The major aim of this work is, to help clarify the interrelationships of catfishes, with major implications on the study of the general evolution of these fishes. A great part of this work, therefore, deals with a cladistic analysis of catfish higher-level phylogeny based on extensive morphological data, in which are included some terminal taxa not included in previous analyses, but principally a large number of characters traditionally excluded from those analyses, with particular attention being given to catfish morphology. This analysis gives particular importance to complex, integrated structures. It will be interest to students, ichthyologists and biologists working in evolution, taxonomy and phylogeny.
This study attributes the chronic economic distress of the valuable Pacific salmon industry not only to decline in catch but also to the economic problems of open access ocean fisheries. It analyzes salmon public management programs and proposes alternatives. This title was originally published in 1969.
Catfish wonders why he is different from his underwater friends. Discover the characteristics of catfish, sharks, and other fish in this fun song paired with beautiful illustrations. This paperback book comes with CD and online music access.