1 Pattern and Variety in Development

Blaxter, J. H. S.

doi:10.1016/s1546-5098(08)60198-3

Cited by 266 publications

(284 citation statements)

References 108 publications

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“…Egg size and fecundity tend to be inversely proportional in different species (Blaxter, 1988). According to Blaxter, the influence of initial egg size on survival and development has important ecological implications, i.e.…”

Section: Embryonic Periodmentioning

confidence: 99%

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Morphological description of the developmental stages of Parauchenipterus galeatus (Linnaeus, 1766) (Siluriformes, Auchenipteridae) on the floodplain of the upper Paraná River

1999

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We provide morphological and morphometric descriptions of the developmental stages of Parauchenipterus galeatus, from the floodplain of the Upper Paraná River. Specimens were obtained by induced spawning. The species has large adhesive eggs with a double membrane. The incubation period is long, 65 hours at 27°C. The larvae are well developed at hatching, with relatively rapid larval development. Analysis of the morphometric data showed that the body parts of P. galeatus grow proportionately. Este trabalho teve por objetivo descrever morfológica e morfometricamente os estágios de desenvolvimento de Parauchenipterus galeatus capturados na planície de inundação do alto rio Paraná. O material utlizado foi obtido através de desova induzida. A espécie apresentou ovos grandes, adesivos e com membrana dupla. Período de incubação longo (65 horas a 27°C). As larvas são bem desenvolvidas no momento da eclosão, apresentando desenvolvimento larval relativamente rápido. A análise dos dados morfométricos revela que P. galeatus apresenta crescimento proporcional das partes do corpo.Palavras-chave: descrição morfológica, Parauchenipterus galeatus, larvas e juvenis, planície de inundação, rio Paraná.

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Section: Embryonic Periodmentioning

confidence: 99%

“…Studies under experimental conditions as well as in natural environments show that high mortality occurs when the larva passes through this phase. Mortality is influenced mainly by the quantity and quality of food, and by the size of the buccal opening in relation to the size of available prey (Blaxter, 1988).…”

Section: Flexion Stagementioning

confidence: 99%

Morphological description of the developmental stages of Parauchenipterus galeatus (Linnaeus, 1766) (Siluriformes, Auchenipteridae) on the floodplain of the upper Paraná River

1999

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“…BLAXTER (1988) suggested that mortality by predation, could predominate over starvation on some occasions, and cannibalism seemed to be an important factor for recruitment of this species. This fact could be verified in juveniles and adults of H. cf.…”

Section: Resultsmentioning

confidence: 99%

Larval development of hoplias cf. Lacerdae (Pisces: Erythrinidae) and delayed initial feeding effects

Sirol

Menin

Andrade

et al. 1998

Braz. arch. biol. technol.

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Larval development of Hoplias cf. lacerdae was studied under laboratory conditions. After hatching, ontogenetic changes were recorded on food-deprived larvae in 12-hour intervals. Mouth opening occurred after 2.5 days and notochord terminated flexure in 6.5 days. Notochord length increased at a constant rate until complete yolk absorption (13,5 days). Larval dry weight and body height diminished gradually up to 21 days after hatching, when all starved larvae died. Every 12 hours after yolk absorption, groups of larvae (n=15), were separeted, and fed with Artemia nauplii for 10 days. The pointof-no-return (when 50% of larvae were unable to feed or to assimilate ingested food after delayed feeding), was not apparent in this species.

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“…The early development of internal organs is similar in most teleosts (Blaxter, 1988), although the kidney may form either before or after hatching. The present study showed that the kidneys of the Korean rose bitterling formed at 15 DPH and developed continuously thereafter until 53 DPH.…”

Section: Discussionmentioning

confidence: 99%

“…For internal organs, such as the kidney or midgut epitheliu m, development typically p roceeds throughout the larval stage in fish (Blaxter, 1988). Nu merous studies have examined various parameters of early development in teleost species, such as: early growth and yolk absorption in the rainbow trout (Oncorhynchus mykiss) (Park, Im, & Jang, 1996) and chum salmon (O. keta) (Zhang, Sohn, Seong, & Park, 1995); the early develop ment of eye in the dotted gizzard shad (Konosirus punctatus) (Park et al, 2006a) and dark-banded rockfish (Sebastes inermis) (Park, Park, Gil, & Goo, 2012); and the morphometric and histological changes of the cyprinid loach (Misgurnus anguillicaudatus) (Han et al, 2013).…”

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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1 Pattern and Variety in Development

Cited by 266 publications

References 108 publications

Morphological description of the developmental stages of Parauchenipterus galeatus (Linnaeus, 1766) (Siluriformes, Auchenipteridae) on the floodplain of the upper Paraná River

Morphological description of the developmental stages of Parauchenipterus galeatus (Linnaeus, 1766) (Siluriformes, Auchenipteridae) on the floodplain of the upper Paraná River

Larval development of hoplias cf. Lacerdae (Pisces: Erythrinidae) and delayed initial feeding effects

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