Global phylogeography of the deep-sea pelagic chaetognath Eukrohnia hamata

Miyamoto, Hiroomi; Machida, Ryuji J.; Nishida, Shuhei

doi:10.1016/j.pocean.2012.06.003

Cited by 19 publications

(31 citation statements)

References 38 publications

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“…Phylogeographic studies reveal that many cosmopolitan taxa are composed of multiple cryptic species (138,139), including some that are sympatric over part of their ranges (140). Populations of these cosmopolitan species are subdivided in two ways concordant with the BGCP framework: (i) by continental land masses separating ocean basins, and (ii) by habitat discontinuities in the equatorial region between subtropical gyres in the northern and southern hemispheres (140)(141)(142).…”

Section: Taxon-specific Patternsmentioning

confidence: 99%

Comparative phylogeography of the ocean planet

Bowen

Gaither

DiBattista

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

212

198

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Understanding how geography, oceanography, and climate have ultimately shaped marine biodiversity requires aligning the distributions of genetic diversity across multiple taxa. Here, we examine phylogeographic partitions in the sea against a backdrop of biogeographic provinces defined by taxonomy, endemism, and species composition. The taxonomic identities used to define biogeographic provinces are routinely accompanied by diagnostic genetic differences between sister species, indicating interspecific concordance between biogeography and phylogeography. In cases where individual species are distributed across two or more biogeographic provinces, shifts in genotype frequencies often align with biogeographic boundaries, providing intraspecific concordance between biogeography and phylogeography. Here, we provide examples of comparative phylogeography from (i) tropical seas that host the highest marine biodiversity, (ii) temperate seas with high productivity but volatile coastlines, (iii) migratory marine fauna, and (iv) plankton that are the most abundant eukaryotes on earth. Tropical and temperate zones both show impacts of glacial cycles, the former primarily through changing sea levels, and the latter through coastal habitat disruption. The general concordance between biogeography and phylogeography indicates that the population-level genetic divergences observed between provinces are a starting point for macroevolutionary divergences between species. However, isolation between provinces does not account for all marine biodiversity; the remainder arises through alternative pathways, such as ecological speciation and parapatric (semiisolated) divergences within provinces and biodiversity hotspots.biogeography | coral reefs | evolution | marine biodiversity | speciation P hylogeography has roots in biogeography, wherein geographic provinces are identified by concordant shifts in species composition. If the partitions defined by taxonomy are regarded as first-order approximations of evolutionary genetic separations, then continuity between biogeography and phylogeography is apparent. Marine biogeography, the study of species' distributions and evolutionary processes in the sea, began in the mid19th century based on taxonomic distinctions. Dana (1) divided the surface waters of the world into several temperature zones based on the distributions of corals and crustaceans. Woodward (2) identified a series of marine provinces based on the distributions of mollusks. Forbes (3) made three enduring observations: (i) each biogeographic province is a center of origin for new species, (ii) these new species tend to migrate outward from the center of origin, and (iii) provinces, like species, must be traced back to their historical origins to be understood. These three fundamental contributions appeared in the same decade in which Darwin and Wallace (4) and Darwin (5) identified geography and natural selection as agents of evolutionary change.It is remarkable that five essential publications in the 1850s (1-5) set the stage ...

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Section: Taxon-specific Patternsmentioning

confidence: 99%

Comparative phylogeography of the ocean planet

Bowen

Gaither

DiBattista

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

212

198

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“…Recent population genetic studies, however, have uncovered limited gene flow among populations across the distributional range in a number of oceanic species (e.g., Unal and Bucklin, 2010;Norton and Goetze, 2013;Andrews et al, 2014). In addition, divergent genetic lineages have been observed both in allopatry and in sympatry within a single nominal species for several planktonic groups, including species of chaetognaths (Peijnenburg et al, 2004(Peijnenburg et al, , 2006Miyamoto et al, 2010Miyamoto et al, , 2012, copepods (Bucklin et al, 1996;Goetze, 2003Goetze, , 2005Goetze, , 2010Blanco-Bercial et al 2014;Cornils and Held, 2014), euphausiids (Bucklin et al, 2007), molluscs (Jennings et al, 2010Burridge et al, 2015), and cnidarians (Schroth et al, 2002). These divergent lineages demonstrate that the genetic structure of cosmopolitan zooplankton species is more complex than previously thought in many cases, with several nominal species now known to consist of a mosaic of distinct evolutionary lineages.…”

Section: Introductionmentioning

confidence: 99%

Extensive genetic diversity and endemism across the global range of the oceanic copepod Pleuromamma abdominalis

Hirai

Tsuda

Goetze

2015

Progress in Oceanography

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Many oceanic zooplankton species have been described as cosmopolitan in distribution; however, recent molecular work has detected species complexity with highly divergent genetic lineages within several of these taxa. To further resolve the species complexity within these ecologically-important and widespread species, we performed both molecular and morphological analyses of the oceanic copepod Pleuromamma abdominalis using a comprehensive collection of material from 944 individuals collected at 46 sites across the global ocean. Phylogenetic analyses of mitochondrial cytochrome oxidase subunit I (mtCOI) sequences detected eighteen divergent evolutionary lineages within P. abdominalis, with an additional four singleton specimens that were also genetically divergent. Two phylogenetically distinct groups, PLAB1 and PLAB2, were supported by concordant sequence variation in the nuclear large subunit ribosomal RNA gene (nLSU). Within PLAB1, two mtCOI clades, 1a-1 and 1b-1 were observed, and each clade contained geographically distinct sub-clades 1a-2 and 1b-2. PLAB2 was composed of sixteen well-supported mtCOI clades (2a-2p) as well as four singletons. High genetic divergence among the mtCOI lineages within both PLAB1 and PLAB2, ranging between 9.2-11.2% and 4.3-18.9% K2P distances respectively, suggests the presence of additional species within these groups. Significant differences were observed in the presence and shape of antennule spines of adult females between sympatric clades with genetic distances greater than 5.7-7.0% (K2P). The biogeographic distributions of mtCOI clades indicated greater specialization to particular oceanographic provinces than observed in the nominal species P. abdominalis, with mtCOI clades ranging from antitropical in subtropical waters of all three ocean basins (Atlantic, Pacific and Indian; clade 1b-1 and 2a) to taxa that are endemic to a particular ocean region, for example restricted to equatorial waters of the Atlantic Ocean (clade 1b-2 and 2b). We hypothesize that many of these mtCOI clades are likely distinct, and currently undescribed species. The well-known high dominance of P. abdominalis across a range of pelagic habitats may occur as a spatial composite of genetically-distinct species with more restricted distributions and greater 3 ecological specialization to particular marine habitats than was previously recognized.

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“…Thus, it has 36 been assumed that allopatric speciation may be less important in pelagic species than 37 sympatric or parapatric speciation (Norris, 2000). During the past years molecular studies 38 have revealed that many supposedly widespread species are mosaics of several cryptic or 39 pseudocryptic species (Andrews et al, 2014; Burridge et al, 2015; Cornils and Held, 2014; 40 Darling et al, 2007;Halbert et al, 2013; Hunt et al, 2010;Miyamoto et al, 2012). The mode …”

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confidence: 99%

Global phylogeography of Oithona similis s.l. (Crustacea, Copepoda, Oithonidae) – A cosmopolitan plankton species or a complex of cryptic lineages?

Cornils

Wend-Heckmann

Held

2017

Molecular Phylogenetics and Evolution

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14Traditionally, many small-sized copepod species are considered to be widespread, bipolar or 15 cosmopolitan. However, these large-scale distribution patterns need to be re-examined in 16 view of increasing evidence of cryptic and pseudo-cryptic speciation in pelagic copepods. 17Here, we present a phylogeographic study of Oithona similis s.l. populations from the Arctic Introduction 34The existence of widespread or cosmopolitan species is widely accepted in marine plankton 35 due to the lack of apparent geographic barriers and high dispersal potentials. Thus, it has 36 been assumed that allopatric speciation may be less important in pelagic species than 37 sympatric or parapatric speciation (Norris, 2000). During the past years molecular studies 38 have revealed that many supposedly widespread species are mosaics of several cryptic or 39 pseudocryptic species (Andrews et al., 2014; Burridge et al., 2015; Cornils and Held, 2014; 40 Darling et al., 2007;Halbert et al., 2013; Hunt et al., 2010;Miyamoto et al., 2012). The mode 49The cyclopoid copepod Oithona similis s.l. Claus, 1866 is accepted as a cosmopolitan 50 species, presumably occurring in all oceanic zones (Razouls et al., 2016) and presumably 51 the most abundant copepod species worldwide, although its importance has long been 52 overlooked due to the use of too coarse mesh sizes for plankton hauls (Gallienne and 53 Robins, 2001;Turner, 2004). Previous investigations have stressed that O. similis s.l. is a 54 prominent link between the microbial loop and higher trophic levels (Atkinson, 1995; 55 Castellani et al., 2005; Zamora-Terol et al., 2013). Its preferred habitats are polar and 56 temperate epipelagic marine waters where it is often more abundant than calanoid copepods 57 (Atkinson, 1998; Hopcroft et al., 2010; Pinkerton et al., 2010;Sabatini and Kiørboe, 1994; 58 Zamora-Terol et al., 2014). Furthermore, it has also been found in subtropical and tropical 59 waters (Cepeda et al., 2012; Nishida, 1985), although some of the reported findings seem 60 questionable (Nishida, 1985). Morphological differences have not been detected between O. 61 similis s.l. populations across latitudes, except for morphometric differences in the Northern 62 hemisphere,where prosome length and cephalon shape differed significantly among 63 populations from North Atlantic and Arctic water masses (Shuvalov, 1972). He suspected 64 that O. similis s.l. is "a polytypic species which comprises various subspecies or intraspecific 65 forms and groups with distinct ecological requirements regarding temperature throughout the 66 life cycle." A first attempt to investigate the population structure of O. similis s.l., using the 67 nuclear molecular marker 28S, revealed low levels of intraspecific variety between North and 68 South Atlantic populations (Cepeda et al., 2012). However, the polar habitats of O. similis s.l. 69were not included in that study. 751838, Pseudocalanus spp. or Triconia borealis Sars, 1918 (Ashjian et al., 2003 Hunt et al., 76 2014; Kos...

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Global phylogeography of the deep-sea pelagic chaetognath Eukrohnia hamata

Cited by 19 publications

References 38 publications

Comparative phylogeography of the ocean planet

Comparative phylogeography of the ocean planet

Extensive genetic diversity and endemism across the global range of the oceanic copepod Pleuromamma abdominalis

Global phylogeography of Oithona similis s.l. (Crustacea, Copepoda, Oithonidae) – A cosmopolitan plankton species or a complex of cryptic lineages?

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