Electrophoretic Characterization of Odd-Year Pink Salmon (Oncorhynchus gorbuscha) Populations from the Pacific Coast of Russia, and Comparison with Selected North American Populations

1994 ◽  
Vol 51 (S1) ◽  
pp. 158-171 ◽  
Author(s):  
James B. Shaklee ◽  
Natalya V. Varnavskaya
Keyword(s):  
North America ◽  
North American ◽  
Pacific Coast ◽  
Minimum Spanning Tree ◽  
Allelic Variation ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Significant Heterogeneity ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The Pacific

We collected and electrophoretically analyzed a total of 558 fish from eight locations along the Pacific Coast of Russia. We successfully screened 44 enzyme-coding loci: 14 loci were polymorphic at the 0.95 level in at least one collection, an additional eight were polymorphic at the 0.99 level but not at the 0.95 level, and the remaining 22 were either monomorphic or exhibited only very rare variation in these collections. Contingency χ2 tests using the 23 most variable loci revealed significant heterogeneity among all eight collections (p = 0.028) but little or no significant heterogeneity among collections within areas (northeastern Kamchatka peninsula, p = 0.180; southwestern Kamchatka, p = 0.533; and mainland adjacent to the northwestern Sea of Okhotsk, p = 0.071). Multidimensional scaling and minimum spanning tree analyses using genetic distances among collections indicated that geographic proximity of spawning sites was not associated with genetic similarity. The eight odd-year pink salmon (Oncorhynchus gorbuscha) collections from Russia were compared with 16 collections from North America (southeastern Alaska, British Columbia, and Washington) using data for 33 loci. The Russian populations differed from the North American populations in their patterns of allelic variation at many loci. The amount of genetic differentiation among populations from different rivers in Russia was comparable to that seen within similar-sized areas in North America.

Use of the stratified-Petersen estimator in fisheries management: estimating the number of pink salmon (Oncorhynchus gorbuscha) spawners in the Fraser River

1998 ◽  
Vol 55 (2) ◽  
pp. 281-296 ◽  
Author(s):  
Carl James Schwarz ◽  
Carolyn Gail Taylor
Keyword(s):  
Pacific Salmon ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Fraser River ◽  
Differential Migration ◽  
Mark Recapture ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The Pacific ◽  
Recent Developments

The simple-Petersen estimator is a well-known mark-recapture method to estimate animal abundance. Two key assumptions are equal catchability in both samples and complete mixing of tagged and untagged animals. If these are violated, severe bias can occur. The stratified-Petersen estimator can be used to account for some of the heterogeneity in catchability or mixing. In this paper, we first review recent developments in the stratified-Petersen experiment for fisheries audiences and demonstrate some of the practical problems that can occur that have not been discussed in the theoretical literature. Second, we present a case study to estimate the gross escapement of Fraser River pink salmon (Oncorhynchus gorbuscha) in 1991. The motivation for this study is a discrepancy of over 5 million fish between the estimates as derived by the Pacific Salmon Commission (PSC) (7.5 million fish based on a hydroacoustic method) and the Department of Fisheries and Oceans (DFO), Canada (13.0 million fish based on a mark-recapture method). One hypothesis put forward was that the discrepancy may be due to the use of a pooled-Petersen estimator when there is differential migration over time. The stratified-Petersen model suggests that little of this discrepancy can be explained by differential migration.

scholarly journals A new species of Placiphorella (Polyplacophora: Mopaliidae) from the North American Pacific coast

The Festivus ◽  
2019 ◽  
Vol 51 (2) ◽  
pp. 103-107
Author(s):  
Roger Clark
Keyword(s):  
New Species ◽  
North America ◽  
North American ◽  
Deep Sea ◽  
Pacific Coast ◽  
The North ◽  
The Pacific ◽  
A New Species

A new deep-sea chiton of the genus Placiphorella Dall, 1879, Placiporella laurae n. sp. is described from the Pacific coast of North America. It is compared with its congener Placiphorella pacifica Berry, 1919, from which it differs primarily by having granular valves, lacking false beaks, a papillose girdle, and the characteristics of its girdle spicules

External Morphology of the Pink Salmon, Oncorhynchus gorbuscha, Introduced into Lake Superior

1979 ◽  
Vol 36 (10) ◽  
pp. 1283-1287 ◽  
Author(s):  
Richard E. Berg
Keyword(s):  
Key Words ◽  
Lake Superior ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Morphometric Measurements ◽  
Male Fish ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The Pacific ◽  
Male Head ◽  
Degree Of Differentiation

Meristic and morphometric measurements were taken from 33 male and 44 female mature pink salmon, Oncorhynchus gorbuscha, collected in three Lake Superior tributaries in Marquette County, Michigan. Significant sexual differences were found for eight characteristics in males and two in females. The male fish had a greater degree of differentiation in the head and hump regions; females had larger and longer anal fins. The Lake Superior fish were found to have shorter bodies, larger and longer fins, and more exaggerated development in the male head and hump than has been reported for the Pacific populations. Key words: pink salmon, salmonids, exotic species, Lake Superior, morphology

ARYTAINILLA SPARTIOPHILA (FOERSTER) (HOMOPTERA: PSYLLIDAE) ON CYTISUS SCOPARIUS (L.) LINK IN VIRGINIA: FIRST RECORD IN EASTERN NORTH AMERICA

1986 ◽  
Vol 21 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Douglas G. Pfeiffer
Keyword(s):  
North America ◽  
North American ◽  
Pacific Coast ◽  
First Record ◽  
Eastern North America ◽  
Cytisus Scoparius ◽  
Scotch Broom ◽  
The Pacific

The psyllid Arytainilla spartiophila (Foerster) was collected from Scotch broom, Cytisus scoparius (L.) Link, at several locations in Virginia. This is the first North American record for this insect outside of the Pacific Coast Area.

Number of Circuli and Time of Annulus Formation on Scales of Pink Salmon (Oncorhynchus gorbuscha)

1966 ◽  
Vol 23 (5) ◽  
pp. 747-756 ◽  
Author(s):  
Roger E. Pearson
Keyword(s):  
North America ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Pink Salmon ◽  
Fork Length ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Annulus Formation ◽  
Relationship Of ◽  
The Relationship

Mean numbers of circuli on scales of juvenile pink salmon collected along the coast of North America in 1964 increased from 1.7 on June 23 to 17.4 on September 10. On scales of adults collected from the eastern North Pacific Ocean from 1962 to 1965, mean numbers of circuli ranged from 24.1 on January 23 (1964) to 46.9 on September 2 (1962). The fork length at time of scale formation was approximately 60 mm. Mean fork length increased with the total number of circuli. The relationship of fork length to number of scale circuli showed some variation between stocks. The winter ring was present or was being formed on the majority of scales taken in late January. The development of the annulus varied considerably among individual fish.

Survival of pink salmon (Oncorhynchus gorbuscha) fry to adulthood following a 10-day exposure to the aromatic hydrocarbon water-soluble fraction of crude oil and release to the Pacific Ocean

1999 ◽  
Vol 56 (11) ◽  
pp. 2087-2098 ◽  
Author(s):  
I K Birtwell ◽  
R Fink ◽  
D Brand ◽  
R Alexander ◽  
C D McAllister
Keyword(s):  
Pacific Ocean ◽  
Crude Oil ◽  
Soluble Fraction ◽  
Pink Salmon ◽  
Water Soluble ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Water Soluble Fraction ◽  
The Pacific ◽  
The Pacific Ocean

Saltwater-acclimated, coded-wire tagged, and adipose fin clipped pink salmon (Oncorhynchus gorbuscha) fry were exposed for 10 days to seawater (control) or 25-54 μg·L-1 (low dose) or 178-349 μg·L-1 (high dose) of the water-soluble fraction (WSF) of North Slope crude oil. The WSF was composed primarily of monoaromatics and was acutely lethal to the fry: 96-h LC50 ranged from 1 to 2.8 mg·L-1. After exposure the fry (30 000 per treatment) were released into the Pacific Ocean to complete their life cycle. The experiment was replicated in 1990, 1991, and 1992. There was no consistent significant dose-dependent effect of the 10-day exposure to the crude oil WSF on growth of the pink salmon prior to their release. Adult pink salmon from this experiment were captured in fisheries and also recovered from their natal Quinsam River, British Columbia. Pink salmon from each treatment group were recovered in similar numbers. Exposure of populations of fry to the WSF of crude oil and release to the Pacfic Ocean did not result in a detectable effect on their survival to maturity. Fry from all treatment groups incurred typically high mortality following release, and there were no discernible effects on survival that were attributable to exposure to the WSF of crude oil.

The Watercraft of Isla Cedros, Baja California: Variability and Capabilities of Indigenous Seafaring Technology along the Pacific Coast of North America

2005 ◽  
Vol 70 (2) ◽  
pp. 342-360 ◽  
Author(s):  
Matthew R. Des Lauriers
Keyword(s):  
North America ◽  
North American ◽  
Southern California ◽  
Baja California ◽  
Pacific Coast ◽  
American Archaeology ◽  
North American Archaeology ◽  
The Pacific ◽  
Political Boundaries ◽  
Northwestern Mexico

Many of the discussions addressing the issue of the capabilities and significance of early watercraft forms or a regionally specific evolutionary sequence for craft such as the Southern California plank canoe have limited their range of analogies to those forms present among the ethnohistorically documented groups of Southern California. However, this article attempts to demonstrate the existence of at least one additional form of watercraft present on the Pacific coast of Baja California, as well as call attention to the greatly underrepresented capabilities of some long-recognized forms of watercraft. Inference, historic documents, contemporary environmental conditions, and archaeological data are used in an attempt to reconstruct a meaningful picture of Isla Cedros watercraft and their place within the repertoire of indigenous maritime culture and society. It is suggested that modern political boundaries have resulted in the exclusion of Baja California from discussions of North American archaeology. This discussion attempts to be a contribution to concepts of indigenous watercraft along the Pacific coast of North America and a vehicle to expand the research horizons of North American archaeology to include the underinvestigated regions of Baja California and northwestern Mexico.

REVISION OF NORTH AMERICAN AGABUS LEACH (COLEOPTERA: DYTISCIDAE): LUTOSUS-, OBSOLETUS-, AND FUSCIPENNIS-GROUPS

1994 ◽  
Vol 126 (1) ◽  
pp. 135-181 ◽  
Author(s):  
D.J. Larson
Keyword(s):  
North America ◽  
Pacific Northwest ◽  
Sierra Nevada ◽  
Great Basin ◽  
Great Plains ◽  
North American ◽  
Pacific Coast ◽  
The Pacific ◽  
Sierra Nevada Mountains ◽  
Wide Range

AbstractSpecies of Agabus of the lutosus-, obsoletus-, and fuscipennis-groups, as defined by Larson (1989), are revised. Members of the lutosus- and obsoletus-groups are restricted to the Cordilleran and Great Plains regions of temperate western North America. Within this region, the species of each group are largely parapatric. Three species are assigned to the lutosus-group: A. lutosus LeConte along the Pacific Coast; A. griseipennis LeConte in the Great Basin, Rocky Mountain, and Great Plains regions; and A. rumppi Leech in the southern deserts. Agabus lutosus and A. griseipennis hybridize in the Pacific Northwest; A. lutosus mimus Leech is synonymized with A. lutosus. The obsoletus-group contains five species: A. obsoletus LeConte, A. morosus LeConte, and A. ancillus Fall along the Pacific Coast and the Sierra Nevada Mountains; A. hoppingi Leech in the Sierra Nevada Mountains; and A. obliteratus LeConte, containing two subspecies, A. o. obliteratus and A. o. nectris Leech, new status, with a wide range including the Great Plains and Cordillera but not reaching the Pacific Coast. The four species of the fuscipennis-group, A. ajax Fall, A. coxalis Sharp, A. fuscipennis (Paykull), and A. infuscatus Aubé, are boreal and all except A. ajax are Holarctic. Agabus coxalis is restricted to northwestern North America, the other three species are transcontinental.For each species the following information is provided: synonymy, description, and illustrations of taxonomically important characters; notes on relationships, variation, distribution, and ecology; and a map of North American collection localities. Group diagnoses and keys to the species of each group are presented. A correction to the key to species groups of North American Agabus (Larson 1989) is made with the addition of a couplet to include the obsoletus-group. Lectotypes are designated for A. discolor LeConte and A. obliteratus LeConte.

Random Movement and Orientation in Pink Salmon (Oncothynchus gorbuscha) Migrations

1989 ◽  
Vol 46 (6) ◽  
pp. 1062-1066 ◽  
Author(s):  
Kazuhiko Hiramatsu ◽  
Yukimasa Ishida
Keyword(s):  
North American ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Random Movement ◽  
The North ◽  
Oriented Movement ◽  
The Mean ◽  
Using Data ◽  
Model Fish

The homing migration of pink salmon (Oncorhynchus gorbuscha) from the open ocean towards their natal rivers was studied by a mathematical model using data from tagging experiments. In this model fish migration was considered to be the resultant of fish orientation and random movement. The mean migration speed and dispersion coefficient (an index of random movement) evaluated from regression analysis were 19.6 km∙d−1 and 739 km2∙d−1 for the North American group and 47.1 km∙d−1 and 863 km2∙d−1 for the East Kamchatkan group, respectively. The results indicated that pink salmon migration has more oriented movement than had been suggested by a previous computer simulation by other workers. The results also indicated that there is a distinct difference in the migratory behavior of North American and East Kamchatkan pink salmon.

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