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The reproduction and development of sharks, skates, rays and ratfishes
This volume had its origin in a symposium on the Reproduction and Development of Cartilaginous Fishes that was held at the annual meetings of the American Elasmobranch Society and the American Society of Ichthyologists and Herpetologists in Charleston, South Carolina in 1990. The cartilaginous fishes, class Chondrichthyes, are a large and diverse group of fishes that include approximately 900 to 1100 living species of sharks, skates, rays and ratfishes. Throughout their history, which dates back at least 400 million years, they have been a successful major component of the marine ecosystem. The chondrichthyan fishes occupy a pivotal position in comparative and evolutionary studies of vertebr...
The Physiology of Developing Fish: Viviparity and Posthatching Juveniles
FROM THE PREFACE: Dramatic changes occur in the physiology of most animals during their development. Among the vertebrates, birds are entirely oviparous, live for variable periods in a cleidoic egg, and show fundamental alterations in excretion, nutrition, and respiration at the time of hatching. In contrast, the eutherian mammals are all viviparous, depend on the maternal circulation and a specialized placenta to provide food, exchange gases, and discharge wastes. The physiology of both mother and fetus is highly specialized during gestation and changes fundamentally at the time of birth. Fishes exemplify both the oviparous and the viviparous modes of development, with some examples that are intermediate between the two. In these two volumes, selected reviews of many, but not all, aspects of development are presented. The chapters in Part A relate to the physiology of eggs and larvae; those in Part B concern viviparity and the physiology of posthatching juvenile fishes.
Annual Report of the Secretary of State ...
1868-1909/10, 1915/16- include the Statistical report of the secretary of state in continuation of the Annual report of the commissioner of statistics.
Annual Report of the Secretary of State, to the Governor of the State of Ohio for the Year ...
Vols. for 1868- include the Statistical report of the Secretary of State in continuation of the Annual report of the Commissioner of Statistics.
Annual Statistical Report
1867/68- include the Statistical report of the Secretary of State in continuation of the Annual report of the Commissioners of Statistics.
