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研究生:張詣奇
研究生(外文):Chang, ill chi
論文名稱:兩棲性行為對跳彈塗離子調節的影響
論文名稱(外文):The effect of amphibious behavior on ion regulation in Periophthalmus cantonesis
指導教授:林惠真林惠真引用關係
指導教授(外文):Lin Hui-Chen
學位類別:碩士
校院名稱:東海大學
系所名稱:生物學系
學門:生命科學學門
學類:生物學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:4
中文關鍵詞:彈塗魚跳彈塗離子調節兩棲性行為
外文關鍵詞:mudskipperion regulationPeriophthalmus cantonesisamphibiousbehavior
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跳彈塗為分佈於紅樹林沼澤地或河口平坦泥地的廣鹽性魚類,具有明顯的
離水活動能力.已知上述環境的鹽度會因潮汐漲退產生明顯的變化,所以本
實驗的假說是跳彈塗利用離水活動能力以因應水中鹽度遽變時,防止體內
離子持續的流出與流入.將馴養的跳彈塗(35 g/l 人工海水,自由出入水
面) 分別給予自由出入與完全水面下兩種活動模式,分別進行長期鹽度馴
養 (0, 35, 60 g/l 人工海水), 極端鹽度轉移 (0 g/l -> 60 g/l人工海
水), 模擬環境鹽度轉移 (35 g/l -> 0 g/l, 6hr -> 35 g/l, 6hr) 等實
驗.行為觀察方面則是針對極端鹽度轉移與模擬環境鹽度轉移的自由出入
處理組進行觀察以及鹽度選擇行為的觀察.結果顯示,長期鹽度馴養實驗
中,其血漿鈉離子在兩種活動模式間或3種鹽度處理間並無差異;但在肌肉
鈉離子濃度變化上3種鹽度處理間有顯著差異存在,2種活動模式間無顯著
差異存在.在極端鹽度轉移實驗中,不論血漿或肌肉鈉離子濃度變化比較上
皆是自由出入處理組小於完全水面下處理組(92 - 116 % 與 95 - 191
%)在行為觀察中發現在此鹽度轉移處理中,跳彈塗呈現出爬離水面的行為.
同時在採樣過程中發現:完全水面下者自轉移後2小時便有瀕死現象產生.
而在模擬環境鹽度變化的連續鹽度轉移處理實驗中,2次連續轉移後,自由
出入組仍舊可維持其血漿鈉離子濃度的穩定(95 -108 %);完全水面下處理
組在前6小時其血漿鈉離子濃度則有下降的趨勢(74 -101 %),隨後的6小時
才又逐漸的回復(74 -93 %).但在肌肉鈉離子濃度變化上,2種活動模式間
並無任何的差異存在.此外兩次連續鹽度轉移並未對出入水面,脫離水面總
時間與脫離水面平均時間的表現上造成影響.在鹽度選擇行為實驗中則發
現,跳彈塗偏向選擇 35 g/l 的人工海水.在鰓絲的觀察中則發現跳彈塗的
鰓絲與鰓薄板間分別有分支,癒合的現象;此外在跳彈塗的鰓絲與鰓薄板上
散佈許多具有離子調節功能的 MR 細胞.

The euryhaline and highly terrestrial fish, mudskipper
(Periophthalmus cantonesis), lives in complex variable mangrove
swamps or estuary mudflat habitata. Withinthesis habitats an
array of environmental factors such as salinity fluctuations
that occur both spatially and seasonal has various efects on the
physiological adaptation of this species. The ion change in the
environment is dramatic.Moreover P. cantonesis was completely
out of contact with tide pool from the field observations. In
order to understand the relationship between ambient ion
variations and amphibious behavior of P. cantonesis, the effect
of amphibiousbehavior on ion regulation in P. cantonesis was
investigated in this study. P. cantonesis was first acclimated
in 35 g/l SW and freemode and was subjected to two exercise
modes (free mode and aquatic mode). Sodium ion concentrationand
behavior performance of these fish were recorded. A series of
three experiments was conducted in this study. In the long term
salinity acclimation experiment(FW, 35 g/l SW, 60 g/l SW), there
was no difference in plasma sodium ion concentration between
exercise modes and among salinity treatments, and no difference
in muscle sodium ion concentration between exercise modes was
found. However, there was a difference in muscle sodium ion
concentration among salinitytreatments. In the extreme salinity
transfer experiment (FW -> 60 g/l SW), theextent of variations
in plasma and muscle sodium ion concentrations in free modegroup
was less than those in aquatic mode group (92 -116 % and 95 -191
% respectively). In free mode group, most P. cantonesis stayed
in air, while some fish died in aquatic mode 2 hours after
salinity transfer. In salinity simulationexperiment (35 g/l -> 0
g/l, 6 hr ->35 g/l, 6 hr), free mode group maintaineda constant
plasma sodium ion cincentration (95 -108 %),wheres aquatic mode
grouphad it changed with ambient salinity. Within the first 6
hrs, plasma sodium ionconcentration from the aquatic mode
individuals dropped (74 -101 %), and then returned to their
original levels (74 - 93 %) in the following 6 - 12 hrs. The
behavior performance parameters (time of out of water, times out
of water) did notchange after two salinity transfers. Salinity
preference experiment was conducted.Regardless of the acclimated
salinity, the mudskipper, in general, had a preferencefor 35 g/l
SW among the three salinities provided (FW, 35 g/l SW, 60 g/l
SW).In summary, amphibious behavior prevents the body ion
concentration of P. cantonesisfrom changing with its ambient
salinity in natural habitat. Finally, there werea lot of MR
cells in both filaments and lamella in the gill of P.
cantonesis.And the possible evolutionarysignificance of this
observation was discussed.

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