Island gigantism is a documented evolutionary phenomenon in plants and animals
the verdict
SUPPORTED
the evidence backs this
confidence 92/100
Island gigantism is a well-documented evolutionary and ecological phenomenon where small mainland species evolve significantly larger body sizes when isolated on islands.
Evidence for · 9
Body size evolution in insular vertebrates: generality of the island rule
2005 · cited by 501
Supports the island rule, confirming the general trend of gigantism in smaller species across insular vertebrates.
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More for · 8
The evolution of insular woodiness
2022 · cited by 58
Documents insular woodiness and gigantism as notable evolutionary traits in island plant species.
Dwarfism and gigantism drive human-mediated extinctions on islands
2023 · cited by 51
Examines morphologically divergent giant and dwarf species resulting from island evolution.
Genetic data from the extinct giant rat from Tenerife (Canary Islands) points to a recent divergence from mainland relatives
2021 · cited by 7
Shows that Tenerife giant rats evolved rapidly from mainland relatives via island gigantism.
Giant mice on small islands: biogeographic and ecological differences contribute to gigantism in island populations.
2025 · cited by 3
Provides evidence of insular gigantism in island mice compared to mainland populations.
The island rule-like patterns of plant size variation in a young land-bridge archipelago: Roles of environmental circumstance and biotic competition.
2025 · cited by 0
Finds island rule-like plant size variations, including gigantism, across an archipelago.
A PHYLOGENETIC ANALYSIS OF BODY SIZE EVOLUTION AND BIOGEOGRAPHY IN CHUCKWALLAS (SAUROMALUS) AND OTHER IGUANINES.
1997 · cited by 0
Demonstrates that isolated island chuckwallas evolved significantly larger body sizes than mainland species.
Rapid and repeated origin of insular gigantism and dwarfism in Australian tiger snakes.
2005 · cited by 0
Documents rapid and repeated evolution of island gigantism in Australian tiger snakes.
The island rule explains consistent patterns of body size evolution in terrestrial vertebrates.
2021 · cited by 0
Confirms through a phylogenetic meta-analysis that island rule body size shifts are widespread in terrestrial vertebrates.