Vicariance and cryptic diversity revealed by molecular phylogenetic analyses of estuarine Gammarus species (Crustacea: Amphipoda) due to formation of the Labrador Current

被引:1
|
作者
Smith, Liyah [1 ,2 ]
Long, Richard A. [1 ,2 ]
Cannizzaro, Andrew G. [3 ]
Sawicki, Thomas R. [1 ,2 ]
机构
[1] Florida A&M Univ FAMU, Dept Biol Sci, Tallahassee, FL 32307 USA
[2] FAMU, NOAA Ctr Coastal & Marine Ecosyst, Tallahassee, FL 32307 USA
[3] Miami Univ, Dept Biol, Oxford, OH 45056 USA
基金
美国海洋和大气管理局;
关键词
biogeography; cryptic species; Gammaridae; Gammarus tigrinus; invasive species; Labrador Current; phylogenetics; vicariance; TIGRINUS SEXTON; NORTH; GENUS; DNA; MITOCHONDRIAL; BIOGEOGRAPHY; PERFORMANCE; DIVERGENCE; DISPERSAL; SELECTION;
D O I
10.1071/IS24003
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The metapopulation of the estuarine species Gammarus tigrinus along the east coast of the United States has been hypothesised to represent two cryptic species divided biogeographically off the coast of North Carolina, USA. This divergence has been attributed to a strong temperature gradient created by the formation of the cold Labrador Current c. 3.0 million years ago. In addition, the northern phylogeographic clade of G. tigrinus has been demonstrated to be invasive in estuarine habitats across a large portion of northern Europe. Recent collections of G. tigrinus from Florida and Maryland, USA, allow for new approaches to test this hypothesis. Using the nuclear 18S and 28S rRNA, and mitochondrial 16S rRNA and cytochrome c oxidase subunit I genes, species delimitation models provide support that the genetic divergence of the northern and southern clades is equivalent to species level. In addition, molecular clock data demonstrate that this phylogeographic divergence coincides with the formation of the Labrador Current. Furthermore, the collections of G. daiberi from Florida, a species with biogeographical and ecological characteristics similar to those of G. tigrinus, provide independent support for the hypothesis. The potential for invasive species to be cryptic highlights the need for accurate identification of taxa to ensure that appropriate biogeographical assessment of potential source populations and mechanisms of dispersal can be made.
引用
收藏
页数:13
相关论文
共 6 条
  • [1] Cryptic species of pondweeds (Potamogetonaceae) at an intercontinental scale revealed by molecular phylogenetic analyses
    Fehrer, Judith
    Iida, Satoko
    Kaplan, Zdenek
    TAXON, 2022, 71 (03) : 531 - 551
  • [2] A new species rises from beneath Florida: molecular phylogenetic analyses reveal cryptic diversity among the metapopulation of Crangonyx hobbsi Shoemaker, 1941 (Amphipoda: Crangonyctidae)
    Cannizzaro, Andrew G.
    Balding, Donna
    Lazo-Wasem, Eric A.
    Sawicki, Thomas R.
    ORGANISMS DIVERSITY & EVOLUTION, 2020, 20 (03) : 387 - 404
  • [3] A new species rises from beneath Florida: molecular phylogenetic analyses reveal cryptic diversity among the metapopulation of Crangonyx hobbsi Shoemaker, 1941 (Amphipoda: Crangonyctidae)
    Andrew G. Cannizzaro
    Donna Balding
    Eric A. Lazo-Wasem
    Thomas R. Sawicki
    Organisms Diversity & Evolution, 2020, 20 : 387 - 404
  • [4] The enigmatic groundwater amphipod Awacaris kawasawai revisited: synonymisation of the genus Sternomoera, with molecular phylogenetic analyses of Awacaris and Sternomoera species (Crustacea : Amphipoda : Pontogeneiidae)
    Tomikawa, Ko
    Kyono, Masaki
    Kuribayashi, Keiko
    Nakano, Takafumi
    INVERTEBRATE SYSTEMATICS, 2017, 31 (02) : 125 - 140
  • [5] Molecular phylogenetic analyses reveal the importance of taxon sampling in cryptic diversity: Liolaemus nigroviridis and L. monticola (Liolaeminae) as focal species
    Fernando Torres-Pérez
    Dusan Boric-Bargetto
    Evelyn Rodríguez-Valenzuela
    Constanza Escobar
    R. Eduardo Palma
    Revista Chilena de Historia Natural, 90
  • [6] Molecular phylogenetic analyses reveal the importance of taxon sampling in cryptic diversity: Liolaemus nigroviridis and L-monticola (Liolaeminae) as focal species
    Torres-Perez, Fernando
    Boric-Bargetto, Dusan
    Rodriguez-Valenzuela, Evelyn
    Escobar, Constanza
    Eduardo Palma, R.
    REVISTA CHILENA DE HISTORIA NATURAL, 2017, 90