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V. R. Parshad – 1st expert on this subject based on the ideXlab platform

  • agro ecological variations in food preference behaviour of Bandicota bengalensis in rice wheat cropping system
    Journal of research, 2002
    Co-Authors: H Kaur, V. R. Parshad


    Field evaluation of semolina baits of rice (RSO) and wheat (WSO), i.e., semolina like particles of size 0.000216–0.001 cu mm of rice (PR 106) or wheat (HD 2329), mixed with sugar and groundnut oil in ratio 93:5:2 and rodenticide baits (0.005% bromadiolone, 0.0375% coumatetralyl and 0.0025% difethialone) at different stages of wheat and rice crops revealed that bait preference of rodents was affected by the area. The rodents preferred to eat WSO plain bait and rodenticide baits prepared in this bait over their RSO alternative baits in rice and wheat fields at Mukatsar while they preferred RSO plain bait and rodenticide baits prepared in semolina bait of rice over their WSO alternative baits in rice and wheat fields at Ludhiana. Bandicota bangalensis was predominant rodent pest in both the locations. Thus, for effective control of B. bengalensis in different agro-ecological regions, different bait formulations are needed.

  • potential of three rodenticides to induce conditioned aversion to their baits in the indian mole rat Bandicota bengalensis
    Applied Animal Behaviour Science, 1995
    Co-Authors: V. R. Parshad, J K Kochar


    The Indian mole rat, Bandicota bengalensis, after ingestion of a sublethal (SLB) amount of zinc phosphide in bait, developed conditioned aversion (CA) toward its lethal bait (LB) for variable periods ranging from 7 to 474 days. The maximum period for which it retained memory of sublethal poisoning was 58 days. With successive exposures to LB the aversive response became stronger. Four out of 20 rats that developed CA with zinc phosphide showed individual variations in food preferences and susceptibility to LB. Ingestion of a SLB single dose of the anticoagulant rodenticides brodifacoum and bromadiolone did not prevent any rat ingesting lethal amounts, but did affect the consumption of LB of brodifacoum. Unlike other species of rodents, B. bengalensis readily returns to feed on the bait in which it ingested the poison.

  • responses of Bandicota bengalensis to below ground baiting in orchard
    Mammalia, 1994
    Co-Authors: C S Malhi, V. R. Parshad


    Dans des parcelles de vigne d’un verger serieusement infeste par Bandicota bengalensis, on a etudie les reponses des rongeurs a un appâtage souterrain, ainsi que leur association avec la flore et la faune. Le controle de B. bengalensis par appâtage en surface n’etait pas possible du fait de la presence de divers oiseaux, de predateurs et de l’abondance de la flore naturelle sur le sol du verger. L’appâtage souterrain a ete efficace pour developper l’acceptation par les rats d’un appât non empoisonne, dispose dans des boites sous la surface du sol a l’interieur de leur terrier. Cependant, les rats accepterent relativement mal de prendre un appât empoisonne de la meme facon

W G Breed – 2nd expert on this subject based on the ideXlab platform

  • co evolution of gametes of the greater bandicoot rat Bandicota indica a murine rodent from south east asia
    Acta Zoologica, 2014
    Co-Authors: Fiona Dorman, Christopher M Leigh, Priscilla Balsamo, W G Breed


    Dorman, F., Balsamo, P., Leigh, C. and Breed, W.G. 2013. Co-evolution of gametes of the Greater Bandicoot Rat, Bandicota indica – am uriner odentf rom South-East Asia. — Acta Zoologica (Stockholm) 00: 000–000. Most Old World mice and rats, subfamily Murinae, have a spermatozoon with an apical hook, a long tail and, as seen typically in eutherian mammals, a bilaterally flattened head. Dramatically different from this are the sperm of the Greater Bandicoot Rat, Bandicota indica. Here, we ask the question has the structure of the sperm head co-evolved with that of the egg coat, the zona pellucida? For this, we first summarise the morphological features of the spermatozoon of B. indica that may relate to zona pellucida penetration at the time of fertilisation, and we confirm that the sperm head is generally round, not bilaterally flattened, in profile and has a huge acrosome. We then show that the zona pellucida around oocytes in tertiary follicles also differs from that of the other murine rodents in being only about 4 lm thick and, as demonstrated by lectin staining, has an unusual abundance of alpha-L-fucose. These findings indicate that both the male and female gametes of this South-East Asian murine rodent are highly divergent in their structural organisation. One of the functional implications of this probably relates to sperm –zona interactions and the release of acrosomal enzymes that probably facilitate penetration by digestion of the zona matrix at the time of fertilisation.

  • variation in sperm morphology of a murine rodent from south east asia the greater bandicoot rat Bandicota indica
    Acta Zoologica, 2011
    Co-Authors: Jintamas Suwanjarat, Natthawut Thitipramote, Christopher M Leigh, W G Breed


    Thitipramote, N., Suwanjarat, J., Leigh, C. and Breed, W.G. 2011. Variation in sperm morphology of a murine rodent from South-East Asia: the Greater Bandicoot Rat, Bandicota indica.—Acta Zoologica (Stockholm) 92: 201–205.

    In most mammals the male gamete, the spermatozoon, has a fairly consistent, species-specific shape although in a few species some variability is evident. The present study set out to determine the extent of sperm variability in a population of a South-East Asian murine rodent, Bandicota indica, that was sampled during both the breeding and non-breeding periods. We found that, regardless of the time of year when the animals were obtained, males had sperm present in the cauda epididymides but a high degree of variability was always evident including the presence of some grossly abnormal forms. The abundance of abnormal sperm tended to be greater during the non-breeding period. These animals also have relatively small testes, thus the occurrence of the variable sperm populations is consistent with the hypothesis that depressed levels of intermale sperm competition result in a relaxation of the genetic control of male germ cell maturation during spermiogenesis and thus the production of polymorphic sperm populations.

  • unusual germ cell organization in the seminiferous epithelium of a murid rodent from southern asia the greater bandicoot rat Bandicota indica
    International Journal of Andrology, 2005
    Co-Authors: Christopher M Leigh, P Worawittayawong, Greg Cozens, E Peirce, B P Setchell, Prapee Sretarugsa, Arunasalam Dharmarajan, W G Breed



    In the greater bandicoot rat, Bandicota indica, of south-east Asia, nine cell associations were documented in the testicular seminiferous epithelium. In about 10% of the tubule cross sections two or more cell associations occurred and, furthermore, some of the generations of germ cells within the cell associations were sometimes either out of phase, or missing, in the tubule cross sections. These features, together with the fact that this species has a highly pleiomorphic sperm head shape, are somewhat reminiscent of those of the seminiferous epithelium in humans and some other primates but not of common laboratory rodents. This species could thus be a good model for investigating irregular patterns of spermatogenesis in naturally occurring wild species of rodent.

Shagun Jindal – 3rd expert on this subject based on the ideXlab platform

  • repellent action of two fungicides against the house rat rattus rattus and the indian mole rat Bandicota bengalensis
    International Biodeterioration & Biodegradation, 1993
    Co-Authors: V. R. Parshad, Manjit S Saini, Shagun Jindal


    Abstract The fungicides copper oxychloride and thiram (tetramethylthiuram disulphide) were evaluated as repellents against the house rat Rattus rattus and the Indian mole rat Bandicota bengalensis by exposure station and pen tests. Uniform spraying of 1·5 and 4·5% aqueous solutions of copper oxychloride and surface coating of the same concentrations of thiram in peanut oil on 9cm × 9cm × 23cm cardboard cartons was found to reduce significantly the number of visits to the cartons by R. rattus deprived of food for 12 h, but not B. bengalensis . Pen trials in which treated and untreated cartons were exposed to R. rattus for 30 days showed the potential of the fungicides for protecting the cartons and their contents, but under laboratory conditions complete protection was not evident.

  • multi choice food preference behaviour of the indian mole rat Bandicota bengalensis
    Behavioural Processes, 1991
    Co-Authors: V. R. Parshad, Shagun Jindal


    Abstract Multi-choice food preference behaviour of the Indian mole rat Bandicota bengalensis has been studied with 4 and 8 foods consisting of cereals and a pulse in rat pens which had floor area of 143 x 94 cm and 143 x 94 plus 220 x 82 cm, respectively, and separate food and nest boxes. Nine combinations of three texture forms of 4 foods and one combination of 8 foods were tested. Significant differences were observed in the daily consumption of different foods irrespective of the daily clock-wise rotation in the location of the foods. The number of available foods, their taste and textural qualities were found to influence the feeding responses of B. bengalensis . In multi-choice feeding tests with 4 foods, small sized and less harder grains as of rice and millet were eaten more than those of maize and gram, while the maize flour was more preferred than the flour forms of other grains. Compared to other foods in any combination, rice in its whole (W), cracked (C) and flour (F) forms was generally eaten more than the W and C forms of maize and gram and F form of gram and millet. However, the 8 foods were eaten in the following order of preference: millet (W) > millet (C) > jowar (C) > wheat (C) > rice parmal (C) > rice basmati (C) > gram (C) > maize (C). The mole rat appeared to establish a particular order of preference of foods on the first day of feeding, and that was maintained on subsequent days by daily exploration and sampling of all foods. The particular patterns of food preference, as established in combinations of 4 foods and 8 foods, were not influenced significantly by the changes in location of foods among similar and familiar feeding sites of the rats.