Botanyhttp://irgu.unigoa.ac.in/drs/handle/unigoa/182024-03-28T19:51:37Z2024-03-28T19:51:37ZEvaluating the carnivorous efficacy of Utricularia aurea (Lamiales: Lentibulariaceae) on the larval stages of Anopheles stephensi, Culex quinquefasciatus, and Aedes aegypti (Diptera: Culicidae)Mohanty, A.K.Govekar, A.de Souza1, C.Mohapatra, A.Janarthanam, M.K.Vukanti, R.Montemarano, J.Nina, B.B.http://irgu.unigoa.ac.in/drs/handle/unigoa/72782024-03-27T09:02:07Z2024-01-01T00:00:00ZEvaluating the carnivorous efficacy of Utricularia aurea (Lamiales: Lentibulariaceae) on the larval stages of Anopheles stephensi, Culex quinquefasciatus, and Aedes aegypti (Diptera: Culicidae)
Mohanty, A.K.; Govekar, A.; de Souza1, C.; Mohapatra, A.; Janarthanam, M.K.; Vukanti, R.; Montemarano, J.; Nina, B.B.
The emergence of insecticide resistance in mosquitoes necessitates the exploration and validation of sustainable biological strategies for controlling mosquitoes in their natural habitats. We assessed the predatory effect of Utricularia aurea Lour (Lamiales: Lentibulariaceae), an aquatic carnivorous plant found in the Indian subcontinent, Japan, and Australia, on 4 instars of Anopheles stephensi Liston, Culex quinquefasciatus Say, and Aedes aegypti Linn (Diptera: Culicidae), in the laboratory and field settings. In the laboratory setting, predation of larvae by U. aurea was highest during the first hour when it predated 45 percent, 61 percent, and 58 percent of first instars of An. stephensi, Cx. quinquefasciatus, and, Ae. aegypti, respectively, and, within 12 h, U. aurea preyed upon approx. 95 percent of the first, second, and third instars of the 3 mosquito species, approx. 80 percent of the fourth instars of An. stephensi and Ae. aegypti, and approx. 60 percent of fourth instars of Cx. quinquefasciatus. The predatory effect of U. aurea varied with mosquito species and instar. Broadly, predation risk declined with the increase of the instar size. In the field setting, at the end of 16 days, U. aurea predated 76 percent and 71 percent of the immature An. stephensi and Ae. aegypti, respectively. Our findings suggest U. aurea can be utilized as a potential biocontrol agent for controlling mosquito larvae in natural habitats; however, the current claim warrants additional investigations in a variety of natural habitats.
2024-01-01T00:00:00ZBiosynthesis and characterization of AuNPs produced using Termitomyces heimii pelletsDabholkar, S.Kamat, N.M.http://irgu.unigoa.ac.in/drs/handle/unigoa/72442024-02-20T06:21:41Z2024-01-01T00:00:00ZBiosynthesis and characterization of AuNPs produced using Termitomyces heimii pellets
Dabholkar, S.; Kamat, N.M.
A green chemistry approach to the synthesis of AuNPs using the pelletized culture of Termitomyces heimii has been attempted. The treatment of pellets of Termitomyces heimii and chloroauric acid resulted in the formation of AuNPs. These were characterized using various techniques like UV-visible spectroscopy, X-ray diffraction studies (XRD), Energy-dispersive X-ray analysis (EDX), scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM), zeta potential, dynamic light scattering (DLS), Fourier Transform Infrared Spectrometry (FTIR), and Raman spectroscopy. The results showed the color change of the interaction mixture from light yellow to purple after 25 min. AuNPs showed max absorbance at 530 nm using a UV-visible spectrum, as evident in forming AuNPs. FTIR spectra revealed the presence of functional groups related to peptides, proteins, monosaccharides, and phenolic compounds, which reduced Gold ions. The EDX technique confirmed the formation of AuNPs. XRD results showed that AuNPs have a face-centered cubic (fcc) crystal. The TEM images showed a successful synthesis of triangular nano prisms to nearly spherical and hexagonal with different sizes ranging between 20 and 150 nm.
2024-01-01T00:00:00ZEffect of Temperature and Nutrients on Physiological Behavior in Fresh & Marine Water Nostoc Spp. : A Comparative StudyTiwari, Prabha Kumarihttp://irgu.unigoa.ac.in/drs/handle/unigoa/72392024-02-19T05:21:52Z2023-01-01T00:00:00ZEffect of Temperature and Nutrients on Physiological Behavior in Fresh & Marine Water Nostoc Spp. : A Comparative Study
Tiwari, Prabha Kumari
2023-01-01T00:00:00ZEffect of Salt Stress on Growth, Biochemical and Molecular Changes in Local Rice Plant (Oryza Sativa L.)Srivastava, Smitahttp://irgu.unigoa.ac.in/drs/handle/unigoa/72372024-02-10T07:10:59Z2023-01-01T00:00:00ZEffect of Salt Stress on Growth, Biochemical and Molecular Changes in Local Rice Plant (Oryza Sativa L.)
Srivastava, Smita
2023-01-01T00:00:00Z