Download or read book Size Distribution of Pink Shrimp, Penaeus Duorarum, and Fleet Concentrations on the Tortugas Fishing Grounds (Classic Reprint) written by Edwin S. Iversen and published by Forgotten Books. This book was released on 2016-08-02 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Size Distribution of Pink Shrimp, Penaeus Duorarum, and Fleet Concentrations on the Tortugas Fishing Grounds The principal purpose of this study was to investigate the relation between the size of shrimp and the depth of water where they occur. Fishermen's observa tions and research data suggested that pink shrimp on the Tortugas grounds in crease ih size as water depth increases, but details of this relationship were lack ing. A second purpose was to investigate the extent to which fishermen discard small shrimp. A wide range of sizes of shrimp are caught in the trawl nets. The smallest sizes are often thrown overboard with the unusable part of the catch, and the extent to which discarding is done is of importance to an understanding of the fishery. A third purpose was to study the distribution of fishing vessels on the grounds to determine whether effort was concentrated in certain areas, and whether seasons, weather. Occurrence of seaweed and jellyfish, or other factors influence the distribution of fishing. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.