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A new approach to validation of periodicity and timing of opaque zone formation in the otoliths of eleven species of Lutjanus from the central Great Barrier Reef


, : A new approach to validation of periodicity and timing of opaque zone formation in the otoliths of eleven species of Lutjanus from the central Great Barrier Reef. Fishery Bulletin (Washington D C) 98(3): 474-488, July

A model was proposed for validation studies of the periodicity and timing of growth checks on fish otolith sections, based on measurements of otolith radii around tetracycline (OTC) marks. Continuous variables were obtained by expressing measurements of the marginal increment and distance between the OTC mark and the subsequent opaque zone as "fractions" of the width of a completed increment cycle within an otolith. The sum of these fractions and the counts of whole cycles completed outside the OTC mark, divided by the known time at liberty, produced estimates of the periodicity of opaque zone completion. Given this rate of completion and known dates of OTC marking and sacrifice, the marginal increment was used to estimate a date on which the outermost opaque zone was completed. The model was applied to 82 marked fish of 11 Lutjanus species recovered after 6-22 months at liberty, and an hypothesis of annual periodicity, about a mean of 0.96+-0.32 cycles/yr, was retained for the pooled species along the best, ventral reading axis. Model estimates for L. erythropterus, L. johnii, L. malabaricus, and L. sebae were in the range of 0.78+-0.22 cycles/yr to 1.03 +- 0.29 cycles/yr along this axis. Median ages of these fish were 3+ for L. erythropterus and L. sebae and 5+ for L. johnii. A two-fold difference in somatic and otolith growth detected between field-tagged and captive fish did not affect periodicity. Extension of the model suggested false annuli were induced by changes in salinity or adverse weather. On average, annuli were completed within 1-3 months after the minima in water temperature, in the austral spring-early summer, around early September for L. erythropterus and L. johnii, late September for L. malabaricus and late October for L. sebae. Results from the model were only preliminary for the small samples of L. argentimaculatus, L. bohar, L. carponotatus, L. monostigma, L. rivulatus, and L. vitta, although the common validation approach indicated annual periodicity of opaque zone completion for these species.

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Olbrich, H.; Proudfoot, A.E.; Oppermann, M., 1999: Chemokine-induced phosphorylation of CC chemokine receptor 5 (CCR5). The CC-chemokine receptor 5 (CCR5) mediates activation of T lymphocytes and macrophages by chemokines and is a major co-receptor for macrophage-tropic HIV-1 strains. Recently, it was shown that the natural CCR5 ligands RANTES, macrophage inflammat...

Hall, T.S., 1905: On the occurrence of two species of Cryptoplax in the Tertiary Rocks of Victoria. P Soc Victoria, XVII 391-393

Arrese, C.A.; Oddy, A.Y.; Runham, P.B.; Hart, N.S.; Shand, J.; Hunt, D.M.; Beazley, L.D., 2005: Cone topography and spectral sensitivity in two potentially trichromatic marsupials, the quokka (Setonix brachyurus) and quenda (Isoodon obesulus). The potential for trichromacy in mammals, thought to be unique to primates, was recently discovered in two Australian marsupials. Whether the presence of three cone types, sensitive to short- (SWS), medium- (MWS) and long- (LWS) wavelengths, occur...

Lisansky S.G.; Galston A.W., 1976: Phytochrome stability in vitro part 2 a low molecular weight protective factor. Plant Physiology (Rockville) 57(2): 188-191

Wu, C.; Peng, Z.; Ben-Zion, Y., 2010: Refined thresholds for non-linear ground motion and temporal changes of site response associated with medium-size earthquakes. We systematically analyse non-linear effects and temporal changes of site response associated with medium-size earthquakes, using seismic data recorded by the Japanese Strong Motion Network KIK-Net. We apply a sliding-window spectral ratio techniq...

Jeanmart, L.; Rétif, J.; Brihaye, J., 1970: Cauda equina syndrome caused by tumoral and diskal compression: contribution of myelographic examination. Journal de Radiologie, D'electrologie, et de Medecine Nucleaire 51(10): 561-566

Hashimoto, M.; Hotokezaka, H.; Sirisoontorn, I.; Nakano, T.; Arita, K.; Tanaka, M.; Yoshida, N., 2014: The effect of bone morphometric changes on orthodontic tooth movement in an osteoporotic animal model. To elucidate the effect of bone morphometric changes on orthodontic tooth movement (OTM) in zoledronic acid-treated ovariectomized rats. Twenty-one 10-week-old female Wistar rats were divided into ovariectomy (OVX), OVX with zoledronic acid admini...

Ghisoli E.; Benfenati F.; Pancaldi L.; Meringolo D.; Catenacci M., 1980: Effects of dopaminergic receptor stimulation and opioid receptor blockade on growth hormone secretion preliminary findings. The effects of CB 154 [2-bromo-.alpha.-ergocryptine] (2.5 mg orally) and naloxone (0.4 mg i.m.) on GH levels in normal human serum are described. Preliminary results point to a clear potentiation of GH release when the opiate receptor blockade is...

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