scholarly journals Two New Species and Temporal Changes in the Prevalence of Eimerians in a Free-Living Population of Townsend's Ground Squirrels (Spermophilus townsendii) in Idaho

1994 ◽  
Vol 80 (2) ◽  
pp. 251 ◽  
Author(s):  
P. G. Wilber ◽  
B. Hanelt ◽  
B. Van Horne ◽  
D. W. Duszynski
Keyword(s):  
New Species ◽  
Temporal Changes ◽  
Ground Squirrels ◽  
Free Living ◽  
Two New Species ◽  
Spermophilus Townsendii

Two new species of free-living marine nematodes of the family Oxystominidae Chitwood, 1935 (Enoplida) with a review of the genus Thalassoalaimus de Man, 1893 from the Argentine coast 

Zootaxa ◽  
2017 ◽  
Vol 4250 (4) ◽  
pp. 347
Author(s):  
ANTONELA MARTELLI ◽  
VIRGINIA LO RUSSO ◽  
GABRIELA VILLARES ◽  
CATALINA T. PASTOR DE WARD
Keyword(s):  
New Species ◽  
San Antonio ◽  
Marine Nematodes ◽  
San Jose ◽  
Key To Species ◽  
Free Living ◽  
Rio Negro ◽  
The Family ◽  
Two New Species ◽  
De Man

Two new free-living marine nematodes of the family Oxystominidae are described from San Antonio Bay (Río Negro) and San José Gulf (Chubut). Litinium australis sp. n., is characterized by having a rounded tail, by the first and second crown of cephalic setae with different lengths, gubernaculum with apophysis and by the presence of at least four precloacal papillae; Thalassoalaimus nestori sp. n., is characterized by having a conical tail, cephalic setae equal in length, gubernaculum with rounded and dorso-caudally directed apophysis and two precloacal papillae. An emended diagnosis of the genus Thalassoalaimus and a key to species are given. 

Two new nematode species, Linhystera breviapophysis and L. longiapophysis (Xyalidae, Nematoda), from the East China Sea

2014 ◽  
Vol 94 (3) ◽  
pp. 515-520 ◽  
Author(s):  
Tingting Yu ◽  
Yong Huang ◽  
Kuidong Xu
Keyword(s):  
New Species ◽  
East China Sea ◽  
Nematode Species ◽  
East China ◽  
The East China Sea ◽  
Free Living ◽  
China Sea ◽  
Dichotomous Key ◽  
Two New Species ◽  
Emended Diagnosis

Two new species of free-living nematodes discovered from the sediments in the East China Sea are described: Linhystera breviapophysis sp. nov. and L. longiapophysis sp. nov. Both species possess a dorso-caudally directed gubernacular apophysis, which makes them distinctly different from the two already known species of Linhystera. Linhystera breviapophysis is characterized by a gubernacular apophysis about 3.3 μm long, the presence of a crown of cervical setae and a filiform tail. Linhystera longiapophysis is characterized by a prominent gubernacular apophysis about 10 μm long, sparse cervical setae and a long filiform tail. An emended diagnosis of Linhystera and a pictorial dichotomous key to the species are given.

Two new species of free-living marine nematodes of Adoncholaimus Filipjev, 1918 (Oncholaimida: Oncholaimidae: Adoncholaiminae) from Hokkaido, northern Japan, with a key to species and discussion of the genus

Nematology ◽  
2014 ◽  
Vol 16 (4) ◽  
pp. 437-451 ◽  
Author(s):  
Daisuke Shimada ◽  
Hiroshi Kajihara
Keyword(s):  
New Species ◽  
Buccal Cavity ◽  
Large Body ◽  
Single Pair ◽  
Marine Nematodes ◽  
Key To Species ◽  
Free Living ◽  
Two New Species ◽  
New Diagnosis ◽  
Northern Japan

Two new species of free-living marine nematodes,Adoncholaimus daikokuensissp. nov. andA. pseudofervidussp. nov., from the coastal area of northern Japan, are described and illustrated.Adoncholaimus daikokuensissp. nov. is similar to five congeners,A. derjugini,A. punctatus,A. oxyuroides,A. squaluscomb. nov. andA. filicaudacomb. nov. in the absence of a gubernaculum, but differs in the absence of a ventral swelling on tail, spicule length and buccal cavity length.Adoncholaimus pseudofervidussp. nov. is similar toA. fervidusin having large body size, short tail, similar positions of the excretory pore and nerve ring, short spicules, arrangement of subventral setae in posterior region of body in males, and a single pair of terminal pores of the Demanian system surrounded by small gland cells in females.Adoncholaimus pseudofervidussp. nov. differs fromA. fervidusin having smaller, more anteriorly located amphids, longer buccal cavity, absence of gubernaculum in the male, and a different position of the terminal pores in the female. Partial sequences of the mitochondrial cytochromecoxidase subunit I gene (309-337 bp) of the new species are provided for identification based on the DNA barcoding method.Metoncholaimoidesis proposed as a junior synonym ofAdoncholaimus. The new diagnosis ofAdoncholaimusand a key to species are provided.Adoncholaimus squaluscomb. nov.,Adoncholaimus filicaudacomb. nov., andAdmirandus papillatuscomb. nov. are proposed.

Notes on the free-living marine genusEuchromadorade man, 1886 and its allies, with descriptions of two new species (Cromadoridae: Nematoda)

1975 ◽  
Vol 9 (4) ◽  
pp. 403-412 ◽  
Author(s):  
Richard M. Warwick ◽  
John W. Coles
Keyword(s):  
New Species ◽  
Free Living ◽  
Two New Species

scholarly journals Two new species of free-living nematodes (Nematoda, Monhysterida) from Mekong River mouth, Vietnam

2021 ◽  
Vol 13 (4) ◽  
pp. 536-549
Author(s):  
Vladimir G. Gagarin ◽  
Vladimir A. Gusakov ◽  
Cu Nguyen Dinh
Keyword(s):  
New Species ◽  
River Mouth ◽  
Mekong River ◽  
Free Living ◽  
Two New Species

A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species

Zootaxa ◽  
2008 ◽  
Vol 1764 (1) ◽  
pp. 1 ◽  
Author(s):  
JOSÉ H. LEAL
Keyword(s):  
New Species ◽  
New Zealand ◽  
New Genus ◽  
Florida Keys ◽  
New Taxon ◽  
Lateral Expansion ◽  
Free Living ◽  
Single Tooth ◽  
Two New Species ◽  
Anatomical Characters

Dilemma, a new genus of sessile septibranch bivalves is described. The new taxon encompasses at least three species, of which two are new: D. frumarkernorum new species, from off the Florida Keys, D. spectralis new species, from off Vanuatu, and “Corculum” inexpectatum Crozier, 1966, from off the Three Kings Islands, New Zealand, known only from its shell. The absence of ctenidia and presence of a septum, size and arrangement of siphons and siphonal tentacles, extensive fusion of the mantle margins allocate the new genus within the septibranch bivalves. A siphonal area with 15 tentacles, a large and eversible incurrent siphon, ostial apertures in the septum, and a hermaphroditic reproductive system suggest inclusion in the Poromyidae. The presence of three paired groups of septal ostia in the new genus is a feature shared with poromyids in the genus Cetoconcha. Unusual symmetry and form constitute the most striking features of the new genus. There is a strong anteroposterior compression and lateral expansion associated with ca. 30º rotation of the largest dimension (height) in relation to the anteroposterior axis. The shell hinge includes a single tooth and socket on each valve, and an external, but deeply sunken ligament. The two new species, mutually distinguishable by shell and anatomical characters, are known from live-collected specimens found adhering to rocks by means of robust byssus, which indicates attachment for life. The presence of ostracod remains in the digestive tract of one specimen of one of the new species and of a cirolanid isopod in the stomach of the holotype of the second new species are evidence of predation. Although predation by infaunal and free-living bivalves is known to occur throughout the Anomalodesmata, in particular within the septibranchs, discovery of the new genus reveals an unusual instance of predation by sessile, permanently attached mollusks.

scholarly journals Two New Species of Free-living Marine Nematodes (Nematoda: Axonolaimidae and Tripyloididae) from the Coast of Antarctica

2021 ◽  
Vol 26 (1) ◽  
pp. 49-63
Author(s):  
Daisuke Shimada ◽  
Atsushi C. Suzuki ◽  
Megumu Tsujimoto ◽  
Satoshi Imura ◽  
Keiichi Kakui
Keyword(s):  
New Species ◽  
Marine Nematodes ◽  
Free Living ◽  
Two New Species

Two new species of free-living nematodes from the mouth of the Cam River, North Vietnam

2007 ◽  
Vol 15 (2) ◽  
pp. 215-220
Author(s):  
V.G. Gagarin ◽  
Vu Thanh Nguyen
Keyword(s):  
New Species ◽  
Free Living ◽  
Two New Species ◽  
North Vietnam ◽  
Amphidial Fovea

Descriptions and illustrations of Terschellingia longisoma sp. n. and Sphaerotheristus parvus sp. n. are given. T. longisoma sp. n. is close to T. siphonolaimoides (Wieser, 1956) and T. capitata Vitiello, 1969. It differs from T. siphonolaimoides in the shorter and thinner body, shorter cephalic setae, absence of cervical setae, position of vulva, and from T. capitata in the longer and thinner body, shorter and thicker tail and larger amphidial fovea. S. parvus sp. n. is close to S. supoti Timm, 1968, but differs from it in the shorter stoma and shorter and differently shaped spicules.

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