Morphogenesis of the Eye of Brown Croaker (Miichthys miiuy)

Park, In-Seok; Seol, Dong-Won; Cho, Sung Hwoan; Song, Young-Chae; Choi, Hee Jung; Noh, Choong Hwan; Myoung, Jung-Goo; Kim, Jong-Man

doi:10.4217/opr.2006.28.3.287

Cited by 5 publications

(10 citation statements)

References 4 publications

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“…However, high mortality and poor growth have been frequently observed during artificial larval rearing, which is hindering the mass production of this fish. To date, information on the biology and artificial breeding of miiuy croaker is very limited, and only a few studies have dealt with its early development, survival, and growth (Zhong et al 2005;Park et al 2006;Shan et al 2008a, b). In previous studies, we found that starvation frequently occurred in laboratory-reared larvae, which was a critical factor leading to malnutrition and poor larval growth and survival (Shan and Dou 2008;Shan et al 2008a).…”

Section: Introductionmentioning

confidence: 98%

Ontogenetic development of digestive enzymes and effect of starvation in miiuy croaker Miichthys miiuy larvae

Shan

Huang

Cao

et al. 2008

Fish Physiol Biochem

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The ontogenetic development of the digestive enzymes amylase, lipase, trypsin, and alkaline phosphatase and the effect of starvation in miiuy croaker Miichthys miiuy larvae were studied. The activities of these enzymes were detected prior to exogenous feeding, but their developmental patterns differed remarkably. Trypsin activity continuously increased from 2 days after hatching (dah), peaked on 20 dah, and decreased to 25 dah at weaning. Alkaline phosphatase activity oscillated at low levels within a small range after the first feeding on 3 dah. In contrast, amylase and lipase activities followed the general developmental pattern that has been characterized in fish larvae, with a succession of increases or decreases. Amylase, lipase, and trypsin activities generally started to increase or decrease at transitions from endogenous to exogenous feeding or diet changes, suggesting that these enzymatic activities can be modulated by feeding modes. The activities of all the enzymes remained stable from 25 dah onwards, coinciding with the formation of gastric glands and pyloric caecum. These results imply that specific activities of these enzymes underwent changes due to morphological and physiological modifications or diet shift during larval development but that they became stable after the development of the digestive organs and associated glands was fully completed and the organs/glands functioned. Trypsin and alkaline phosphatase were more sensitive to starvation than amylase and lipase because delayed feeding up to 2 days after mouth opening was able to adversely affect their activities. Enzyme activities did not significantly differ among feeding groups during endogenous feeding; however, all activities were remarkably reduced when delayed feeding was within 3 days after mouth opening. Initiation of larvae feeding should occur within 2 days after mouth opening so that good growth and survival can be obtained in the culture.

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Section: Introductionmentioning

confidence: 98%

Ontogenetic development of digestive enzymes and effect of starvation in miiuy croaker Miichthys miiuy larvae

Shan

Huang

Cao

et al. 2008

Fish Physiol Biochem

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“…The cyprinid loach, Misgurnus anguillicaudatus , is a freshwater fish species of the loach family Cobitidae ( Nelson, 2006 ). The species is native to East Asia, but is also popular as an aquarium fish and has been introduced elsewhere in Asia and to Europe and North America ( Park et al, 2006c ). The cyprinid loach inhabits mud, ponds, and rice fields, which are subject to periodic drying ( Park & Kim, 2000 ), and this can result in starvation.…”

Section: Introductionmentioning

confidence: 99%

“…The cyprinid loach inhabits mud, ponds, and rice fields, which are subject to periodic drying ( Park & Kim, 2000 ), and this can result in starvation. The domestic market for this species has expanded rapidly in recent years, and consequently, the cyprinid loach is now a commercially important freshwater species in Korea ( Park et al, 2006c ). Therefore, it is cultivated in Korea with high marketability.…”

Section: Introductionmentioning

confidence: 99%

Morphometric and Histological Changes in Cyprinid Loach, Misgurnus anguillicaudatus, in the Early Growth Period

Han¹,

Lim²,

Kang³

et al. 2013

Development &Amp; Reproduciton

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In this study, we measured the morphometric and histological changes in the cyprinid loach, Misgurnus anguillicaudatus, during the early period of growth. Eyes, yolk length, yolk height, and yolk volume of the larva decreased for 16 days post hatching (DPH) (P<0.05). During 60 DPH (P>0.05), the most anterior extension of the head × the posterior end of the supraoccipital, the most anterior extension of the head × the origin of the dorsal fin, the most anterior extension of the head × the origin of the pectoral fin, the posterior end of the supraoccipital × the origin of the pelvic fin, and the origin of the dorsal fin × the ventral origin of the caudal fin gradually decreased, whereas the most anterior extension of the head × the dorsal origin of the caudal fin, the origin of the dorsal fin × the origin of the anal fin, the origin of the dorsal fin × the origin of the pectoral fin, and the insertion of the dorsal fin × the origin of the pelvic fin gradually increased (P<0.05). In the cyprinid loach, the retina is composed of six layers: the epithelial layer, ganglion cell layer, inner nuclear layer, inner plexiform layer, outer limiting membrane, and rod and cone layer (RCL). After hatching, part of the RCL gradually increased in density. The kidney and midgut epithelium were already formed in the cyprinid loach just after hatching and grew gradually in subsequent days.

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“…The ret inal thickness was measured using an eyepiece micro meter under optical microscopy (x1,000; Carl Zeiss, Germany) and the proportional thicknesses of retinas was calculated using the method of Park et al (2006b). To mon itor the development of the midgut epitheliu m, kidney, and g ill, an optical microscope camera (A xio Cam M R, Carl Zeiss, Germany) was used to measure the areas and volumes of cells and nuclei using the formulae, surface area=1/4ab and volume=4/ 3(a/2)(b/2) 2 , where a and b are the major and minor axes of the cell or nucleus (Park & Kim, 2000).…”

Section: Methodsmentioning

confidence: 99%

“…In fish larvae, visual function is important for feeding, collective behavior, positioning, and escape fro m predators (Rodriguez & Gisbert, 2001;Park, Im, Hur, & Jeong, 2006a;Park et al, 2006b). The ret inal structure of the teleost does not differ fro m that of other vertebrates, but the number of teleost species and their differences in habitats, activities, and life cycles has made it difficult fo r researchers to define a general ret inal structure for the Teleostei (Wagner, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Goo¹,

Hwang²,

Kim³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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Histological changes in the Korean rose bitterling ( Rhodeus uyekii) organs during the early period of growth were observed in this study . Regarding the retina, this organ was first seen at 5 days post -hatching (DPH) and increased in size up to 53 DPH. The retina consisted of the optic nerve fiber layer (ONFL), ganglion cell layer (GCL), inner plexiform layer (IPL), inner nuclear layer (INL), outer plexiform layer (OPL), outer nuclear layer (ONL), outer limiting membrane (OLM ), rod and cone layer (RCL), and epithelial layer (EL). The EL, RCL, OLM , and IPL increased in thickness, whereas the INL remained unchanged and the GCL thinned to 53 DPH. Regarding the kidney, this organ harbors many proximal tubules that appear as hollow ovals or circles upon histological examination of sections. A few small proximal tubules were observed at 5 DPH, and the number and size of proximal tubules increased steadily thereafter. The proximal tubule cells of kidney increased with time, with the minor axes remaining consistently shorter than the major axes throughout this period. With respect to the midgut epithelium, this organ was tightly stretched at 15 DPH, but it became wrinkled and folded by 53 DPH. The tissue density increased with time, and the nuclear height increased continuously from 15 DPH to 53 DPH. With respect to the gill, this organ developed gradually over time, with increases observed in the number and length of gill filaments and the number of gill lamella. These results may provide useful data for the successful breeding and rearing of the Korean rose bitterling.

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Morphogenesis of the Eye of Brown Croaker (Miichthys miiuy)

Cited by 5 publications

References 4 publications

Ontogenetic development of digestive enzymes and effect of starvation in miiuy croaker Miichthys miiuy larvae

Ontogenetic development of digestive enzymes and effect of starvation in miiuy croaker Miichthys miiuy larvae

Morphometric and Histological Changes in Cyprinid Loach, Misgurnus anguillicaudatus, in the Early Growth Period

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