Signatures of Divergence, Invasiveness, and Terrestrialization Revealed by Four Apple Snail Genomes

The family Ampullariidae includes both aquatic and amphibious apple snails. They are an emerging model for evolutionary studies due to the high diversity, ancient history, and wide geographical distribution. Insight into drivers of ampullariid evolution is hampered, however, by the lack of genomic r...

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Bibliographic Details
Published in:Molecular biology and evolution 2019-07, Vol.36 (7), p.1507-1520
Main Authors: Sun, Jin, Mu, Huawei, Ip, Jack C H, Li, Runsheng, Xu, Ting, Accorsi, Alice, Sánchez Alvarado, Alejandro, Ross, Eric, Lan, Yi, Sun, Yanan, Castro-Vazquez, Alfredo, Vega, Israel A, Heras, Horacio, Ituarte, Santiago, Van Bocxlaer, Bert, Hayes, Kenneth A, Cowie, Robert H, Zhao, Zhongying, Zhang, Yu, Qian, Pei-Yuan, Qiu, Jian-Wen
Format: Article
Language:English
Subjects:
Adaptation, Biological
Animal biology
Animal genetics
Animals
Discoveries
Genes, Homeobox
Genetics
Genome
Introduced Species
Invertebrate Zoology
Karyotype
Life Sciences
Multigene Family
Oviposition
Phylogeny
Snails - genetics
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Summary:The family Ampullariidae includes both aquatic and amphibious apple snails. They are an emerging model for evolutionary studies due to the high diversity, ancient history, and wide geographical distribution. Insight into drivers of ampullariid evolution is hampered, however, by the lack of genomic resources. Here, we report the genomes of four ampullariids spanning the Old World (Lanistes nyassanus) and New World (Pomacea canaliculata, P. maculata, and Marisa cornuarietis) clades. The ampullariid genomes have conserved ancient bilaterial karyotype features and a novel Hox gene cluster rearrangement, making them valuable in comparative genomic studies. They have expanded gene families related to environmental sensing and cellulose digestion, which may have facilitated some ampullarids to become notorious invasive pests. In the amphibious Pomacea, novel acquisition of an egg neurotoxin and a protein for making the calcareous eggshell may have been key adaptations enabling their transition from underwater to terrestrial egg deposition.
ISSN:0737-4038
1537-1719
DOI:10.1093/molbev/msz084