Morphology, biology and parasite fauna of the least cisco (Coregonus sardinella) of the Yenisei River

Y. S. Nikulina; K. V. Polyaeva

doi:10.15421/012030

Morphology, biology and parasite fauna of the least cisco (Coregonus sardinella) of the Yenisei River

Biosystems Diversity ◽

10.15421/012030 ◽

2020 ◽

Vol 28 (3) ◽

pp. 230-237

Author(s):

Y. S. Nikulina ◽

K. V. Polyaeva

Keyword(s):

Parasite Fauna ◽

Water Bodies ◽

Head Width ◽

Base Length ◽

Yenisei River ◽

Intermediate Hosts ◽

Meristic Characters ◽

Morphometric Characters ◽

Dorsal Fin ◽

The Yenisei River

In the present study, we present an analysis of the morphological and ecological characteristics of the “turukhanskaja” form of the Siberian least cisco of the Yenisei River, including the characters of the size-age, sexual composition of the population, fecundity and growth. The variability of 34 morphological characters was studied. Significant differences were noted between males and females of the least cisco of the Yenisei River for 11 morphometric characters (head length, maximum body depth, caudal peduncle length, antepectoral distance, dorsal fin base length and dorsal fin depth, anal fin base length, pectoral fin length, head width, head (at nape), interorbital width). Significant differences in meristic characters were revealed in comparison of the least cisco from the Yenisei River with populations of Siberian least cisco from other water bodies. It was shown that the Yenisei least cisco is close to the European vendace Coregonus albula Linnaeus, 1758 not only according to cluster hierarchical analysis for some meristic and morphometric features but also in terms of growth and fecundity. In general, the Yenisei least cisco, as well as other populations of least cisco of the Taimyr, is characterized by heterogeneity in the structure of populations. The parasite fauna of Yenisei’s Siberian cisco, captured in the area of Dudinka town, consists of 17 species of parasites from seven systematic groups. It is dominated by Diphyllobothrium ditremum (Creplin, 1825) and Discocotyle sagittata (Leuckart, 1842). The feature of the parasite fauna of least cisco from Yenisei River in comparison with the Ob River (neighbouring water basin) is a low infection with trematodes and a high species diversity of Acanthocephala. The reason for the low infection with trematodes may be differences in the hydrological conditions of the water bodies, which in the Yenisei are unfavourable for the development of intermediate hosts of trematodes. Siberian cisco from the Yenisei River is a carrier of Diphyllobothrium dendriticum (Nitzsh, 1824), a species that can cause human disease.

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Biological properties of European bitterling Rhodeus amarus (Bloch, 1782) in Dinsiz Stream, Turkey

Acta Aquatica Aquatic Sciences Journal ◽

10.29103/aa.v7i2.2479 ◽

2020 ◽

Vol 7 (2) ◽

pp. 60

Author(s):

Semra Benzer ◽

Ali Gül

Keyword(s):

Standard Length ◽

Body Height ◽

Fork Length ◽

Biological Properties ◽

Base Length ◽

Pectoral Fin ◽

Morphometric Characters ◽

Dorsal Fin ◽

Total Length ◽

Fin Length

The aim of this article was to some morphometric characteristics of Rhodeus amarus from Dinsiz Stream. A morphological analysis of 21 morphometric characters were done. These characteristics total length (TL); fork length (FL); standard length (SL); predorsal length; dorsal fin base length; dorsal fin length; head length; pretorbital length; eye diameter; postorbital length; interorbital distance; body height; preanal distance; anal fin base length; anal fin length; pectoral fin base length; pectoral fin length; ventral fin base length; ventral fin length; caudal peduncle depth and weight (W). The samples were measured weight to the nearest 0.01 g and total, fork and standard length to the nearest 0.01 mm. The total length (TL) and weight (W min-max) of the fish were 4.2- 7.1 cm and 1.699- 7.444 g, respectively.Keywords: Rhodeus amarus; European bitterling; morphometric properties; Dinsiz Stream Turkey

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Sexual dimorphism in the Spotted Stinger Inimicus sinensis (Valenciennes, 1833) and notes on pore structures on the body

10.26757/pjsb2019a13004 ◽

2020 ◽

Vol 13 (1) ◽

Keyword(s):

Sexual Dimorphism ◽

Principal Component ◽

The Body ◽

Body Region ◽

Head Width ◽

Base Length ◽

Morphometric Characters ◽

Lower Jaw ◽

Meristic Counts ◽

Fin Ray

Spotted stinger individuals, Inimicus sinensis, collected from Carles, Iloilo, Philippines exhibited previously-unreported sexual dimorphism. Thirty-three morphological measurements, including standard length, and fourteen meristic counts from 99 specimens (47 males and 52 females) were analyzed for sexual dimorphism. Most morphometric characters differed significantly between the sexes, whereas no differences were found in meristic counts. Dorsal and anal-fin and free pectoral-fin ray lengths were greater in male specimens. On the other hand, the head and body region were relatively larger in female specimens. Principal Component Analysis (PCA) extracted two principal components from significantly different parameters, which explained 62.29 % of the cumulative variances. Variations in the two major components resulted from: head width, upper jaw, lower jaw, snout, pre-dorsal, pre-anal-fin, and anal-fin base lengths in PC1 (45.65 %); and orbit diameter and anal-fin base length in PC2 (16.64 %). Additionally, a single anterolateral pore on the body and pores above the lateral-line are described, although no evidence of association with other organs was found.

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Revision of the diagnostic characters of two morphologically similar snook species, Centropomus viridis and C. nigrescens (Carangiformes: Centropomidae)

Zootaxa ◽

10.11646/zootaxa.4915.3.2 ◽

2021 ◽

Vol 4915 (3) ◽

pp. 326-338

Author(s):

JUAN MANUEL MARTÍNEZ-BROWN ◽

JAIME NAVARRO-FLORES ◽

FRANCISCO JAVIER GARCÍA-RODRÍGUEZ ◽

LEONARDO IBARRA-CASTRO ◽

CARMEN ELVIRA VARGAS-PERALTA ◽

...

Keyword(s):

Morphological Character ◽

Molecular Data ◽

Genetic Identification ◽

Morphological Similarity ◽

Meristic Characters ◽

Morphometric Characters ◽

Dorsal Fin ◽

Fin Ray ◽

Gas Bladder ◽

External Character

Historically, the taxonomic identification of the two snook species, Centropomus viridis and C. nigrescens, has been challenging due to their morphological similarity and the inconsistency of the characters used for diagnosis. Therefore, this study aimed to evaluate the usefulness of the morphologic, meristic, and morphometric characters currently being used to identify C. viridis and C. nigrescens, based on molecular data. The results showed that the gas-bladder shape (i.e., C. viridis with diverticula and C. nigrescens without diverticula) was the only morphological character univocally related to genetic identification. Likewise, geometric morphometrics separated two groups; each corresponds to only one of two genetically (and gas bladder shape) identified species. Of all the meristic characters examined, only the second dorsal fin ray count (nine for C. viridis and ten for C. nigrescens) was related to the gas bladder shape and genetic identity; therefore, it is the only external character with a diagnostic utility to separate each species.

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Redescription and new records of Jansen’s goatfish, Parupeneus jansenii (Mullidae), from the Western Pacific and Eastern Indian Ocean

Zootaxa ◽

10.11646/zootaxa.4344.3.6 ◽

2017 ◽

Vol 4344 (3) ◽

pp. 541 ◽

Cited By ~ 2

Author(s):

FRANZ UIBLEIN ◽

TUAN ANH HOANG ◽

DANIEL GLEDHILL

Keyword(s):

Indian Ocean ◽

New Records ◽

Brown Spot ◽

Depth Information ◽

Depth Range ◽

Meristic Characters ◽

Morphometric Characters ◽

Dorsal Fin ◽

South Central ◽

Posterior Maxilla

For Jansen’s goatfish, Parupeneus jansenii (Mullidae), taxonomic knowledge has been rather poor and occurrence information restricted to a few localities only, with verified records from northern Sulawesi and Sunda Street (Indonesia), and Luzon (Philippines). This species is here included in the so-called “heptacanthus” group together with the Indo-Pacific cinnabar goatfish, P. heptacanthus, and five Indian Ocean congenerics, based on an evenly, symmetrically rounded posterior maxilla margin and similarities in meristic characters and preserved colour. In total 29 P. jansenii and 53 P. heptacanthus consisting of types, recently collected material from south-central Vietnam, southern Indonesia, and NE Australia, and geographically related reference material were studied along with single types of the other five heptacanthus-group species and P. angulatus, a morphologically similar Western Indian Ocean species. In total 62 quantitative meristic and morphometric characters including standard length (SL) were analysed after splitting the data into two size classes (small-sized fish, < 110 mm SL, vs. large-sized fish > 110 mm SL) to account for size-related differences due to allometry. Diagnoses for P. jansenii and P. heptacanthus and a redescription for P. jansenii were prepared. Fresh-fish colour descriptions for both large- and small-sized voucher specimens of P. jansenii are provided and the effects of freshness status on colour patterns is documented. New records for P. jansenii for Vietnam, southern Indonesia and NE Australia (= first verified record for Australia) are reported and depth information (24–100 m depth range) is given for the first time. P. jansenii differs from the co-occurring P. heptacanthus - independently of size - in shallower body and caudal peduncle, smaller maximum head depth, shorter barbels, caudal and pelvic fins, shallower first dorsal fin, shallower first ray of second dorsal fin, and lack of small dark red or reddish-brown spot on or just below the eighth lateral-line scale. The populations of P. jansenii from Vietnam and Australia differ from each other in a single character, the height of the eighth dorsal-fin ray, but both overlap with the intermediate population from Indonesia. This comprehensive alpha-taxonomic approach provides a useful tool for uncovering the diversity of Parupeneus goatfishes.

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Morphological Characterization of Two Fresh Water Eels Monopterus cuchia (Hamilton, 1822) and Ophisternon bengalense (McClelland, 1844)

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v9i1.30305 ◽

2016 ◽

Vol 9 (1) ◽

pp. 127-137

Author(s):

PR Roy ◽

NS Lucky ◽

MAR Hossain

Keyword(s):

Fresh Water ◽

Morphological Characterization ◽

Head Width ◽

Meristic Characters ◽

Morphometric Characters ◽

Original Population ◽

Body Diameter ◽

Leave One Out

Morphometric and meristic characters and truss measurements of 32 Monopterus cuchia, and of 17 Ophisternon bengalense were compared to know the population status of two fresh water eels of Bangladesh. The mean numbers of line below head were significantly different between two species. Significant differences were observed in 11 morphometric characters: Pre dorsal length (PDL), Post dorsal length (PoDL), Post anal length (PoAL), Head length (HL), Snout length (SnL), Upper jaw length (UJL), Lower jaw length (LJL), Head width (HW), Pre orbital length (PrOrL), Least body diameter (LBD) and Highest body diameter (HBD) and one truss measurement (3-5) between two species in varying degrees. For both morphometric and landmark measurements, the first and second DF (discriminant function) accounted 64.8% and 33.2% of among group variability, explaining 98% of total group variability. M. cuchia collected from Mymensingh and from Dinajpur constructed one sub-cluster and O. bengalense collected from Sathkhira and from Bagerhat constructed another sub-cluster based on the Distance of squared Euclidean dissimilarity. A correct classification of individuals into their original population from leave-one-out-classification varied between 93.3% and 94.1% by discriminant analysis. The results of the present study suggested that there was limited intermingling among populations and the populations of the species were separated from one another.J. Environ. Sci. & Natural Resources, 9(1): 127-137 2016

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Changing Population of Aphidius colemani in Relation to Environmental Factors

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v9i1.30306 ◽

2016 ◽

Vol 9 (1) ◽

pp. 139-141 ◽

Cited By ~ 1

Author(s):

M Ahmad ◽

KR Das ◽

H Kato Noguchi ◽

AKMM Islam

Keyword(s):

Head Width ◽

Meristic Characters ◽

Morphometric Characters ◽

Original Population ◽

Aphidius Colemani ◽

Lower Jaw ◽

Body Diameter ◽

The Mean ◽

Leave One Out

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Expanding the geographical distribution of Rhynchocypris czekanowskii (Dybowski, 1869) (Cypriniformes, Cyprinidae) in the basin of the Yenisei River, Eastern Siberia, Russia

Check List ◽

10.15560/15.3.369 ◽

2019 ◽

Vol 15 (3) ◽

pp. 369-374

Author(s):

Ivan Vladimirovich Zuev ◽

Sergei Mikhailovich Chuprov ◽

Anastasiya Vyacheslavovna Zueva

Keyword(s):

Geographical Distribution ◽

River Basin ◽

River Basins ◽

Middle Part ◽

Water Bodies ◽

The Arctic ◽

Eastern Siberia ◽

Yenisei River ◽

Small Water ◽

The Yenisei River

The currently known geographical distribution of Chekanovskii’s Minnow, Rhynchocypris czekanowskii (Dybowski, 1869), is limited only by the lower reaches of the arctic river basins in which this species lives. We report R. czekanowskii from the small water bodies of middle part of Yenisei river basin, expanding its distribution to the south of the river basin to 55°51ʹ41ʺ N latitude, more than 100 km south from previously known occurrences of this species.

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Morphometric and meristic characters of Otolithoides pama (Hamilton, 1822) occurring in Hooghly-Matlah estuarine system of West Bengal, India

Indian Journal of Fisheries ◽

10.21077/ijf.2020.67.4.98798-03 ◽

2020 ◽

Vol 67 (4) ◽

Author(s):

Dibakar Bhakta ◽

Sudhir Kumar Das ◽

Basanta Kumar Das ◽

T. S. Nagesh

Keyword(s):

Growth Rate ◽

West Bengal ◽

Estuarine System ◽

Meristic Characters ◽

Morphometric Characters ◽

Dorsal Fin ◽

Meristic Counts ◽

Fin Rays ◽

Eye Diameter ◽

High Degree

The present study analysed the morphometric and meristic characters of Otolithoides pama (Hamilton, 1822) collected from the Hooghly-Matlah estuarine system of West Bengal, India. A total of 618 specimens (298 males and 320 female) were collected during the period of 18 months from November 2016 to April 2018 with length ranging from 100-384 mm and weight 7.29-470.71 g, respectively. The analysis of 14 morphometric characters revealed that standard length has the fastest growth rate when compared to total length, while eye diameter has the lowest growth rate when compared with head length. A high degree of significant positive correlation with the ‘r’ values ranging from 0.978 to 0.997 was observed among different morphometric characters of O. pama. Among nine of the meristic counts, the coefficient of variation was found to be highest in anal fin rays (6.31%) and minimum in dorsal fin rays (1.12%). Based on the meristic counts, the fin formula of O. pama from the present study can be described as B. 7 , D. 9-10/1/44-45, P. i/16-17, V. 1/5 , A. 2/7-8, C. 19-21, L. 48-52. The number of gill rakers on the first left gill arch ranged from 19-21.

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