動物原文期刊翻譯<急>part3
Most researches have been conducted on
temperate zone tadpoles; there has been little
research on subtropical and tropical species. We
investigated algae consumed by Rana sauteri
(Ranidae) and Bufo bankorensis (Bufonidae)
tadpoles in a subtropical stream in Taiwan.
Specifically, we hypothesized that tadpoles of
both species are non-selective algal feeders and
predicted that the compositions of algae found in
the alimentary canals of these 2 species would be
similar to those found on tiles placed in streams
where the tadpoles were collected.
MATERIALS AND METHODS
Field methods
We conducted our studies from Oct. 2001 to
Dec. 2002 at the Lienhuachih Biological Station
(23°55'N, 120°52'E) of the Taiwan Forestry
Research Institute Experimental Forest, Nantou
County, central Taiwan. The station encompasses
a 461-ha watershed. The area where we worked
was covered by undisturbed lowland primary forest,
characterized by low topography with elevations
ranging 576-975 m. The mean annual air
temperature was 21.1°C, and ranged from 9.9°C
in Jan. to 30.0°C in July. The area receives
approximately 2200 mm of rain annually. Although
it rains in all months, the wet season is from May
through Oct.
We collected 3 R. sauteri and B. bankorensis
tadpoles each, if possible, from each of the 6
sites distributed in the upstream (sites 5 and 6),
midstream (site 3), and downstream (sites 1,
2, and 4) portions of 2 main tributaries (Fig. 1).
These sites were never dry, but sites 5 and 6 had
little water during the dry season. The stream bank
and bottom consisted of sand, gravel, boulders,
and bedrock. Tadpole species identification was
mainly based on the external morphology, body
coloration, and mouth part morphology (Chou
and Lin 1997). Dominant vegetation along the
stream was Ageratum houstonianum, Alocasia
macrorrhiza, Bambusa stenostachya, Bidens
pilosa, Crassocephalum rabens, Dendrocalamus
latiflorus, Hedychium coronarium, Impatiens
balsam, Mallotus japonicus, Miscanthus floridulus,
Solanum nigrum, and Sphaeropteris lepifera.
3 個解答
- EMEDLv 71 0 年前最佳解答
最多研究引導在溫帶地區的蝌蚪(就是多數都在研究溫帶地區的蝌蚪);少數研究在亞熱帶及熱帶品種.我們觀察到在亞熱帶的台灣,梭德氏赤蛙(赤蛙科)和盤古蟾蜍(蟾科)吃海藻.
我們具體地假設這二種品種的蝌蚪是非選擇性的海藻餵食者,且預計在這二種品種的消化道中,海藻的成分將和蝌蚪在河中瓦礫上的海藻成分相似.
MATERIALS AND METHODS 材料及方法
Field methods 田地方法
我們的研究從2001年10月至2002年12月,在中台灣南投縣台灣農委會蓮華池生物站(2355'N, 12052'E).
此站包圍著一個 461-ha分水嶺.我們在此的研究包含未被碰過的森林低地,它的特點是低海拔,在576-975 公尺間.
全年的氣溫在21.1度,1月份從9.9度至7月的30度.這地區大約有2200mm的年雨量.
雖然整月在下雨,潮溼季節從5月至10月.我們收集各3隻梭德氏赤蛙和盤古蟾蜍,如有可能,從分布在上游(sites 5 and 6),中游(site 3)及下游(sites 1, 2, and 4)的支流部份的6個場所.
這些地方從未乾燥,但5跟6號地方在乾旱期間有少許的水.小河堤及底部含沙,碎石,大圓石及床岩.蝌蚪品種主要基於特有生物型態,身體顏色和口部生物型態來介定.
小河的優勢植群為紫花藿香薊, 姑婆芋, 刺竹, 大花咸豐草, 昭和草, 麻竹, 野薑花鳳仙花, 野桐, 芒草, 龍葵和筆筒樹
