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Description of Xiphinema parachambersi sp. n. (Nematoda: Longidoridae) from Imported Ornamental Plants in Japan with a Key to Xiphinema Species in Group 1 Cover

Description of Xiphinema parachambersi sp. n. (Nematoda: Longidoridae) from Imported Ornamental Plants in Japan with a Key to Xiphinema Species in Group 1

Open Access
|Oct 2018

Figures & Tables

Fig. 1

Line drawings of Xiphinema parachamberi n. sp. female. A: Esophageal region; B: Esophageal bulb; C: Entire body; D: Genital branch; E: Tail region (Scale bars: A, E = 40; B, C=20, D=100 μm).
Line drawings of Xiphinema parachamberi n. sp. female. A: Esophageal region; B: Esophageal bulb; C: Entire body; D: Genital branch; E: Tail region (Scale bars: A, E = 40; B, C=20, D=100 μm).

Fig. 2

Light photomicrographs of Xiphinema parachamberi n. sp. female. A: Anterior region, arrow showing position of vulva (v); B: Lip region; C-E: Esophageal bulb (arrows showing different position of gland nuclei); F: Esophago-intestinal junction arrows pointing the base of pharyngeal bulb and cardia. G: Vulval region; H, I: Gonad; J: Female tail (arrows showing position of (a) anus and caudal pores); K, L: Female tail (arrows showing position of (a) anus) (Scale bars: A, L = 10 μm).
Light photomicrographs of Xiphinema parachamberi n. sp. female. A: Anterior region, arrow showing position of vulva (v); B: Lip region; C-E: Esophageal bulb (arrows showing different position of gland nuclei); F: Esophago-intestinal junction arrows pointing the base of pharyngeal bulb and cardia. G: Vulval region; H, I: Gonad; J: Female tail (arrows showing position of (a) anus and caudal pores); K, L: Female tail (arrows showing position of (a) anus) (Scale bars: A, L = 10 μm).

Fig. 3

Light photomicrographs of cardia of Xiphinema parachamberi n. sp. Scale bars: A–C=20 μm).
Light photomicrographs of cardia of Xiphinema parachamberi n. sp. Scale bars: A–C=20 μm).

Fig. 4

Light photomicrographs of Xiphinema parachamberi n. sp. juveniles and female. A–D: Anterior regions of J2/J3, J3/J4 and female; E–H: Tail regions of J2/J3, J3/J4 and female (arrows showing position of anus (a)) (Scale bars: A–L = 10 μm).
Light photomicrographs of Xiphinema parachamberi n. sp. juveniles and female. A–D: Anterior regions of J2/J3, J3/J4 and female; E–H: Tail regions of J2/J3, J3/J4 and female (arrows showing position of anus (a)) (Scale bars: A–L = 10 μm).

Fig. 5

Relationship of body length to length of functional and replacement odontostyle (Ost and rOst, respectively); length in two juvenile developmental stages and mature females of Xiphinema parachambersi n. sp.
Relationship of body length to length of functional and replacement odontostyle (Ost and rOst, respectively); length in two juvenile developmental stages and mature females of Xiphinema parachambersi n. sp.

Fig. 6

Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from 18S under GTR+I+G model (-lnL=3332.0762; AIC=6682.1523; freqA=0.1821; freqC=0.209; freqG=0.3285; freqT=0.2804; R(a)=1.4406; R(b)=5.2581; R(c)=2.6656; R(d)=0.7382; R(e)=5.2581; R(f)=1; Pinva=0.2316; Shape=0.4544). Posterior probability values exceeding 50% are given on appropriate clades.
Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from 18S under GTR+I+G model (-lnL=3332.0762; AIC=6682.1523; freqA=0.1821; freqC=0.209; freqG=0.3285; freqT=0.2804; R(a)=1.4406; R(b)=5.2581; R(c)=2.6656; R(d)=0.7382; R(e)=5.2581; R(f)=1; Pinva=0.2316; Shape=0.4544). Posterior probability values exceeding 50% are given on appropriate clades.

Fig. 7

Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from 28S D2/D3 under GTR+I+G model (-lnL=10912.0693; AIC=21844.1387; freqA=0.2463; freqC=0.2277; freqG=0.2969; freqT=0.2291; R(a)=0.9039; R(b)=2.4909; R(c)=2.4092; R(d)=0.4557; R(e)=3.9274; R(f)=1; Pinva=0.3185; Shape=0.782). Posterior probability values exceeding 50% are given on appropriate clades.
Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from 28S D2/D3 under GTR+I+G model (-lnL=10912.0693; AIC=21844.1387; freqA=0.2463; freqC=0.2277; freqG=0.2969; freqT=0.2291; R(a)=0.9039; R(b)=2.4909; R(c)=2.4092; R(d)=0.4557; R(e)=3.9274; R(f)=1; Pinva=0.3185; Shape=0.782). Posterior probability values exceeding 50% are given on appropriate clades.

Fig. 8

Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from ITS1 under GTR+I+G model (-lnL=19846.0566; AIC=39712.1133; freqA=0.2723; freqC=0.2059; freqG=0.2672; freqT=0.2547; R(a)=0.851; R(b)=3.6772; R(c)=1.3471; R(d)=0.6487; R(e)=5.209; R(f)=1; Pinva=0.0808; Shape=1.2786). Posterior probability values exceeding 50% are given on appropriate clades.
Bayesian consensus tree of Xiphinema parachamberi n. sp. inferred from ITS1 under GTR+I+G model (-lnL=19846.0566; AIC=39712.1133; freqA=0.2723; freqC=0.2059; freqG=0.2672; freqT=0.2547; R(a)=0.851; R(b)=3.6772; R(c)=1.3471; R(d)=0.6487; R(e)=5.209; R(f)=1; Pinva=0.0808; Shape=1.2786). Posterior probability values exceeding 50% are given on appropriate clades.

Morphometrics data for Xiphinema parachambersi n_ sp_ All measurements are in µm and in the form of mean ± s_d_ (range)_

HolotypeParatype
Character/ratiosFemaleFemaleJ2 or J3J3 or J4
n115511
L1,9182008.9±78.7 (1,830.0-2,109.0)1,127.0±52.6 (1,046.0-1,210.0)1,419.6±38.5 (1,349.0-1,587.0)
a45.647.2±2.3 (44.2-53.1)42.7±3.6 (36.7-46.3)48.3±3.5 (41.60-55.5)
b5.45.5±0.2 (5.1-6.0)3.9±0.5 (3.0-4.4)4.7±0.3 (4.2-5.0)
c18.118.0±1.0 (16.1-19.6)11.8±1.0 (10.5-12.8)13.2±0.6 (12.0-15.1)
c’4.44.9±0.4 (4.2-6.0)6.4±0.3 (5.9-6.8)5.9±0.4 (5.2-6.9)
V2726.2±0.6 (25.2-27.7)
Lip diam.1010.3±0.6 (8.8-11.2)8.6±0.3 (8.2-9.0)8.9±0.5 (8.2-10.1)
Lip height54.1±0.7 (2.9-5.2)3.6±0.4 (3.0-4.2)3.8±0.4 (3.1-4.7)
Odontostyle115110.4±2.6 (105-115.6)71.0±3.8 (64.4-75.6)85.5±2.0 (79.5-90.0)
Odontophore6765.5±1.6 (61.0-68.1)46.1±1.4 (44.5-47.8)53.8±1.0 (52.2-54.8)
Replacement odontostyle88.0±2.5 (85.0-92.0)107.0±7.9 (90.5-116.3)
Total stylet173176±2.9 (169.0-181.2)116.6±4.7 (109.0-120.5)140.0±2.2 (137.2-142.5)
Flanges width1010.4±0.7 (8.8-11.5)8.1±0.4 (7.7-8.7)9.0±0.6 (7.6-10.8)
Esophagus358366.6±10.6 (348.4-387.2)289.6±28.2 (272.2-345.6)311.4±14.7 (275.0-344.2)
Esophageal bulb length7881.5±2.1 (77.4-85.1)63.7±2.2 (60.1-66.1)70.4±3.0 (64.8-76.5)
Esophageal bulb diam.2424.5±1.1 (22.5-26.5)16.5±1.4 (14.1-17.9)18.6±0.6 (17.6-23.0)
Body diam.4242.7±2.0 (38.8-46.7)27.2±1.9 (24.3-29.8)29.6±1.5 (26.4-35.1)
Anterior genital branch length1110.6±1.3 (8.4-12.3)
G1%0.50.5±0.1 (0.4-0.6)
Posterior genital branch length240218.3±40.9 (119.2-292.1)
G2%8.910.7±1.9 (5.8-13.9)
Distance from anterior end to vulva522525.2±15.9 (493.0-548.3)
Anal body width.2423.1±1.5 (20.1-25.0)15.2±1.0 (14.0-16.4)18.7±0.7 (16.8-20.3)
Tail106112.2±6.3 (98.0-120.3)98.0±6.0 (88.0-104.0)109.0±1.4 (103.5-116.0)
Hyaline tail part4443.0±2.2 (39.4-47.2)19.3±1.2 (17.9-20.7)26.1±2.7 (20.2-32.0)
H%4138.5±2.4 (34.4-43.4)19.5±2.0 (17.5-23.1))23.8±2.9 (17.4-28.2)
Rectum3835.2±2.7 (30.4-40.8)20.0±4.5 (16.4-27.6)28.4±2.3 (23.1-30.8)

Sequences of nematode species used for the phylogenetic analyses_

Species18S28S D2-D3ITS
Xiphinema abrantinum -AY601625-
Xiphinema andalusiense --KX244924
Xiphinema aceri EU477381-EU477385
Xiphinema adenohytherum GU725084GU725075GU725063
Xiphinema baetica KC567149KC567168KC567157
KC567148-KC567156
Xiphinema bakeri AY283173KF292277KF292281
-KF292278AF511426
-KF292276-
-AY601623-
Xiphinema barense -KM199691KM199694
--KM199693
Xiphinema basiri -AY601629-
Xiphinema belmontense -KC567171KC567158
Xiphinema bernardi --EU375483
Xiphinema brasiliense AY297836AY601616-
-KP793050-
Xiphinema cadavalense --KX244932
Xiphinema castilloi -KF446655-
Xiphinema chambersi AY283174AY601617HM138503
HM138503KU680967HM191718
HM191718DQ299512KJ934160
KJ934157-KJ934157
KJ934160-AF511428
--KU764410
--KU764405
--KU764406
--KU764407
--KU764408
--KU764409
--KU764411
Xiphinema cohni -KC567173KC567159
Xiphinema costaricense -KX931057KX931069
Xiphinema coxi -AY601631-
Xiphinema coxi europaeum KC567152-KC567161
KC567153--
Xiphinema cretense -KJ802878KJ802895
Xiphinema dentatum -AY601627-
Xiphinema diversicaudatum EF538761JQ780365KF292282
JQ780349--
JQ780348--
JQ780347--
JQ780346--
Xiphinema ensiculiferum AY297825--
Xiphinema elongatum AY297824EF140790AY524971
KP407872-EF140789
Xiphinema gersoni KC567154KC567180-
Xiphinema globosum GU549476GU549474GU549475
Xiphinema granatum -JQ240273-
Xiphinema hangzhouense -MF538772MF538770
Xiphinema herakliense KM586356-KM586353
KM586357-KM586354
Xiphinema hispidum HM921368--
Xiphinema hispanum GU725083GU725074GU725061
--HM821367
Xiphinema hunaniense -KP793049AY579205
-EF188839-
Xiphinema ifacolum AY297826--
Xiphinema index EF207249HM921349HM921334
AY687997-AY430175
HM921342--
Xiphinema ingens --KM893399
--KJ9566387
Xiphinema insigne -AY601619AY553980
--AY563427
Xiphinema iranicum EU477384--
Xiphinema israeliae -KJ802886
Xiphinema italiae HM921343HM921351HM921335
FJ713154-HM921341
--AJ437029
Xiphinema japonica KY131241KY131240KY131244
-KU052864-
Xiphinema krugi AY297827KX931063DQ017154
AY297828-KX931070
Xiphinema longicaudatum AY297829--
Xiphinema lupini -HM921352-
-KC567183-
Xiphinema mazandaranense HQ658630--
Xiphinema macedonicum EU477383--
Xiphinema macroacanthum -HF546081HF546078
Xiphinema naturale -DQ299515-
Xiphinema nuragicum GU725078GU725070GU725056
GU725079-GU725057
GU725080--
GU725081--
Xiphinema parachambersi n. sp. MG786444 MG7866445 MG786442
Xiphinema paritaliae AY297831--
Xiphinema pseudocoxi --KX244939
Xiphinema pyrenaicum GU725085AY601626GU725060
-GU725073-
Xiphinema radicicola -AY601622-
Xiphinema savanicola -AY601620-
Xiphinema setariae -AY601621KX931075
--AY430179
--KX931077
Xiphinema sphaerocephalum GU725082GU725076GU725062
Xiphinema surinamense AY297833--
Xiphinema turcicum GU725086KC567185-
Xiphinema turdetanense KC567155KC567186KC567163
Xiphinema variegatum AY297834--
Xiphinema vulgare -DQ299514-
Xiphinema vuittenezi AY552979-HG329722
EF614267-AJ437028
Xiphinema zagrosense JN153100JN153101-
Xiphinema sp.AY297840-DQ364686
EF207250--
EU477382--
Xiphinema amercanum group
Xiphinema cf. americanum AM086679--
Xiphinema americanum -AY580056-
Xiphinema brevicollum -HM163209-
-AY601604-
-KP793051-
-AY601605-
Xiphinema bricolensis -AY601594-
-AY601596-
Xiphinema californicum -AY601592-
Xiphinema citricolum -DQ285668-
Xiphinema diffusum -AY601600-
Xiphinema duriense -JQ990032-
Xiphinema floridae -DQ299508-
Xiphinema georgianum -DQ299496-
Xiphinema incertum -JQ990031-
Xiphinema inaequale -HM163210-
Xiphinema laevistriatum -DQ299504-
Xiphinema lambertii -HM163211-
Xiphinema opisthohysterum -JQ990040-
Xiphinema pachtaicum -HM921393-
-HM921356-
Xiphinema pacificum -AY601590-
Xiphinema parabrevicolle -JQ990042-
Xiphinema parapachydemum -JQ990036-
Xiphinema rivesi -AY210845-
Xiphinema santos -AY601587-
Xiphinema simile AM086680KJ802889-
AM086681--
JQ780350--
Xiphinema tarjanense -DQ299511-
Xiphinema taylori -AY601602-
Xiphinema thornei -AY601595-
Xiphinema utahense -AY601598-
Xiphidorus yepesara yepesara AY297838--
Xiphidorus balcarceanus AY297839--
Longidorus ferrisi AY283163--
Longidorus raskii --AJ549984
Longidorus elongatus --AJ549987
DOI: https://doi.org/10.21307/jofnem-2018-027 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
Language: English
Page range: 369 - 386
Published on: Oct 17, 2018
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2018 Munawar Maria, Weimin Ye, Qing Yu, Jianfeng Gu, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.