Morphological diversity and differentiation of Asian populations of pink salmon Oncorhynchus gorbuscha (Walbaum) of even generations

2021 ◽  
pp. 22-33
Author(s):  
Sergei Pavlovich Pustovoit
Keyword(s):  
Pink Salmon ◽  
Quantitative Description ◽  
Morphological Diversity ◽  
Oncorhynchus Gorbuscha ◽  
External Appearance ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Asian Populations ◽  
Interpopulation Variability ◽  
Morphological Differences ◽  
Different Parts

A morphological study of three Asian populations of pink salmon of the Ola, Bolshaya and Zhupanov rivers of adjacent even generations was carried out. For a quantitative description of the external appearance of pink salmon, a scheme of 17 measurements proposed by M.K. Glubokovsky [3] was used. On average, lower values of morphological diversity are characteristic of head measurements and fin heights, while indicators of body length and height have high indicators of morphological diversity. The hierarchical method of decomposition of morphological diversity makes it possible to find out the proportions of intrapopulation and interpopulation variability included in the total value of morphological diversity of each measurement. For females, the shares of morphological diversity averaged over all dimensions are as follows: sample — 48%, intra-annual — 19% and interpopulation — 33% share In males sample — 47%, intra-annual — 17% and interpopulation — 36% share. Thus, almost half of the total value of morphological diversity is determined by differences in morphological measurements between individuals within the sample, interpopulation differences make up one third of the total value, and the interannual share in the indicator of morphological differences is quite small. The rather high interpopulation proportion of morphological diversity indicates the possibility of using morphological measurements to distinguish populations from different parts of the range.

Morphological diversity of odd generations of the north sea pink salmon (Oncorhynchus gorbuscha)

2020 ◽  
pp. 40-50
Author(s):  
S. Pustovoit
Keyword(s):  
Pink Salmon ◽  
Morphological Diversity ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The North ◽  
Artificial Breeding ◽  
Marine Diversity ◽  
The North Sea ◽  
Analysis Of Variation ◽  
Combined Data

The analysis of variation of indicators of morphological diversity of three odd generations in the largest North-Okhotsk population of pink salmon of the Ola river (Tauy Bay) is carried out. The variation of morphological diversity in the samples collected from the beginning to the end of the spawning course in the Ola river has a two-vertex character — starting from the first sample to the next one, there is an increase in values, however, in the mid-spawning course, there is a decline, then again some growth. The reason for the detected variation in the indicator of marine diversity is the presence of two races in the population of the pink salmon of the Ola river — early and late. The linear diversity of male pink salmon according to the combined data for all years of research (µ = 18,52 ± 0,329) was higher than that of females (µ = 12,42 ± 0.269) (t = 14,49, p < 0,05). The weight diversity of males was also significantly higher (µ = 16,98 ± 0,330) than in females (µ = 11,14 ± 0,241), (t = 16,69, p < 0,05). The marked differences in the indicators of morphological diversity between females and males can be explained in the framework of the evolutionary theory of sex V. Geodakian. Artificial breeding of pink salmon at a fish breeding plant can have a significant impact on the morphological diversity of a mixed population.

Supplementary Checks on the Scales of Pink Salmon (Oncorhynchus gorbuscha) and Chum Salmon (O. keta)

1965 ◽  
Vol 22 (6) ◽  
pp. 1477-1489 ◽  
Author(s):  
H. T. Bilton ◽  
W. E. Ricker
Keyword(s):  
British Columbia ◽  
Chum Salmon ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Commercial Fisheries ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Clear Cut ◽  
Second Year Of Life ◽  
Second Year ◽  
Similar Incidence

Among 159 central British Columbia pink salmon that had been marked by removal of two fins as fry and had been recovered in commercial fisheries after one winter in the sea, the scales of about one-third showed a supplementary or "false" check near the centre of the scale, in addition to the single clear-cut annulus. This evidence from fish of known age confirms the prevailing opinion that such extra checks do not represent annuli, hence that the fish bearing them are in their second year of life rather than their third. Unmarked pink salmon from the same area, and some from southern British Columbia, had a generally similar incidence of supplementary checks. In both marked and unmarked fish the supplementary checks varied in distinctness from faint to quite clear. In a sample of scales of 14 double-fin marked chum salmon which were known to be in their 4th year, all fish had the expected 3 annuli, and 12 fish had a supplementary check inside the first annulus.

Relationship of water column stability to the growth, condition, and survival of pink salmon (Oncorhynchus gorbuscha) in the northern coastal Gulf of Alaska and Prince William Sound

2012 ◽  
Vol 69 (5) ◽  
pp. 955-969 ◽  
Author(s):  
Sara E. Miller ◽  
Milo Adkison ◽  
Lewis Haldorson
Keyword(s):  
Water Column ◽  
Growth Condition ◽  
Pink Salmon ◽  
Gulf Of Alaska ◽  
Oncorhynchus Gorbuscha ◽  
Biological Parameters ◽  
Prince William Sound ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Fish Condition ◽  
Water Column Stability

Water column stability has been hypothesized to affect growth and ultimately survival of juvenile fish. We estimated the relationships between stability and the growth, condition, and marine survival of several stocks of pink salmon ( Oncorhynchus gorbuscha ) within Prince William Sound (PWS), Alaska, USA, and the northern coastal Gulf of Alaska (GOA) shelf. There was a stronger correlation among the biological parameters of the fish than between the biological parameters and physical conditions. While stability and fish condition during early marine residence in PWS were important to year-class survival, stability of the water column that juveniles experienced as they migrated to the open waters of the GOA did not play a key role in determining survival to adulthood. Below-average stability just prior to capture within PWS combined with positive fish condition was related to increased year-class survival. Our results are similar to previous studies that concluded that slower and weaker development of stratification with a deeper mixed layer depth may be important for juvenile pink salmon survival in PWS.

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