Validation of Daily Growth increments in Otoliths form Thrysa aestuaria (Ogilby), a tropical Anchovy from Northern Australia

1992 ◽  
Vol 43 (5) ◽  
pp. 1043 ◽  
Author(s):  
FE Hoedt
Keyword(s):  
Growth Parameters ◽  
Age And Growth ◽  
Tetracycline Hydrochloride ◽  
Northern Australia ◽  
Growth Rings ◽  
Daily Growth ◽  
Growth Increments ◽  
Single Cohort

Age and growth parameters were determined for the tropical anchovy Thryssa aestuaria from northern Queensland, Australia. Larval and juvenile forms of T. aestuaria, believed to be a single cohort recruited in the spring of 1990, were sampled between October 1990 and January 1991. Counts of growth rings in sagittal otoliths were determined for specimens from three of these samples. Comparisons of the different ring counts of fish from successive samples with the number of days elapsed between samples suggested that the growth rings examined were deposited daily. Two specimens of T. aestuaria marked with tetracycline hydrochloride in aquaria were found to deposit growth rings in the sagitta at a rate of one ring per day. Problems associated with reading daily growth rings in tropical anchovies are discussed in light of the results of this study. Growth in T. aestuaria is discussed in relation to reported growth information for other species of tropical anchovies.

Age and growth of the narrow-barred Spanish Mackerel (Scomberomorus commerson Lacepede, 1880) in North-eastern Queensland waters

1992 ◽  
Vol 43 (5) ◽  
pp. 1269 ◽  
Author(s):  
GR McPherson
Keyword(s):  
Growth Parameters ◽  
Age And Growth ◽  
Differential Growth ◽  
Daily Growth ◽  
Spanish Mackerel ◽  
Growth Increments ◽  
Scomberomorus Commerson ◽  
North Eastern ◽  
Marginal Increment ◽  
Age Estimates

Whole otoliths were used to age Scomberomorus commerson in tropical Australian waters. Age estimates were validated by marginal-increment analysis of the first three otolith annuli. Confirmation of age estimates was provided by otolith daily growth increments and tag returns of known age. Differential growth in length, weight and longevity was evident between the sexes. The oldest male was 10 years old (127 cm FL, 19.0 kg). The oldest female was 14 years old (155 cm FL, 35 kg). The von Bertalanffy growth parameters L∞ and K were 127.5 cm and 0.25 for males and 155.0 cm and 0.17 for females.

scholarly journals Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams

2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Marília Hauser ◽  
Carolina R. C. Doria ◽  
Larissa R. C. Melo ◽  
Ariel R. Santos ◽  
Daiana M. Ayala ◽  
...  
Keyword(s):  
River Basin ◽  
Amazon Basin ◽  
Growth Parameters ◽  
Growth Patterns ◽  
Age And Growth ◽  
Growth Rings ◽  
Madeira River ◽  
Lower Maximum ◽  
Future Evaluation ◽  
Madeira River Basin

ABSTRACT The goliath catfish Brachyplatystoma rousseauxii has crucial economical and ecological functions in the Amazon basin. Although its life history characteristics have been studied in the Amazon, there is little information in the Madeira River basin, which holds genetically distinct populations and where dams were recently built. Using fish collected in Bolivia, Brazil and Peru, this study provides a validation of growth rings deposition and details the growth patterns of B. rousseauxii in the Madeira before the dams’ construction. Age structure and growth parameters were determined from 497 otolith readings. The species exhibits two growth rings per year and sampled fish were between 0 and 16 years old. In the Brazilian portion of the basin, mainly young individuals below 5 years old were found, whereas older fish (> 5 years) were caught only in the Bolivian and Peruvian stretches, indicating that after migrating upstream to reproduce, adults remain in the headwaters of the Madeira River. Comparing with previous publications, B. rousseauxii had a slower growth and 20 cm lower maximum standard length in the Madeira River than in the Amazon River. This study provides a baseline for future evaluation of changes in population dynamics of the species following dams closure.

scholarly journals Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil

2011 ◽  
Vol 101 (4) ◽  
pp. 304-309 ◽  
Author(s):  
Talitha M. Francisco ◽  
Angela Maria Ambrósio ◽  
Thiago José Balbi ◽  
Marina S. Zuliani ◽  
Edson K. Okada ◽  
...  
Keyword(s):  
Growth Curve ◽  
Growth Parameters ◽  
Temporal Variations ◽  
Age And Growth ◽  
Growth Rings ◽  
Study Region ◽  
Pectoral Fins ◽  
Von Bertalanffy Model ◽  
Marginal Increment ◽  
Males And Females

Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length was obtained by the von Bertalanffy model adjusted by the Ford-Walford transformation. The equations are: Ls = 72.7*[1-e-0.44(t+1.5974)] for males, and Ls = 84.5*[1-e-0.33(t+2.0943)] for females. The equations that describe the growth curve in weight are: Wt = 4991.61*[1-e-0.44 (t+1.5974] 2.70 for males and Wt = 7503.17*[1-e-0.33 (t+2.0943] 2.99 for females.

Age and growth of the queen scallop, Equichlamys bifrons, in the D'Entrecasteaux Channel and Huon River Estuary, Tasmania

1995 ◽  
Vol 46 (8) ◽  
pp. 1127 ◽  
Author(s):  
BM Wolf ◽  
RWG White
Keyword(s):  
Growth Parameters ◽  
Growth Ring ◽  
Shell Growth ◽  
River Estuary ◽  
Growth Patterns ◽  
Age And Growth ◽  
Growth Rings ◽  
Size Frequency Distribution ◽  
Size Frequency ◽  
Deep Bay

Growth of the queen scallop, Equichlamys bifrons, was examined at one site in the D'Entrecasteaux Channel and two sites in the Huon River estuary (Tasmania) by analysing growth rings on the shell and shell hinge ligament, tagging scallops, and using size-frequency techniques. Regular sampling of scallops revealed that shell growth of E. bifrons is seasonal, commencing in late spring and stopping in late autumn. During the remainder of the year, when the water temperature is below ~13�C, shell growth slows or stops and growth rings are formed on the shell and shell hinge ligament. The growth rings on the shell and hinge ligament of E. bifrons were verified as being annual by studying the growth of marked scallops. Long-term growth patterns were similar for E. bifrons from Middleton (D'Entrecasteaux Channel) and from Deep Bay (Huon River estuary). Tagging data collected over the 1992-93 growing season indicated short-term variation in growth between sites. Size-frequency distributions from Middleton and Deep Bay could not be interpreted because smaller scallops were scarce. Smaller size classes were present at Eggs and Bacon Bay (Huon River estuary) and the size-frequency distribution was resolved into age classes. Reasonable agreement was found between the von Bertalanffy growth parameters obtained from the size frequency, tagging, and growth ring data.

Age and growth of two commercially imported sharks (Carcharhinus tilstoni and C. sorrah) from Northern Australia

1988 ◽  
Vol 39 (4) ◽  
pp. 417 ◽  
Author(s):  
S Davenport ◽  
JD Stevens
Keyword(s):  
Growth Parameters ◽  
Age And Growth ◽  
First Year ◽  
Shark Species ◽  
Von Bertalanffy ◽  
Northern Australia ◽  
Length Frequency ◽  
Frequency Distributions ◽  
Gill Net ◽  
First Year Of Life

The age and growth of Carcharhinus tilstoni and C. sorrah, the two most abundant shark species in commercial gill-net catches off northern Australia, were investigated by the examination of vertebral rings. Corroborating evidence for age and growth estimates was obtained from length-frequency distributions and tag-recapture data. To aid validation of these estimates, tetracycline was injected into sharks at the time of tagging. Growth is relatively rapid in the first year of life: vertebral ageing indicated 17 cm growth in total length (TL) for C. tilstoni and about 20 cm for C. sorrah during the first year after birth. By the time the sharks are 5 years old, growth has declined to 8-10 cm per year in C. tilsoni and 5 cm per year or less in C. sorrah. The von Bertalanffy growth parameters for C. tilstoni are L∞ = 194.2, K = 0.14, t0 = -2.8 for females, and L∞ = 165.4, K = 0.19, t0 = -2.6 for males; for C. sorrah the parameters are L∞ = 123.9, K = 0.34, t0 = -1.9 for females, and L∞ = 98.4, K = 1.17, t0 = -0.6 for males. The greatest recorded ages for C. tilstoni were 12 years for females and 8 years for males, and for C. sorrah, 7 years for females and 5 years for males. Sexual maturity is reached early: at 3 to 4 years in C. tilstoni and 2 to 3 years in female C. sorrah.

Validation of daily growth increments in otoliths of Anguilla rostrata (Lesueur) elvers

1995 ◽  
Vol 73 (1) ◽  
pp. 208-211 ◽  
Author(s):  
Michael H. Martin
Keyword(s):  
Rhode Island ◽  
Tetracycline Hydrochloride ◽  
Anguilla Rostrata ◽  
Daily Growth ◽  
Growth Increments ◽  
Time Required ◽  
Hydrochloride Solution

The presence of daily growth increments in otoliths was validated for Anguilla rostrata. Elvers were captured at the freshwater–seawater interface of the Annaquatucket River, Rhode Island, immersed in a tetracycline hydrochloride solution to mark their otoliths, and maintained in stream aquaria for 10 or 20 d. Increment counts outside the tetracycline mark generally underestimated the number of days since marking by less than 5%. This underestimation was probably due to the time required for tetracycline incorporation after administration.

Age and growth of a large tropical anchovy, Thryssa hamiltoni (Gray): A comparison of ageing techniques

1992 ◽  
Vol 43 (5) ◽  
pp. 953 ◽  
Author(s):  
FE Hoedt
Keyword(s):  
Growth Patterns ◽  
Annual Growth ◽  
Age And Growth ◽  
Seasonal Growth ◽  
Length Frequency ◽  
Growth Rings ◽  
Handling Stress ◽  
Growth Increments ◽  
Annual Growth Rings ◽  
Ageing Methods

Three principal ageing methods were used to describe the growth history of Thryssa hamiltoni, a large tropical anchovy from the waters off Townsville, north-eastern Queensland. The study was undertaken to compare ageing methods based on length-frequency analysis that are commonly applied in age and growth studies of tropical clupeoids, with less commonly used methods based on daily and seasonal growth rings in otoliths. A preliminary study suggested that seasonal growth rings in the sagittae of T. hamiltoni were formed annually and were therefore useful for age estimations for this species. Age and growth estimates derived from the three methods were consistent, with the results of each method supporting the results of the others. Direct validation of daily growth increments in T. hamiltoni by means of tetracycline marking experiments was unsuccessful due to the sensitivity of this species to handling stress. The distribution of modes in length-frequency histograms, and age estimates based on annual growth rings, both showed that male and female T. hamiltoni exhibit different growth patterns, with females growing faster and attaining greater maximum lengths than do males. Although counts of annual growth rings suggest a maximum longevity of 4 years for both males and females, lengthfrequency data indicate that the population is largely comprised of fish up to 2 years of age.

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