scholarly journals Grenadiers (Teleostei: Gadiformes: Macrouridae) of Japan and adjacent waters, a taxonomic monograph

Megataxa ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 1-383
Author(s):  
NAOHIDE NAKAYAMA
Keyword(s):  
Sensu Stricto ◽  
Northwestern Pacific ◽  
Gill Slit ◽  
Fish Family ◽  
Morphometric Characters ◽  
Interorbital Width ◽  
Voucher Specimens ◽  
First Time ◽  
Fin Length ◽  
Pelvic Fin

The taxonomy of the gadiform fish family Macrouridae (sensu stricto) in the northwestern Pacific off Japan and adjacent waters is critically reviewed on the basis of 7846 specimens. A total of 76 species belonging to 18 genera is recognized, including four new species of the genera Coelorinchus (2 species), Kuronezumia (1), and Nezumia (1). Coelorinchus lanceolatus sp. nov. superficially resembles Coe. anatirostris Jordan & Gilbert in Jordan & Starks, 1904, but differs most notably from that species in having a distinctly longer snout (107% of the postrostral length vs. 60–88%). Coelorinchus nox sp. nov. is closely similar to Coe. smithi Gilbert & Hubbs, 1920, but readily differs from the latter in that the occipital scales are covered with short, erect, needle-like spinules in widely divergent, comb-like rows (vs. moderately reclined, keel-like to knife-like spinules in saw-toothed rows). Kuronezumia endoi sp. nov. is a distinctive species among the genus, and is clearly diagnosed from other congeners in having the highest number of pelvic-fin rays (15 vs. ≤14). Nezumia rara sp. nov. closely resembles N. tomiyamai (Okamura, 1963), but they can be distinguished from each other by the combination of a number of morphometric characters, including the orbit-preopercle distance, interorbital width, pelvic-fin length, and length of gill slit. New and reconfirmed synonymies include: Coe. abbreviatus Chu & Lo in Chu, Chan & Chen, 1963 and Coe. intermedius Chu & Lo in Chu, Chan & Chen, 1963 with Coe. multispinulosus Katayama, 1942; Coe. productus Gilbert & Hubbs, 1916 with Coe. anatirostris; Coe. asteroides Okamura, 1963 with Coe. hige Matsubara, 1943; Coe. sparsilepis Okamura & Yatou, 1984 with Coe. parallelus (Günther, 1877); Coryphaenoides filamentosus Okamura, 1970 with Cor. cinereus (Gilbert, 1896); Cor. liocephalus (Günther, 1887) with Cor. leptolepis Günther, 1877; Cor. spinulosus (Gilbert & Burke, 1912) with Cor. acrolepis (Bean, 1884); and Ventrifossa fusca Okamura, 1982 with V. misakia (Jordan & Gilbert in Jordan & Starks, 1904). Lectotypes are designated for Coe. parallelus, Cor. asper Günther, 1877, Cor. liocephalus, and Cor. nasutus Günther, 1877. Previous records of N. burragei (Gilbert, 1905) and N. propinqua (Gilbert & Cramer, 1897) from Japan represent misidentifications, and these species are eliminated from the list of Japanese grenadiers. Coryphaenoides armatus (Hector, 1875) and Cor. leptolepis are recorded for the first time from the hadal zone. All species are illustrated, with full descriptions for 14 species. Dichotomous keys to genera and species are also provided. The distribution of each species in the study area is revised based on the specimens examined here, with re-identification of voucher specimens of most previous geographical records.

Sardinella alcyone n. sp., a new sardine (Teleostei: Clupeiformes: Clupeidae) from the northwestern Pacific Ocean

Zootaxa ◽  
2019 ◽  
Vol 4702 (1) ◽  
pp. 19-25 ◽  
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dark Spot ◽  
Northwestern Pacific ◽  
Ryukyu Islands ◽  
Lower Jaw ◽  
The Ryukyu Islands ◽  
Southwestern Taiwan ◽  
Gill Raker ◽  
Fin Length ◽  
Pelvic Fin

The new sardine Sardinella alcyone n. sp. is described on the basis of 19 specimens collected from the Ryukyu Islands, Japan and southwestern Taiwan. The new species closely resembles Sardinella pacifica Hata & Motomura 2019, both species having lateral scales with centrally discontinuous striae, a dark spot on the dorsal-fin origin, the pelvic fin with 8 rays, deciduous body scales, and very similar numbers of prepelvic and postpelvic scutes, scale rows in the longitudinal series, and pseudobranchial filaments. However, the new species is distinguished from S. pacifica by having lower total gill-raker counts on the first, second, third and fourth gill arches, and on the posterior face of the third gill arch (99–112, 97–115, 79–98, 62–77, and 25–31, respectively, vs. 112–137, 112–148, 95–127, 78–106, and 30–43), and greater pectoral fin (20.7–23.4% SL vs. 18.2–20.8%), pelvic fin (11.9–13.1% SL vs. 10.3–11.9%), maxilla (10.8–12.4% SL vs. 9.3–10.9%), lower jaw (11.8–13.4% SL vs. 10.4–11.6%), and pre-anal-fin length (77.4–82.3% SL vs. 72.9–79.3%) proportions. 

scholarly journals Morphometric features of topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) in the Hirfanlı Reservoir, Turkey

2020 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Semra Benzer
Keyword(s):  
Fork Length ◽  
Pseudorasbora Parva ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Morphometric Characters ◽  
Topmouth Gudgeon ◽  
Dorsal Fin ◽  
Peduncle Length ◽  
Fin Length ◽  
Pelvic Fin

The aim of this study was to some morphometric characteristics of Pseudorasbora parva from Hirfanlı Reservoir, Turkey. A morphological analysis of 29 morphometric characters were performed. These characteristics head length; preorbital distance; eye diameter; postorbital distance; head depth; predorsal distance; prepelvic distance; preanal distance; pectoral fin–pelvic fin (P-V) distance; pelvic fin– anal fin (V-A) distance; body depth (18 perpendicular); dorsal fin (anterior end)-anal fin distance (Da-A); dorsal fin (posterior end)–anal fin distance (Dp-A); postdorsal distance; postanal distance; caudal (C) peduncle length (dorsal); caudal peduncle length (ventral); caudal peduncle depth; dorsal fin (D) base length; anal fin (A) base fin length; pectoral fin (P) length; pelvic (V) fin length; caudal upper lobe length; caudal fork length; caudal lower lobe length; dorsal fin length; anal fin length; gape. The samples were measured weight to the nearest 0.01g and total, fork and standard length to the nearest 0.01 mm. The total length (TL) ranged from 4.10 cm to 9.30 cm and body weight ranged from 0.600 to 7.137 g.Keywords: Pseudorasbora parva; topmouth gudgeon; morphometric properties; Hirfanlı Reservoir

scholarly journals Resurrection of the genus Homalopteroides (Teleostei: Balitoridae) with a redescription of H. modestus (Vinciguerra 1890)

Zootaxa ◽  
2012 ◽  
Vol 3586 (1) ◽  
pp. 329 ◽  
Author(s):  
ZACHARY S. RANDALL ◽  
LAWRENCE M. PAGE
Keyword(s):  
Lateral Line ◽  
Head Length ◽  
Pectoral Fin ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Interorbital Width ◽  
Fin Rays ◽  
Orbital Rim ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

The genus Homalopteroides Fowler 1905 is resurrected and distinguished from the genus Homaloptera van Hasselt 1823based on a combination of characters including a unique mouth morphology, dorsal-fin origin over pelvic fin,≤60 lateral-line scales, and≤30 predorsal scales. Species included in Homalopteroides are H. wassinkii (Bleeker 1853), H. modestus(Vinciguerra 1890), H. rupicola (Prashad & Mukerji 1929), H. smithi (Hora 1932), H. stephensoni (Hora 1932), H. weberi(Hora 1932), H. tweediei (Herre 1940), H. indochinensis (Silas 1953), H. nebulosus (Alfred 1969), H. yuwonoi (Kottelat1998), and possibly H. manipurensis (Arunkumar 1999). Homalopteroides modestus (Vinciguerra 1890) is a poorlyknown species that was originally described from the Meekalan and Meetan rivers of southern Myanmar. It occurs in theSalween, Mae Khlong, and Tenasserim basins, and can be distinguished from all other species of Homalopteroides by thecombination of caudal-fin pattern (black proximal and distal bars, median blotch), 15 pectoral-fin rays, pectoral-fin lengthgreater than head length, 5½–6½ scales above and 5–6 scales below the lateral line (to the pelvic fin), 39–44 total lateral-line pores, no axillary pelvic-fin lobe, pelvic fin not reaching anus, orbital length less than interorbital width in adult, and maxillary barbel reaching to or slightly past the anterior orbital rim.

NORTH AMERICAN WATER MITES OF THE FAMILY MOMONIIDAE VIETS (ACARI: ARRENUROIDEA). IV. REVISION OF SPECIES OF STYGOMOMONIA (SENSU STRICTO) SZALAY, 1943

1991 ◽  
Vol 123 (3) ◽  
pp. 501-558 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
New Species ◽  
North American ◽  
Sensu Stricto ◽  
North American Species ◽  
Water Mites ◽  
Dispersal Patterns ◽  
The Family ◽  
Three New Species ◽  
New Diagnosis ◽  
First Time

AbstractMorphological, life history, and distributional data are presented for North American species of the subgenus Stygomomonia (sensu stricto) Szalay, 1943. Adults of the seven previously recognized species are redescribed, and deutonymphs of five of these species are described for the first time. Two species, S. (s.s.) neomexicana Cook and S. (s.s.) occidentalis Cook are substantially revised on the basis of an examination of the types and extensive series of newly collected specimens. Three new species are described, S. (s.s.) californiensis on the basis of deutonymphs and adults, and S. (s.s.) imamurai and S. (s.s.) cooki on the basis of adults. A new diagnosis of the subgenus is proposed and discussed, the relationships of the various species are discussed, and a key to deutonymphs and adults of North American species is presented. New distributional data are presented for all species, and dispersal patterns from Pleistocene refugia are discussed.

Navigobius asayake, a new species of ptereleotrine goby (Gobioidei: Microdesmidae) from Kagoshima, southern Japan

Zootaxa ◽  
2018 ◽  
Vol 4526 (3) ◽  
pp. 373
Author(s):  
MAKOTO OKAMOTO ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dorsal Fin ◽  
Southern Japan ◽  
Fin Rays ◽  
Eye Diameter ◽  
Yellow Stripe ◽  
Fin Length ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of ptereleotrine dartfish, Navigobius asayake, is described based on four specimens (45.0–52.1 mm in standard length: SL) collected from off the Satsuma Peninsula and Tanegashima island, Kagoshima, southern Japan. It is distinguished from other congeners by the following combination of characters: second dorsal-fin rays I, 18–19; anal-fin rays I, 19; pectoral-fin rays 21–22; gill rakers 5–6 + 13–15; head length 25.1–26.4% SL; eye diameter 8.6–10.0% SL; pelvic-fin length 15.2–16.1% SL; and a well-developed yellow stripe extending from behind upper part of eye to beneath first dorsal fin. 

Filling missing links in albuneid crab distributions (superfamily Hippoidea) in the Bay of Bengal, eastern Indian Ocean

Crustaceana ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. 1495-1504 ◽  
Author(s):  
Rajan Kumar ◽  
Shikha Rahangdale ◽  
Subal Kumar Roul
Keyword(s):  
Indian Ocean ◽  
Bay Of Bengal ◽  
Morphological Characters ◽  
Eastern Indian Ocean ◽  
Species Discrimination ◽  
Gulf Of Mannar ◽  
Fishing Gear ◽  
Morphometric Characters ◽  
First Time

Abstract Albuneid crabs are specialized and active sand-burrowing organisms. Despite their substantial diversity, their ability to avoid fishing gear leads to “under collection” and a discontinuous record of distribution. The present study documents the first distributional record of Albunea occulta Boyko, 2002 from the Bay of Bengal, eastern Indian Ocean. Albunea thurstoni Henderson, 1893 is also recorded for the first time from the area, i.e., from the Gulf of Mannar, southwestern Bay of Bengal. This study further reports variation in morphological characters, especially in the carapace grooves (CG) from previous records and across specimens from different regions. Morphometric characters were found useful in species discrimination, which is explained as well.

scholarly journals Burkholderia species in human infections in Mexico: Identification of B. cepacia, B. contaminans, B. multivorans, B. vietnamiensis,B. pseudomallei and a new Burkholderia species

2021 ◽  
Vol 15 (6) ◽  
pp. e0009541
Author(s):  
Georgina Meza-Radilla ◽  
Violeta Larios-Serrato ◽  
Rigoberto Hernández-Castro ◽  
J. Antonio Ibarra ◽  
Paulina Estrada-de los Santos
Keyword(s):  
Sensu Stricto ◽  
Clinical Settings ◽  
Correct Identification ◽  
Opportunistic Pathogens ◽  
Burkholderia Species ◽  
Medical Centers ◽  
Accurate Treatment ◽  
Immunosuppressed Patients ◽  
Human Infections ◽  
First Time

Background Burkholderia sensu stricto is comprised mainly of opportunistic pathogens. This group is widely distributed in the environment but is especially important in clinical settings. In Mexico, few species have been correctly identified among patients, most often B. cepacia is described. Methodology/Principal findings In this study, approximately 90 strains identified as B. cepacia with the VITEK2 system were isolated from two medical centers in Mexico City and analyzed by MLSA, BOX-PCR and genome analysis. The initial identification of B. cepacia was confirmed for many strains, but B. contaminans, B. multivorans and B. vietnamiensis were also identified among clinical strains for the first time in hospitals in Mexico. Additionally, the presence of B. pseudomallei was confirmed, and a novel species within the B. cepacia complex was documented. Several strains misidentified as B. cepacia actually belong to the genera Pseudomonas, Stenotrophomonas and Providencia. Conclusions/Significance The presence of different Burkholderia species in Mexico was confirmed. Correct identification of Burkholderia species is important to provide accurate treatment for immunosuppressed patients.

scholarly journals New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula

ZooKeys ◽  
2020 ◽  
Vol 984 ◽  
pp. 133-163
Author(s):  
Gernot K. Englmaier ◽  
Nuria Viñuela Rodríguez ◽  
Herwig Waidbacher ◽  
Anja Palandačić ◽  
Genanaw Tesfaye ◽  
...  
Keyword(s):  
Middle East ◽  
Short Distance ◽  
Additional Data ◽  
Arabian Peninsula ◽  
Sequence Data ◽  
African Continent ◽  
Type Specimens ◽  
Fin Ray ◽  
Fin Length ◽  
Pelvic Fin

On the African continent, the genus Garra consists of several species often insufficiently separated from each other by diagnostic characters. Herein, a detailed morphological redescription of Garra makiensis from the Awash River drainage is presented, together with additional data on the type specimens of G. makiensis and G. rothschildi. Mitochondrial CO1 sequence data are also provided, including the historic paralectotype of G. makiensis, with a comparison to Garra species from Africa and the Middle East. Based on these sequences, G. makiensis clusters outside the group of African congeners and is a sister lineage to species from the south-east of the Arabian Peninsula. Although morphologically variable, G. makiensis is characterised by having a single unbranched pectoral-fin ray, a short distance between vent and anal-fin origin (7.3–19.7 % of pelvic – anal distance), chest and belly covered with scales, and a prominent axillary scale at base of pelvic fin (18.8–35.5 % of pelvic-fin length).

The optimum cut-off value to differentiate Echinococcus granulosus sensu stricto from other species of E. granulosus sensu lato using larval rostellar hook morphometry

2013 ◽  
Vol 89 (1) ◽  
pp. 1-8 ◽  
Author(s):  
S.V. Soriano ◽  
N.B. Pierangeli ◽  
L.A. Pianciola ◽  
M. Mazzeo ◽  
L.E. Lazzarini ◽  
...  
Keyword(s):  
Molecular Epidemiology ◽  
Echinococcus Granulosus ◽  
Cystic Echinococcosis ◽  
Control Strategies ◽  
High Sensitivity ◽  
Field Studies ◽  
Sensu Stricto ◽  
Roc Curve Analysis ◽  
First Time

AbstractCystic echinococcosis caused by Echinococcus granulosus sensu lato is one of the most important helminth zoonoses in the world; it affects both humans and livestock. The disease is endemic in Argentina and highly endemic in the province of Neuquén. Considerable genetic and phenotypic variation has been demonstrated in E. granulosus, and ten different genotypes (G1–G10) have been identified using molecular tools. Echinococcus granulosus sensu lato may be considered a species complex, comprised of E. granulosus sensu stricto (G1–G3), E. equinus (G4), E. ortleppi (G5) and E. canadensis (G6–G10). In endemic areas, the characterization of cystic echinococcosis molecular epidemiology is important in order to apply adequate control strategies. A cut-off value for larval large hook total length to distinguish E. granulosus sensu stricto isolates from those produced by other species of the complex was defined for the first time. Overall, 1780 larval hooks of 36 isolates obtained from sheep (n= 11, G1), goats (n= 10, G6), cattle (n= 5, G6) and pigs (n= 10, G7) were analysed. Validation against molecular genotyping as gold standard was carried out using the receiver operating characteristic (ROC) curve analysis. The optimum cut-off value was defined as 26.5 μm. The proposed method showed high sensitivity (97.8%) and specificity (91.1%). Since in most endemic regions the molecular epidemiology of echinococcosis includes the coexistence of the widely distributed E. granulosus sensu stricto G1 strain and other species of the complex, this technique could be useful as a quick and economical tool for epidemiological and surveillance field studies, when fertile cysts are present.

The Ornithodoros capensis group (Acari: Argasidae): a morphological diagnosis and molecular characterization of O. capensis sensu stricto from Queimada Grande Island, Brazil 

2017 ◽  
Vol 22 (1) ◽  
pp. 28 ◽  
Author(s):  
Sebastián Muñoz-Leal ◽  
Ricardo A. Dias ◽  
Carlos R. Abrahão ◽  
Marcelo B. Labruna
Keyword(s):  
Molecular Characterization ◽  
Related Species ◽  
Morphological Analysis ◽  
Bacterial Pathogens ◽  
Sensu Stricto ◽  
Closely Related Species ◽  
Paulo State ◽  
Morphological Diagnosis ◽  
First Time

Ornithodoros capensis sensu lato (s. l.) is a worldwide-distributed group of soft ticks that parasitize birds in insular and continental lands. It is currently composed of 11 morphologically closely related species. Several viral and bacterial pathogens, and particularly Coxiella-like endosymbiont organisms have been described coexisting with ticks of this group. Since it last report in 1983, the presence of O. capensis s. l. in Brazil has remained undocumented. By a morphological analysis of larvae and a molecular characterization of ticks and Coxiella genes we describe for the first time O. capensis sensu stricto in Brazil from specimens collected on Queimada Grande Island, in São Paulo state.

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