Scientometric Profile of Fisheries Research in SAARC Countries

This paper provides a quantitative assessment of research output in SAARC countries in the domain of Fishery Science. The primary data for this study have been sourced from Scopus database for the period 1994 to 2021. The findings of the study highlight that a total of 1190 publications of different forms are available with 8820 citations with an average citation per year per document of 1.732 and annual growth of 4 articles per year in the 28 years window. The growth rate of publication is found to be highly consistent. A total of 4784 authors contributed their research items in the period of study and the number of multi-authored or collaborated works are found to be maximum (4750) and only 34 publications are found to be single-authored with a degree of collaboration of 0.99. India is the leading nation among the other SAARC nations with 75.97% of the publication (904 publications) and 8164 citations to those publications. Khan, MA is found to be the author with the highest number of publications (35) but Harikrishnan, R is the most influential author (highest g-index = 27) with 1100 total citations in 27 publications.Aquaculture Research is the journal with maximum publications (66). There exists a significant correlation between h-index and g-index in authors and journals.

Significance of Traditional and Advanced Morphometry to Fishery Science

Morphometric characters of fishes are measurable or metric characters. Morphometrics is a more or less interwoven set of large statistical procedures to analyze variability in the size and shape of organisms. Morphometrics and phylogenetics of a species are combined to utilize existing phylogeny which addresses hypotheses of shape change through evolutionary time. Morphometric differences among stocks of a species are recognized as important to evaluate population structure and form a basis to identify stocks. Advancements in morphometrics used powerful tools for testing and displaying differences in shape, isolated shape from size variation and identifying stocks of species with unique morphological characteristics enabling better management of the species. Traditional or standard morphometry has been improvised from time to time with advanced methods by technological advancements like geometric morphometrics, image analysis, principal component analysis, truss network analysis and multivariate analysis as well as many more to update knowledge and get more accurate information. These advanced methods have strengthened earlier technologies to improve upgrade fishery research throughout the globe. Doi: 10.28991/HEF-2020-01-03-05 Full Text: PDF

The unknown Baranov. Forty years of polemics over the formal theory of the life of fishes

The year 2018 marked the 100th anniversary of the publication of paper “On the question of the biological basis of fisheries” by F.I. Baranov considered a cornerstone paper of modern fishery science. Baranov formalized population dynamics by describing changes in population abundance using differential equations, introducing the concept of instantaneous fishing and natural mortality rates, and developing his catch equation, which is the foundation of most modern age-structured stock assessment models. Baranov was the first to show the effect of fishing on population structure based on theoretical grounds. At the time of its publication, Baranov’s paper did not receive much attention in Russia and was completely unknown to scientists in the West. The second publication (On the question of the dynamics of the fishing industry, 1925) received substantial criticism from many and sparked a furious debate between Baranov and his opponents that lasted for several decades. The history and content of those debates, expressed in multiple papers by Baranov, is still largely unknown. I describe the essence of arguments by Baranov and his opponents. The story of these scientific debates reveals how different philosophical concepts and dominant points of view evolved through time.

ON THE ROLE AND TASKS OF DOMESTIC FISHERY SCIENCE IN OCEANIC FISHERIES DEVELOPMENT

A role of Russian science is increasing along with domestic fisheries development in the world Ocean. One of the main tasks of researchers is to protect the interests of Russian fisheries on the international level. Such protection is based on living resources investigation and formulation of recommendations on their sustainable development, taking into account the international regulations’ and bilateral agreements’ demands.

RED KING CRAB IN THE COASTAL BARENTS SEA: A REVIEW OF MMBI STUDIES

In 1960th, red king crab was intentionally introduced into the Barents Sea. This species has formed a new self-sustaining population. In Russian waters, the commercial fishery of red king crab was started in 2004. Non-indigenous status and high commercial value of the crab have led to growing interest in the study of its biology and ecology. Red king crab has been intensively studied by specialists of Murmansk Marine Biological Institute to evaluate the role of this crab in local benthic communities and provide a theoretic basis and important applications for fishery science. New data on the population dynamics, symbiotic relationships, feeding and reproduction of red king crab have been obtained from long-term studies in coastal waters of the Barents Sea. Significant results of these studies are presented in this review.

A STUDY OF ACADEMIC FACULTY SATISFACTION OF ERESOURCES AND SERVICE IN UNIVERSITY AND FISHERY SCIENCE LIBRARIES

This is a study on electronic information and information seeking behaviour of Marine science faculty. This study is based on empirical data collected through questionnaire and from an online survey conducted between January 2010 to March 2010 at south Indian Marine science departments and Libraries. The goal of this study is to investigate how this faculty uses the e-resources in our institutional resources and also studied need and satisfaction levels of various information sources and to obtain insights into informationseeking behaviour, especially its similarities and differences compared with the informationlocating patterns used by their marine science and fishery College Libraries.

Histopathology of the Liver of Three-Spotted Gourami, Trichogaster Trichopterus, Exposed to Malachite Green, A Commonly Used Medicine in Aquaria

With the intensification of aquaculture and the heightened interest in ornamental fishes and fish keeping, use of medicaments has considerably increased. These agents are heavily bio accumulated by fish. In spite of this importance of drugs/therapeutic agents in fishery science, no serious attempt has been made to assess their effects on fishes, especially the histopathological changes brought about by them. Liver is the chief metabolic and detoxification organ in vertebrates and it is highly susceptible to metabolic disturbances and a variety of toxicants to which the animal is exposed. Results of controlled exposure of fishes in the laboratory to toxicants such as pesticides and related chemicals suggest that liver is the organ in which the highest residues of such toxicants accumulate and it is this organ that suffers the greatest damage and impairments following such episodes. The present study was, therefore, aimed at assessing the histopathological effects of therapeutic level of malachite green on the liver of a common aquarium fish, the three spotted (blue) gourami, Trichogaster trichopterus. The drug selected for the present study was malachite green, a chemical recommended for treatment of fishes against several infection, especially fungal infection of eggs. Malachite green is used at concentrations of 0.05-0.15 ppm in fish disease therapy. Healthy fishes of about 70.0±5 mm TL purchased from a local aquarist were used for the present study. Fish were exposed to malachite green for a period of 48 h in all-glass aquarium tanks. The exposure concentration of malachite green was 0.15 ppm. The procedures for histological studies were basically in accordance with the commonly practiced histological methods.