Effect of abiotic factors on the population dynamics of paddy earhead bug, Leptocorisa oratorius F

Khare, Vivek Kumar; Prakash, Ravi; Sneha,; Kunal, Gautam

doi:10.22271/j.ento.2020.v8.i6b.8315

Cited by 5 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, non-significant negative correlation with minimum temperature (r=-0.037) and maximum temperature (r=-0.207). The present findings are agreement with Khare et al [26] who reported that Relative humidity was only having positive impact on the Gundhi bug population whereas the rest of the weather parameters shown negative impacts on the Gundhi bug population. These finding also supported by Sharma et al [21] found that L. acuta population showed negative non-significant correlation with minimum temperature.…”

Section: Rice Gundhi Bug (L Acuta)supporting

confidence: 93%

Impact of Abiotic Factors on the Incidence of Insect Pests in Rice

Yadav

Singh

Verma

et al. 2023

IJECC

View full text Add to dashboard Cite

The investigation on impact of abiotic factors on incidence of insect pests in rice was carried out during Kharif 2021. The highest and lowest Rice Yellow Stem Borer incidence was recorded at vegetative stage in the form of dead heart at 31st Standard Meteorological Weeks (SMW) and 40th SMW and it was 16.48% and 1.10%, respectively, whereas at reproductive stage the highest and lowest incidence was recorded in the form of white ear at 42nd SMW and 41th SMW i.e., 18.12% and 16.75%, respectively. The highest Rice leaf folder incidence was recorded in 36th SMW (16.25%) and lowest in 44th SMW (1.31%). The highest and lowest Rice Gundhi bug mean population was recorded in 39th SMW (10.30 bugs/hill) and 44th SMW (1.31 bugs/hill). The highest and lowest Brown Plant Hopper (BPH) mean population was recorded in 38th SMW and 41st SMW and it was10.80 BPH/hill and 1.60 BPH/hill, respectively. The yellow stem borer showed significant positive correlation with relative humidity whereas, non-significant positive correlation with minimum temperature, maximum temperature, rainfall and sunshine. Rice leaf folder population showed significant positive correlation with minimum temperature and relative humidity. Whereas, positive and non-significant correlation with maximum temperature and rainfall. However, negative and non-significant correlation with sunshine. Gundhi bug showed a non-significant positive correlation with Relative humidity, Rainfall and sunshine. However, negative and non-significant correlation with minimum temperature and maximum temperature. BPH population showed significant positive correlation with minimum temperature and relative humidity, however positive and non-significant correlation with maximum temperature and rainfall. Whereas, negative and non-significant correlation with Sunshine.

show abstract

Section: Rice Gundhi Bug (L Acuta)supporting

confidence: 93%

Impact of Abiotic Factors on the Incidence of Insect Pests in Rice

Yadav

Singh

Verma

et al. 2023

IJECC

View full text Add to dashboard Cite

show abstract

“…The results of the present investigation were found to be similar with the findings of earlier researchers who observed the earhead bug population during reproductive phase of the crop [3,10]. During the reproductive phase, flowering can occur which favours the maximum population of gundhi bug coupled with high temperature and humidity [11].…”

Section: Occurrence Of L Oratorius During Ahu Season 2018 and 2019supporting

confidence: 92%

Impact of Climate Variables on Occurrence of Rice Earhead Bug, Leptocorisa oratorius (F.) (Hemiptera: Alydidae)

Das,

Rahman

et al. 2023

IJECC

View full text Add to dashboard Cite

Rice earhead bug, Leptocorisa oratorius (F.) (Hemiptera: Alydidae) is one of the major sucking pests of rice, causing significant yield losses worldwide. The population fluctuation and infestation of earhead bug is influenced by different meteorological parameters. A field experiment was conducted at the ICR (Instructional Cum Research) Farm, Assam Agricultural University, Jorhat with a view to study the occurrence of L. oratorius on rice crop during Ahu (Autumn rice) season, 2018 and 2019. The population of L. oratorius was first observed in the field during the month of May and attained its peak population (2.66 and 1.56 adult per hill) on second and third week of June in 2018 and 2019, respectively. The occurrence of L. oratorius was also correlated with the different climate variables viz., temperature, relative humidity, rainfall and bright sunshine hour (BSSH). The correlation analysis revealed no significant impact of climatic variables on the occurrence of L. oratorius population during 2018, while all the variables except rainfall showed significant correlation with the occurrence of L. oratorius population during 2019. In 2019, a significant best fit multiple regression model was developed for L. oratorius to predict their seasonal occurrence under agro-climatic condition of Jorhat, Assam. The per cent grain infestation was also recorded during 2018 and 2019, which was found to be 39.34 and 37.11 per cent, respectively.

show abstract

“…This shows that the HyperthyroidismQoL‐cat is sensitive to detect and quantify the effect of hyperthyroidism on the HRQoL of affected cats, and that the disease has a negative effect on the HRQoL. Interestingly, certain questions related to clinical signs of hyperthyroidism commonly described in the literature, such as diarrhea and changed affection toward the owner, 2 were among the 3 items with the lowest mean scores while questions from the domain “owner” (side effects, emotional burden) were among the 3 items with the highest mean scores. Although this might indicate that the questionnaire places a rather high value on the “owner” domain, which does not necessarily reflect the HRQoL of the cat, the owner's distress can have a substantial effect on therapy decisions, including the decision to euthanize, and should certainly be considered 32 .…”

Section: Discussionmentioning

confidence: 89%

“…Hyperthyroidism is the most common endocrine disease in middle‐aged to older cats 1 . Cats suffering from hyperthyroidism have an overproduction of thyroid hormones due to abnormal functional thyroid tissue 2 . As a result of excessive thyroid hormone levels, various clinical signs occur, including weight loss despite increased appetite, vomiting, hyperactivity, polyuria and polydipsia, diarrhea, susceptibility to respiratory distress and changes in coat quality 2 .…”

Section: Introductionmentioning

confidence: 99%

Development and validation of a questionnaire to assess health‐related quality‐of‐life in cats with hyperthyroidism

Blunschi,

Schofield,

Muthmann

et al. 2024

Veterinary Internal Medicne

View full text Add to dashboard Cite

BackgroundHealth‐related quality‐of‐life (HRQoL) assessment tools are becoming increasingly important for the assessment of diseases in veterinary medicine.ObjectivesTo develop a tool to assess the HRQoL of hyperthyroid cats and their owners.AnimalsCats with hyperthyroidism (n = 229) and without hyperthyroidism (n = 322).MethodsCross‐sectional study design. A preliminary list of 28 questions relating to the HRQoL of hyperthyroid cats and the influence their cat's disease might have on owners was created. Each question consisted of 2 subquestions: (1) “how often does the item apply”; (2) “how strongly does the item affect HRQoL.” The questionnaire was refined based on statistical analysis, including Mann‐Whitney‐U tests on each item, comparing the results from cats with and without hyperthyroidism. Internal consistency and reliability of the questions were measured by Cronbach's alpha (α). P < .05 was considered significant.ResultsOverall, 25/28 questions were retained within the final HRQoL tool, which had an excellent internal consistency (α = .92). The tool produced a score between 0 and 382 (lower scores meaning better HRQoL). The median HRQoL score was 87.5 (range, 2‐348) for cats with hyperthyroidism, and 27 (range, 0‐249) for cats without (P < .001), suggesting the HRQoL was poorer in hyperthyroid cats.Conclusions and Clinical ImportanceThis validated HRQoL tool is useful to reliably quantify the influence of hyperthyroidism on the quality‐of‐life of affected cats and their owners. In the future, it could be considered of assistance in the clinical assessment of cats with hyperthyroidism.

show abstract

Effect of abiotic factors on the population dynamics of paddy earhead bug, Leptocorisa oratorius F

Cited by 5 publications

References 7 publications

Impact of Abiotic Factors on the Incidence of Insect Pests in Rice

Impact of Abiotic Factors on the Incidence of Insect Pests in Rice

Impact of Climate Variables on Occurrence of Rice Earhead Bug, Leptocorisa oratorius (F.) (Hemiptera: Alydidae)

Development and validation of a questionnaire to assess health‐related quality‐of‐life in cats with hyperthyroidism

Contact Info

Product

Resources

About