Checklist of Odonata (Insecta) of Doon Valley, Uttarakhand, India

In this communication, we have collated a checklist of 97 species of odonates from Doon valley, Uttarakhand by reviewing the literature. These species are distributed across 13 families, 58 genera, and eight superfamilies. Of these species, 60 were Anisoptera (dragonflies) and 37 were Zygoptera (damselflies). Three species of dragonflies and two damselflies are endemic to India. This checklist updates existing knowledge on insect diversity in the Doon valley and will aid conservation management of wetlands in the region.

Doonstruck Diaries of Victorian Memsahibs: Between the Journal and Jhampaun in Mussoorie and Landour

Established as colonial hill stations in Indian's Doon Valley, in the 1820s, Mussoorie and Landour emerged in Victorian literary imagination with the journals of Emily Eden, Fanny Parks, and the Wallace-Dunlop sisters. This paper argues that the Doon's female imperial architextures invented new prospects of grafting Anglo-Saxon aesthetics on the Himalayan terra nullius, diminishing, miniaturizing, and depopulating aspects of the hazardous, the alien, and the local. A thread of archetypes —jhampauns (Himalayan loco-armchairs) and Himalayan vistas— link the aesthetic arcs in the journals of Eden, Parks, and the Wallace-Dunlops. Although the architexture was ostensibly apolitical, it imbued the Doon's representational spaces with a reproducible English character, rendering its terra incognita into terra familiaris in imperial psyche, while carving a distinct imperial subjectivity for Memsahibs.

Evaluation of background radiation level and excess lifetime cancer risk in Doon valley, Garhwal Himalaya

Radionuclides such as Ra-226, Th-232 & K-40 occurs naturally in the earth crust from its creation and are main contributor to the dose received by human beings. The present study was carried-out in the Doon valley which is outlined in the Main Boundary Thrust (MBT) region of Garhwal Himalaya in Uttarakhand, India. The collected soil/rock samples were analyzed by NaI(Tl) Gamma ray spectrometry for the analysis of radionuclides and hence measuring the various health hazard indices and Excess lifetime cancer risk. Radionuclide (226Ra, 232Th & 40K) content were found to vary from 47 ± 9 to 442 ± 50 Bq Kg−1, 45 ± 17 to 101 ± 16 Bq Kg−1 & 320 ± 281 to 947 ± 197 Bq Kg−1 respectively and were higher than the world average values which are 35 Bq Kg−1, 30 Bq Kg−1 and 400 Bq Kg−1 respectively. Higher radionuclide content contributes to higher amount of absorbed doses which was found to vary from 93 to 259.6 ηGyh−1 with a mean value of 112.5 ηGyh−1 and Gamma index which found to vary from 0.73 to 1.92 with a mean value of 0.96. Lastly, on the basis of annual effective doses received to humanoid, Excess lifetime cancer risk was measured which varies from 0.48 × 10–3 to 1.34 × 10–3 with an average value of 0.65 × 10–3 and was much below the world’s average value of 1.45 × 10–3.

Seasonal Prevalence and Host Preference of Some Medically Important Aedes Species of Doon Valley, India

In the recent past, several outbreaks of mosquito-borne diseases in Dehradun city make it necessary for a comprehensive understanding of man-vector contacts, disease transmission and determination of appropriate resting sites for adult mosquitoes. The study was conducted within the periphery of Dehradun city in Doon valley, Uttarakhand state, India consisting of eight (08) locations namely Sahaspur, Premnagar, Raipur, Karanpur, Sahastradhara, Dudhli, Doiwala and Rani Pokhri with the objective to analyze and assess the seasonal prevalence and host choice of the mosquitoes with special reference to Aedes species. Among the eight locations of the current study, Raipur registered the highest mosquito abundance (17%) trailed by Sahaspur (16%) and Karanpur (15%). A low abundance of mosquitoes was registered conjointly from Doiwala and Rani Pokhri areas (9% from each area). In these areas, the profile plots of the 2-way ANOVA displayed the highest variation for the data collected from human habitations followed by bovine sheds, whereas the lowest recorded variation was from the poultry. With regards to seasonal prevalence, the highest mosquito abundance was registered during the monsoon followed by the post-monsoon. In provender analysis, a total of 1912 blood meals were collected for antibody test among which 1851 were found positive, with the highest reaction with human antisera (57.75%), followed by bovine antisera (21.34%) and pigs antisera (4.97%). Ae. aegyptihad the highest Anthropophilic Index (A.I.) with 68.78%, followed by Ae. albopictus (64.89%) and Ae. vittatus (55.55%). However, Human Blood Predominance (H.B.P.) and Pure Human Blood Pervasiveness (P.H.B.P.) were found highest for Ae. albopictus with values 0.43 and 0.44 respectively. The results also show the seasonal prevalence and feeding habits of these vectors. This study would be helpful in formulating season-wise strategies for the control of Aedes vector mosquitoes in different eco-epidemiological situations.

Biology of white grub Anomala dimidiata (Hope) (Coleoptera: Scarabaeidae) in agricultural ecosystem, Doon Valley, (U.K.), India

Present study was carried out to know the biology of white grub Anomala dimidiata (Hope) (Coleoptera: Scarabaeidae) collected from agricultural ecosystem with reference ecological conditions of Doon Valley. Anomala dimidiata (Hope) is a dominant species among the scarabaeid beetles and commonly distributed throughout India. Emergence of beetle is begun at the end of May when first pre-monsoon rain occurred, but peak emergence was observed in the second and third week of July after heavy rainfall. Maximum numbers of beetles were trapped during second and third week of July. Grubs were found throughout the year, causing severe damage to host plants. The males of this species show marked territorial behavior and chase the intruding conspecific females. During the study period, it was observed that the eggs are elongated, cylindrical and laid in clusters in. The observed copulation period was 40.0±14.14 min. The oviposition period was 8.0±1.41 days. The incubation period of eggs was 14.60±0.72 days. Larval period remained for 248 to 278 days. The pupal stage lasts for 14.70±0.62 days. The adult female is broadly oval, less convex shape and slightly larger than male. The stage lasts for 27.75±4.74 days.