Jumping Spider found to feed on insect eggs
►Spider’s newly discovered behaviour photographed for the first time.
►Social media helped in the discovery of the behaviour.
►The discovery is significant as it can help in biological methods of pest-control.
►Dr. Krishna Mohan, a Dakshina Kannadiga, is one of the experts involved in the study.
At a time of widespread complaints regarding misuse of social media by people, here is a heartening story of how social media served a useful purpose in advancing scientific knowledge about a unique species of spiders. Thanks to a sharp observation made by a Facebook user, one of the largest social media platforms in the country, an endemic South-Asian species of jumping spider, Hyllus semicupreus has been discovered to feed on insect eggs for the first time ever.
This behaviour is a new discovery for the species and has been reported by a team of researchers based in Mumbai, based on the inputs provided by a wildlife photographer from Andhra Pradesh. The discovery is significant as it can help in furthering biological means of pest control.
The discovery is published in the latest issue of 'Peckhamia', a globally renowned, peer-acclaimed international scientific journal dedicated to the study of jumping spiders. The study was collaborated with Dr. David E. Hill, a world authority on jumping spiders, and Dr. Richard J. Pearce, a leading British spider expert. It was led by principal author and lead researcher Javed Ahmed, along with co-researchers Rajashree Khalap and Dr. Krishna Mohan, who is a naturalist and surgeon based in Moodabidri. The discovery was reported by wildlife photographer AN Suresh Kumar, who first recorded this behavior and shared his observations with the team.
THE DISCOVERY
Hyllus semicupreus is a large, colourful bronze-colored jumping spider. It was previously recorded for the first time from Mumbai in 2015 and also been photographed across Maharashtra, especially in Raigad district. The spider can be easily identified from photographs and is known to feed on small insects and such.
Recently, and for the first time, wildlife photographer and amateur naturalist AN Suresh Kumar came across the spider feeding on leaf-footed bug eggs (familyCoreidae) on his farmland in Andhra Pradesh. Not knowing, he had clicked a new behavior and shared the photographs on the "Spiders of the Indian Subcontinent", a specialist Facebook group which is focusing on the documentation, identification and study of Indian spiders.
The photographs were spotted by arachnologist and researcher, Javed Ahmed. Realizing the importance of this chance discovery, Ahmed encouraged the photographer to contribute his findings to science to facilitate a better understanding of spiders, which are severely understudied in India compared to other wildlife species such as butterflies, birds and mammals.
'Oophagy' or preying on eggs is an interesting behavior, which, while reported in a number of jumping spiders, has never before been observed in Hyllus semicupreus, a relatively common jumping spider. This discovery is significant because leaf-footed bugs are severe agricultural pests and spiders such as Hyllus semicupreus can be acted as important pest-control agents.
Acknowledging the potential use of social media, Javed Ahmed observes: “In this digital age of lighting fast internet connections and powerful pocket computers (smart phones), which are carried by almost everyone, there's a lot of potential for social media platforms to act as a bridge between scientists and hobby photographers, to bring to light unique observations on the natural world never seen before. An important thing to remember though is, these observations, if not reported on an academic platform, such as a peer reviewed scientific journal, would be otherwise useless and lost forever.”
Photos: A. N. Suresh Kumar
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Chhattisgarh Vedanta power plant blast: Death toll rises to 20; sixteen workers undergoing treatment
Sakti (Chhattisgarh) (PTI): The death toll in a blast at the Vedanta power plant in Chhattisgarh's Sakti district has mounted to 20 with seven more workers succumbing to injuries, while 16 others are undergoing treatment at different hospitals, officials said on Wednesday.
The deceased include six labourers from West Bengal, five from Chhattisgarh, three each from Jharkhand and Uttar Pradesh, two from Bihar, and one from Madhya Pradesh.
The opposition Congress has demanded registration of an FIR against the plant management and a judicial inquiry into the incident.
The explosion occurred on Tuesday afternoon in a steel tube carrying high-pressure steam from the boiler to the turbine at the Vedanta Ltd power plant located in Singhitarai village, leaving several workers with severe burn injuries.
According to officials, four workers died on the spot, while nine others succumbed to injuries soon after the incident.
Seven more workers have died in hospitals, raising the toll to 20, Sakti Collector Amrit Vikas Topno told PTI on Wednesday.
He said that a total of 36 workers were affected in the blast, and 20 of them died.
"Of the 16 injured workers, five are undergoing treatment in hospitals in Raipur, while 11 others are in hospitals of Raigarh, the neighbouring district of Sakti," he added.
Topno added that every possible effort was being made to provide the best medical treatment to the injured.
The deceased were identified, and their family members are being contacted. Arrangements have been made to transport the mortal remains to their native villages via ambulance following the postmortem examination and to provide immediate financial assistance, he said.
Chief Minister Vishnu Deo Sai has announced a compensation of Rs 5 lakh to the families of each deceased worker and Rs 50,000 for those injured.
Vedanta Power has also announced a Rs 35 lakh compensation for the family of each deceased worker, along with employment support.
The company will also provide Rs 15 lakh to each injured person, ensure salary continuation until recovery, and offer counselling support, a statement from the plant management said.
The chief minister has ordered an inquiry by the Commissioner of the Bilaspur division, assuring strict action against the guilty.
He directed officials to ensure free and proper medical treatment for all injured and emphasised that no negligence in their care would be tolerated.
The district administration has also ordered a separate magisterial probe, while the company has initiated its own internal investigation.
Collector Topno has appointed the Sub-Divisional Magistrate (SDM) of Dabhra to conduct the magisterial inquiry.
The SDM has been asked to submit a report within 30 days covering key aspects, including the cause of the accident, whether it was due to technical or human error, and details of safety inspections carried out at the plant.
Meanwhile, the opposition Congress has demanded registration of an FIR against the plant management and a judicial inquiry into the incident.
State Congress communication wing head Sushil Anand Shukla on Wednesday alleged negligence on the plant management's part and accused the government of attempting to shield those responsible.
He also demanded compensation of Rs 1 crore for the families of the deceased and Rs 50 lakh for the injured.
The construction of a 1,200 MW coal-based thermal power project (two units of 600 MW each) in Singhitarai, originally owned by Athena Chhattisgarh Power Ltd, started in 2009, but remained stalled between 2016 and 2022.
Vedanta acquired the plant in 2022, after which a 600 MW unit was completed and commissioned in August last year, while the second unit is still under construction.
The deceased have been identified as Amrit Lal Patel, Thanda Ram Lahre, Udhab Singh Yadav, Rameshwar Mahilange, and Nadeem Ansari (all from Chhattisgarh); Susanta Jana, Sheikh Saifuddin, Manas Giri, Kailash Mahto, Shibnath Murmu, and Dipankar Singh (West Bengal), Tarun Kumar Ojha, Abdul Karim and Ashok Parhiya (Jharkhand), Raju Ram, Pappu Kumar and Brijesh Kumar (Uttar Pradesh), Aakib Khan and Ritesh Kumar (Bihar), and Chitranjan Dhulai of Madhya Pradesh, officials said.
