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

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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Annual growth rings, rainfall‐dependent growth and long‐term growth patterns of tropical trees from the Caparo Forest Reserve in Venezuela

Journal of Ecology ◽

10.1046/j.1365-2745.1999.00361.x ◽

1999 ◽

Vol 87 (3) ◽

pp. 391-403 ◽

Cited By ~ 209

Author(s):

Martin Worbes

Keyword(s):

Tropical Trees ◽

Growth Patterns ◽

Annual Growth ◽

Growth Rings ◽

Forest Reserve ◽

Annual Growth Rings ◽

Dependent Growth

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PERTUMBUHAN LINGKARAN POHON JATI PADA DUA SISTEM KULTUR BERBEDA DI JAWA TIMUR

Jurnal Natural ◽

10.30862/jn.v6i2.683 ◽

2008 ◽

Vol 6 (2) ◽

Author(s):

Iriwi Louisa S. Sinon

Keyword(s):

Tree Ring ◽

Tectona Grandis ◽

Annual Growth ◽

Natural Growth ◽

Growth Rings ◽

Climate Effect ◽

Tropical Regions ◽

Annual Growth Rings ◽

Chronological Sequence ◽

Plantation Teak

<p><em>Study dendrochronology or tree-ring dating is defined as the study of chronological sequence of annual growth rings in trees. Teak (Tectona grandis) is one of various tree species that has been identified for the use of tree-ring studies in tropical regions. Teak is found to be suitable for dendrochronology as it is long-lived and develops defined annual growth rings. In Java, teak cans growth naturally or intensively in plantation. The two silviculture conditions will give different sensitivity on climate effect. Therefore, the effect of silviculturer will on natural teak and plantation teak in Saradan, Madiun, and East Java. As a part of the study, ten core samples from natural- growth teak were measured. The samples of growth rings is spanned from 1832 – 2004. Using the COFECHA program, the correlation of the samples (r) was found to be 0.44 point, which is satisfactory to the standard used in dendrochronology. Thus, from this study it can be concluded that natural teak could still be used in dendrochronology, although the sensitivity are not as high as plantation teak. </em></p>

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Evaluation of the historical records of lead pollution in the annual growth rings and bark pockets of a 250-year-old Quercus crispula in Nikko, Japan

The Science of The Total Environment ◽

10.1016/s0048-9697(02)00054-2 ◽

2002 ◽

Vol 295 (1-3) ◽

pp. 91-100 ◽

Cited By ~ 34

Author(s):

David J Bellis ◽

Kenichi Satake ◽

Masato Noda ◽

Naoki Nishimura ◽

Cameron W McLeod

Keyword(s):

Annual Growth ◽

Lead Pollution ◽

Historical Records ◽

Growth Rings ◽

Quercus Crispula ◽

Annual Growth Rings

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Evaluation of a direct age estimation method for terminally molted male snow crab Chionoecetes opilio (Fabricius 1788) (Decapoda: Brachyura: Oregoniidae)

Journal of Crustacean Biology ◽

10.1093/jcbiol/ruaa043 ◽

2020 ◽

Vol 40 (5) ◽

pp. 549-555

Author(s):

April L Rebert ◽

Gordon H Kruse ◽

Joel B Webb ◽

Sherry L Tamone ◽

Dion Oxman ◽

...

Keyword(s):

Fishery Management ◽

Estimation Method ◽

Growth Patterns ◽

Annual Growth ◽

Snow Crab ◽

Gastric Mill ◽

Age Composition ◽

Thin Sections ◽

Chionoecetes Opilio ◽

Growth Increments

Abstract Recent research suggests that calcified eyestalks and gastric mill ossicles (stomach teeth) can be used to estimate the age of some crustacean species. Along with annual growth of the endocuticle, bipartite bands in the hard tissue are believed to reflect annual growth patterns (similar to fish scales or otoliths) that are retained through repeated molt cycles. Similar bands are observed in the zygocardiac ossicles of the gastric mill from the snow crab (Chionoecetes opilioFabricius 1788). If these bands reflect annual growth, they may be used to estimate age, which could enhance understanding growth, mortality, recruitment, and age composition and improve fishery management. While some studies show that the number of bands correlates to other estimates of age for C. opilio, little evidence suggests that bands accumulate annually as growth increments independent of molting. Male C. opilio terminally molt at maturity, after which they can survive for seven years or more. Shell condition, i.e., degree of wear and epibionts on their exoskeleton, is used here and by other carcinologists as a proxy for age subsequent to the terminal molt. We estimated band counts and endocuticle thickness from thin sections of the zygocardiac ossicle of terminally molted male C. opilio across a range of shell conditions from a wild, fished stock. We found no differences in band counts (P = 0.41) or endocuticle thickness (P = 0.13) across varying shell conditions and size. These results do not support the hypothesis that band counts can be used to estimate the age of this species after the terminal molt.

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Annual Growth Rings in Two Mangrove Species from the Sundarbans, Bangladesh Demonstrate Linkages to Sea-Level Rise and Broad-Scale Ocean-Atmosphere Variability

Wetlands ◽

10.1007/s13157-018-1079-5 ◽

2018 ◽

Vol 38 (6) ◽

pp. 1159-1170 ◽

Cited By ~ 4

Author(s):

Justin T. Maxwell ◽

Grant L. Harley ◽

Abdullah F. Rahman

Keyword(s):

Sea Level Rise ◽

Sea Level ◽

Annual Growth ◽

Growth Rings ◽

Mangrove Species ◽

Annual Growth Rings ◽

Ocean Atmosphere ◽

The Sundarbans ◽

Broad Scale

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

Neotropical Ichthyology ◽

10.1590/1982-0224-20170130 ◽

2018 ◽

Vol 16 (1) ◽

Cited By ~ 7

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.

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Magnetic resonance imaging of wood

Canadian Journal of Forest Research ◽

10.1139/x86-078 ◽

1986 ◽

Vol 16 (2) ◽

pp. 423-426 ◽

Cited By ~ 28

Author(s):

Laurance D. Hall ◽

Vasanthan Rajanayagam ◽

Wendy A. Stewart ◽

Paul R. Steiner

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Structural Features ◽

Annual Growth ◽

Resonance Imaging ◽

Growth Rings ◽

Magnetic Resonance Scanner ◽

Annual Growth Rings ◽

Do So

A magnetic resonance scanner has been used to obtain images at 0.14 T, based on the water in aspen (Populustremuloides Michx.). In addition to visualization of the expected structural features such as annual growth-rings and knots, several additional features appear that require further study. Kiln-dried wood does not contain sufficient water to give an image, but can do so after impregnation with water.

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