Priyankar Chakraborty - Academia.edu (original) (raw)

Papers by Priyankar Chakraborty

Journal of Threatened Taxa, Feb 26, 2023

The author declares no competing interests. Acknowledgements: I would like to thank the fisher wh... more The author declares no competing interests. Acknowledgements: I would like to thank the fisher who provided me with valuable information and gave me permission to use this information together with the photographs. I would also like to thank the reviewers and editors for their careful review of my manuscript and their insightful remarks and suggestions.

Journal of Threatened Taxa

This brief note presents the first photographic record of the butterfly ray, Gymnura cf. poecilur... more This brief note presents the first photographic record of the butterfly ray, Gymnura cf. poecilura, from the Bhagirathi-Hooghly River in West Bengal, eastern India. The photographs were discovered during a pilot survey of riverine elasmobranchs in West Bengal. This record is an important contribution to the knowledge of elasmobranch biodiversity in Indian rivers. The author suggests that further research is needed to better understand the ecology, biology and conservation status of riverine elasmobranchs in India.

Ecological Questions, 2019

This paper documents the first occurrence of an intergrade form of the highly invasive, South Ame... more This paper documents the first occurrence of an intergrade form of the highly invasive, South American armoured suckermouth catfish Pterygoplichthys disjunctivus (Weber, 1991) from the brackish waters of the Sundarban Tiger Reserve, West Bengal, India and the exotic Central American cichlid Amphilophus trimaculatus (Gunther, 1867) from Southern Bengal, India. Another species of cichlid Etroplus suratensis (Bloch, 1790) native to Southern India is also recorded for the wild for the first time from West Bengal. Notes on the possible threats due to invasion, sources of introduction, extent of spread and management of these and other invasive species are discussed in the paper.

Ecological Questions, 2020

Herein, we studied the ichthyofaunal diversity of the Bidyadhari River in the Indian Sundarbans f... more Herein, we studied the ichthyofaunal diversity of the Bidyadhari River in the Indian Sundarbans for three consecutive months (April 2018-June 2018). The fishes in this study were captured and collected from two collecting stations (points) using bag nets operated by local fishers. We determined Simpson’s index of diversity (1-D), Shannon-Wiener’s index (H) and the coefficient of community (CC) to find out the species richness, abundance, evenness and the levels of similarity between the two collection points. We converted the H values to true diversities (effective number of species [ENS]) for an adequate comparison. The indices and coefficient (H = 3.72-4.05, 1-D = 0.96-0.97 and CC = 0.87) indicate that the overall integrity of biodiversity of the two collecting points is moderately high. From the true diversity values, we conclude that the first collecting point is 1.39 times as diverse as the second one. It is attributed to a complex of abiotic and biotic factors that we talk abo...

International Journal of Fisheries and Aquatic Studies, 2020

In this communication, we report the first occurrence of leucism in a species of Bagridae: Mystus... more In this communication, we report the first occurrence of leucism in a species of Bagridae: Mystus gulio (Hamilton 1822) from the Indian Sundarbans. Herein, we discuss the probable causes of the occurrence of the specimen with leucism.

Ecology, Environment and Conservation, Jun 17, 2022

We report the first occurrence of partial xanthism in Notopterus synurus (Bloch and Schneider 180... more We report the first occurrence of partial xanthism in Notopterus synurus (Bloch and Schneider 1801), collected from West Bengal, India, in May 2018. The specimen has yellow colouration on the dorsal portion, head and fins, except for a white ventral region, melanophores on the pectoral fin base and black eyes.

Journal of fisheries, Oct 6, 2021

Two specimens of Arothron hispidus (Linnaeus, 1758) (111.7 – 112.8 mm in standard length), was co... more Two specimens of Arothron hispidus (Linnaeus, 1758) (111.7 – 112.8 mm in standard length), was collected in May 2019 from the Frasergunj fishing harbour in West Bengal, eastern India. Herein, we report this species for the first time from West Bengal. We have described the diagnostic features of the collected specimens and compared them with other Arothron species found in Indian waters

Ecology, Environment and Conservation

Ecological Questions

A lack of current data on Bengal mongoose Herpestes palustris in India inhibits the development o... more A lack of current data on Bengal mongoose Herpestes palustris in India inhibits the development of conservation strategies for this endemic wetland mammal. Structured interviews were conducted to assess the threats and examine the ecological importance of the Bengal mongoose in the Nalban fisheries complex in West Bengal for four months (May to August 2017). Over half of the interviewees perceived that the Bengal mongoose faces several threats and that its population has declined over the years. The respondents said that the removal of vegetation is the main reason for the declining mongoose numbers. The ecological importance of the mongoose was apparent among most interviewees. The results suggest that the endemic Bengal mongoose faces multiple anthropogenic hazards and emphasize the critical need for conservation efforts.

Five species of fishes viz., Ichthyscopus lebeck, Lagocephalus spadiceus, Platax teira, Caesio ca... more Five species of fishes viz., Ichthyscopus lebeck, Lagocephalus spadiceus, Platax teira, Caesio caerulaurea and Thysanophrys celebica are recorded from the Indian Sundarbans, the deltaic bulge of the Ganges River in the State of West Bengal, India. Thysanophrys celebica and Lagocephalus spadiceus forms the first record for the state of West Bengal, India. Diagnostic characteristics and notes on distribution are provided in this paper. The present paper subsidises the already existing list of ichthyofaunal resources from the Indian Sundarbans region to provide a better understanding of the role of different species in the functioning of the ecosystem.

Journal of Threatened Taxa, 2020

The Banded LeopardblowFish, Chelonodontops leopardus (Day 1878) has been recorded in the freshwat... more The Banded LeopardblowFish, Chelonodontops leopardus (Day 1878) has been recorded in the freshwater region of Payaswini River, near Sullia Town, Dakshin Kannada District, Karnataka about 65km away from coastline of the Arabian Sea. The paper provides the taxonomic account of the fish and its distribution is discussed.

Records of the Zoological Survey of India, 2018

TRACE ∴ Journal for Human-Animal Studies, 2022

This article is the first comprehensive scholarly introduction to the century-old conflict betwee... more This article is the first comprehensive scholarly introduction to the century-old conflict between humans and ‘Kamots’ (the local term for sharks) in the Sundarbans, West Bengal, India. Historically, humans predated on sharks, and sometimes, the sharks predated on humans. Utilizing a multispecies and knowledge system lens, this article explores the conflict between two species who effectively impact each other’s lives and waterscapes they share in the brackish contact zone of the Hooghly River. Primarily based on local knowledge system, we create some baseline information about this conflict and attempt to describe the local understanding of Kamot; incidents of Kamot bites and the circumstance of occurrence; the effect of these bites on the people, how they were treated, and finally attempt to identify the traumatogenic sharks of the region which might be associated with the bites.