An experiment was conducted during Rabi 2008-2009 and 2009-2010. Aphid appeared in first week of January when the maximum temperature was (15.8-16.1 0 C) and minimum temperature (5.3-8.0 0 C) along with relative humidity 93.0-95.3 per cent maximum, 66.0-82.9 per cent minimum and wind speed 2.6 km/h during 2008-09 and 2009-10, respectively. The peak intensity of aphids on different varieties of Indian mustard during 7 th standard week (Feb., 12-18) in respective years, when the temperature was 23.1-25.1 0 C maximum and 9.4-12.5 0 C minimum along with relative humidity maximum 89.0-91.0 per cent and minimum 43.0-69.0 per cent during 2008-09 and 2009-10, respectively. The aphid population was completely wiped out from mustard crop in the last week of February and first week of March, when the crop age was 118 days. At this stage, temperature was 29.7-31.7 0 C maximum and 12.7-15.7 0 C minimum along with relative humidity maximum 73.0-78.0 per cent and minimum 34.0-36.0 per cent during 2008-09 and 2009-10, respectively. Simple correlation coefficient of aphid with weather factors showed a positive relationship with temperature (r=0.226-0.645 and 0.900-0.961) and wind speed (r=0.434-0.651 and 0.599-0.684), while negative impact with relative humidity (r=-0.579 to-0.765 and-0.526 to-0.633) during both the years. How to view point the article : Chandra, Awaneesh, Malik, Y.P. and Kumar, Anoop (2019). Population dynamics of mustard aphid Lipaphis erysimi Kalt. on different varieties of Indian mustard and their relationship with prevailing weather parameters.
PurposeInformation on thyroid functions in populations consuming potent antithyroidal bamboo-shoots (BS) was found scanty. Therefore, to assess thyroid function in BS consuming children was found relevant.MethodsThis cross-sectional study included 127 children from 3 villages. Thyroid volume (TV), free thyroxine (FT4), free triiodothyronine (FT3), thyroid stimulating hormone (TSH), thyroglobulin antibody (Tg-Ab), thyroid peroxidase antibody (TPO-Ab), urinary iodine (UI), urinary thiocyanate (USCN), salt iodine (SI), water iodine (WI), and BS consumption pattern were assessed. ResultsVariable-wise overall mean±SDs/medians/interquartile ranges (IQR) were - age: 8.69±1.69/8.77/7.22-9.74 y, TVol: 0.82±0.27/0.82/0.67-0.96 ml, FT4: 19.5+5.6/20.1/16.9-22.0 pmol/L, FT3: 4.27+1.24/4.22/3.35-4.96 pmol/L, TSH: 2.44+1.39/2.33/1.60-3.15 mIU/L, Tg-Ab: 15.2+10.0/12.5/11.1-14.5 IU/ml, TPO-Ab: 5.58+12.25/3.89/2.90-5.11 IU/ml, UI: 117.4±58.5/108/73-160.5 µg/L, USCN: 0.99+0.67/0.8/0.5-1.2 mg/dl, WI: 4 .69±4.56/3.0/1.35–7µg/L, and BS consumption: 153.8±01.4/119/71.4–214.3 g/person/day respectively. Only 80.3% salt samples had ≥15 ppm iodine. Thyroid dysfunction prevalence was 6.3%. There were positive correlations between TV and FT4 (r=0.2466, p=0.005), UI and TSH (r=0.2633, p=0.003), TSH and FT4 (r=0.2135, p=0.016), TSH and FT3 (r=0.1898, p=0.033), USCN and FT4 (r=0.2477, p=0.005), Tg-Ab and TPO-Ab (r=0.3768, p=<0.001), and negative correlations between Tg-Ab and TSH (r=-0.2024, p=0.023), Tg-Ab and FT4 (r=-0.1869, p=0.035). In boys, USCN had a positive correlation with TPO-Ab (r=0.3069, p=0.018). The village having highest levels of BS consumption (p=0.037) and median UI showed higher TSH levels (p=0.037) and higher FT3 level (p=0.001) compared to the village of lowest BS consumption.ConclusionsThe BS consuming children appear at risk of developing hypothyroidism by Tg-Ab, which may partly be diminished by reducing BS consumption.
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