Dear Marmamm peeps
Happy to share with a recent article that we published using primary data and open access gene sequences on dugongs.
Please find the article here.
1. India plays a significant role in dugong conservation by having the largest population within South Asia. The status of dugongs in India is largely unknown due to a
paucity of reliable ecological data. This study generated mitochondrial control
region sequences from 10% of dugong individuals from existing populations
within India. Furthermore, data generated in this study were compared with the
global data to assess genetic lineages, population structure, and genetic diversity
of Indian populations.
2. Multiple analyses suggest that the Indian dugong populations are part of a single
genetic cluster, comprising South Asia, North-west Indian Ocean, and South-west
Indian Ocean populations. Despite small population size, they retain high genetic
diversity with unique mitochondrial DNA haplotypes within South Asia. Within
India, novel haplotypes are observed from all dugong habitats sampled, with overall high haplotype diversity (0.85 ± 0.04) but low nucleotide diversity
(0.005 ± 0.001). Indian populations exhibit genetic differentiation with higher
within-population variance (63.41%) than among populations (36.59%). Two of
the haplotypes observed in India are shared with Sri Lanka, implying genetic connectivity between these populations.
3. The genetic data from Indian dugong populations provide critical insights into the
identification of dugong corridors and important dugong conservation zones in
India. We suggest site-specific interventions, including the creation of new marine
protected areas and boundary reorganization and expansion of other existing
protected areas, to ensure population connectivity. In addition, simultaneous
efforts towards seagrass meadow restoration, reduction of dugong mortalities,
and community participation in dugong conservation are recommended for population recovery of this threatened marine herbivore.
regards
Anant Pande, Ph.D
Department of Endangered Species Management
Wildlife Institute of India