A new divergent lineage of Daphnia (Cladocera: Anomopoda) and its morphological and genetical differentiation from Daphnia curvirostris Eylmann, 1887

Ishida, Seiji; Kotov, Alexey A.; Taylor, Derek J.

doi:10.1111/j.1096-3642.2006.00214.x

Cited by 466 publications

(49 citation statements)

References 36 publications

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“…As previous studies showed that D. cucullata and D. longispina were closely related species to D. rosea s.l. in the mitochondrial ND2 phylogeny [35], we used these species as outgroups [see Additional file 4]. All samples were preserved in absolute ethanol at room temperature, or frozen at -80°C.…”

Section: Methodsmentioning

confidence: 99%

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Mature habitats associated with genetic divergence despite strong dispersal ability in an arthropod

Ishida

Taylor

2007

BMC Evol Biol

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BackgroundPopulations may be bound by contemporary gene flow, selective sweeps, and extinction-recolonization processes. Indeed, existing molecular estimates indicate that species with low levels of gene flow are rare. However, strong priority effects and local selective regimes may hinder gene flow (despite dispersal) sending populations on independent evolutionary trajectories. In this scenario (the monopolization hypothesis), population differentiation will increase with time and genealogical evidence should yield ample private haplotypes. Cyclical parthenogens (e.g. rotifers and cladocerans such as Daphnia) have an increased capacity for rapid local adaptation and priority effects because sexual reproduction is followed by multiple generations of clonal selection and massive egg bank formation. We aimed to better understand the history of population differentiation and ongoing gene flow in Daphnia rosea s.l., by comparing population and regional divergences in mature unglaciated areas and younger previously glaciated areas. We also examined the timing and paths of colonization of previously-glaciated areas to assess the dispersal limitations of D. rosea s.l. We used DNA sequence variation (84 populations and >400 individuals) at the mitochondrial ND2 and nuclear HSP90 loci from Holarctic populations for our genetic analyses.ResultsThe genetic evidence indicated pronounced historical structure. Holarctic mtDNA phylogenies of D. rosea s.l. revealed three geographically restricted and divergent clades: European, Siberian and Japanese/American. The Japanese/American clade showed marked population genetic structure (FST > 0.8) that was weakly associated with geographic distance, and a high proportion of private haplotypes. Populations from older unglaciated habitats (i.e., Japan) showed higher DNA sequence divergences than populations from presumed younger habitats (i.e. non-Beringian North America) with nDNA and with mtDNA. Mismatch analyses of mtDNA and nDNA were consistent with a single rapid post-glacial expansion of D. rosea that covered most of the New World.ConclusionOur evidence agrees with negligible gene flow after founding, and the accumulation of genetic divergence with habitat age. Existing direct evidence and our mismatch analyses indicate that the pronounced population differentiation is unlikely to be due to dispersal limitation. Instead, priority effects and local selection regimes may play a role in limiting gene flow. The results challenge the notion that lacustrine populations of cladocerans are generally unified by contemporary gene flow.

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Section: Methodsmentioning

confidence: 99%

“…A c . 1000 bp fragment of the mitochondrial protein-coding NADH-2 (ND2) gene was amplified using the primers MetF3 (5'-GTT CAT GCC CCA TTT ATA GGT TA-3') and TrpR (5'-GAA GGT TTT TAG TTT AGT TAA CTT AAA ATT CT-3') [35]. A c .…”

Section: Methodsmentioning

confidence: 99%

Mature habitats associated with genetic divergence despite strong dispersal ability in an arthropod

Ishida

Taylor

2007

BMC Evol Biol

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“…However, genetic studies have demonstrated the presence of specimens belonging to a "non-European" species similar to D. longispina in Japan, but have not revealed specimens of D. longispina s. str. in Japan (Ishida et al 2006;Ishida 2007). In Japan, specimens attributed to D. schmackeri probably are D. dentifera Forbes, 1893, a common pelagic species (Ishida 2007 Comments.…”

Section: Daphnia {Daphnia) Curvirostris Insulana Richard 1895mentioning

confidence: 99%

The taxonomic research of Jules Richard on Cladocera (Crustacea: Branchiopoda) and his collection at the National Museum of Natural History, USA

Kotov¹,

Ferrari²

2010

Zootaxa

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Jules Richard (1863Richard ( -1945 contributed significantly to cladoceran taxonomy before he became Director of the Musee Oceanographique de Monaco and assistant to Prince Albert I-er de Monaco. His collection, including slides and samples preserved in ethanol, was purchased by E. A. Birge, subsequently incorporated into the collection of David G. Frey, and later gifted to the National Museum of Natural History, Smithsonian Institution. A list of publications of Richard about cladocerans is presented, as well a list of all new taxa described by him (three genera and 37 taxa of species rank), with information about type localities, synonymies and taxonomic comments. Lectotypes and in some cases paralectotypes are selected for Daphnia (Ctenodaphnia) bolivari

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“…Atomic P:C ratios of HIP and LOP algae were measured by the method described in Iwabuchi and Urabe (submitted ), and were 7.9 3 10 À3 and 1.2 3 10 À3 , respectively. D. tanakai (Ishida et al 2006) was collected from a marsh in Mt. Zao, Miyagi, Japan.…”

Section: Algal Food and Animalsmentioning

confidence: 99%

Competitive outcomes between herbivorous consumers can be predicted from their stoichiometric demands

Iwabuchi

Urabe

2012

Ecosphere

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Citation: Iwabuchi, T., and J. Urabe. 2012. Competitive outcomes between herbivorous consumers can be predicted from their stoichiometric demands. Ecosphere 3(1):7. http://dx.doi.org/10.1890/ES11-00253.1Abstract. Exploitative competition for food resources is one of the crucial biological interactions in nature. However, few studies have experimentally tested if competitive ability of consumer species changes depending on elemental contents of the food, although it has been suggested by the theories of resource ratio for competition and ecological stoichiometry. To verify if competitive superiority actually changes according to elemental contents of the food, competition experiments were conducted using high and low P algal food and three Daphnia species (D. galeata, D. pulicaria, and D. tanakai ) with different threshold levels of carbon (TFC) and phosphorus (TFP) necessary for individual growth. Since the TFCs of D. tanakai and D. pulicaria were similar to each other but lower than that of D. galeata, we specifically predicted that when fed high P food (i.e., limited by C), D. tanakai and D. pulicaria would be competitively equal to each other but superior to D. galeata. We also predicted from their TFPs that when fed low P food, D. pulicaria would outcompete D. tanakai and D. galeata, while neither of the latter two would be competitively superior to the other. The results showed that when one of the two competitors was predicted to be competitively superior, the food level under competition was similar to the TFC (or TFP) of the superior species but lower than that of the other inferior species, and that the biomass of the former was much less affected by the competition. Also, when the two competing species were predicted to be competitively equal, the food levels under competition were generally similar to the TFC (or TFP) of both species and their biomasses decreased by the same magnitude. The results thus accorded well with the predictions from the TFC and TFP, and indicate that competitive superiority between the same two Daphnia species changes depending on P:C ratio of algal food. This study provides firm evidence for the first time that resource ratio theory can be applied to competition between animal consumers for essential substances packaged within a single food resource.

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A new divergent lineage of Daphnia (Cladocera: Anomopoda) and its morphological and genetical differentiation from Daphnia curvirostris Eylmann, 1887

Cited by 466 publications

References 36 publications

Mature habitats associated with genetic divergence despite strong dispersal ability in an arthropod

Mature habitats associated with genetic divergence despite strong dispersal ability in an arthropod

The taxonomic research of Jules Richard on Cladocera (Crustacea: Branchiopoda) and his collection at the National Museum of Natural History, USA

Competitive outcomes between herbivorous consumers can be predicted from their stoichiometric demands

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