scholarly journals A New Species of Diaphus Associated with Seamounts of the Emperor Chain, North-Western Pacific Ocean (Teleostei: Myctophiformes: Myctophidae)

2022 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Artem M. Prokofiev ◽  
Olga R. Emelyanova ◽  
Alexei M. Orlov ◽  
Svetlana Y. Orlova

A new species, Diaphus balanovi, is described based on 35 specimens collected over the Emperor Seamount Chain in the north-western Pacific Ocean. It belongs to the D. fulgens species complex and is most similar to D. kuroshio both morphologically and genetically. Nevertheless, the new species can be distinguished from D. kuroshio by its higher gill-rakers count, large luminous scale at PLO, large Dn, somewhat higher position of SAO3, otolith shape, and larger absolute size. The CO1 mtDNA sequence of D. balanovi differs by 16 substitutions from that of D. kuroshio. Diaphus balanovi may represent a benthopelagic derivate of D. kuroshio endemic to the Emperor Seamounts.

2018 ◽  
Vol 5 (2) ◽  
pp. 323-342 ◽  
Author(s):  
Hiroto Ichishima ◽  
Hitoshi Furusawa ◽  
Makino Tachibana ◽  
Masaichi Kimura

Author(s):  
Gennady M. Kamenev

Three new species, Hyalopecten vityazi sp. nov., H. abyssalis sp. nov. and H. kurilensis sp. nov., are described from the abyssal and hadal zones of the North-western Pacific. Hyalopecten vityazi was found in the Kuril-Kamchatka and Aleutian trenches at 6090–8100 m depth. It is the most deep-water species of the order Pectinida. Hyalopecten abyssalis and H. kurilensis were found at the abyssal plain adjacent to the Kuril-Kamchatka and Aleutian trenches at 4550–5045 m depth. To date, 13 species of the genus Hyalopecten are known from different regions of the World Ocean. A table with the main differences among all known species in the genus is provided.


1980 ◽  
Vol 31 (2) ◽  
pp. 241
Author(s):  
BB Collette ◽  
JL Russo

S. munroi, sp. nov.. is described from northern Australia and southern Papua New Guinea. It has been confused with S. niphonius of the north-western Pacific because both are spotted species with many (19-22) dorsal spines. S. niphonius is unique among the 18 species of the genus in having a straight intestine; S. munroi, like most other species of Scomberomorus, has two loops and three limbs to the intestine. S. munroi has more vertebrae (50-52) than S. niphonius (48-50) and most other species of Australian Scomberomorus (S. commerson 42-46, S. queenslandicus 48-49, S. semifasciatus 44-46), except for S. multiradiatus from Papua New Guinea (55-56). S. munroi has a deeper body and a longer postorbital distance than S. niphonius.


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