Medaka

Kinoshita, Masato; Murata, Kenji; Naruse, Kiyoshi; Tanaka, Minoru

doi:10.1002/9780813818849

Cited by 184 publications

(133 citation statements)

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“…Here, we used 76 individuals belonging to the CAB strain from Carolina Biological Supply Company (Burlington, NC, USA; from AMAGEN, Gif-sur-Yvette, France) and WatchFrog (Evry, France). Fish of this standard strain present differences in the colour of eyes and other tissues (Loosli et al, 2000;Furutani-Seiki and Wittbrodt, 2004;Sasado et al, 2010;Kinoshita et al, 2009), but can be used in ecophysiological studies because their development characteristics are similar to those of the wildtype (Sasado et al, 2010;Lawrence et al, 2012). They were studied from 4 months old (mature) to 8 months old [almost the end of life at 27°C (Shima and Mitani, 2004;Leaf et al, 2011)].…”

Section: Biological Materials and Rearing Conditionsmentioning

confidence: 99%

Non-stressful temperature effect on oxidative balance and life history traits in adults fish (Oryzias latipes)

Hemmer-Brepson¹,

Replumaz

Romestaing

et al. 2013

Journal of Experimental Biology

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Temperature is well known to affect many biological and ecological traits, especially in ectotherms. From a physiological point of view, temperature is also positively correlated to metabolism and is often associated with an increase in reactive oxygen species (ROS) production. It has recently been suggested that ROS play a role in lifespan and resource allocation. However, only a few authors have attempted to explore the relationships between temperature, resource allocation and oxidative balance in ectotherms. Here, we measured the effect of temperature on growth, reproductive effort, offspring quantity and quality, hatching and survival rates, and the associated proximal costs, which were evaluated through the quantification of oxidative balance elements. We reared adult fish (Oryzias latipes) at two non-stressful temperatures (20 and 30°C) during a relatively long period (4 months, approximately the entire adult life). The results show a trade-off between reproduction and maintenance because investment toward growth could be neglected at the adult stage (confirmed by our results). Intriguingly, ROS-dependent damages did not differ between the two groups, probably because of the higher rate of activation of the antioxidant enzyme superoxide dismutase for warm-acclimated fish. The allocation toward antioxidant defences is associated with an earlier reproduction and a lower quality of offspring. These interesting results bring new perspectives in terms of the prediction of the impact of global warming on biota through the use of ecological theories based on oxidative balance and metabolism.

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Section: Biological Materials and Rearing Conditionsmentioning

confidence: 99%

Non-stressful temperature effect on oxidative balance and life history traits in adults fish (Oryzias latipes)

Hemmer-Brepson¹,

Replumaz

Romestaing

et al. 2013

Journal of Experimental Biology

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“…Recently, O. latipes has been used in laboratories as one of the most marked vertebrate model organisms to study genetics, normal body function, and diseases (Wittbrodi et al 2002;Iwamatsu 2006;Kinoshita et al 2009). Nagasawa et al (2012) suggested that this species has potential for investigating various aspects of a host-parasite relationship, and if Dactylogyrus oryziasi n. sp.…”

Section: Discussionmentioning

confidence: 99%

<i>Dactylogyrus oryziasi</i> n. sp. (Monogenea: Dactylogyridae) from <i>Oryzias latipes</i> (Beloniformes: Adrianichthyidae) in Japan

2017

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Dactylogyrus oryziasi n. sp. (Monogenea: Dactylogyridae) is described from the gills of the southern medaka Oryzias latipes (Temminck and Schlegel, 1846) (Beloniformes: Adrianichthyidae) collected from an irrigation canal, Tokushima city, Tokushima Prefecture, Shikoku, Japan. This new species resembles Dactylogyrus rysavyi Ergens, 1970 in having a coiled penis passing through a tube of an accessory piece associated with a sigmoid rod, and shapes of haptoral parts, but these species differ from each other by turns of the penis and a connection point between the rod and tube of the accessory piece. This is the first record of Dactylogyrus from beloniform fish.

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“…Following TCDD exposure, embryos were washed 4 times with 1Â ERM and cultured at 26-27 C with static media renewal every other day until hatch or until dechorionation at 9 days postfertilization (dpf). Briefly, embryos were dechorionated with 20-mg/ml pronase (EMD Millipore, Darmstadt, Germany) followed by incubation in hatching enzyme (Kinoshita et al, 2009). Hatched individuals were transferred to plastic containers containing 100 ml of 1X ERM, were fed 1-2 mg of ground Otohime B1 larval diet (Reed Mariculture, Campbell, California) daily, and media was renewed every other day until the termination of the experiment at 20 dpf.…”

Section: Methodsmentioning

confidence: 99%

From the Cover: Embryonic Exposure to TCDD Impacts Osteogenesis of the Axial Skeleton in Japanese medaka,Oryzias latipes

Watson¹,

Planchart

Mattingly

et al. 2016

Toxicol. Sci.

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Recent studies from mammalian, fish, and in vitro models have identified bone and cartilage development as sensitive targets for dioxins and other aryl hydrocarbon receptor ligands. In this study, we assess how embryonic 2,3,7,8-tetrachlorochlorodibenzo-p-dioxin (TCDD) exposure impacts axial osteogenesis in Japanese medaka (Oryzias latipes), a vertebrate model of human bone development. Embryos from inbred wild-type Orange-red Hd-dR and 3 transgenic medaka lines (twist:EGFP, osx/sp7:mCherry, col10a1:nlGFP) were exposed to 0.15 nM and 0.3 nM TCDD and reared until 20 dpf. Individuals were stained for mineralized bone and imaged using confocal microscopy to assess skeletal alterations in medial vertebrae in combination with a qualitative spatial analysis of osteoblast and osteoblast progenitor cell populations. Exposure to TCDD resulted in an overall attenuation of vertebral ossification characterized by truncated centra, and reduced neural and hemal arch lengths. Effects on mineralization were consistent with modifications in cell number and cell localization of transgene-labeled osteoblast and osteoblast progenitor cells. Endogenous expression of osteogenic regulators runt-related transcription factor 2 (runx2) and osterix (osx/sp7), and extracellular matrix genes osteopontin (spp1), collagen type I alpha I (col1), collagen type X alpha I (col10a1), and osteocalcin (bglap/osc) was significantly diminished at 20 dpf following TCDD exposure as compared with controls. Through global transcriptomic analysis more than 590 differentially expressed genes were identified and mapped to select pathological states including inflammatory disease, connective tissue disorders, and skeletal and muscular disorders. Taken together, results from this study suggest that TCDD exposure inhibits axial bone formation through dysregulation of osteoblast differentiation. This approach highlights the advantages and sensitivity of using small fish models to investigate how xenobiotic exposure may impact skeletal development.

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Medaka

Cited by 184 publications

References 0 publications

Non-stressful temperature effect on oxidative balance and life history traits in adults fish (Oryzias latipes)

Non-stressful temperature effect on oxidative balance and life history traits in adults fish (Oryzias latipes)

<i>Dactylogyrus oryziasi</i> n. sp. (Monogenea: Dactylogyridae) from <i>Oryzias latipes</i> (Beloniformes: Adrianichthyidae) in Japan

From the Cover: Embryonic Exposure to TCDD Impacts Osteogenesis of the Axial Skeleton in Japanese medaka,Oryzias latipes

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