "Biology of Skates". The aims and goals of the symposium were to bring together an international group of researchers to meet, discuss, perhaps develop collaborations, and present their most recent findings. The symposium was held over two days, on 13-14 July, 2006, in conjunction with the 22nd annual meeting of the American Elasmobranch Society in New Orleans, LA. A total of 31 authors from four countries contributed 16 papers that appear in this volume. The papers are broadly arranged into four separate categories: systematics and biogeography, diet and feeding ecology, reproductive biology, and age and growth. This is the first dedicated book on the biology of skates. We hope that readers will find this volume of interest and that it helps encourage and stimulate future research into these fascinating fishes.
Skates (Fishes) --- Chondrichthyes. --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Rajidae --- Physiology. --- Life sciences. --- Aquatic ecology. --- Wildlife. --- Fish. --- Life Sciences. --- Fish & Wildlife Biology & Management. --- Freshwater & Marine Ecology. --- Fishes --- Rajiformes
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