Yahya Bakhtiyar

Yahya Bakhtiyar
University of Kashmir · Department of Zoology

Ph.D. in Zoology
Population dynamics, macrozoobenthos, annelids, forage fishes, reproductive biology

About

51
Publications
14,041
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144
Citations
Introduction
Completed my Ph.D. in 2008 with highlights as follows: 1. Nutritional requirements of fresh water prawn of Jammu region. 2. Development of low cost formula feeds for Macrobrachium dayanum. 3. Food preferences of Macrobrachium dayanum (Henderson) and Labeo rohita (Hamilton). 4. Nutritional status and culture of food organisms. 5. Mono and poly culture of Macrobrachium rosenbergii and Indian major carps. 6. Proximate composition of various Fish, prawns and natural and artificial food ingredients. 7. Currently my focus area of research is Fish Population studies, species diversity, management and conservation aspects.
Additional affiliations
August 2008 - June 2013
Department of Education,Government of Jammu and Kashmir
Position
  • Lecturer
August 2007 - August 2008
University of Jammu
Position
  • Senior Researcher
December 2003 - December 2005
University of Jammu
Position
  • Researcher

Publications

Publications (51)
Article
Full-text available
The effect of locally available low cost ingredients such as silk worm pupae (SWP), soyabean meal (SBM), earth worm meal (EWM) as a replacement of fish meal (FM) on growth, survival and biochemical composition, were investigated for Macrobrachium dayanum (0.50 g). A significantly higher rate of growth, survival and food conversion ratio (FCR) were...
Article
Full-text available
The present study describes the seasonal fluctuation in the proximate body composition of different size groups of Macrobrachium dayanum and among the sexes MdbI (Size 6.0-20.0 mm), MdbII (Size 21.0-40.0 mm), MdbIII, (Size 41.0-60.0 mm Male) and MdbIV (Size 41.0-60.0 mm Female). The results revealed that average moisture and protein content in musc...
Article
Full-text available
The controlled breeding program of Schizothorax labiatus requires in-depth knowledge of its reproductive features, which were studied for 2 years (October 2017 to September 2019). The study revealed four maturity phases in S. labiatus differing morphologically as well as histologically. Overall gonadosomatic index (GSI) followed the same trend in b...
Article
Full-text available
The deteriorating conditions in stream ecosystems are detrimental for society as far as its health, and development is concerned if the underlying factors continue to operate without regular monitoring. In order to maintain the health of a stream ecosystem, assessment of spatiotemporal changes in its physicochemical attributes and identification of...
Article
Full-text available
Abstract: This paper presents the spatal and temporal variaton in the diversity of malacofauna in relaton to the water chemistry of the Aripal stream of Kashmir Himalaya. A total of 12 species were reported which belong to four families, Lymnaeidae, Physidae, Planorbidae, and Bithyniidae from class Gastropoda, and two families, Cyrenidae and Pisi...
Article
Full-text available
The present study reflects the seasonal variation of macrobenthic invertebrates from Aripal and Watalara streams in Kashmir Himalaya. During the study, a significant difference (p<0.05) was observed in the density of Annelida, Mollusca, and Arthropoda on a seasonal scale. Macrobenthic invertebrates were found to be at their highest density during s...
Article
Full-text available
The indigenous Schizothorax spp. in the valley of Kashmir are facing constant threats and decline in their overall population. The current aim was to analyse the comparative length-weight relationship (LWRs) and condition factor (K) of 350 specimens belonging to four Schizothorax spp. (S. plagiostomus, S. esocinus, S. labiatus and S. curvifrons) fr...
Chapter
Full-text available
Water pollution is a menace to fish and has been attracting more attention in recent years because of inferential proof that some diseases in fishes are correlated with human-induced factors. Bacteria are ubiquitous and cause various diseases that can lead to massive death rates in fishes, both captive and wild. Fish diseases are currently a major...
Chapter
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Benthic macroinvertebrates are the potential bioindicators of water quality as they provide the clear picture of past and present health conditions of aquatic bodies. The ubiquitous distribution, life cycle of considerable duration, high accumulating capacity and sedentary nature of benthic macroinvertebrates, make them a great tool in assessing th...
Article
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AbstractThe common carp Cyprinus carpiois a well-known invasive species. A total of472 specimens of C. carpio(8.6–35 cm,10.5–1000 g) were collectedfrom Manasbal Lake of Kashmir Himalayafor this studybetween March 2018 andFebruary 2020. Astrong correlation between the respective parameters of length-length and length-weight with rand R2values approa...
Article
Full-text available
Zooplankton are the precious elements of aquatic ecosphere playing a significant role in some ecological phenomena viz., biomonitoring, ecological indication, link between primary producers and higher trophic levels, aquaculture,and maintenance of balance in aquatic food webs.The climate,being a dynamic abiotic entity, changed many times during the...
Article
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Morphometric and meristic characters are very important for the identification of any fish specimen. The present study aims to describe the morphometric and meristic characters of the indigenous fish Crossocheilus diplochilus (Heckel) from Dal Lake. This fish is commonly known as Kashmir latia and is called tether locally. In the present study, the...
Chapter
Full-text available
Plastic pollution is the buildup of unwanted plastic products in the environment by its abundant and limit-less use by a greedy human population in various ways. Plastics are usually made of chains of monomer units of ethylene and propylene linked together. Plastics are durable and resistant to degradation and tend to accumulate where they are disp...
Chapter
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The ecosystem services provided by freshwater zooplankton community (viz., rotifera, cladocera, copepoda and ostracoda) are very much significant and valuable. By feeding on phytoplankton or other members of zooplankton species, they act as primary consumers or secondary consumers, and hence playing a vital role in maintaining the biological config...
Article
The morphometric analysis was carried out in indigenous cyprinid food fish, Schizothorax labiatus (a species of snow trout) collected from Vishav stream, a perennial cold water stream of Kashmir valley, India, wherein various morphometric characters viz., Total Length (TL), Standard Length (SL), Fork Length (FL), Pre-dorsal Length (PDL), Pre-pector...
Article
Full-text available
The morphometric analysis was carried out in indigenous cyprinid food fish, Schizothorax labiatus (a species of snow trout) collected from Vishav stream, a perennial cold water stream of Kashmir valley, India, wherein various morphometric characters viz., Total Length (TL), Standard Length (SL), Fork Length (FL), Pre-dorsal Length (PDL), Pre-pector...
Article
Full-text available
The study was conducted to assess the growth and survival of Macrobrachium rosenbergii in earthen culture ponds in order to know about the growth potential of M. rosenbergii in mono as well as polyculture conditions in Jammu. Polyculture experiments of prawn with some selected carps Indian Major Carps (Cirrhinus mrigala and Labeo rohita) and Exotic...
Book
Full-text available
The book is a compilation of various research papers from different fields of Zoology
Chapter
Full-text available
Climate change is predicted to affect any individual organism during all life stages, thereby affecting population of specie, communities and the functioning of ecosystems. The effects of climate change can be direct, through changes in different physical phenomena and associated phonologies, or mostly indirect and mediated through direct effects o...
Article
Full-text available
Among the Schizothoracine family of class pisces commonly known as snow trouts, the Schizothorax labiatus is economically a valuable food fish possessing a wide market demand. The length-weight relationship, morphometrics and condition factor (K) in S. labiatus were investigated on the samples collected during late autumn and winter months from Vis...
Article
Full-text available
Abstract The present study was carried out to study the feeding habits of Labeo rohita from culture ponds of Gho-Manhasa fish farm, Jammu. Monthly samples were collected from the ponds to study the gut contents. In case of L. rohita in LrfI (lowest size group) and LrfII, LrfIII 40 guts/group, LrfIV 50 guts (due to non-availability of the size cat...
Article
Full-text available
The work was carried out for a period of one year to study the proximate body composition of Labeo rohita which were collected from Gho-Manhasa fish farm because of easy access and availability in abundance throughout the year. The specimens were divided into four groups on the basis of their size and sex viz., LrbI (Size 20.0 mm-100.0 mm); LrbII (...
Poster
The freshwater prawn, Macrobrachium dayanum was collected for a period of one year from Gho-Manhasa stream, Jammu to investigate the seasonal variation in the proximate composition/nutritional status of the animal. Marked seasonal variation in protein, lipid and moisture were observed during a period of one year wherein the protein content in case...
Article
Full-text available
Abstract The present study was carried out to evaluate the effect of initial starvation and subsequent refeeding or delayed initial feeding on the survival of newly hatched larvae of Macrobrachium dayanum under laboratory conditions. In the delayed initial feeding experiments, the feeding rate of the starved newly hatched larvae of M. dayanum incre...
Article
Full-text available
Abstract The aim of the present study was to work out the natural food and feeding habits of Macrobrachium dayanum in Gho-Manhasa Stream Jammu. Samples were collected monthly between January 2004 and December 2004. A total of 480 specimens of Macrobrachium dayanum (M. dayanum) were analysed by categorizing them into four categories based on size an...
Article
Full-text available
The freshwater crab, Paratelphusa masoniana was collected for a period of one year to investigate the seasonal fluctuation in the proximate composition. Marked seasonal variation in protein, lipid and moisture were observed during a period of one year to determine their viability in the course of the reproductive cycle. Both protein and lipid conte...
Article
Full-text available
The Macrobrachium dayanum, a locally available freshwater prawn of Jammu was sampled regularly for a period of one year to analyze the seasonal variation in the lipid contents of muscles, hepatopancreas and ovary. Remarkable variation in the lipid content in different tissues of M. dayanum has been analyzed during the study period. Changes in the l...
Article
Full-text available
This investigation was carried out to study the effect of different live feed and dry feed on growth and survival of Labeo rohita at a stocking density of 20 larvae per trough having 10 L of water. The increase in weights and lengths were used as measures of growth. The duration of the experiment was 30 days. Seven dietary treatments were tested vi...
Article
Full-text available
This investigation was carried out to study the effect of different live feed and dry feed on growth and survival of Labeo rohita at a stocking density of 20 larvae per trough having 10 L of water. The increase in weights and lengths were used as measures of growth. The duration of the experiment was 30 days. Seven dietary treatments were tested vi...
Article
Full-text available
The present observation based on gut content analysis revealed detritiherbivore nature of Macrobrachium dayanum (Henderson). The major components present in the gut were Detritus > Sand particles > Algae > Diatoms > Macrophytes > Animal matter. Frequency of empty stomachs however, was more in young as compared to adults, indicating a relationship b...
Article
Full-text available
To study the effect of different stocking densities on the growth and survival of the freshwater prawn the post larvae with mean weight of 0.114g were stocked at 5, 10, 15, and 20 prawns/m 2 and cultured for a period of 49 days (7-weeks) under laboratory conditions. Prawns were fed artificial diet with 8% of wet body weight twice a day. Water excha...
Article
Full-text available
The present investigation was carried out to study the effect of different live feed and dry feed on growth and survival of M. dayanum. The studies were conducted indoor in the plastic water troughs containing newly hatched larvae of Macrobrachium dayanum (hatched in laboratory from the brooders collected from Gho-Manhasa stream) were stocked at a...
Article
Full-text available
Eight morphometric characters of Macrobrachium dayanum (Henderson), a freshwater prawn were measured from 6 males and 6 females collected monthly for a period of one year (January 2007-December 2007) from three sites viz. Gho-Manhasan, Kheri and Nagri. Morphometric description of the species, M.dayanum included the parameters viz. length of specime...
Article
Full-text available
Larvae of Macrobrachium rosenbergii (PL) were procured from CIFE, Mumbai and transported to the Department of Zoology, University of Jammu for experimental purposes. Four different diets viz., Diet I (Mixed Zooplanktons), Diet II (Live Chironomus), Diet III (freeze dried Tubifex) and Diet IV (Artificial Feed) were fed to the post larvae of Macrobra...
Article
Full-text available
Studies on the morphometry of Macrobrachium dayanum (Decapoda, Palaemonidae) Seema Langer, Archana Kumari, Yahya Bakhtiyar and Anshu Samyal Department of Zoology, University of Jammu, Jammu - 180 001 (India).February 17, 2009 Received on : February 17, 2009 ABSTRACT Eight morphometric characters of Macrobrachium dayanum (Henderson), a freshwat...
Article
Full-text available
The occurrence of male of Daphnia similis, a Cladoceran crustacean was recorded from the sub-tropical region of Jammu, India and described for the first time thus completing the description of the species. Key words: Daphinia similis, Cladoceran crustacean, Jammu.
Article
Full-text available
While studying the reproductive behavior during the different seasons of a year, the different developmental stages of cocytes in the ovary of M. dayanum (Hend.), a locally available freshwater prawn, have been recognized as: Stage 1: Oogonia, Stage 2: Previtellogenic oocytes, Stage 3: Vitellogenic oocytes, Stage 4: Mature oocytes. Gonadosomatic in...
Article
Full-text available
Studies on ovarian development of macrobrachium dayanum (Hend.) in relation to gonadosomatic index and hepatosomatic index Seema Langer*, Anshu Samyal and Yahya Bakhtiyar Department of Zoology, University of Jammu, Jammu - 180 006 (India) Received on : March 19, 2008 ABSTRACT While studying the reproductive behavior during the different season...
Article
Full-text available
ABSTRACT Study of a water body at Jammu was carried out for a period of one year from January 2004 to December 2004 to observe various water quality parameters and zooplankton dynamics. Temperature, Dissolved oxygen, Free Co2 , Carbonates, Bicarbonates, Calcium, Magnesium and Chlorides were estimated on monthly basis. A total of 12 zooplankton spec...

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Questions (5)
Question
What needs to be done if you find your decade ago published paper again published in a new/fake journal?
Question
if there is any link for identification manual
.
Question
Multiparameter analysis equipment which can analyze nitrite nitrate calcium magnesium phosphorus
Question
Population dynamics and age structure of fishes in a lake.

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