I= BIOSYSTEMATICS AND DISTRIBUTION OF THE FRESHWATER FISHES OF PAKISTAN WITH SPECIAL REFERENCE TO THE SUBFAMILIES NOEMACHEILINAE AND SCHIZOTHORACINAE
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Title of Thesis
BIOSYSTEMATICS AND DISTRIBUTION OF THE FRESHWATER FISHES OF PAKISTAN WITH SPECIAL REFERENCE TO THE SUBFAMILIES NOEMACHEILINAE AND SCHIZOTHORACINAE

Author(s)
Muhammad Rafiq
Institute/University/Department Details
Department of Zoology/ University of Arid Agriculture Rawalpindi
Session
2007
Subject
Zoology
Number of Pages
219
Keywords (Extracted from title, table of contents and abstract of thesis)
freshwater fishes, noemacheilinae, schizothoracinae, freshwater systems, endemics, ichthyofauna, total dissolved solids, trout, fish fauna, tilapia, inland waters, ichthyo-diversity

Abstract
Sampling of 255 stations belonging to 44 reaches randomly distributed along the freshwater systems of Pakistan enlisted 190 fish species and of these 12 are additions to previously known ichthyo-diversity of the area. The area has a high proportion of endemics that comprised 43 species, (22.75 % of the total fish fauna). The taxonomic anomalies, especially with regard to sub-families Schizothoracinae and Noemacheilinae have been resolved based on cluster analysis of the morphometric characters using computer based Principal Component Analysis (PCA) and scatterplotting using the software MINITAB 14. The dendrogram, developed through degree of similarity between the compositions of the fish fauna at different reaches, was used to identify six ichthyo-ecological zones for the country. These zones are different in having different ecological conditions and also have geographic rationale. The relationship between the distributions of fish fauna determined by using CANOCO 4.5 computer software suggested that temperature, altitude, dissolved oxygen, turbidity, salinity and type of substratum are the main determinants of the species distribution of ichthyofauna of the area, while total dissolved solids (TDS), alkalinity, and conductivity have a relatively minor direct control. Exotic trout species do not appear to have immediate threat to the indigenous fish fauna while Tilapia species need special monitoring before it becomes a serious problem for local species.

Download Full Thesis
23810.87 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
1652.97 KB
2 1 Introduction 1
1591.06 KB
  1.1 Background 1
  1.2 Problem 7
  1.3 Objectives 13
3 2 Review Of Literature 15
2117.19 KB
  2.1 Fish Diversity 15
  2.2 Taxonomic Anomalies 16
  2.3 Ecology Of Inland Waters 21
4 3 Materials And Methods 32
3274.85 KB
  3.1 Study Area 32
  3.2 Sampling 38
  3.3 Fish Systematics 55
  3.4 Ecological Analysis 59
5 4 Results And Discussion 62
12402.93 KB
  4.1 Taxonomic Anomalies 62
  4.2 Ichthyo-Diversity 105
  4.3 Ishthyo-Ecological Zones 132
  4.4 Environmental Determinants 159
  4.5 Rare Species 184
  4.6 Future Implications 185
  4.7 Future Research Frontiers 188
6 5 Summary 189
3042.39 KB
  5.1 Literature Cited 191