Rajan, P., Duke, N.C., Mathew, S., and Cherian, E. (2022) Bruguiera × rhynchopetala (Rhizophoraceae) newly reported in India, far west of south-east Asian, east Asian and western Pacific regions. Rheedea, 32 (2). pp. 109-119.

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Abstract

Bruguiera × rhynchopetala (W.C.Ko) N.C.Duke & X.J.Ge, a natural hybrid between mangrove species, B. gymnorhiza (L.) Lam. and B. sexangula (Lour.) Poir., is newly reported for India. This is the first time a Bruguiera hybrid has been reported outside the south-east Asian, east Asian and western Pacific region. The intermediate nature of this new entity for India was confirmed using morphometric analyses. It was observed within the reportedly threatened mangrove area of Vembanad lake which is the largest Ramsar site on the South West coast of India. These regions were noted for the co-occurrence of their putative parental taxa. Our report updates the currently existing distribution of B. × rhynchopetala and further challenges prior assumptions that populations of B. gymnorhiza and B. sexangula at their western limit of overlap show a greater degree of genetic separation between parent species. Also, it emphasises the urgency of conserving the Vembanad ecosystem and the biological diversity at risk.

Item ID:	75414
Item Type:	Article (Research - C1)
ISSN:	0971-2313
Keywords:	Bruguiera × rhynchopetala, Rhizophoraceae, Mangroves, Western Pacific region, India, Hybrid, Morphometric analysis
Date Deposited:	18 Jul 2022 23:24
FoR Codes:	31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310411 Plant and fungus systematics and taxonomy @ 40% 31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310402 Biogeography and phylogeography @ 30% 41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410401 Conservation and biodiversity @ 30%
SEO Codes:	18 ENVIRONMENTAL MANAGEMENT > 1802 Coastal and estuarine systems and management > 180203 Coastal or estuarine biodiversity @ 40% 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280111 Expanding knowledge in the environmental sciences @ 30% 18 ENVIRONMENTAL MANAGEMENT > 1802 Coastal and estuarine systems and management > 180201 Assessment and management of coastal and estuarine ecosystems @ 30%
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