A review on the relationship between the fish length and otolith biometry

The total mercury content of six species of Australian commercial fish (John dory. Zeus faber: mirror dory. Zenopsis nebulosus; tiger flathead, Neoplatycephalus richardsoni; rubberlip morwong, Nemadactylus douglasii; jackass morwong, Nemadactylus macroprerus; and sand whiting, Sillago ciliata) is reported. Total mercury content is regressed against fish length and the resultant equations and correlation coefficients are presented for each species. A length-frequency histogram derived from the Sydney Fish Market data and a length-mercury content curve are plotted as an overlay for each of the six species. The integrated average mercury content (mg/kg) has been calculated for each species and these are as follows: sand whiting, 0.08; rubberlip morwong, 0.13; tiger flathead, 0.14; John dory, 0.14; mirror dory, 0.15; and jackass morwong, 0.16. The graphical method adequately demonstrates the relationship between mercury levels and the commercial size range of particular species.

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The influence of pre-recruitment growth on subsequent growth and age at first spawning in Atlantic herring (Clupea harengus L.)

ICES Journal of Marine Science ◽

10.1016/s1054-3139(03)00122-x ◽

2003 ◽

Vol 60 (5) ◽

pp. 1103-1113 ◽

Cited By ~ 16

Author(s):

Deirdre Brophy ◽

Bret S Danilowicz

Keyword(s):

Clupea Harengus ◽

First Year ◽

Fish Length ◽

Subsequent Growth ◽

Differential Growth ◽

Stock Biomass ◽

Spawning Stock ◽

Group Spawning ◽

First Year Of Life ◽

The Relationship

Abstract Calculation of the spawning stock biomass for fisheries management requires information on the numbers or proportions of fish in each age- or length-group that are mature each year. This study was conducted to determine the relationship between growth and age of first reproduction in herring stocks around Ireland. Measurements of otolith size at the onset of the first annulus (O1) were used to compare growth during the first year of life between 1-, 2-, and 3-group spawning herring collected from spawning grounds in the Celtic Sea over a period of 3 years. The 1-group spawning fish had significantly greater mean O1 measurements, and hence showed faster growth on average during the first year of life than 2- or 3-group spawning fish. Fish that exhibited slow growth during the first year were absent from the adult spawning population at age 1, but occurred at similar levels in the samples of 2- and 3-group spawning fish. Regression of O1 radius on fish length at capture showed that growth during the first year of life had a small but significant effect on subsequent growth up to age 3. The relationship between pre-recruitment growth and subsequent growth and age at first spawning has implications for recruitment patterns of juveniles from different nursery areas and for the lifetime fecundity of population components with differential growth.

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Relationship between Fish Length and Otolith Morphological Characteristics of Sargocentron spiniferum (Forsskål, 1775) from the Southern Red Sea

10.20944/preprints202104.0092.v1 ◽

2021 ◽

Author(s):

Yassein A. A. Osman ◽

Kélig Mahé ◽

Samia M. El-Mahdy ◽

Ashraf S. Mohammad ◽

Sahar Mehanna

Keyword(s):

Red Sea ◽

Linear Models ◽

Morphological Characteristics ◽

Fish Stock ◽

Fish Length ◽

Shape Factors ◽

Morphometric Features ◽

Otolith Morphology ◽

Length Width ◽

The Relationship

Otolith morphology analysis is one of the main tools used for fish or fish stock identification. Moreover, otolith shape can also be used in fish dietary studies (stomach content) for the identification of prey fishes and their size according to the relationship between fish and otolith sizes. In the present study, the relationship between fish length and otolith morphological dimensions was investigated for the sabre squirrelfish, Sargocentron spiniferum (Forsskål, 1775) (family: Holocentridae). Samples of 185 fish were collected from the coast of the Red Sea, Egypt. To analyze the relationship between fish and otolith, otolith morphometric measurements (length, width, area, perimeter, weight, sulcus, and ostium) and shape factors (aspect ratio, compactness, form factor, rectangularity, roundness, ellipticity, squareness) describing outline shape were extracted using image analysis. Generalized linear models were applied for the relationship between body length and each otolith morphology feature. From the relationships between the total length of fish and fourteen morphology features, only otolith length, caudal length, and squareness were significantly correlated with fish size. Our results provide more information for the relationship between fish length and otolith morphometric features.

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Age, Spawning Time, and Fecundity of Australian Herring (Arripis georgianus C. & V.) (Pisces : Arripidae) from the Waters around Rottnest Island, Western Australia

Marine and Freshwater Research ◽

10.1071/mf9780599 ◽

1978 ◽

Vol 29 (5) ◽

pp. 599 ◽

Cited By ~ 2

Author(s):

RCJ Lenanton

Keyword(s):

Western Australia ◽

Fish Length ◽

Spawning Time ◽

Males And Females ◽

The Relationship

Scales and ovarian material were examined from Australian herring taken from the amateur line fishery in waters off Rottnest Island, W.A., over the period 28 March to 23 June 1973. The age-length distributions of a number of samples of both males and females are presented. Those fish sampled were predominantly 3+ years old. Resting or undeveloped ova were translucent and less than 0.1 mm in diameter. Developing ova were opaque and greater than 0.1 mm in diameter. Mature or ripe ova were translucent, slightly elliptical, unpigmented with a central oil globule, and were between 0.6 and 1.1 mm in diameter. Spawning was deduced to have occurred during early June. Most fish taken during the 1973 amateur fishery were in an immediate prespawning condition. Only one of the 516 females examined had ovaries containing ripe ova. The equation F = 298 L1.924 describes the relationship between estimated fecundity (F) and fish length (L).

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Progress in determining southern blue whiting (Micromesistius australis) target strength: results of swimbladder modelling

ICES Journal of Marine Science ◽

10.1016/j.icesjms.2005.12.011 ◽

2006 ◽

Vol 63 (5) ◽

pp. 952-955 ◽

Cited By ~ 3

Author(s):

Adam J. Dunford ◽

Gavin J. Macaulay

Keyword(s):

Gadus Morhua ◽

Stock Assessment ◽

Laser Scanner ◽

Fork Length ◽

Sensitivity Analyses ◽

Target Strength ◽

Fish Length ◽

Angle Distribution ◽

Blue Whiting ◽

The Relationship

Abstract Southern blue whiting target strength (TS) results from Kirchhoff modelling of swimbladder casts scanned using a hand-held 3D laser scanner are presented. The data are compared with the relationship between TS and fish length used for New Zealand stock-assessment surveys; TS = 21.8 log10(fork length) − 72.8, at 38 kHz. This relationship has its origins in the relationship used for blue whiting (Micromesistius poutassou) in the northern hemisphere, and is based on measurements on juvenile cod (Gadus morhua). The results indicate that the blue whiting relationship is not appropriate for southern blue whiting, and suggest a much steeper slope, with TS = 38 log10(fork length) − 97, at 38 kHz. Sensitivity analyses indicate that further investigations of swimbladder tilt-angle distribution and swimbladder volume are unlikely to provide evidence to support the use of the blue whiting relationship for southern blue whiting.

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Larval Fish Age, Growth, and Body Shrinkage: Information Available from Otoliths

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f89-237 ◽

1989 ◽

Vol 46 (11) ◽

pp. 1884-1894 ◽

Cited By ~ 29

Author(s):

Richard L. Radtke

Keyword(s):

Growth Rate ◽

Gadus Morhua ◽

Atlantic Cod ◽

Larval Fish ◽

Quadratic Function ◽

Age And Growth ◽

Fish Length ◽

Elapsed Time ◽

Developmental Rates ◽

The Relationship

External and internal examination of Atlantic cod (Gadus morhua) otoliths for macrostructure and microstructure, by light and scanning electron microscopy, indicated daily rhythmic patterns. The first daily increment developed the day after hatching. Sagittae changed shape from spherical to oblong at 20 d and to crenulated at 50−60 d old. Cod were reared at three temperatures (6,8 and 10 °C), to provide a range of growth and developmental rates. Distinctive marks formed at yolk-sac absorption, initiation of feeding and settlement. It was possible to determine age and growth rate from otolith analyses. The relationship between otolith length and fish size was independent of growth rate; it followed a quadratic function for the smaller individuals (< 6.5 mm), and it was linear in individuals greater than 25 mm. Larval fish shrank considerably at death. The magnitude of shrinkage was dependent on larval length, and the elapsed time between death and fixation. Immediate fixation in ethanol resulted in minimal shrinkage. The relationship between fish length and otolith diameter may be used to correct for shrinkage associated with collection and death.

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On the Age, Growth, Migration, Reproductive Potential and Feeding Habits of the Arctic Char (Salvelinus alpinus) of Frobisher Bay, Baffin Island

Journal of the Fisheries Research Board of Canada ◽

10.1139/f53-023 ◽

1953 ◽

Vol 10 (6) ◽

pp. 326-370 ◽

Cited By ~ 59

Author(s):

E. H. Grainger

Keyword(s):

Salvelinus Alpinus ◽

Feeding Habits ◽

Age Determination ◽

Reproductive Potential ◽

Arctic Char ◽

The Arctic ◽

Small Samples ◽

Fish Length ◽

Food Species ◽

The Relationship

The Arctic char (Salvelinus alpinus Linn.) was studied, in the summers of 1948, 1950 and 1951, about the mouth of the Sylvia Grinnell River, Frobisher Bay, Baffin Island.Otoliths are shown to be reliable age indicators and are used for age determination. Because of deficiencies in the sampling of the fish a calculated growth curve has been constructed. The calculated growth rate is obtained by showing the relationship between otolith width and fish length and expressing it in the equation: log (fish length) = −1.503 + 1.982 log (otolith width). The relationship between otolith ring diameter and fish age is demonstrated, and from these two relationships the lengths of fish at earlier ages are calculated.The char grow very slowly, and reach an age of more than 24 winters. They migrate to the sea in late June and return to fresh water from late July until September. The first movements to the sea probably occur during the fifth, sixth and seventh summers. Sexual maturity in the females is reached at a length of about 45 cm., and at an age of approximately 12 winters. Egg counts of maturing fish averaged 3,589. Only about 33 per cent of the females over 45 cm. were maturing. At least 30 food species were found in the stomachs.Additional growth, fecundity and food studies were made on small samples from George River, Herschel Island and Adlorilik.

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

Acta Scientiarum Polonorum Zootechnica ◽

10.21005/asp.2021.20.1.03 ◽

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.

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Relationship between Body and Otolith Morphological Characteristics of Sabre Squirrelfish (Sargocentron spiniferum) from the Southern Red Sea: Difference between Right and Left Otoliths

Oceans ◽

10.3390/oceans2030035 ◽

2021 ◽

Vol 2 (3) ◽

pp. 624-633

Author(s):

Yassein A. A. Osman ◽

Kélig Mahé ◽

Samia M. El-Mahdy ◽

Ashraf S. Mohammad ◽

Sahar F. Mehanna

Keyword(s):

Red Sea ◽

Linear Models ◽

Morphological Characteristics ◽

Fish Stock ◽

Fish Length ◽

Shape Factors ◽

Morphometric Features ◽

Otolith Morphology ◽

Length Width ◽

The Relationship

Otolith morphology analysis is one of the main tools used for fish or fish stock identification. Moreover, otolith shape can also be used in animal dietary studies (stomach content) for the identification of prey fishes and their size according to the relationship between fish and otolith sizes. In the present study, the relationship between fish length and otolith morphological dimensions was investigated for the sabre squirrelfish, Sargocentron spiniferum (Forsskål, 1775) (family: Holocentridae). Samples of 185 fish were collected from the coast of the Red Sea, Egypt. To analyze the relationship between fish and otolith, otolith morphometric measurements (length, width, area, perimeter, weight, sulcus, and ostium) and shape factors (aspect ratio, compactness, form factor, rectangularity, roundness, ellipticity, squareness) describing the outline shape were extracted using image analysis. Generalized linear models were applied for the relationship between body length and each otolith morphology feature. From the relationships between the total length of fish and fourteen morphology features, only otolith length, caudal length, and squareness were significantly correlated with fish size. Our results provide more information for the relationship between fish length and otolith morphometric features.

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A method for evaluating the effects of biological factors on fish target strength

ICES Journal of Marine Science ◽

10.1016/s1054-3139(03)00053-5 ◽

2003 ◽

Vol 60 (3) ◽

pp. 555-562 ◽

Cited By ~ 47

Author(s):

Elliott L Hazen ◽

John K Horne

Keyword(s):

Target Strength ◽

Comparative Approach ◽

Theragra Chalcogramma ◽

Fish Length ◽

Biological Factors ◽

Backscatter Intensity ◽

Relative Contribution ◽

Walleye Pollock Theragra Chalcogramma ◽

Improving Accuracy ◽

The Relationship

Abstract Understanding the relationship between fish biology and target strength potentially improves the accuracy of acoustic assessments. The effects of individual biological factors (e.g., length, tilt, and depth) on backscatter amplitude have been examined, but the relative contribution of each factor has not been quantified. Dimensionless ratios, which facilitate comparison of disparate quantities, were used to evaluate the effects of individual biological factors on echo intensities. Ratios from 25 adult walleye pollock (Theragra chalcogramma) were calculated using a Kirchhoff-ray-mode, backscatter model parameterized for each fish. This comparative approach can be used to identify the influence of biological factors on backscatter intensity and is potentially a tool for improving accuracy when converting acoustic size to fish length.

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