Stable isotopes and diet uncover trophic-niche divergence and ecological diversification processes of endemic reptiles on Socotra Island

Laso, Natalia Judith; Martínez, Sergi; Pujol-Buxó, Eudald; Viñolas, Amador; Llorente, Gustavo A.; Sanpera, Carola; Vasconcelos, Raquel; Carranza, Salvador; Santos, Xavier

doi:10.1016/j.jcz.2017.01.005

Cited by 11 publications

(6 citation statements)

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“…These include species that originated in situ from ancestors present at the islands when they separated from the mainland, as well as species that arrived as new colonizers (e.g. Gómez-Díaz et al ., 2012; Martín et al ., 2017; Tamar et al ., 2019). Additionally, Socotran geckos have a wide range of activity pattern and habitat use, which further exposes them to a wider variety of parasites.…”

Section: Discussionmentioning

confidence: 99%

Parasites in a hotspot: diversity and specificity patterns of apicomplexans infecting reptiles from the Socotra Archipelago

et al. 2020

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Section: Discussionmentioning

confidence: 99%

Parasites in a hotspot: diversity and specificity patterns of apicomplexans infecting reptiles from the Socotra Archipelago

et al. 2020

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“…nov.. The study of its diet, using DNA metabarcoding or isotope analyses, would probably give us some insight on this (Martín et al 2017;Pinho et al 2018).…”

Section: Discussionmentioning

confidence: 99%

A new endemic species of Hemidactylus (Squamata: Gekkonidae) from São Nicolau Island, Cabo Verde

Vasconcelos

Köhler

Géniez

et al. 2020

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A new species of gecko of the genus Hemidactylus (Squamata: Gekkonidae) is described from São Nicolau Island, Cabo Verde Archipelago, and the Sal and Boavista island populations of Hemidactylus boavistensis (i.e., Hemidactylus boavistensis boavistensis comb. nov. and Hemidactylus boavistensis chevalieri comb. nov.) are recognized as subspecies. Hemidactylus nicolauensis sp. nov. is genetically distinct from H. bouvieri, to which it has previously been referred, and from all other closely related endemic Hemidactylus from Cabo Verde Islands in mitochondrial (12S & cyt b) and nuclear (RAG2, MC1R) markers. It is characterized morphologically by its distinct colouration and a diagnostically different arrangement of digital lamellae. With the description of this new species, São Nicolau is now known to harbour three single-island endemic gecko species, and the documented reptile diversity in Cabo Verde is raised to 23 endemic species. As a result of our taxonomic changes, existing conservation regulations should be updated and the conservation status of these taxa should be re-evaluated.

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“…We did not consider phylogenetic diversity because most of the phylogenetic relationships of Socotran reptiles with other taxa are still unresolved. Additionally, examples of niche divergence and ecological diversification were already detected among closely-related reptiles in Socotra [ 53 , 54 ], suggesting a detach between branch lengths and functional diversity that would hamper a phylogenetic diversity approach. Biodiversity features were considered to be protected if percent cover within PAs was higher than the set representation target.…”

Section: Methodsmentioning

confidence: 99%

Combining molecular and landscape tools for targeting evolutionary processes in reserve design: An approach for islands

et al. 2018

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The importance of targeting ecological and evolutionary processes in reserve design has been widely acknowledged in the literature but rarely implemented on islands. Using Socotran reptiles as models, we aim to relate richness of widespread and restricted-range species directly with landscape variables and to compare the impact of setting conservation targets for lineages versus species. Socotra Island is a UNESCO Natural World Heritage Site, containing high levels of endemism in relation to its area, especially of reptiles, the vertebrates with the most comprehensive available genetic data. We predicted the occurrences of reptile species using distribution models and used a novel approach to interpolate maps of spatial phylogenetic patterns. Patterns of intra and interspecifc diversity and differences between spatial outputs of lineage and species richness were related to eco-geographic variables. We evaluated differences in target achievement for each conservation unit within protected areas (PAs) under the current Zoning Plan (ZP) using gap and reserve design analyses. Although intraspecific richness was strongly correlated with interspecific richness, differences in their spatial distribution reached ~30% in some areas. Differences were more pronounced for wide-ranging than restricted-range taxa. Gap analysis indicates that most conservation units are under-represented in sanctuaries and that intra and interspecific richness were significantly higher outside PAs. This work will guide local-scale conservation planning as the ZP is due to be re-evaluated. This is one of the few studies on islands using genetic data from an entire class of vertebrates to incorporate lineage diversity in reserve design. This study provides an alternative methodological framework for supporting the use of landscape and genetic tools in reserve design, circumventing the use of phylogenetic distances and deterministic spatial interpolation of lineage diversity that can be widely applied to other systems.

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Stable isotopes and diet uncover trophic-niche divergence and ecological diversification processes of endemic reptiles on Socotra Island

Cited by 11 publications

References 64 publications

Parasites in a hotspot: diversity and specificity patterns of apicomplexans infecting reptiles from the Socotra Archipelago

Parasites in a hotspot: diversity and specificity patterns of apicomplexans infecting reptiles from the Socotra Archipelago

A new endemic species of Hemidactylus (Squamata: Gekkonidae) from São Nicolau Island, Cabo Verde

Combining molecular and landscape tools for targeting evolutionary processes in reserve design: An approach for islands

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