Evaluation of Community Composition of Dragonflies and Damselflies ( Order : Odonata ) in Nalsarovar Bird Sanctuary , Gujarat , India (original) (raw)
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A Study on Diversity and Habitat Characterisation of Odonata at Nalsarovar Bird Sanctuary, India
International Journal of Scientific Research in Biological Sciences
A study was carried out in Nalsarovar Bird Sanctuary to assess habitat characteristics preferred by Odonates (Dragonflies and Damselflies) in Nalsarovar Bird Sanctuary (Ramsar Site), Gujarat. The entire study area was stratified into 6 different habitat type. Transects Survey was carried out covering all habitats. Each transect was repeatedly surveyed covering all seasons. A total of 30 species of dragonflies and damselflies were encountered belonging to 5 families namely Libellulidae, Gomphidae, Aeshnidae, Coenagrionidae, and Lestidae during the entire study. The most habitat type utilized by Odonates, out of total individual encountered during survey are Habitat-Type-4 and Habitat-Type-2 and it contributes to around 64.3 % of Odonate within study area. However, most preferred habitat by Anisoptera (Dragonflies) is Habitat-Type-4. Similarly, most preferred habitat by Zygoptera (Damselflies) is Habitat-Type-6 and Habitat-Type-2. Relative frequency (%) and relative abundance (%) of each Odonate species (Dragonflies and Damselflies) were calculated based on data collection. Relative frequency (%) of Trithemis pallidinervis was recorded highest in most of the habitats and Relative abundance (%) of Trithemis pallidinervis highest in Habitat-Type-3 compared other species within habitat irrespective of seasonality. However, Pantala flavescens were recorded maximum in the majority of habitat due to its monsoon season migratory behaviour.
Travaux du Muséum National d’HistoireNaturelle “GrigoreAntipa”, 2020
Dragonfly and damselfly (Odonata) species diversity was studied in the Bor wildlife sanctuary from 2011 to 2018. A total of 72 species of odonates belonging to 8 families were recorded. The study adds three new species for the Vidarbha region. The highest number of odonates belonged to the family Libellulidae (31 species) followed by Coenagrionidae (15 species), and Aeshnidae (six species). Of the total, 30 species were very common, 18 were common, seven were frequent common, 11 rare and six very rare. Among all, six species were Data Deficient, Indothemis carnatica (Fabricius, 1798) is listed as Near Threatened and 64 were Least Concern, in IUCN red-list of threatened species. The observations support the value of the wildlife sanctuary area in providing valuable resources for Odonata.
2022
The study was carried out from June 2021 to May 2022, to know the status and diversity of the Odonata (Dragonfly and Damselfly) fauna at Ecopark, West Bengal. They are essential for environmental monitoring and serve as biological indicators of the health of the ecosystem. During the study period, 34 species of odonates from 26 Genera and 5 Families were identified in the study area. Three families made up Suborder Anisoptera, while two families made up Suborder Zygoptera. Among them, 29 species of dragonflies belonged to the Aeshnidae, Gomphidae and Libellulidae families, while 11 species of damselflies belonged to the Coenagrionidae and Platycnemididae families. The family Libellulidae had the highest species composition (62%) followed by the family Coenagrionidae (29 %). Among all Odonates, 35% were very common (VC), 44% Common (C) 15% rare (R) and 6% were very rare (R) on the presence of their abundance. Such observation can provide insightful data on the status of Odonate populations in context to Rajarhat grassland.
Dragonflies, Damselflies (Order-Odonata) and Butterflies are one of the most common insects flying over forest, agriculture fields, wetlands and rivers. About 6,000 species of 37 families distributed all over the world and India diverse with 491 species of 25 families of odonates. Odonates, being predators both at larval and adult stages, play a significant role in the wetland ecosystem. Adult odonates feed on mosquitoes and other blood-sucking flies and act as an important bio-control agent of these insects. Lepidoptera contain about 1, 74,250 species of 135 families in all over the world and India varied with 15,065 species of 70 families. Butterflies are important aspect of ecosystems for they interact with plants as pollinators and herbivores. They are good bio-indicators of environmental changes which should be protected to conserve the biodiversity and environment. Study was done in Nawabganj Bird Sanctuary during January 2013 to January 2014. This Sanctuary has an area of 224.60 hectares and geographically located at 260 34' N and 80040'E. The study reveals 18 species of odonates belonging to 15 genera and 5 families, which include Libellulidae (9 species), Aeshnidae (3 species), Coenagrionidae (3 species), Gomphidae (2 species) and Platycnemididae (1 species). Out of total 18 Lathrecista asiatica and Ischnura aurora were abundant or very common species and Anax guttatus and Bradinopyga geminata were rare in observation. A total 30 species of butterflies belonging to 22 genera and 4 families, which include Papilionidae (6 species), Pieridae (8 species), Nymphalidae (14 species) and Lycaenidae (2 species), in which Danaus chrysippus and Junonia almana were very common species and Euploea core and Papilio demoleus rare in observation. In present study family Nymphalidae (Lepidopteron) and Libellulidae (Odonates) shows more abundance than other families. INTRODUCTION Dragonflies, damselflies (Order-Odonata) and butterflies are one of the most common insects flying over forest, agriculture fields, wetlands and rivers. About 6,000 species of 37 families distributed all over the world and India diverse with 491 species of 25 families of odonates [10]. Odonates, being predators both at larval and adult stages, play a significant role in the wetland ecosystem. Adult odonates feed on mosquitoes and other blood-sucking flies and act as an important bio-control agent of these insects. Being very specific about breeding habitat, odonates are sensitive indicators of the health of wetland and its landscape. Lepidoptera contain about 1, 74,250 species of 135 families in all over the world and India varied with 15,065 species of 70 families [14]. Butterflies are important aspect of ecosystems for they interact with plants as pollinators and herbivores, play an important role in pollination and as a bio-indicator species. They are good bio-indicators of environmental changes which should be protected to conserve the biodiversity and environment. The impact of landscape changes going on since last fifty years in India on dragonflies, damselflies and butterflies distribution and status is very sparsely known.
Dragonflies and damselflies (Insecta: Odonata) of the Kole Wetlands, central Kerala, India
2021
A year-long study was conducted at the Kole Wetlands, a Ramsar site in central Kerala to document the diversity of dragonflies and damselflies and understand their seasonality. Checklist survey method was used to sample adult odonates in 30 randomly chosen locations. A total of 44 species (30 dragonflies and 14 damselflies) belonging to 33 genera and eight families were recorded in the study area. Species richness showed a peak in the post-monsoon season and a dip in the summer. The observations support the value of the Kole Wetlands in providing valuable resources for Odonata.
2021
Insects belonging to the order Odonata are ecological indicators and studies of insects show that, certain species exhibit high association with particular ecological conditions. Panvel is one of the fast-changing metro city in Navi Mumbai, Maharashtra, India, due to ongoing construction of Navi Mumbai International Airport (NMIA), rampant urbanization, industrialization and unplanned development have resulted into ecological disturbances and habitats fragmentation. Literature review suggest that no baseline data is available with respect to Odonata, particularly of dragonflies and damselflies. Hence present study is undertaken. 15 species of Odonates representing 2 suborders, 2 families and 2 subfamilies. Recorded Odonates belongs to families Libellulidae & Coenagrionidae and species of family Libellulidae are found to be more abundant in the study area.
EAJBSA Volume 14 Issue 1 Pages 133 139, 2021
Dragonflies and Damselflies (Insecta: Odonata) of Hirpora Wildlife Sanctuary are presented. The Sanctuary is located in the District Shopian of Kashmir Valley (33°39'28.6"N 74°41'15.2"E). The area is rich in both floral and faunal diversity with most of the area covered with lush green forests. Around the sanctuary, Agro and Horticultural plantations such as Apple, Pear, Peach and vegetable crops abides most of the land cover in the area. The present study was carried out from June to October 2020. A total number of 10 species from six families were recorded in and around the area. The most abundant species recorded are from the family Libellulidae which are active mostly in the months from June to October. A number of freshwater bodies flow through the district and receives annual precipitation of around 1800mm, which makes the area more suitable for the Odonates diversity. Here we present the first preliminary report of order Odonata collected from the sanctuary and adjoining areas of Kashmir Valley.
Journal of Entomology and Zoology Studies , 2014
The present paper deals with the study of species richness and diversity of butterfly fauna in the in the experimental garden. The population trends of butterflies were monitored for one year using transects counting method. A total of 66 species of butterflies belonging to five families and 47 genera were recorded during the study period. The family Nymphalidae showed the maximum species richness, comprising of 15 genera and 23 species, followed by Lycaenidae (14 genera, 14 species), Pieridae (8 genera, 12 species), Hesperiidae (8 genera, 9 species) and Papilionidae (2 genera, 8 species). A total of 1164 individuals were recorded of which Eurema hecabe (Linn.) was the most dominant species of butterfly in terms of number of individuals (38) followed by Junonia atlites (36). From the conservation point of view, the study area is undisturbed and rich in butterfly fauna.
Dragonflies and damselflies (Odonata) of Silent Valley National Park, Kerala, India and its environs
Entomon, 2024
The odonate diversity of the Silent Valley National Park (SVNP) in the Western Ghats (WG) of Kerala state, in southern India, is discussed. A total of 111 species of odonates (41 Zygoptera and 70 Anisoptera) including 29 endemics were recorded for the SVNP region, out of the 181 species (14 families, 87 genera with 68 WG endemics). SVNP harbours 53.37 per cent of WG and 61.34 per cent of the odonate diversity of Kerala. In addition, this includes 42.64 percent endemic odonates of Kerala and 35.80 percent of WG. With respect to IUCN Red List status, there were two vulnerable, three near threatened, 84 least concerned, 17 data deficient, and five species whose status was not assessed. Family Libellulidae (40 species) dominated the diversity, followed by Coenagrionidae and Gomphidae (16 species each). None of the species listed from SVNP is protected under the Indian Wildlife (Protection) Amendment Act, 2022.
Diversity of Odonata (Insecta) in Padmatola wetland, Balasore, Odisha, India
The present study has been carried out in the Padmatola wetland of Balasore district of Odisha, India during December 2013 and May 2014. This study emphasises a checklist of total 51 species of odonata (Dragonflies and Damselflies). Among this the suborder anisoptera represented by 33 species with 22 genera from 4 fami-lies and suborder zygoptera represented by 18species with 9 genera from 3 families. Family Libellulidae be-longing to anisoptera is dominant with 28 species and Coenagrionidae belonging to zygoptera is richest with 15 species. But the rapid degradation of the wetland by human activities are the main threat to the odonates along with the biodiversity.