Papers by Rinkesh wanjari
Journal of Asia-Pacific biodiversity, Apr 1, 2024
Ocean & coastal management, May 1, 2024
National Academy Science letters, Jan 28, 2024
This study examines skeletal deformities in Labeo catla (Hamilton, 1822) (Teleostei: Cyprinidae) ... more This study examines skeletal deformities in Labeo catla (Hamilton, 1822) (Teleostei: Cyprinidae) collected from Wainganga River near Pauni city, District Bhandara, Maharashtra. Morphological features of abnormal fish specimens were compared with those of normal fish from the same location. While no marked differences were observed in meristic characters, minor changes were noted in morphometric characters, particularly in the caudal peduncle region. Specifically, the distance between the postanal fin and the base of the caudal peduncle was shorter in the abnormal specimen (15.4 mm, 4.78% of standard length) compared to the normal specimen (48.37 mm, 11.80% of standard length). Radiographic examinations were conducted to further analyze the deformities. Potential factors contributing to the deformities include insufficient essential nutrients, variations in water quality or chemical contaminants, and genetic mutations during larval development. The study discusses these potential causes and emphasizes the importance of such research in environmental monitoring. This study presents the first documented report of skeletal abnormalities in Labeo catla from the Wainganga River in Maharashtra, India.
Pollution research, 2024
The use of antibiotics in the aquaculture leads to antibiotic-resistant aquatic pathogens. Plantd... more The use of antibiotics in the aquaculture leads to antibiotic-resistant aquatic pathogens. Plantderived medications are gaining attraction due to their perceived safety and efficacy. Medicinal plants show promise in combatting infections and minimizing adverse effects. Aquatic weeds produce compounds effective against bacterial pathogens. India utilizes traditional medicinal plants, and seaweed exploration offers potential for therapeutic drug development. Extracting active compounds from aquatic plants can uncover their antimicrobial potential. The study aims to evaluate antimicrobial potential in Myriophyllum spicatum extracts against fish bacterial pathogens, using various solvents. Methanolic extract exhibits the highest antibacterial activity, emphasizing the effect of various solvents against different fish diseases. Natural hydrophytic plant extracts are gaining interest as antimicrobials to combat foodborne diseases and reduce reliance on synthetic drugs. Myriophyllum spicatum exhibits potential as a natural remedy for aquaculture infectious diseases, showing promise against a spectrum of bacteria and aquaculturerelated pathogens.
National Academy Science Letters, 2024
This study examines skeletal deformities in Labeo catla (Hamilton, 1822) (Teleostei: Cyprinidae) ... more This study examines skeletal deformities in Labeo catla (Hamilton, 1822) (Teleostei: Cyprinidae) collected from Wainganga River near Pauni city, District Bhandara, Maharashtra. Morphological features of abnormal fish specimens were compared with those of normal fish from the same location. While no marked differences were observed in meristic characters, minor changes were noted in morphometric characters, particularly in the caudal peduncle region. Specifically, the distance between the postanal fin and the base of the caudal peduncle was shorter in the abnormal specimen (15.4 mm, 4.78% of standard length) compared to the normal specimen (48.37 mm, 11.80% of standard length). Radiographic examinations were conducted to further analyze the deformities. Potential factors contributing to the deformities include insufficient essential nutrients, variations in water quality or chemical contaminants, and genetic mutations during larval development. The study discusses these potential causes and emphasizes the importance of such research in environmental monitoring. This study presents the first documented report of skeletal abnormalities in Labeo catla from the Wainganga River in Maharashtra, India.
Ocean and Coastal Management, 2024
The Mumbai metropolitan region has undergone rapid urbanization and economic expansion in recent ... more The Mumbai metropolitan region has undergone rapid urbanization and economic expansion in recent years. Ensuring the sustainability of artisanal fishers’ livelihoods and safeguarding coastal ecosystems poses a significant challenge to the city’s overall sustainability. This study examines the ecological structure to ascertain how anthropogenic stressors affect ecological functioning of Mumbai coastal waters (MCW). Ecopath with Ecosim (version 6.6.8) was employed to construct a mass-balanced trophic model for the MCW. This model delineated 20 distinct groups, including seven types of Teleost fishes, eight Invertebrate groups, Elasmobranchs (cartilaginous fish), Birds, Zooplankton, Phytoplankton, and Detritus. At trophic hierarchy’s base were detritus and primary producers (trophic level = 1), while highest trophic level was occupied by Elasmobranchs (trophic level = 4.40). Energy transfer efficiency within the ecosystem varied significantly across different categories. Ecotrophic efficiency ranged from 0.062 for detritus to 0.997 for filter feeders, with consumer groups often surpassing 0.80. Both primary producers and detritus exhibited average transfer efficiencies of 31.76% and 33.56%, respectively. A combination of indicators collectively indicated that the MCW ecosystem was in an early and immature stage of development. These indicators encompassed net system production (2735.077 t km-2 y-1), ratio of total primary production to total biomass (26.88), ratio of total biomass to total system throughput (0.013), recycling index (Finn’s cycling index = 1.23%), the system’s omnivory index (0.47), and the connectance index (0.342%). Moreover, the ascendancy (36.06%) and overhead (67.94%) results indicated the ecosystem’s stability and resilience against disturbances. Total eco-exergy was calculated at 45645.1 g m-2, with a specific eco-exergy of 100.3 g m-2. These indices offer valuable insights into the energy and structure of the ecosystem. This study emphasizes the need for diverse ecological and fishery regulations. Additionally, it stresses the importance of fostering conversations around strategic conservation planning and building the capacity to execute these plans effectively.
Arabian Journal of Geosciences
Journal of the Marine Biological Association of India, Dec 16, 2022
Biotica Research Today, Jul 20, 2021
journal of indian fisheries association, 2019
For the irst time, a study was carried out on the length-weight relationship of the Metapenaeus b... more For the irst time, a study was carried out on the length-weight relationship of the Metapenaeus brevicornis (Milne-Edwards, 1837) from the central-eastern Arabian Sea. The study was based on fortnightly experimental trawl ishing from August 2019 to November 2019. A total of 336 shrimp's samples were measured. The length ranged between 5.21 and 10.19 cm while weight ranged between 9.9 and 22.0 gm. The results revealed a negative allometric growth pattern (mean "b" = 2.41 for pooled data). The correlation coef icient of total length with the body weight of shrimps was found to be high (r)=0.94 2 and r =0.8831.
The Journal of Basic and Applied Zoology
Background The present study was performed to determine carapace length–body weight relationship ... more Background The present study was performed to determine carapace length–body weight relationship of Charybdis callianassa. In fisheries biology, length–weight relationships are important as they allow for the calculation, by creating a mathematical equation between the two, of the total weight of the fish in a particular group in fish. Such information is helpful for fishery scientists to research the dynamics of development and populations and for public agencies that can maintain and preserve these resources sustainably. Results A study on the carapace length–body weight relationship of Charybdis callianassa (Herbst, 1789) was made on the northwest coast of India for the first time. The study was based on experimental trawl fishing conducted fortnightly from August 2019 to March 2020. A total of 479 specimens, including 262 males and 217 females from fishing trawler, were examined for their carapace length and total weight. The carapace length ranged from 2.69 to 3.54 cm, and the ...
The Journal of Basic and Applied Zoology, 2021
Background: The present study was performed to determine carapace length-body weight relationship... more Background: The present study was performed to determine carapace length-body weight relationship of Charybdis callianassa. In fisheries biology, length-weight relationships are important as they allow for the calculation, by creating a mathematical equation between the two, of the total weight of the fish in a particular group in fish. Such information is helpful for fishery scientists to research the dynamics of development and populations and for public agencies that can maintain and preserve these resources sustainably. Results: A study on the carapace length-body weight relationship of Charybdis callianassa (Herbst, 1789) was made on the northwest coast of India for the first time. The study was based on experimental trawl fishing conducted fortnightly from August 2019 to March 2020. A total of 479 specimens, including 262 males and 217 females from fishing trawler, were examined for their carapace length and total weight. The carapace length ranged from 2.69 to 3.54 cm, and the total weight from 5.26 to 7.36 g. This analysis revealed that the crabs exhibited negative allometric development, as shown by average exponents 'b' = 2.71 for pooled data with high coefficient (r) = 0.91 and r 2 = 0.83. Conclusions: The carapace length-body weight relationship of Charybdis callianassa in relation to sex and carapace was studied in the Mumbai coastal water, India. We found major differences in the average "r 2 " values of species reported for males (0.89), females (0.79) and pooled data (0.83). Such kind of study is essential for fisheries biology to comprehend the differences in circumstances in small and large specimens that vary with environmental conditions and seasons.
Uploads
Papers by Rinkesh wanjari