scholarly journals Otolith size—fish size relations in the jewel lanternfish, Lampanyctus crocodilus (Actinopterygii: Myctophiformes: Myctophidae), from deepwater environment of the southern Aegean Sea

2013 ◽  
Vol 43 (4) ◽  
pp. 293-296 ◽  
Author(s):  
Gökçen Bilge
Keyword(s):  
Aegean Sea ◽  
Fish Size ◽  
Otolith Size

Otolith and fish size relationships, measurement error, and size-selective mortality during the early life of Atlantic salmon (Salmo salar)

1998 ◽  
Vol 55 (7) ◽  
pp. 1663-1673 ◽  
Author(s):  
M G Meekan ◽  
J J Dodson ◽  
S P Good ◽  
DAJ Ryan
Keyword(s):  
Measurement Error ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Data Sets ◽  
Regression Analyses ◽  
Fish Size ◽  
Atlantic Salmon Salmo Salar ◽  
Weak Relationship ◽  
Growth Increments ◽  
Otolith Size

The development of the relationship between otolith and body size in Atlantic salmon (Salmo salar) between hatching and emergence was examined by repeatedly measuring individually identified fish. Otolith growth increments were deposited daily in the period between hatching and emergence. Comparison of back-calculated otolith size and standard length using least squares regression analyses revealed a weak relationship between these variables at each of the 5-day sampling intervals. However, when data sets were pooled among intervals, variation in otolith size accounted for 98% of the variation in alevin length. A computer simulation demonstrated that levels of measurement error similar to those documented in our study resulted in the failure of regression analyses to detect strong relationships between otolith and fish size. Mortality that occurred during the experiment was strongly size selective. This truncated the size ranges of fish in cross-sectional data sets and thus reduced the ability of regression analysis to detect relationships between otolith and fish size. We propose that the weak relationship between otolith and fish size at emergence recorded in previous studies was an artifact of measurement error and the truncation of size ranges in regression analyses. Differences in alevin size at emergence were present at hatching and had been propagated by growth.

Relationships between fish size and otolith size of four bathydemersal fish species from the south eastern Arabian Sea, India

2017 ◽  
Vol 33 (1) ◽  
pp. 102-107 ◽  
Author(s):  
K. V. Aneesh Kumar ◽  
K. P. Deepa ◽  
M. Hashim ◽  
C. Vasu ◽  
M. Sudhakar
Keyword(s):  
Fish Species ◽  
Arabian Sea ◽  
The South ◽  
Fish Size ◽  
South Eastern ◽  
Eastern Arabian Sea ◽  
Otolith Size

Somatic Growth Effects on the Otolith–Fish Size Relationship in Young Pond-reared Striped Bass, Morone saxatilis

1989 ◽  
Vol 46 (1) ◽  
pp. 113-121 ◽  
Author(s):  
David H. Secor ◽  
John Mark Dean
Keyword(s):  
Growth Rate ◽  
Striped Bass ◽  
Somatic Growth ◽  
Morone Saxatilis ◽  
Fish Length ◽  
Fish Size ◽  
Somatic Growth Rate ◽  
Size Relationship ◽  
Highly Correlated ◽  
Otolith Size

Somatic growth rate of pond-reared larval and juvenile striped bass, Morone saxatilis, influenced the relationship between otolith size and fish size. Slower growing groups of individuals had larger and heavier otoliths, relative to fish length, than did faster growing groups. Within each growth group, otolith and fish size were highly correlated. Daily increment formation was validated from 10 to 51 d after hatch. Significant interaction occurred between age and fish size effects on otolith size. We propose that otolith growth occurs by two interacting processes. Otoliths grow daily in an incremental manner which is independent of somatic growth. Growth also proceeds continuously within each daily cycle of increment deposition, probably in some proportion to daily somatic growth. Corollaries to the hypotheses are (1) somatic growth rate can influence the otolith–fish size relationship, (2) intraspecific variation in otolith scaling might be used to predict past differences in somatic growth rate, and (3) there is a biological rationale for the use of otolith size and fish size as predictors in age estimation.

The relationship between fish size and otolith dimensions of stargazer (Uranoscopus scaber) in the south-eastern Black Sea

2014 ◽  
Vol 94 (5) ◽  
pp. 1041-1045 ◽  
Author(s):  
N. Erdoğan Sağlam ◽  
C. Sağlam ◽  
Y. Demir Sağlam
Keyword(s):  
Black Sea ◽  
Correlation Coefficients ◽  
Fish Size ◽  
South Eastern ◽  
Coastal Shelf ◽  
Body Sizes ◽  
Length Width ◽  
The Relationship ◽  
Uranoscopus Scaber ◽  
Otolith Size

Relations between fish size and otolith size of stargazer (Uranoscopus scaber) were studied in this study. A total of 268 samples were obtained from the coastal shelf of Ordu Province (south-eastern Black Sea) by commercial trawling and gillnetting operations. It was found that there were high correlations between fish size and otolith size. It was concluded that all measurable body sizes could be effectively used to estimate otolith length, width and weight. Similarly, estimation of the age of fish from otolith length and weight was also possible with high significance. The results of this research will be useful for others working on this fish, being a first study in the field. The ages of stargazer were determined between 0+ and 4+. Relationships were determined as OW = 0.001 × OWi2.76, OW = 0.35 × 10−3 × OL2.54 with high correlation coefficients of r = 0.965 and r = 0.949, respectively.

scholarly journals The relationship between fish length and otolith size and weight of Acanthopagrus arabicus Iwatsuki, 2013 (Sparidae) collected from the Iraqi marine waters

2021 ◽  
Vol 20 (1) ◽  
pp. 27-34
Author(s):  
Laith Jawad ◽  
◽  
Audai Qasim ◽  
Faleh Musa Al-Zaidy ◽  
Baradi Waryani ◽  
...  
Keyword(s):  
Linear Models ◽  
Arabian Gulf ◽  
Fish Length ◽  
Marine Waters ◽  
Fish Size ◽  
Length Width ◽  
Relationship Of ◽  
The Relationship ◽  
Otolith Size

Fish specimens (n=75) of A. arabicus were collected from the marine waters of Iraq at Khor al-Zubair. Collection was conducted in the period February–September 2019 at depth of 10–25 m. Relationships between fish length and otolith length, width and weight were calculated for the Arabian yellowfin seabream, Acanthopagrus arabicus using linear models. This study represents the first data available on the relationship of fish size and otolith size and weight for A. arabicus in the Arabian Gulf area. The various relationships between fish length otolith length, width and weight were calculated: Y = -1E – 0.06X2 + 0.0106X + 5.2628, Y = 4E – 06X2 + 0.0077X + 2.1834, and Y = 9E – 07X2 + 0.0013X – 0.191 respectively.

scholarly journals Biometric relationships between body size and otolith size in 15 demersal marine fish species from the northern Brazilian coast

2019 ◽  
Vol 49 (4) ◽  
pp. 299-306
Author(s):  
Rory Romero de Sena OLIVEIRA ◽  
Marcelo Costa ANDRADE ◽  
Fabiola Seabra MACHADO ◽  
Élida Jesana Santana CUNHA ◽  
Flaviane Souto de FREITAS ◽  
...  
Keyword(s):  
Stomach Contents ◽  
Coefficient Of Determination ◽  
Brazilian Coast ◽  
Marine Fish Species ◽  
Fish Size ◽  
Total Length ◽  
Marine Predators ◽  
Sagittal Otolith ◽  
First Time ◽  
Otolith Size

ABSTRACT The relationships between fish size and sagitta otolith measurements were calculated for the first time for 15 species belonging to six families from the northern Brazilian coast. A total of 220 fish were sampled from the bycatch landed by the bottom-trawl industrial shrimp-fishing fleet between August and September 2016. All species had strong relationships between otolith measurements and fish total length with the coefficient of determination (r 2) ranging between 0.71 and 0.99. The variable most strongly related to fish total length was found to be the sagittal otolith length (OL) with 98% of the variability. These relationships are a useful tool to estimate length and mass of preyed fish from otoliths found in stomach contents of marine predators.

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