Article (Scientific journals)
Buccal venom gland associates with increased of diversification rate in the fang blenny fish Meiacanthus (Blenniidae; Teleostei)
Liu, Shang-Yin Vanson; Frederich, Bruno; Lavoué, Sébastien et al.
2018In Molecular Phylogenetics and Evolution, 125, p. 138-146
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Keywords :
Macroevolution; Innovation; coral reef fishes; BAMM; diversification; disparification; size evolution; blennies
Abstract :
[en] At the macroevolutionary level, many mechanisms have been proposed to explain explosive species diversifi- cation. Among them morphological and/or physiological novelty is considered to have a great impact on the tempo and the mode of diversification. Meiacanthus is a genus of Blenniidae possessing a unique buccal venom gland at the base of an elongated canine tooth. This unusual trait has been hypothesized to aid escape from predation and thus potentially play an important role in their pattern of diversification. Here, we produce the first time-calibrated phylogeny of Blenniidae and we test the impact of two morphological novelties on their diversification, i.e. the presence of swim bladder and buccal venom gland, using various comparative methods. We found an increase in the tempo of lineage diversification at the root of the Meiacanthus clade, associated with the evolution of the buccal venom gland, but not the swim bladder. Neither morphological novelty was asso- ciated with the pattern of size disparification in blennies. Our results support the hypothesis that the buccal venom gland has contributed to the explosive diversification of Meiacanthus, but further analyses are needed to fully understand the factors sustaining this burst of speciation.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Zoology
Aquatic sciences & oceanology
Author, co-author :
Liu, Shang-Yin Vanson 
Frederich, Bruno   ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Lavoué, Sébastien
Chang, Jonathan
Erdmann, Mark V.
Mahardika, Gusti Ngurah
Barber, Paul H.
 These authors have contributed equally to this work.
Language :
English
Title :
Buccal venom gland associates with increased of diversification rate in the fang blenny fish Meiacanthus (Blenniidae; Teleostei)
Publication date :
April 2018
Journal title :
Molecular Phylogenetics and Evolution
ISSN :
1055-7903
eISSN :
1095-9513
Publisher :
Elsevier, Atlanta, United States
Volume :
125
Pages :
138-146
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Ministry of Science and Technology of Taiwan
Available on ORBi :
since 06 April 2018

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