http://scholars.ntou.edu.tw/handle/123456789/14511
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Su-lean Chang | en_US |
dc.contributor.author | Guang-hsiung Kou | en_US |
dc.contributor.author | I-Chiu Liao | en_US |
dc.date.accessioned | 2020-12-11T06:16:23Z | - |
dc.date.available | 2020-12-11T06:16:23Z | - |
dc.date.issued | 2004 | - |
dc.identifier.uri | http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45069 | - |
dc.identifier.uri | http://scholars.ntou.edu.tw/handle/123456789/14511 | - |
dc.description.abstract | (Anguilla japonica) in its early stages. Zoological Studies 43(3): 571-579. The biology and ecology of Japanese eel (Anguilla japonica) in the early developmental stages are still not clear. This study was conduct-ed to determine the optimum water temperature for incubation of embryos and yolk-sac larvae of this eel. Results show that both embryos and yolk-sac larvae are able to adapt to wide ranges of water temperatures. The embryos at the morula, gastrula, and C-shaped stages initially incubated at 23°C were able to adapt totemperatures of 18~28°C. However, the hatching rate was significantly lower when morula and gastrulastages were transferred to 18°C. The survival rate at the eye-pigmented stage was highest at 26°C for all 3embryonic stages. Moreover, C-shaped embryos were able to tolerate a higher temperature (30°C) if acclimat-ed to 26°C prior to the trial. One-day-old yolk-sac larvae, on the other hand, were able to adapt to tempera-tures of 3~32°C. The highest survival rates at the eye-pigmented stage were observed at 26~30°C. From theabove results and considering other technicalities of spawning and incubation, it is suggested that water tem-peratures be regulated in the range of 24~26°C for incubation of Japanese eel embryos, and 26~28°C forincubation of yolk-sac larvae. Based on temperature adaptation and good buoyancy of eel embryos, we specu-lated that eel eggs may float up to the warm water layer of the sea (> 24°C) which is above the putative spawn-ing water layer (100 m in depth). On the other hand, hatched yolk-sac larvae may sink to the colder water layer and dim environment based on their tolerance of low temperatures, subsidence attributes, and negative photo- | en_US |
dc.language.iso | en | en_US |
dc.publisher | Zoological Studies | en_US |
dc.subject | anguilla japonica | en_US |
dc.subject | yolk-sac larva | en_US |
dc.subject | japanese eel | en_US |
dc.subject | early stage | en_US |
dc.subject | temperature adaptation | en_US |
dc.subject | survival rate | en_US |
dc.subject | eye-pigmented stage | en_US |
dc.subject | theabove result | en_US |
dc.subject | wide range | en_US |
dc.subject | zoological study | en_US |
dc.subject | subsidence attribute | en_US |
dc.subject | good buoyancy | en_US |
dc.subject | japanese eel embryo | en_US |
dc.subject | result show | en_US |
dc.subject | c-shaped embryo | en_US |
dc.subject | colder water layer | en_US |
dc.subject | one-day-old yolk-sac larva | en_US |
dc.subject | dim environment | en_US |
dc.subject | optimum water temperature | en_US |
dc.subject | eel embryo | en_US |
dc.subject | water temperature | en_US |
dc.subject | negative photo | en_US |
dc.subject | water tem-peratures | en_US |
dc.subject | c-shaped stage | en_US |
dc.subject | low temperature | en_US |
dc.subject | putative spawn-ing water layer | en_US |
dc.subject | eel egg | en_US |
dc.subject | warm water layer | en_US |
dc.subject | early developmental stage | en_US |
dc.title | Temperature Adaptation of the Japanese Eel (Anguilla japonica) in its Early Stages | en_US |
dc.type | journal article | en_US |
dc.relation.journalvolume | 43 | en_US |
dc.relation.journalissue | 3 | en_US |
dc.relation.pages | pp.571-579 | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Center of Excellence for the Oceans | - |
crisitem.author.dept | National Taiwan Ocean University,NTOU | - |
crisitem.author.parentorg | National Taiwan Ocean University,NTOU | - |
顯示於: | 海洋中心 |
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