Offshore collection of larval Japanese flounder Paralichthys olivaceus: implication for transport-induced mortality

Tomiyama, Takeshi; Mizuno, Takuji; Uenoyama, Daisuke; Enomoto, Masahiro; Sohtome, Tadahiro

doi:10.1111/j.1444-2906.2008.01543.x

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Japanese flounder Paralichthys olivaceus (Temminck and Schlegel, 1864) is an euryhaline teleost that inhabits the coastal waters and estuaries of Japan, Korea and China, and is capable of adapting to substantial changes in environmental salinity (Shigenobu et al, 2013;Wada et al, 2012;Wang et al, 2015). This common flatflish usually inhabits coastal waters at depths <100 m and spawn pelagic eggs at depths <50 m (Tomiyama et al, 2008). Larvae spend approximately about a month in the pelagic phase, before metamorphosing and migrating into nearshore waters using tidal currents (Minami, 1982;Noichi, 1997;Tanaka et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Effect of simulated sudden thunderstorm flood on the early stage development of Japanese flounder Paralichthys olivaceus

et al. 2021

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The early stage development response of Japanese flounder to simultaneous gradual drop in salinity (34, 24, 14 psu) and temperature with different durations (1, 3, 6 h) were investigated to gain better understanding of the decrease in natural stock and its relationship to global weather pattern changes. A series of small-scale laboratory set-up containing six replicates per treatment using plastic microplates were each stocked with 78 fertilized Japanese flounder eggs in gastrula stage and exposed to gradual salinity and temperature drop conditions followed by the recovery to ambient conditions. Two-way ANOVA showed that salinity (S) and exposure time (E) individually or as a combination (S × E) had no effects on hatching success rate, percentage of abnormality, pre-anal length, final total length at 4 days post-hatch (dph) and survival rate at 4 dph. Onset hatching time, newly hatched larvae total length and yolk sac volume showed individual effects but recorded no interaction effects between S and E.Results obtained indicated that the early developmental stages of Japanese flounder were quite resilient to the stressful conditions subjected on them.

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Section: Introductionmentioning

confidence: 99%

Effect of simulated sudden thunderstorm flood on the early stage development of Japanese flounder Paralichthys olivaceus

et al. 2021

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“…The olive flounder (Paralichthys olivaceus) is a marine demersal species found along the coasts of Japan, Korea, and China (Sabate et al, 2008;Tomiyama et al, 2008). This flounder migrates from deep (cold) seas to shallow (warm) areas for reproduction, so thermoregulation is an important way to keep their internal environment steady.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Responses of the Caudal Neurosecretory System (CNSS) Under Thermal Stress in Olive Flounder (Paralichthys olivaceus)

Yuan

Long

et al. 2020

Front. Physiol.

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Temperature is a critical environmental factor that affect most biological and physiological processes in fish. The caudal neurosecretory system (CNSS) is unique to fish and is proved to maintain homeostasis during seasonal alterations. However, the dynamic expression and secretion pattern of its major hormones, corticotrophinreleasing hormone (CRH), urotensin I (UI), and urotensin II (UII), and their response to thermal stress has not been studied. CRH, UII and cortisol in plasma, gene expression levels of CRH, UI, and UII in the CNSS of olive flounder (Paralichthys olivaceus) were therefore characterized. UI-and UII-positive Dahlgren cells, as well as cell proliferation in the CNSS, were also quantified. The results showed that plasma cortisol and CRH were increased in both low temperature (LT) and high temperature (HT) groups. However, there was no difference in plasma UI and UII during thermal stress. In CNSS, CRH, UI, and UII mRNA levels were all significantly elevated in response to acute hypothermal stress and recovered back to the control (normal) level after 8 days of adaptation. During hyperthermal challenge, gene expression of CRH and UI only significantly increased after 8-days of transfer but no change in UII was observed. We also demonstrated an increasing percent of UI-positive Dahlgren cells in the CNSS of 8-days hyperthermal stressed fish. However, no BrdU-labeled Dahlgren cells were found among the three treatment groups. Collectively, our results demonstrate that the CNSS is subjected to dynamic responses under thermal stress and expands upon the role of the CNSS in thermoregulation. The dynamic responses of hormone levels and the gene expression of CRH, UI and UII in CNSS are all involved in the process of hyper-or hypo-thermal stress and adaptation.

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“…Recent work on the larvae of the Pleuronectiformes has dealt mainly with P. olivaceus and has been undertaken in China and Japan (TANAKA et al, 2005;SAKAKURA, 2006;ISHIBASHI et al, 2007;SEIKAI, 2008aSEIKAI, , 2008bTOMIYAMA et al, 2008). In Brazil studies have focused more on transport (ARAÚJO-LIMA; OLIVEIRA, 1998), reproductive aspects (SAMPAIO et al, 2007) and aquiculture (LANES et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Distribution and abundance of Pleuronectiformes larvae off Southeastern Brazil

et al. 2014

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The objective of this study was the description of the composition, abundance and density in horizontal and vertical distribution of Pleuronectiformes larvae on the southeastern Brazilian continental shelf. The samples were collected with bongo nets and a Multi Plankton Sampler (MPS), both in summer and winter 2002. A total of 352 flatfishes larvae were collected in summer and 343 in winter, representing three families and a total of

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Offshore collection of larval Japanese flounder Paralichthys olivaceus: implication for transport-induced mortality

Cited by 5 publications

References 4 publications

Effect of simulated sudden thunderstorm flood on the early stage development of Japanese flounder Paralichthys olivaceus

Effect of simulated sudden thunderstorm flood on the early stage development of Japanese flounder Paralichthys olivaceus

Dynamic Responses of the Caudal Neurosecretory System (CNSS) Under Thermal Stress in Olive Flounder (Paralichthys olivaceus)

Distribution and abundance of Pleuronectiformes larvae off Southeastern Brazil

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