scholarly journals Badis kaladanensis, a new fish species (Teleostei: Badidae) from Mizoram, northeast India

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0246466
Author(s):  
Lal Ramliana ◽  
Samuel Lalronunga ◽  
Mahender Singh

Badis kaladanensis, a new percoid fish is described from the Kaladan basin of Mizoram, northeast India. It belongs to the Badis badis species group but can be easily distinguished from its congeners, except from B. kanabos and B. tuivaiei, in having a dark blotch on the dorsal fin between the base of 3rd to 5th spines. It is further distinguished from B. kanabos in having more scales in lateral row (27–30 vs. 25–26), more circumpeduncular scale rows (18–20 vs. 16–17) and smaller eye (7.5–8.9% SL vs. 9.5–12.7); and from B. tuivaiei in having fewer vertebrae (28–29 vs. 30–31) and more rakers on the first gill arch (9 vs. 6–8). The analysis of the mitochondrial DNA (coi and cytb) revealed the distinctness of B. kaladanensis from all other Badis species with the interspecific distance ranges from 5.4–20.4%. (coi) and 5.1–26.3% (cytb).

2020 ◽  
Vol 96 (3) ◽  
pp. 642-650
Author(s):  
Abhinit Dey ◽  
Hrishikesh Choudhury ◽  
Abhishek Mazumder ◽  
Sarbojit Thaosen ◽  
Dandadhar Sarma

Zootaxa ◽  
2019 ◽  
Vol 4701 (2) ◽  
pp. 185-191
Author(s):  
HRISHIKESH CHOUDHURY ◽  
D. KHLUR B. MUKHIM ◽  
ABHINIT DEY ◽  
DEISAKEE P. WARBAH ◽  
DANDADHAR SARMA

Schistura syngkai, a new stone loach, is described from the Twahdidoh Stream of Wahblei River (Surma-Meghna drainage) in Meghalaya, northeast India. It is unique among its Indian congeners in having a prominent dark-brown to blackish mid-lateral stripe about an eye diameter or more in width, overlain on 12–18 vertically-elongate black blotches on a golden-brown to amber body. Additionally, the species possesses an incomplete lateral line and a slightly emarginate caudal fin, and exhibits no apparent sexual dimorphism. 


Zootaxa ◽  
2017 ◽  
Vol 4244 (2) ◽  
pp. 269 ◽  
Author(s):  
LALRAMLIANA LALRAMLIANA ◽  
DENIS VANLALHLIMPUIA ◽  
MAHENDER SINGH

Laubuka parafasciata, new species, is described from the Sala River of Mizoram, northeast India. The species differs markedly from all its congeners, with the exception of L. fasciata, in having a broad, dark-brown, midlateral stripe from the posterior rim of the orbit to the middle of the caudal-fin base. It is further distinguished from all other species in the genus by the combination of the following characters: premaxillae not in contact at symphysis, 16 precaudal vertebrae, minute tubercles scattered on the lower jaw, 28–33 lateral-line scales, 16–18 predorsal scales, 8½ branched dorsal-fin rays, 2½ scales between lateral line and pelvic-fin origin, and 16½–19½ branched anal-fin rays. 


2019 ◽  
Vol 4 (2) ◽  
pp. 2454-2458 ◽  
Author(s):  
Shantanu Kundu ◽  
Vikas Kumar ◽  
Kaomud Tyagi ◽  
Shibananda Rath ◽  
Avas Pakrashi ◽  
...  

2017 ◽  
Vol 107 (4) ◽  
pp. 534-542 ◽  
Author(s):  
S.J. Gawande ◽  
S. Anandhan ◽  
A.A. Ingle ◽  
Alana Jacobson ◽  
R. Asokan

AbstractHeteroplasmy is the existence of multiple mitochondrial DNA haplotypes within the cell. Although the number of reports of heteroplasmy is increasing for arthropods, the occurrence, number of variants, and origins are not well studied. In this research, the occurrence of heteroplasmy was investigated inThrips tabaci, a putative species complex whose lineages can be distinguished by their mitochondrial DNA haplotypes. The results from this study showed that heteroplasmy was due to the occurrence of mitochondrial cytochrome oxydase I (mtCOI) haplotypes from two differentT. tabacilineages. An assay using flow cytometry and quantitative real-time PCR was then used to quantify the per cell copy number of the two mtCOI haplotypes present in individuals exhibiting heteroplasmy from nine geographically distant populations in India. All of theT. tabaciindividuals in this study were found to exhibit heteroplasmy, and in every individual the per cell copy number of mtCOI from lineage 3 comprised 75–98% of the haplotypes detected and was variable among individuals tested. There was no evidence to suggest that the presense of lineage-specific haplotypes was due to nuclear introgression; however, further studies are needed to investigate nuclear introgression and paternal leakage during rare interbreeding between individuals from lineages 2 and 3.


1993 ◽  
Vol 125 (S165) ◽  
pp. 233-242 ◽  
Author(s):  
Felix A.H. Sperling

AbstractIn swallowtail butterflies of the Papilio machaon species group, mitochondrial (mt) DNA divergence has allowed speciation and adaptation to be understood more precisely. The reconstructed phylogeny of mtDNA of the P. machaon group is largely congruent with prior systematic hypotheses based on allozymes and color pattern. Genetic divergences of mtDNA support use of broad, character-based species concepts for the P. machaon group, and allow inferences regarding the origin of hybrid populations. The mtDNA phylogeny provides a guide for evolutionarily appropriate comparisons in studies of the chemical and genetic basis of hostplant use. Finally, mtDNA demonstrates the phylogenetically distinct status of an endangered species, P. hospiton.


Zootaxa ◽  
2021 ◽  
Vol 5004 (3) ◽  
pp. 481-489
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA

The new anchovy Stolephorus grandis n. sp., described on the basis of 10 specimens collected from Papua, Indonesia, and Australia, closely resembles Stolephorus mercurius Hata, Lavoué & Motomura, 2021, Stolephorus multibranchus Wongratana, 1987, and Stolephorus rex Jordan & Seale, 1926, all having double pigmented lines on the dorsum from the occiput to the dorsal-fin origin, a long maxilla (posterior tip just reaching or slightly beyond the posterior margin of preopercle), and lacking a predorsal scute. However, the new species clearly differs from the others in having fewer gill rakers (35–39 total gill rakers on the first gill arch in S. grandis vs. > 38 in the other species), a greater number of vertebrae (total vertebrae 42–43 vs. fewer than 41), longer caudal peduncle (21.9–23.7% SL vs. < 20.8%), and the depressed pelvic fin not reaching posteriorly to vertical through the dorsal fin-origin (vs. reaching beyond level of dorsal-fin origin).


Zootaxa ◽  
2011 ◽  
Vol 2758 (1) ◽  
pp. 57 ◽  
Author(s):  
HWAN-SUNG JI ◽  
JIN-KOO KIM

A new snake eel, Pisodonophis sangjuensis, is described based on 24 specimens collected from the South Sea of Korea (water depth 5–100 m) between 2005 and 2010. This species is characterized by the following morphological features: fleshy protrusions before and behind the posterior nostril; 1–2 regular rows of conical teeth in both jaws, prevomer and vomer are slightly separated from each other; the origin of the dorsal fin above the middle of the pectoral fin; and the pectoral fin is rounded and not elongated. Pisodonophis sangjuensis is most similar to P. cancrivorus in morphology, but the two species differ in their teeth shape (conical in P. sangjuensis vs. granular in P. cancrivorus), and their numbers of vertebrae (143–153 vs. 153–164, respectively). Pisodonophis sangjuensis differs from P. boro in the origin of the dorsal fin (above the middle of the pectoral fin in P. sangjuensis vs. far behind the pectoral fin in P. boro), their numbers of vertebrae (143–153 vs. 170–177, respectively), and their teeth shape (conical in P. sangjuensis vs. granular in P. boro). Pisodonophis sangjuensis is also easily distinguishable morphologically from the remaining seven Pisodonophis spp. worldwide. Molecular analysis using mitochondrial DNA 12S rRNA sequences supported that P. sangjuensis is a new species because of the considerable genetic distance from what appears to be its most closely related species, P. cancrivorus (d=0.068).


Zootaxa ◽  
2006 ◽  
Vol 1168 (1) ◽  
pp. 59 ◽  
Author(s):  
GERALDO M.D. SANTOS ◽  
JANSEN ZUANON

We describe Anostomoides passionis, a new species of anostomid fish from rio Xingu. The species attains 306 mm SL and is distinguished from the other two congeneric species by the lateral line scale count (38–39, instead of 39–41 in A. atrianalis and 42–44 in A. laticeps) and by the color pattern: brownish-grey with two round to heart-shaped, dark blotches on the side (a larger one under the dorsal fin and another above the origin of the anal fin). Anostomoides passionis inhabits rocky stretches of the rio Xingu with moderate to high current. Stomach contents of two specimens of A. passionis caught during the low water season were composed mainly of fragments of sponges.


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