魚類種群 的英文怎麼說
中文拼音 [yúlèizhǒngqún]
魚類種群
英文
fish population-
The complete nucleotide sequence of the mitochondrial genome of f. limnocharis was detailedly compared with those of 5 other amphibians. the nucleotide sequences of 22 trna encoded by 6 amphibians mitochondrial genomes were combined and aligned to the homologous sequences of the 11 veterbrate taxa. using teleosts as outgroup, the phylogenetic analyses results show that mp, nj and ml trees all strongly support the monophyly of living amphibians with respect to other living tetrapods and favor a sister group relationship for caecilians and salamanders
我們在測定了澤蛙線粒體全基因組序列的基礎上，與已知其它的5種兩棲類進行詳細的比較分析，同時選擇了11種高等脊椎動物的線粒體全基因序列，以硬骨魚類做外群，用22個trna基因合併數據進行系統發生重建分析，結果表明mp 、 nj和ml樹都強力地支持現生兩棲類動物為單系群並且蠑螈類和蚓螈類為姐妹群關系（自引導值分別為92 、 99 、 100 ） 。Fish population behavior and their relation to the environment variations
魚類種群行為及其與環境變化的關系Cytochrome b gene compared with characiforms, cypriniforms and salmoniforms ; ( 2 ) the molecular phylogenetic trees suggest that siluriforms form a monophyletic group and have a close relationship with characiforms ; ( 3 ) the families of pangasiidae, claroteidae, ictaluridae, cranoglanididae, schilbidae and clariidae form a monophyletic group in the three molecular phylogenetic trees. the family bagridae branched with schilbidae which comes from china ; the family akysidae branched with amblycipitidae, but the phylogenetic positions of the families siluridae, sisoridae and pimelodidae are not recognised
魚芒科、棘脂?科、叉尾?科、長臀?科、刀鯰科與鬍子鯰科在三種方法構建的分子系統樹中均結合在一起，形成一大單系群； ?科均與來自中國的刀鯰科魚類聚在一起；粒鯰科與鈍頭跪科也均聚在一起；但鯰科、 ?科和油鯰科的系統發育位置不定。The results show that ( 1 ) loops are in general more variable than stems, and in loops a strong adenine bias are observed : ( 2 ) there does not exist a saturation effect in stems, loops or all positions of the 16s rrna gene fragments : ( 3 ) in the molecular cladogram, bagarius forms a sister group with glyptothorax, and euchiloganis forms a sister group with pareuchiloglanis, and exostoma forms a sister group with glyptosternum : ( 4 ) the phlogenetic positions of pseudecheneis, exostoma and glyptosternum are not recognized ; the glyptosternoid fishes are not monophyly although they are defined by 13 osteological apomorphies ; the incongruence of cladograms between molecular and morphological sets may be caused by less informative sites of the 550 homologous sites ; ( 5 ) e. davidi and e. kishinouyei could be the same species according to the genetic distances ; p. sinensis and p. anteanalis could be too
結果表明： （ 1 ）環區平均變異位點較莖區多，有很強的a偏好性； （ 2 ）沒有替代飽和現象； （ 3 ）分子系統樹上?屬和紋胸?屬構成姐妹群，石爬?屬和?屬構成姐妹群， ?屬和原?屬構成姐妹群； （ 4 ） ?屬、原?屬和褶?屬的系統發育位置不定， ? ?魚類並未形成一個單系類群；可能的原因是所得到的16srrna基因片段信息位點太少； （ 5 ）青石爬?和黃石爬?可能是同一物種，中華?和前臀?可能是同一物種。Daming mountain natural reserve is typical evergreen broadleaf monsoon forest area located on the tropic of cance in china. there are rich natural resources in this area, such as 1 836 plants, 49 wild mammals, over 65 birds, 11 fresh water fish and a lot of insects. some suggestions about the protection of biodiversity and sustained exploitation of resources were proposed
大明山自然保護區是我國在北回歸線上保存下來的南熱帶季風常綠闊葉林區，通過對大明山自然保護區調查研究發現有高等植物1836種，野生哺乳動物有49種，鳥類超過65種，兩棲爬行類有13種，淡水魚類有11種，以及種類繁多的昆蟲.分析了植物資源及群落的多樣性，哺乳動物、鳥類、兩棲爬行類、魚類的分佈及現存狀況Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in
同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。If more deer are killed in the summer than can be then consumed, part of the flesh is dried, but later in the season it is merely laid up in some cool cleft in the rock, where wild animals cannot reach it
如果夏天打到的鹿肉食用不完，他們就把其中的一部分曬干，並在夏天的晚些時候，找一個野獸夠不著的陰涼石縫把它們儲藏起來，秋天的生活也是一樣，成群成群移棲過來的野鵝和其它鳥類都是愛斯基摩人獵取的食物對象，此外，還有鮭魚和其它各種各樣的魚類。" in heavily fished areas like hong kong you would expect to see some recovery of the fish populations around five years after fishing is banned, and it is highly likely that the two core areas which are just a few hundred metres in length are far too small to benefit larger fishes like parrotfishes which may roam over considerable areas, " dr. cornish said
鄺力存博士指出：在香港等捕魚活動頻繁的地區，通常在禁止捕魚約五年後，魚類種群的數目理應有所回升。雖然現時設有兩個禁捕核心區，但縱長只有數百米，體形較大且活動范圍較廣的魚類如鸚鵡魚等未必能受惠。The resource amount of megalobrama skolkovii dybowsky in wusuli river is about 0. 005 % ~ 0. 01 % of whole spawning amount in heilongjiang
黑龍江魴烏蘇里江種群的資源量大約為魚類產卵群體的萬分之零點五至萬分之一。Multivariate morphometrics was conducted on the endemic asian genus sinibrama wu, 1939 in east asia in order to investigate the morphological variations among the 4 nominal species and subspecies known from south china. principal component analysis ( pca ) was performed respectively for seven meristic and thirty - two morphometric characters that were based on 224 specimens
運用多變量形態度量學方法，研究東亞特有魚類類群?華鯿屬魚類的形態差異，對其在分類學上存在疑問的物種的不同地理居群的18個框架測量距離、 14個常規測量距離和7個可數性狀進行了主成分分析。C. erythropterus, s. nigripinnis, a. rivularis, p. parva, h. leucisculus, t. swinhonis and h. swinhonisb were abundant. age structures of fishes were mainly 1 age class in the seine. p. parva, t. swinhonis, c. erythropterus and acheilognathinae, including r. ocellatus, r. lighti and p. imberbis, were the numerically dominant species
用圍網共採到19種魚，其中紅鰭原? 、黑鰭? 、棒花魚、似（魚喬） 、 （ ?又魚） 、麥穗魚、黃（魚幼）等小型魚類居多，以1齡魚為主，紅鰭原? 、似（魚喬） 、麥穗魚和（魚旁） （魚皮）是優勢種群。It also includes an important sample of varzea ecosystems, igapo forests, lakes and channels which take the form of a constantly evolving aquatic mosaic that is home to the largest array of electric fish in the world
保護區內不僅有平坦耕地生態系統、洪泛森林生態系統，還有無數湖泊和河流，這些水域以不同的形式相互演變，為世界上最大的發電魚類種群提供了棲息地。1 the researchers say there has already been a collapse in wild populations of almost one - third of currently fished seafoods
研究人員表示目前有幾乎三分之一的作為漁業海產的野生魚類種群數目大幅下降。It may be argued that each jurisdiction should have the right to establish its own environmental standards and assessment criteria which apply in its own area. however wwf hong kong believes that in view of the fact that many features of the environment of the estuary are common to all jurisdictions eg : the population of chinese white dolphins and the fish populations it is important that common standards should apply to all jurisdictions. the criteria, assessment methods and mitigation measures should be the same across the whole geographical area of potential impact
盡管有人主張每個管轄范圍都有權制定適用本區的環境及評估標準，然而，世界自然基金會認為鑒於三地的三角洲環境共通之處甚多如中華白海豚種群和魚類種群等，因此有關管理準則必須適用於所有管轄區，而面對相同影響的地理區域亦應採取相同的準則評估方法和補償措施。" as the waters around southwest lantau and the soko islands are important fishery spawning and nursery grounds, the plan would contribute to the conservation of fishery resources and building up of fish stocks
發言人說：由於西南大嶼山和索罟群島附近水域是重要的魚類產卵及育苗場，建議的海岸公園亦有助存護漁業資源和增加魚類種群。Phosphates soften water for detergents but contribute to algae blooms in our waterways, which can kill off fish populations
含磷物質：對水有軟化作用，提高清潔能力，但可促進河道產生藻類水花，對魚類種群有殺傷性。Fish populations on coral communities at the hoi ha wan and tung ping chau marine parks, and sharp island in port shelter were studied over the same time period
鄺力存博士亦於同一時期內，研究海下灣和東坪洲海岸公園，以及橋咀洲牛尾海范圍內的珊瑚群落扶養的魚類種群。Protected populations should act to replenish surrounding waters
受保護的魚類種群能增加鄰近水域的魚類資源。Marine reserves, where no - fishing is allowed, have been shown to allow fish populations to recover from overfishing in many countries, but those on coral communities in tung ping chau have shown no change in diversity, abundance or biomass since the park was established
不少國家在設立禁止捕魚的海岸保護區后，都能令以往因過度捕魚而下跌的魚類種群數目回升。但是自海岸公園成立以來，東坪洲的珊瑚群落扶養的魚類種群不論在多樣性數量或生物量方面均無改變。With the wwfs sos campaign, we hope to encourage our government to establish sustainable fishing and restore the health of fish stocks for the benefit of all in hong kong, said dr andy cornish, member of wwf hong kong conservation projects committee and adjudicator of the big fish count
本會環境保育項目委員會成員兼觀魚大賽評判dr . andy cornish表示：香港的海洋生物出乎意料的富饒，單是魚類已有約千種，可惜由於面對過度捕撈和污染等威脅，魚類種群並不健康。分享友人