Muralidharan Manoharakrishnan

Muralidharan Manoharakrishnan
Dakshin Foundation · Biodiversity and Resource Monitoring

Master of Science

About

20
Publications
5,883
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
29
Citations

Publications

Publications (20)
Article
Full-text available
We investigated differences in resource use between two sympatric sea snake species from the west coast of India, Hydrophis curtus and H. schistosus, and described the impacts of fishing on the interactions of these species. We compared habitat use, diet, and isotopic niche width between species to determine resource overlap. We then compared troph...
Article
• The impacts of fisheries on several charismatic marine fauna have been a subject of global concern. Sea snakes share the same habitats as many commercially important fish species and often end up as fisheries bycatch. • Previous studies of bycatch from India have been limited to individual reports of mortality, with little information on the regi...
Article
The nest environment plays an important role in influencing sea turtle hatchling phenotype. Increasing global temperatures can potentially cause detrimental changes to hatchling size and performance and ultimately influence their recruitment into the adult population. The mass nesting rookeries of olive ridleys in Odisha on the east coast of India...
Preprint
Full-text available
Species interactions are central to community assembly and ecosystem functioning. Sea snakes play an important role as mesopredators and as intermediate links in coastal marine food webs. However, they are impacted by anthropogenic pressures such as fisheries throughout their range. We investigated differences in resource use between two sympatric...
Technical Report
Full-text available
Elasmobranchs (sharks and rays) are particularly vulnerable to exploitation due to their slow growth and low fecundity and are one of the most threatened marine faunal groups across the globe. India is amongst the top 3 elasmobranch fishing nations in the world. However, steady declines in elasmobranch landings despite increasing fishing efforts in...
Book
Full-text available
Outreach Book on Sharks and Rays in Malvan, Maharashtra
Book
Full-text available
Marathi translation of the Outreach Book on Sharks and Rays in Malvan, Maharashtra
Article
Full-text available
Bycatch poses a significant threat to marine megafauna, such as elasmobranchs. India has one of the highest elasmobranch landings globally, through both targeted catch and bycatch. As elasmobranchs contribute to food and livelihood security, there is a need for holistic approaches to bycatch mitigation. We adopt an interdisciplinary approach to cri...
Technical Report
Full-text available
This report is an overview of our work on sea snake ecology and allied outreach activities from January 2018 - May 2019. We outline our key findings on the ecology of sea snakes off the Sindhudurg coast of Maharashtra, India and the possible effects of fisheries on the same.
Article
Full-text available
Mechanised fishing such as trawling was introduced in India in the 1950s to target high value catch, driven by foreign interests. Trawling changed the face of Indian fisheries; while it caused an immense growth in marine production, it also brought about several environmental impacts. Bycatch, which is the incidental capture of non-target species,...
Book
Full-text available
Sea snake diversity is not well known in many parts of its distributional range. This book aims to highlight the species diversity of sea snakes from the west coast of India and is a product of the continued sea snake ecology project in Maharashtra, India

Network

Cited By

Projects

Projects (5)
Project
Sharks and rays are highly threatened by unsustainable fishing activities. This project aims to characterise shark and ray fisheries in Malvan, on the west coast of India, understand their socio-economic value and assess measures to reduce their bycatch.
Project
1) To monitor green turtle population and distribution in Lakshadweep In order to manage a population, it is important to get information on its size, demography and distribution. Monitoring studies will provide records on the number of individuals as well as the different size classes that constitute this population. Information such as use of alternate foraging sites by this population will also be determined by ascertaining their distribution. 2) To determine the genetic stock of the green turtle foraging group with respect to nesting populations in the Indian Ocean Genetic analysis can help link this foraging population and nesting populations in order to identify the rookeries from which they are derived and provide insights into how this population can be recovered. 3) To study foraging behaviour of the green turtles in Lakshadweep By studying their foraging sites and behaviour, certain characteristics such as alternate diets, cyclic usage of foraging sites, site fidelity etc. will be determined. Foraging studies will also be crucial in understanding diet and growth rate of the population. As their overgrazing is causing changes in the sea grass distribution and abundance, this might cause the green turtles to alter their feeding site(s) and strategies (Moran & Bjorndal 2005). In addition to their sea grass diet, it is important to document what other organisms are consumed by this population and determine if they switch diets as per requirement and availability such as in the Florida population (Williams et al. 2014). 4) To develop conflict mitigation techniques using information on local distribution and foraging By accounting for the time spent by turtles and their fidelity towards certain foraging sites, habitat use and resultant recovery of the sea grass meadows can also be understood better. In order to control the turtle-fisher conflict, their site fidelity and movement will have to be monitored.
Project
We aim to characterise and study various aspects of sea snake assemblage along the marine coast of India. We focus on the effects of fishing pressure, in particular trawling, on the feeding ecology, population biology and community structure of these reptiles.