000165186 001__ 165186
000165186 005__ 20251219174251.0
000165186 0247_ $$2doi$$a10.1093/aob/mcaf320
000165186 0248_ $$2sideral$$a146762
000165186 037__ $$aART-2025-146762
000165186 041__ $$aeng
000165186 100__ $$aRazanamaro, Onja Hariveloniaina Morilline
000165186 245__ $$aIntegrating genomics and habitat surveys to uncover population structure and regeneration challenges in Adansonia suarezensis (Malvaceae)
000165186 260__ $$c2025
000165186 5060_ $$aAccess copy available to the general public$$fUnrestricted
000165186 5203_ $$aBackground and Aims
Adansonia suarezensis, one of Madagascar’s six endemic baobab species, is currently classified as Endangered by the IUCN Red List and faces severe risks from habitat loss and climate change, being predicted to become extinct by 2080 if no conservation actions are taken. We combined population genomics with ecological surveys to assess the genetic diversity, population structure, and regeneration dynamics of this species across representative sites.
Methods
We generated SNP data from 118 mature individuals sampled across four sites using a target capture approach and evaluated genetic diversity, inbreeding, and population structure. Ecological surveys were conducted at Mahory and Beantely, representing the two genetic clusters, to compare forest structure, floristic composition, and regeneration dynamics. Vertebrate diversity was also recorded to assess its potential influence on regeneration.
Key Results
Population genomic analyses identified two moderately differentiated genetic groups, with Mahory clearly distinct from the northern localities. Pairwise FST values ranged from 0.054 to 0.133, all statistically significant (p = 0.001). Despite low overall genetic diversity, no evidence of inbreeding was detected, consistent with bat-mediated cross-pollination. Ecological surveys revealed higher species richness, greater structural diversity, and stronger regeneration signals in Mahory, especially in core zones, compared with Beantely. By contrast, regeneration in Beantely was weak, with few saplings and juveniles despite relatively high adult densities. These differences likely reflect stronger edge effects, greater disturbance, and lower animal diversity at Beantely, which may limit pollination and seed dispersal
Conclusions
Our results demonstrate that A. suarezensis is structured into two genetic groups with low but significant differentiation and that regeneration failure is widespread, but most pronounced in degraded edge habitats. Conservation strategies should therefore prioritize the protection of core forest zones, safeguard pollinator and disperser communities, and reinforce natural regeneration through targeted restoration. By integrating genomic and ecological perspectives, this study provides essential guidance for the long-term conservation of A. suarezensis.
000165186 540__ $$9info:eu-repo/semantics/embargoedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000165186 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000165186 700__ $$aRandriatsitohaina, Richard Dominique
000165186 700__ $$aTsy Jean Michel, Leong Pock
000165186 700__ $$aRamiliarisona, Lalaina Fenosoa
000165186 700__ $$aNantenaina, Rindra Harilanto
000165186 700__ $$aRaoelinjanakolona, Nasandratra Nancia
000165186 700__ $$aRandriarimalala, Tojonirina
000165186 700__ $$aRamarosandratana, Niry Hasinandrianina
000165186 700__ $$aRaolihanitrasina, Salohy Elianna
000165186 700__ $$aVelonjara, Michaël Angelo Eddie
000165186 700__ $$aRasoazanakolona, Joséane
000165186 700__ $$aRaherijaona, Mbolamampionona Bernadette
000165186 700__ $$aRasoarinoro, Vololoniaina Evatiana
000165186 700__ $$aAndrianampionona, Saidon Aurelien Clermondaire
000165186 700__ $$aByrne, Alex
000165186 700__ $$aGravendeel, Barbara
000165186 700__ $$aSales, Ester
000165186 700__ $$aAndriaharimalala, Tahiana
000165186 700__ $$aRanaivoandriamanantena, Tonisoa
000165186 700__ $$0(orcid)0000-0001-5658-8411$$aViruel, Juan$$uUniversidad de Zaragoza
000165186 7102_ $$15011$$2063$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Botánica
000165186 773__ $$g(2025), [50 pp.]$$pAnn. bot.$$tAnnals of botany$$x0305-7364
000165186 8564_ $$s1428056$$uhttps://zaguan.unizar.es/record/165186/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-12-12
000165186 8564_ $$s1296919$$uhttps://zaguan.unizar.es/record/165186/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-12-12
000165186 909CO $$ooai:zaguan.unizar.es:165186$$particulos$$pdriver
000165186 951__ $$a2025-12-19-14:42:39
000165186 980__ $$aARTICLE