Papers by Sanjeev Kumar Sahu
Zoology and ecology, 2023
Morphological differentiation in the Indian major carp, Labeo catla, in the Ganga and Narmada riv... more Morphological differentiation in the Indian major carp, Labeo catla, in the Ganga and Narmada rivers was studied using image-based morphometric and multivariate analytical techniques. Twenty-three truss-network-based distances connecting 11 anatomical landmarks on the fish were measured from the digital images of the specimens collected from seven stations, four of which were set up along the river Ganga, and the other three stations along the river Narmada. For analysis, five stations were considered, as the samples from the three stations on the River Narmada were pooled and treated as a composite sample (Narmada). The multivariate analysis of variance showed evidence for significant morphometric differences between samples collected from the Ganga and those from the Narmada rivers. The subsequent Linear Discriminant Analysis explained 86% of the variability between the stations by two discriminant functions. This fact suggested the existence of three morphometrically different populations of the species along the Ganga. These populations were predominantly distributed in the middle stretch of the river (Ganga_Middle), the Bhagirathi-Hooghly stretch, and the Padma stretch, which are isolated by a barrage that does not allow free bidirectional movement of fish. The important discriminating morphometric characteristics were traits from the head and caudal region as well as the body depth of fish. The relatively narrower angles of snout profiles and lower body depths of the studied fish in populations from the Padma and Bhagirathi-Hooghly stretches of the River Ganga led to more pointed snouts and slenderer bodies. Morphological differentiation can be used as an environmental predictor that, in turn, would be of use in developing effective management strategies for the fish species of stock management concern.
Fisheries Management and Ecology, Apr 25, 2023
In five islands of Indian Sundarbans, issues were identified related to women fishers associated ... more In five islands of Indian Sundarbans, issues were identified related to women fishers associated with small‐scale fisheries (SSF) and strategies were formulated to address them in the context of “Voluntary Guidelines for Securing Sustainable Small‐Scale Fisheries” formulated by FAO being followed by signatory nations. Women were actively involved in different fisheries‐related sectors for earning their livelihoods. Despite the significant contribution of women in livelihood and nutritional security, their roles are often unrecognized leading to unfair distribution of benefits between men and women. The strategic and practical gender constraints were identified; “lack of awareness and low social participation” was the major factor as perceived by women fishers with the highest score (86.06). It was identified that gender‐sensitive extension approaches, training methodologies, and region‐specific appropriate technologies are to be applied to uplift the women members of the fishers' community associated with SSF. The aforesaid findings may be considered as precursors for formulating location‐specific strategies to address the gender gap and to create gender equality in SSF that will lead to increased productivity and sustainability of SSF across the world.
Frontiers in Sustainable Food Systems
Small indigenous fishes (SIF) play a crucial role in supporting the livelihoods and nutritional s... more Small indigenous fishes (SIF) play a crucial role in supporting the livelihoods and nutritional security of the rural population in Southern Asia. However, their abundance and diversity are under threat due to overexploitation and profitable extensive aquaculture, resulting in a sharp decline, particularly in India. Unfortunately, conservation strategies for SIF have received little attention from researchers, making it imperative to understand stakeholders’ decision-making processes to develop effective conservation strategies. This article aims to quantitatively identify the factors that influence fishermen’s intention to participate in and pay for SIF conservation efforts. The study utilizes questionnaire-based survey data from 100 households engaged in local fisheries in the rural Indian Sundarbans. To gain critical insight into fishermen’s decision processes, a bivariate logistic Generalized Additive Model is employed, focusing on willingness-to-participate and willingness-to-p...
Environmental Science and Pollution Research
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
Concept Building in Fisheries Data Analysis, Oct 12, 2022
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Papers by Sanjeev Kumar Sahu