North Pacific Species of the GenusSolemyaLamarck, 1818 (Bivalvia: Solemyidae), with Notes onAcharax johnsoni(Dall, 1891)

Malacologia ◽  
2009 ◽  
Vol 51 (2) ◽  
pp. 233-261 ◽  
Author(s):  
Gennady M. Kamenev
Keyword(s):  
North Pacific ◽  
Pacific Species

Relationships between some North Atlantic and North Pacific species of Porphyra (Bangiales, Rhodophyta): evidence from isozymes, morphology, and chromosomes

1992 ◽  
Vol 70 (7) ◽  
pp. 1355-1363 ◽  
Author(s):  
Sandra C. Lindstrom ◽  
Kathleen M. Cole
Keyword(s):  
Key Words ◽  
Sibling Species ◽  
North Atlantic ◽  
North Pacific ◽  
Type Specimens ◽  
Pacific Species ◽  
Key Words Biogeography

Five pairs of putative sibling species of Porphyra are recognized between the boreal North Atlantic and North Pacific oceans on the basis of similarities in isozymes, morphology, and chromosomes. These pairs are North Atlantic P. amplissima and North Pacific P. miniata (recognized here as P. cuneiformis), North Atlantic P. "leucosticta" and North Pacific P. fucicola, North Atlantic P. "linearis" and North Pacific P. pseudolinearis, North Atlantic P. miniata and North Pacific P. variegata, and North Atlantic P. "purpurea" and North Pacific P. "purpurea." Species names in quotation marks are tentative, pending verification by further studies, since at least two species are currently recognized by each of these names. Evidence from isozymes and morphology is used to support separation of P. amplissima and P. cuneiformis from P. miniata, and reference is made to their type specimens. Key words: biogeography, chromosomes, isozymes, morphology, Porphyra, vicariance.

Key Kamchatkan collections provide new taxonomic and distributional insights for reportedly pan–North Pacific species of Rhodymeniophycidae (Rhodophyta)

Phycologia ◽  
2017 ◽  
Vol 56 (3) ◽  
pp. 296-302 ◽  
Author(s):  
Gina V. Filloramo ◽  
Amanda M. Savoie ◽  
Olga N. Selivanova ◽  
Michael J. Wynne ◽  
Gary W. Saunders
Keyword(s):  
North Pacific ◽  
Pacific Species

scholarly journals Trigonelline and other Betaines in Species of Laminariales

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Gerald Blunden ◽  
Michael D. Guiry ◽  
Louis D. Druehl ◽  
Kazuhiro Kogame ◽  
Hiroshi Kawai
Keyword(s):  
Nmr Spectroscopy ◽  
North Pacific ◽  
Aminobutyric Acid ◽  
H Nmr ◽  
The North ◽  
The Family ◽  
Consistent Feature ◽  
The North Pacific ◽  
Pacific Species

A collection of Laminariales species was made with examples in each of the presently recognized families of the order. Extracts of each species were examined for betaines, using primarily 1H NMR spectroscopy for their identification. Glycinebetaine was detected in all species tested and would appear to be a consistent feature of the Laminariales. γ-Aminobutyric acid betaine was found in all species of Laminaria examined and in three of the five Saccharina species (family Laminariaceae), but was not detected in species of either other genera of the family or in those of other Laminariales families. Trigonelline was found in some Laminaria and Saccharina species, as well as in the north Pacific species Postelsia palmaeformis ( Laminariaceae), Pseudochorda nagaii ( Pseudochordaceae) and Akkesiphycus lubricus ( Akkesiphycaceae).

Description of Laboratory-Reared Larvae of Paralithodes platypus (Decapoda, Anomura, Lithodidae)

1968 ◽  
Vol 25 (3) ◽  
pp. 439-455 ◽  
Author(s):  
Ethelwyn G. Hoffman
Keyword(s):  
North Pacific ◽  
Dorsal Surface ◽  
The Other ◽  
Frontal Area ◽  
King Crab ◽  
Larval Stages ◽  
Blue King Crab ◽  
Paralithodes Platypus ◽  
Pacific Species ◽  
Branchial Region

Larvae of the blue king crab, Paralithodes platypus (Brandt), were hatched and reared in the laboratory. All larval stages obtained developed in a manner similar to the development reported for other lithodid anomurans. In culture, P. platypus had four zoeal stages and a single glaucothoeal stage. The feature which distinguishes all zoeal stages of this species from zoeae of the other two North Pacific species of Paralithodes — P. camtschatica and P. brevipes — is the presence of 9 + 9 telson processes (including a hair-like second process) rather than 8 + 8 telson processes. Glaucothoes of P. platypus have one more pair of spines in the branchial region of the carapace than do those of P. camtschatica. Glaucothoes of P. platypus have 15 pairs of spines on the dorsal surface of the carapace, not including the spines of the frontal area (rostral complex) or the suborbital spines, whereas glaucothoes of P. camtschatica have 14 pairs of spines, and those of P. brevipes have 13 pairs.

The “Cribrilina annulata" problem and new species of Juxtacribrilina (Bryozoa: Cheilostomata: Cribrilinidae) from the North Pacific

Zootaxa ◽  
2021 ◽  
Vol 5016 (3) ◽  
pp. 333-364
Author(s):  
MATTHEW H. DICK ◽  
ANDREI V. GRISCHENKO ◽  
DENNIS P. GORDON ◽  
ANDREW N. OSTROVSKY
Keyword(s):  
North Pacific ◽  
Gulf Of Alaska ◽  
Commander Islands ◽  
The North ◽  
The Pacific ◽  
Shikotan Island ◽  
North Pacific Region ◽  
Circumpolar Arctic ◽  
The North Pacific ◽  
Pacific Species

Originally described from Greenland, Juxtacribrilina annulata (Fabricius, 1780) (previously known as Cribrilina annulata) has long been regarded as having a circumpolar, Arctic-boreal distribution. The genus Juxtacribrilina Yang, Seo, Min, Grischenko & Gordon, 2018 accommodated J. annulata and three related North Pacific species formerly in Cribrilina Gray, 1848 that lack avicularia, have a reduced (hood-like, cap-like, or vestigial) ooecium closely associated with modified latero-oral spines to form an ooecial complex, and produce frontally or marginally positioned dwarf ovicellate zooids. While the recently described NW Pacific species J. mutabilis and J. flavomaris, which have a vestigial ooecium like a short, flattened spine, clearly differ from J. annulata, the differences between J. annulata and other Pacific populations remained unclear. Here we provide descriptions for five species from the North Pacific region. We identified a specimen from the Sea of Okhotsk as J. annulata. Among the other four species, J. ezoensis n. sp. has a trans-Pacific distribution (abundant at Akkeshi, Hokkaido, Japan; also detected in the Commander Islands and at Ketchikan, Southeast Alaska); J. pushkini n. sp. was found only at Ketchikan; J. dobrovolskii n. sp. was found only at Shikotan Island in the Lesser Kuril Chain; and J. tumida n. sp. was found only at Kodiak, Gulf of Alaska. These four species all differ from J. annulata in having one or two frontal pore chambers on the proximal gymnocyst of most zooids; in budding frontal dwarf ovicellate zooids from these chambers rather than from basal pore chambers; in producing dwarf zooids more abundantly; and in having ooecia that are somewhat to markedly more reduced (cap-like rather than hood-like) and more closely integrated with the modified latero-oral spines. Furthermore, in the Pacific species, the ooecium in basal zooids arises from the roof of the distal pore chamber of the maternal zooid; ovicellate zooids can thus also bud a distal autozooid and are often arranged in columnar series with other zooids. In J. annulata, the hood-like kenozooidal ooecium budded from the maternal zooid replaces the distal autozooid, and ovicellate zooids are thus usually not embedded in a columnar series.  

scholarly journals Epimeria liui sp. nov., a new calcified amphipod (Amphipoda, Amphilochidea, Epimeriidae) from a seamount of the Caroline Plate, NW Pacific

ZooKeys ◽  
2020 ◽  
Vol 922 ◽  
pp. 1-11
Author(s):  
Yanrong Wang ◽  
Chaodong Zhu ◽  
Zhongli Sha ◽  
Xianqiu Ren
Keyword(s):  
New Species ◽  
North Pacific ◽  
The North ◽  
The North Pacific ◽  
Pacific Species

A calcified individual of Epimeria Costa, 1851 collected from an unnamed seamount of the Caroline Plate, NW Pacific, is recognized as new to science herein. This increases the number of known Epimeria species of the North Pacific to nine. Epimeria liuisp. nov. differs from its similar congeners by having a rostrum hardly reaching to the end margin of first peduncular article of antenna 1, the presence of large pyriform eyes, the size-increasing mid-dorsal teeth starting from pereonite 6 to pleonite 2, the projection on coxa 5 not extending to epimeral plate 1, and by having a nearly quadrate telson notched medially. To facilitate identification the new species is included in a key to Pacific species of Epimeria.

scholarly journals A Note on the Feeding Habits of Chimaera monstrosa

1935 ◽  
Vol 20 (1) ◽  
pp. 99-102 ◽  
Author(s):  
G. E. Newell ◽  
H. D. G. Roper
Keyword(s):  
Atlantic Ocean ◽  
North Pacific ◽  
Feeding Habits ◽  
Gut Contents ◽  
Longitudinal Incision ◽  
The North ◽  
Binocular Microscope ◽  
The North Pacific ◽  
Pacific Species

BashfordDean in his Monograph on the Chimaeroid Fishes (1906), describing the North Pacific species Chimaera colliei, states that it is omnivorous and that the “broken shells of mollusks are commonly found, as well as fragments of good sized crustaceans, as indeed the scanty literature records.” He further states that “in the gut of C. monstrosa Faber finds crustacean and shell-fish fragments; Monticelli, quoting Lütken, Cyprina islandica;hellips; Olsson finds also (and his observations are the most detailed hitherto published on the feeding of Chimaera) chætopods, amphipods, echinoids and polyps.”The following is an account of the gut contents of several specimens of Chimaera monstrosa which the authors were fortunate enough to obtain recently.The specimens which were taken from the Atlantic Ocean sixty miles N.W. of Black Eock (Lat. 54° N., Long. 12° W.) at a depth of 220 to 250 fathoms, were preserved in dilute formalin.The actual examination of the gut contents was carried out as follows.The œsophagus and rectum were ligatured, and that part of the gut lying between the two ligatures was removed and placed in a dish of dilute formalin. The gut was then opened by a longitudinal incision, and its contents carefully transferred to the dish where they were subsequently examined by means of a binocular microscope. The food fragments were then provisionally classified, care being taken not to separate such parts as may have belonged to the same organism during life.

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