Spatial distribution of brown sole Pseudopleuronectes herzensteini eggs and larvae in Mutsu Bay, Japan

Imura, Kazuo; Takatsu, Tetsuya; Nanjo, Nobuaki; Kimura, Osamu; Takahashi, Toyomi

doi:10.2331/suisan.70.39

Cited by 8 publications

(8 citation statements)

References 19 publications

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“…Specimens were preserved in 90% ethanol solution. In accordance with Imura et al [20] and Minami [29], the developmental stages of brown sole were defined as follows: stage A, yolk sac larvae; stage B, larvae with open mouth and remaining yolk; stage C, larvae with yolk sac fully absorbed; stage D, advanced larvae with thickened hypural bone base; stage E, caudal fin ray formation; stage F, notochord in flexion; stage G, left eye has begun moving; stage H, the left eye is visible from the right side of the head; stage I, the pupil of the left eye is on the ridge of the head; and stage J, the pupil of the left eye is beyond the head ridge (juvenile). In this paper, stage G-I larvae were defined as metamorphosing larvae.…”

Section: Methodssupporting

confidence: 91%

“…However, the North Japan Sea stock, which is distributed around the northern mainland of Japan, has considerably decreased [19], and clarification of the mechanism responsible for recruitment fluctuations is essential. To elucidate the mechanism of recruitment fluctuations, the early life history of brown sole has been investigated; spatial distribution of wild larvae [20], feeding of wild larvae [21], settlement size and location of nursery areas in the Japan Sea [22], and modeling of larval transportation [23] have been studied. In addition, rearing experiments have been conducted to improve the quality of hatcheryproduced juveniles [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Otolith microstructure of brown sole Pseudopleuronectes herzensteini: validation of daily ring formation and the occurrence of microstructure denoting metamorphosis

et al. 2011

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Brown sole Pseudopleuronectes herzensteini larvae and juveniles were reared to validate daily otolith ring formation. At 15°C, a check (a distinct ring) formed on the sagittae and lapilli at 6 days after hatching, and clear increments regularly formed outside the check. For both otoliths, the relationship between the number of days after hatching and number of increments was linear, and the slope of the line was approximately 1; therefore, daily formation was validated. At 12°C, the check formed on the lapillus 8 days after hatching. Accessory primordia (AP) began forming on the sagittae of metamorphosing larvae, and the shape of the sagittae became complicated. AP were not formed on the lapillus; concentric rings were formed throughout larval and juvenile stages. Wide and obscure increments formed on the lapilli during metamorphosis (metamorphosing zone, MZ). Based on MZ, concentric rings that have formed on the lapilli of juveniles can be separated into larval and juvenile rings. The morphs of large juveniles' lapilli were bilaterally asymmetric, and the blind-side lapilli were most suitable for otolith microstructure analysis. This study provides fundamental information for otolith microstructure analysis in wild brown sole.

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Section: Methodssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Otolith microstructure of brown sole Pseudopleuronectes herzensteini: validation of daily ring formation and the occurrence of microstructure denoting metamorphosis

et al. 2011

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“…Therefore, all the tools have already been prepared for surrogate production in flatfishes. Moreover, the spatial distribution of fertilized egg and larvae has been examined to elucidate the early life history (Nakagami et al, 2001;Hasegawa et al, 2003;Imura et al, 2004). If the PGCs are sorted by cell sorting apparatus from the eggs and larvae collected from the natural population, we can use natural gene recourses for artificial breeding in flatfish.…”

Section: Application Of Surrogate Propagation To Flatfish Aquaculturementioning

confidence: 99%

Developmental biotechnology for aquaculture, with special reference to surrogate production in teleost fishes

Yamaha

Saito

Goto-Kazeto

et al. 2007

Journal of Sea Research

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The purpose of this review is to introduce surrogate production as a new technique for fish-seed production in aquaculture. Surrogate production in fish is a technique used to obtain the gametes of a certain genotype through the gonad of another genotype. It is achieved by inducing germ-line chimerism between different species during early development. Primordial germ cells (PGCs) are a key material of this technique to induce germ-line chimera. In several species, it has been reported that PGCs differentiated from the blastomeres inherited some maternally supplied mRNA located at the terminal regions of the early cleavage furrows. PGCs from donor species (or strains) are isolated and transplanted into host species to induce the germ-line chimera.Four methods for inducing germ-line chimera, namely, blastomere transplantation, blastoderm-graft transplantation, transplantation of PGC from the genital ridge and transplantation visualized PGC with GFP fluorescence, are described. Several problems preventing the successful induction of germ-line chimera in various fish species are mentioned. Surrogate production, however, has the possibility to allow efficient fish-seed production and effective breeding and transfer of biodiversity to an aquaculture strain.Conservation and efficient utilization of genetic resources will be achieved through surrogate production combined with the cryopreservation of PGCs.

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“…Generally, the vertical distribution of larval flatfishes shifts from the surface layer to a deeper layer with development (Kendall & Naplin, 1981; Yamashita et al , 1996; Lagardère et al , 1999; Imura et al , 2004). The dominant distribution layer for B‐stage larvae is at 0 to 5 m and that for D‐stage larvae is at 10 to 20 m in depth (M. Oshima, unpubl.…”

Section: Discussionmentioning

confidence: 99%

Effect of turbulence on feeding intensity and survival of Japanese flounder Paralichthys olivaceus pelagic larvae

Oshima

Kato

Masuda

et al. 2009

Journal of Fish Biology

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Three-day rearing experiments were conducted to study the effect of turbulence on the feeding intensity and survival of pelagic larvae of Japanese flounder Paralichthys olivaceus. Four levels of turbulence as control (10(-7.2) m2 s(-3)), low (10(-6.2) m2 s(-3)), mid (10(-5.6) m2 s(-3)) and high (10(-5.0) m2 s(-3)) were set by changing the flow rate of water pumped through pipes set on the bottom of the tanks. In B-stage larvae, defined as having buds of elongated dorsal fin rays, the feeding intensity and growth were higher in the low and mid turbulence levels, while survival was highest in the control level. Most of the larvae surviving in the control level, however, were judged to be in a seriously starved condition leading to subsequent high mortality. Because the three-day span of the rearing experiments was thought to be a little shorter than the periods before starvation-induced, high mortality occurs. In contrast, for D-stage larvae, their feeding and growth were optimal in the control and low levels. Feeding was more adversely affected in the high level for D-stage larvae compared with B-stage larvae. This is probably due to the compressed body shape and elongated dorsal fin rays of D-stage larvae, which may be more strongly affected by turbulence and, as a consequence, the larval feeding behaviour such as pursuit and capture of prey organisms becomes less efficient than in lower turbulence. Considering the vertical distribution of B and D-stage larvae in the oceanic water column, the optimum turbulence level range found in the present study corresponded to a wind speed of 7-10 m s(-1). Therefore, moderate weather conditions of this wind speed range are considered to potentially enhance survival of early larval stages of P. olivaceus.

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Spatial distribution of brown sole Pseudopleuronectes herzensteini eggs and larvae in Mutsu Bay, Japan

Cited by 8 publications

References 19 publications

Otolith microstructure of brown sole Pseudopleuronectes herzensteini: validation of daily ring formation and the occurrence of microstructure denoting metamorphosis

Otolith microstructure of brown sole Pseudopleuronectes herzensteini: validation of daily ring formation and the occurrence of microstructure denoting metamorphosis

Developmental biotechnology for aquaculture, with special reference to surrogate production in teleost fishes

Effect of turbulence on feeding intensity and survival of Japanese flounder Paralichthys olivaceus pelagic larvae

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