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CNAA / Theses / 2016 / June /

Ichthyofauna of the Gianh river basin from Vietnam


Author: Ho Anh Tuan
Degree:doctor of biology
Speciality: 03.00.18 - Hydrobiology, ichthyology
Year:2016
Scientific adviser: Dumitru Bulat
doctor, associate professor (docent)
Scientific consultant: Laurenţia Ungureanu
doctor habilitat, professor, Institute of Zoology
Institution: Institute of Zoology

Status

The thesis was presented on the 14 June, 2016
Approved by NCAA on the 5 July, 2016

Abstract

Adobe PDF document – 1.25 Mb / in romanian
Adobe PDF document – 1.01 Mb / in english

Thesis

CZU 574.5 (597) + 597 (597)

Adobe PDF document 9.78 Mb / in english
195 pages

Keywords

Vietnam ichthyofauna, taxonomic status, meristic character, metric character, invasive species, economically valuable species, sustainable valorification

Summary

Thesis structere: introduction, 4 chapters, conclusions and recommendations, 326 cited literature, 150 pages, 20 figures, 7 tables, 3 annexes (21 pages 193 figures). The obtained results have been published in 15 scientific works and 3 projects.

The domain of study: 165.03. Ichthyology.

Research purpose. Evaluation of the ichthyofaunistic diversity in the basin of river Gianh, and elaboration of recommendations for protection and durable use of fish resources.

Objectives. Inventory of fish fauna diversity in the basin of river Gianh from Vietnam; description of morphometric and meristic characters of the identified species; analysis of spatial repartition; identification of fish species with high economic value, of the invasive and rare alogens ones in the basin of river Gianh.

Novelty and scientific originality. For the first time there has been composed a complete list of fish species from the basin of river Gianh and there have been described the morphological characters of identified taxons. There have been analyzed peculiarities of spatial distribution of the fish species in the basin of river Gianh. The species have been systematized according to their economic value, origin, and national and international status of rarity. There have been identified 3 new species for research: Schistura kottelati Tuan et al., 2015; Carassioides phongnhaensis Tu & Tuan, 2003 and Cyprinus hieni Tu & Tuan, 2003.

The important scientific problem solved in the thesis consists in the actualization of ichthyofauna diversity and the peculiarities of distribution of fish species in the basin of river Gianh which led to the elaboration of scientific-practical recommendations for the conservation and rational use of fisheries.

Theoretical significance. The scientific information about the diversity of ichthyophauna in the basin of river Gianh and the National Park Phong Nha - Ke Bang was updated. There were identified and described 3 new fish species for science. There were analized the metric and meristic characters of the caught species. The information about the fish species has been systematized according to peculiarities of spatial distribution, economic value, and origin and rarity status designated by national and international Red List (IUCN).

Practical value of the work. The obtained results served as scientific basis for developing recommendations for the protection and sustainable use of fish resources in the basin of river Gianh.

Implementation of the results. The obtained results on the topic of the thesis were implemented in specialized institutions of Vietnam: Society of Hunters and Fishermen, Forestry Protection Department, Department of Science and Technology, and also in the teaching process at University Vinh from Vietnam and Moldova State University.

Summary


1. IMPACT OF ENVIRONMENT FACTORS ON DIVERSITY AND STRUCTURE OF ICHTHYOFAUNA IN CONTINENTAL AQUATIC ECOSYSTEMS
  • 1.1. Diversity of ichthyophauna and ecological peculiarities of fish species in different types of aquatic ecosystems
  • 1.2. The brief history of research in ichthyofauna of Vietnam
  • 1.3. The natural conditions of ichthyofauna in Gianh River Basin
  • 1.3.1. Geographical location
  • 1.3.2. Topographical features
  • 1.3.3. Climate features
  • 1.3.4. Hydrological characteristics
  • 1.4. Conclusion of chapter 1

2. MATERIAL AND METHODS
  • 2.1. Location of investigations
  • 2. 2. Study time
  • 2.3. Methods of collecting and processing specimens
  • 2.4. Classification morphology methodology
  • 2.5. Classification method
  • 2.6. Conclusion of chapter 2

3. TAXONOMIC DIVERSITY AND ECOLOGICAL PECULIARITIES OF FISH SPECIES IN GIANH RIVER BASIN
  • 3.1. Fish biodiversity in Gianh river basin
  • 3.2. The distribution of fish species in the Gianh river basin
  • 3.3. The rare and valuable economic fish species in Gianh river basin
  • 3.3.1. The rare fish species in Vietnam Red Animals and in the IUCN Red List
  • 3.3.2. Fish species having economic value
  • 3.3.3. Invasive species and species created a danger to humans
  • 3.4. Comparison of the composition of species in North Central of Vietnam basins and other acvatic ecosistems
  • 3.5. The causes of threats and proposals of conservation of fishery resources in Gianh river basin
  • 3.5.1. The causes of threats to biodiversity of fish in the study area
  • 3.5.2. The proposals for the protection and conservation of fish biodiversity in the study area
  • 3.6. Conclusion of chapter 3

4. DESCRIPTION OF BASIC MORPHOLOGICAL CHARACTERISTICS OF FISH SPECIES IN GIANH RIVER BASIN
  • 4.1. Description of basic characteristics of fish species
  • 4.2. Conclusion of chapter 4

CONCLUSIONS AND RECOMMENDATIONS