Does Haldane's rule speciation within mimetic Poison frogs?
Lorioux-Chevalier, U.; Chouteau, M.; Roland, A.-B.
Show abstract
To explain how populations with distinct warning signals coexist in close parapatry, we experimentally assessed intrinsic mechanisms acting as reproductive barriers within three Ranitomeya poison-frog species. For all species, assortative mating did not occur, nor did a survival disadvantage for inter-population hybrids. However, in Ranitomeya fantastica, these hybrids of the male sex are sterile, an outcome predicted by Haldanes rule. Our results suggest a possible XY sex determinism in R. fantastica, and show that this process is associated with an extraordinary diversity, leading to speciation. Graphical Abstract O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=113 SRC="FIGDIR/small/586569v1_ufig1.gif" ALT="Figure 1"> View larger version (42K): org.highwire.dtl.DTLVardef@9cd116org.highwire.dtl.DTLVardef@16303dforg.highwire.dtl.DTLVardef@19339acorg.highwire.dtl.DTLVardef@af7718_HPS_FORMAT_FIGEXP M_FIG C_FIG
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