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1.
白娟  张苗  安建梅 《海洋科学》2019,43(6):119-124
基于对虾鳃虱亚科(Orbioninae)的形态学特征,作者比较了属间存在的差异,对该亚科的分类学研究进展进行了归纳。总结世界范围内对虾鳃虱亚科的地理分布特征,解析该亚科动物地理区系特征。迄今,对虾鳃虱亚科包括8属39种,分别为:异对虾鳃虱属(Anisorbione Bourdon,1981,1种);偏对虾鳃虱属(Asymmetrorbione Boyko,2003,2种);表对虾鳃虱属(Epipenaeon Nobili,1906,8种);小对虾鳃虱属(Minicopenaeon Bourdon,1981,4种);圆对虾鳃虱属(Orbione Bonnier,1900,8种);仿偏对虾鳃虱属(Parasymmetrorbione An,BoykoLi,2013,1种);拟对虾鳃虱属(Parapenaeon Richardson,1904,13种);仿拟对虾鳃虱属(Parapenaeonella Shiino,1949,2种)。在中国各大海域共发现对虾鳃虱亚科物种6属18种。对虾鳃虱亚科形态特征:头前板和底节板发达,体形较大。从形态特征推测的系统发育关系,作者认为对虾鳃虱亚科是寄生亚目寄生于鳃部中比较进化的类群、其地理分布范围受寄主对虾总科分布的限制、物种分布相对集中、主要分布范围于印度-西太平洋海域。根据该亚科主要属种的地理分布信息,作者推测该类群的演化是从环热带古地中海闭合开始,直到始新世。  相似文献   

2.
张昭  刘瑞玉 《海洋科学》2006,30(5):18-27
报告了蝉虾亚科Scyllarinae分类研究最新进展和中国海的种类。根据Holthuis 2002年在蝉虾属ScyllarusFabricius,1775之外为印度-太平洋的种建立了13个新属的最新研究进展,记载中国海蝉虾亚科8属12种,内含1新纪录;讨论了有关的分类问题和地理分布特点,纠正了过去的错误鉴定,分清了种的混淆。  相似文献   

3.
Two species of benthopelagic calanoid Copepoda, Neoscolecithrix cf. magna (Grice, 1972) and N. ornata n. sp., are described from the upper slope off North Cape, New Zealand. Neoscolecithrix ornata is distinguished from other species of Neoscolecithrix Canu, 1896 s.s. that have a female leg 5 terminal segment with 4 spines (2 terminal and 1 on each border) principally by the transverse row of long, fine spines on the female genital double somite; and by the more squat terminal segment of leg 5 (length/width ratio about 3.7). This is the second time Neoscolecithrix has been recorded from New Zealand. A new genus, Cenognatha n. gen., is distinguished from Neoscolecithrix principally because: rostrum short (bearing 2 filaments); mandibu‐lar gnathobase masticatory margin with slender dorsal spinulose seta; maxilla endite 1 with 5 well‐developed setae, endite 3 without brush‐like sensory seta, endopod usually with 3 long worm‐like sensory setae and 5 brush‐like setae; posterodistal border of basis of legs 1–3 without spines; distal segment of female leg 5 and its basis subequal in length; male leg 5 of similar lengths on both sides (styliform on right), endopod present at least on 1 side, 1‐segmented and spine‐like on right.  相似文献   

4.
During spring and autumn of 2006,the investigations on abundance,carbon biomass and distribution of picoplankton were carried out in the southern Huanghai Sea(Yellow Sea,sHS) . Three groups of picoplankton-Synechococcus(Syn) ,Picoeukaryotes(PEuk) and heterotrophic bacteria(BAC) were identified,but Prochlorococcus(Pro) was undetected. The average abundance of Syn and PEuk was lower in spring(5.0 and 1.3 × 10 3 cells/cm 3,respectively) than in autumn(92.4 and 2.7 × 10 3 cells/cm 3,respectively) ,but it was opposite for BAC(1.3 and 0.7 × 10 6 cells/cm 3 in spring and autumn,respectively) . And the total carbon biomass of picoplankton was higher in spring(37.23 ± 11.67) mg/m 3 than in autumn(21.29 ± 13.75) mg/m 3 . The ratios of the three cell abundance were 5:1:1 341 and 30:1:124 in spring and autumn,respectively. And the ratios of carbon biomass of them were 5:7:362 and 9:4:4 in spring and autumn,respectively. Seasonal distribution characteristics of Syn,PEuk,BAC were quite different from each other. In spring,Syn abundance decreased in turn in the central waters(where phytoplankton bloom in spring occurred) ,the southern waters and inshore waters of the Shandong Peninsula(where even Syn was undetected) ;the high values of PEuk abundance appeared in the central and southern waters and the inshore of the Shandong Peninsula;the abundance of BAC was nearly three order of magnitude higher than that of photosynthetic picoplankton,and high values appeared in the central waters. In autumn,Syn abundance in central waters was higher than that in surrounding waters,while for PEuk abundance,it decreased in turn in the inshore waters of the Shandong Peninsula,the southern waters and the central waters;BAC presented a complicated blocky type distribution. Sub-surface maximum of each group of picopalnkton appeared in both spring and autumn. Compared with the available literatures concerning the studied area,the range of Syn abundance was larger,and the abundance of BAC was higher. In addition,the conversion factors for calculating picoplanktonic carbon biomass were discussed,with the conversion factors which are different from previous studies in the same surveyed waters. The result of regression analysis showed that there was distinct positive correlation between BAC and photosynthetic picoplankton in spring(r=0.61,P 0.001) ,but no correlation was found in autumn.  相似文献   

5.
2015年10月中旬,在浙江省舟山市近海的渔业资源调查中采集到天竺鲷标本,经鉴定发现其中黑边银口天竺鲷为浙江新纪录种。本文对采集的6尾黑边银口天竺鲷标本拍摄照片并开展形态特征和DNA条形码研究,对该种的拉丁学名进行校正。黑边银口天竺鲷的有效学名为Jaydia truncata(Bleeker,1854)。具有以下主要形态特征:背鳍鳍条数VII+I,9,胸鳍鳍条数16—17;背前鳞数4;第一鳃弓总鳃耙数3—4+11—13,发达鳃耙数1+9—10,角鳃弓上的鳃耙数9;前鳃盖骨边缘锯齿状;第一背鳍上端黑色,第二背鳍及尾鳍边缘黑色,第二背鳍与臀鳍中部各具一黑色纵纹。本研究分析了浙江海域5种天竺鲷科鱼类的形态差异,并编制了检索表。测定了6尾标本的DNA条形码,结合Gen Bank中所有学名为Jaydia truncata及其同种异名的同源序列分析,发现所有个体明显分为两个分支,且两者遗传距离达到0.149,表明两分支可能为不同的有效种,Gen Bank中只有AB890050和JQ681488与本研究序列结果相近。  相似文献   

6.
Surface water samples were collected in the north Atlantic Ocean in July–August 1983. Their apparent complexation capacity for copper (CCCu) was determined on board, using differential pulse anodic stripping voltammetry under clean room conditions. Measurements were carried out by direct titrations as well as after equilibration of copper spikes. CCCu and conditional stability constants (K′) were calculated, by means of three different methods, which are compared.On the basis of salinity, temperature, silicate and phosphate concentrations the following surface waters could be distinguished: North Atlantic Drift (I), East Greenland Current (II), Labrador Current (III) and Gulf Stream waters (IV, V). CCCu and K′ were found to differ between these waters. The range of values for CCCu and their mean values given in parentheses, as calculated from van den Berg plots for waters I–IV are: I, 53–65 (59); II, 47–66 (55); III, 37–53 (45); IV, 20–42 (33) nM Cu. The range and mean values for log K′ are: I, 8.23–8.33 (8.28); II, 7.89–8.11 (7.98); III, 8.40–8.41 (8.41); IV, 7.90–8.21 (8.06).Information on complexation kinetics extracted from the titration curve revealed that kf is area-specific. The complexation rate constant in the northern part (Area I) is about two times larger than that in the southern area IV, (3.6 ± 0.3) and (2.2 ± 0.2) × 104s−1M−1 Cu, respectively.Preliminary results for deep water samples suggest smaller but still existent CCCu and higher K′ than those found for surface waters.  相似文献   

7.
Biochemicalgeneticstructureandidentificationofhairtailfish(Trichiurus)populationsinChinesecoastalwaters¥WangKeling;ZhangPeiju...  相似文献   

8.
鳚亚目鱼类是鲈形目中较大的一个亚目,现知全世界有127属,700余种(Nelson,1994)。目前还不断有新种发现,多数为海洋鱼类,世界性分布。 鳚亚目鱼类大多体型较小,对它们的研究也少。随着科学技术的发展和研究方法的不断完善,人们对这一类群的认识也愈来愈深入,其种类、区系与动物地理学等方面的特点正逐渐为研究者所揭示。其中有些种类由于在海洋生态学、环境生物学和渔业生产上具有重要意义而吸引着许多鱼类学家和生态学家的注意和对其进行研究(Kotrschal,1992;Springer,1993;Stepien,1993)。 印度-西太平洋是鳚亚目鱼类种类最多的海区之一,中国及周边国家和地区在此领域已有一定的研究基础。日本学者Masuda等(1984)总结了日本沿岸鳚亚目鱼类有86属212种,菲律宾已知有36属80余种(Herre,1953)。中国是世界上海岸线最长的国家之一,适合于鳚亚目鱼类栖息的生境相当广泛,种类也相当丰富。作者根据目前已掌握的标本和文献资料,经初步分析得出中国海区现有鳚亚目鱼类33属78种。  相似文献   

9.
Details are given of gut‐content analyses for nine fish species from the Avon‐Heathcote Estuary, Christchurch, New Zealand: sand flounder, Rhombosolea plebeia (Richardson); yellow‐bellied flounder, R. leporina (Hutton); common sole, Peltorhamphus novaezeelandiae (Gunther); yellow‐eyed mullet, Aldrichetta forsteri (Cuvier & Valenciennes); kahawai, Arripis trutta (Bloch & Schneider); spotty, Pseudolabrus celidotus (Bloch and Schneider); cockabully, Tripterygion nigripenne (Cuvier & Valenciennes); common bully, Gobiomorphus basalis (Gray); and globefish, Spheroides richei (Freminville). The percent occurrences of each food type recorded over Ihe sampling period (April 1965‐April 1966) for each species are compared. Monthly food tables are given for those species of which suitably large samples were obtained (sand flounder, yellow‐bellied flounder, common sole, yellow‐eyed mullet, and globefish). Where possible, the dietary occurrence of different food types is related to environmental and other factors observed or considered likely to influence food selection.  相似文献   

10.
本研究对2006—2018年间在西沙群岛、海南岛采集的裸鳃类样品进行研究,共鉴定出叶海牛科种类10种,包括4个南海新记录种(PhyllidiellacooraburramaBrunckhorst,1993;Phyllidiella lizae Brunckhorst, 1993; Phyllidiopsis striata Bergh, 1888; Phyllidiopsis krempfi Pruvot-Fol, 1957)。文中对南海新纪录种进行了重新描述。通过对比嗅角颜色、口触角形状等形态差异,本研究支持将我国叶海牛科(Phyllidiidae)进一步划分为3个属(Phyllidia、Phyllidiella、Phyllidiopsis)。  相似文献   

11.
中国近海爱尔螺亚科九新记录(腹足纲:骨螺科)   总被引:2,自引:0,他引:2  
张素萍 《海洋与湖沼》2007,38(6):542-548
提要为了全面了解中国沿海骨螺科(Muricidae)、爱尔螺亚科(Ergalataxinae)的物种数量、分布状况和生活习性,完成中国沿海骨螺科的系统分类学研究,采用传统的形态分类方法,对中国科学院海洋研究所历年来在我国沿海采集的骨螺科标本进行整理、分类,共鉴定出爱尔螺亚科7属,18种,其中9种为中国新记录。爱尔螺亚科主要分布于印度-西太平洋暖海区,通常栖息于潮间带至浅海水深5—200m左右的岩礁、沙、泥沙或砂砾质海底。作者依据Houart等(1995,2004)报道的分类方法,对我国沿海分布的爱尔螺亚科部分归属及种名使用混乱的种,如珠母爱尔螺Ergalatax margariticola、黄口帕斯螺Pascula ochrostoma、筐格螺Muricodrupa fiscella等常见种重新分类,分别将其归属于爱尔螺属(Ergalatax)、帕斯螺属(Pascula)和格螺属(Muricodrupa)。  相似文献   

12.
Vertical and horizontal distributions are described for megalopae of 11 brachyuran taxa common to the lower Chesapeake Bay and adjacent shelf. Three distribution patterns are apparent from horizontal distribution.
1. (1) More than 75% of the megalopae of estuarine adults, such as Hexapanopeus angustifrons, Neopanope sayi, Panopeus herbstii, Rhithropanopeus harrisii and Pinnotheres ostreum, are retained in estuarine waters.
2. (2) The megalopae of three estuarine taxa, Callinectes sapidus, Uca spp. and Pinnixa sp., are most abundant on the shelf.
3. (3) More than 90% of the megalopae of the shelf species, Portunus sp., Cancer irroratus and Libinia spp. remained in shelf waters.
Vertical distributions indicate the megalopae of a majority of estuarine crabs are epibenthic when waters are stratified. Exceptions include the megalopae of both Rhithropanopeus which are found slightly shallower in well mixed waters and Callinectes sapidus which are generally most abundant in the neuston. The megalopae of two shelf species, Portunus sp. and Cancer irroratus, reach highest densities in surface waters, while those of Libinia spp. are common in the epibenthos.Megalopal distributions analyzed with respect to water column stratification show megalopae never reached highest densities within the layer of the pycnocline. The megalopae of five species show significant shifts in vertical distributions between stratified and homogeneous water columns.  相似文献   

13.
南沙群岛海区毛颚动物的昼夜垂直移动   总被引:10,自引:2,他引:10  
对1997年11月和1999年4月、7月在南沙群岛海区3个昼夜连续测站采集的毛颚动物样品进行了研究。结果表明,这些水域的毛颚动物的昼夜垂直移动可以划分为3个类型:种类作显著移动,不作显著移动和仅在夜晚移动。作为昼夜垂直移动显著的种类,又可以把它们划分为:(1)种类在整个水柱移动;(2)种类在上层(0-60m)移动;(3)种类在中层(60-100m)移动。作为昼夜垂直移动不明显的种类,又可以把它们分为:(1)种类分布在于上层(0-60m)。(2)种类分布于底层(100-200m)。种类在白天下降或附着在海底物体上,仅在夜晚移动。光照,水温,食物和种类特征是影响本水域毛颚动物昼夜垂直移动的重要因素。  相似文献   

14.
Nine species of Prionospio complex are recorded from China’s waters, including one new species and six newly recorded species. Prionospio (Prionospio) pacifica sp. nov., is characterized by having first and forth pairs of branchiae pinnate, second and third pairs of apinnate, ventral crest on Setiger 9 and dorsal crests on Setigers 10—25. Apoprionospio kirrae (Wilson, 1990), Prionospio (Aquilaspio) convexa Imajima, 1990, Prionospio (Minuspio) multibranchiata Berkeley, 1927, Prionospio (Prionospio) bocki Sderstrm, 1920, Prionospio (Prionospio) dubia Maciolek, 1985 and Prionospio (Prionospio) paradisea Imajima, 1990 are recorded for the first time from China’s waters.  相似文献   

15.
16.
Abundant planktonic copepods which have been attributed toAcartia clausi in Japanese coastal and inlet waters were revised by examining specimens from various localities. It is concluded that they consist of two species,A. omorii andA. hudsonica, and no other closely related species occur in Japanese waters.A. omorii is widespread in coastal waters and bays, whileA. hudsonica is strictly confined to brackish waters and closed embayments, in which the two species usually co-occur. The two species are readily distinguished by the shape of the inner lobe of the 3rd segment of the right 5th leg in the male. But the relative lengths of the 2nd and 3rd segments of the male left 5th leg, which separate the two species in Bradford's key to the subgenusAcartiura, did not differ clearly between the specimens of the two species examined here. The body size is also an important distinctive character of the two species especially when water temperature is low.1985 11 29, 1986 2 10, 1986  相似文献   

17.
Characteristic organisms are tabulated, and the substrate conditions briefly described for seven habitats in the Avon‐Heathcote Estuary, Christchurch, New Zealand. Temperatures and water movements within the estuary are outlined.

From April 1965 to April 1966, samples were collected by short otter‐trawl shots, gill netting, beach seine hauls, and dip netting; the limitations of the gear are noted. The distributions and movements are recorded for nine fish species : sand flounder, Rhombosolea plebeia (Richardson) ; yellow‐bellied flounder, Rhombosolea leporina (Hutton) ; common sole, Peltorhamphus novae‐zeelandiae (Gunther) ; ye'llow‐eyed mullet Aldrichetta forsteri (Cuvier and Valenciennes); kahawai, Arripis trutta (Bloch and Schneider); spotty, Pseudolabrus celidotus (Bloch and Schneider); cockabully, Tripterygion nigripenne (Cuvier and Valenciennes) ; common bully, Gobiomorphus basalis (Gray); and globe fish, Spheroides richei (Freminville).

Length‐frequency distributions showed that most of the nine species of fish used the estuary as a feeding area for adults and as a nursery area. Only two species did not migrate to and from the sea.

Length‐weight relationships for eight species showed that weight was a function of length approximately cubed, and that the exponential equation could be used to predict weight from length.

Regressions of caudal fin length on standard length for four species gave a positive correlation (r = +0.95). Relative proportions of body length to caudal fin length were related to habitat; fish of benthic habits had proportionally shorter caudal fins than pelagic fish.  相似文献   

18.
Vypeen, an island of Cochin estuarine system, acts as the spawning site of several marine and estuarine fishes. We assumed that, physical process(upwelling) make changes in hydrography and the production of chlorophyll a in coastal waters off Vypeen. These alterations can influence the zooplankton abundance and copepod community structure in that area. For justifying this hypothesis, samples were collected from Vypeen at 10 m and 30 m locations during January(pre-southwest monsoon), August(late-southwest monsoon) and November(postsouthwest monsoon) 2014. During August, subsurface water column was cool, nutrient rich and less oxygenated(signatures of upwelling) than in November and January. Maximum concentrations of nitrate and chlorophyll a were recorded during August. In the present study, 15 zooplankton groups were recorded; of which copepods were the most predominant group(73%–90%). Copepod density in the present study ranged between 527.2 ind./m~3 and 5 139.2 ind./m~3. Totally, 37 copepods species were reported in present study and copepod species richness was higher during January. The abundance of zooplankton and copepods was high in August during late-southwest monsoon. These variations were closely associated with the coastal upwelling in August and weakening of moderate upwelling in November. In SIMPER analysis, it was found that the copepods species distribution was similar within season and dissimilar between the three seasons. Moreover, the higher abundance of upwelling indicator species Temora turbinata was recorded in August, which confirms the signs of seasonal upwelling in Vypeen. The present study emphasized on the influence of hydrographical parameters associated with physical process, in governing the copepod community organization of the Vypeen Island.  相似文献   

19.
2013年春季和夏季对长岛周边海域进行了环境与生物综合调查,利用多元统计分析对长岛周边海域浮游植物分布及其影响因素进行分析。根据水环境分析结果对调查海域进行聚类分析,结果表明,春季(M1、M2)与夏季(A1、A2)均可分为两大类。M1与A2为高温高营养盐区,M2与A1为低温低营养盐区。调查期间,共发现69种浮游植物。硅藻为两季主要浮游植物,春季浮游植物细胞丰度远大于夏季。春季共发现1种明显的优势种,为柔弱几内亚藻(Guinardia delicatula(Cleve)Hasle)。夏季共发现5种优势种,分别为具槽帕拉藻(Paralia sulcata)、裸甲藻(Gymnodinium sp.)、圆筛藻(Coscinodiscus sp.)、离心列海链藻(Thalassiosira eccentrica)与具齿原甲藻(Prorocentrum dentatum)。影响春季浮游植物分布的最佳解释变量组合为温度(WT)、透明度(SD)、风速(WS)和溶解总碳(DTC)组合,其中,温度影响最显著(极显著负相关);夏季则为盐度(S)、活性磷酸盐(SRP)和N/Si组合,其中活性磷酸盐影响最大(显著负相关)。  相似文献   

20.
Twelve species of barnacles were identified from the fouling community on the parts of the ‘Maui’ oil platform that were submerged during its tow from Japan in 1975 and after its arrival in New Zealand. The stalked barnacles Lepas anatifera L. var. (a) Darwin, L. anserifera L., Conchoderma auritum (L.), and C. virgatum (Spengler) probably settled during the tow across the tropical Pacific, and have been recorded in New Zealand waters before from ships (the Lepas spp.) and vertebrates (the Conchoderma spp.). The acorn barnacles were small, and probably settled in Japanese waters; Balanus variegatus Darwin and B. amphitrite Darwin already occur in northern New Zealand waters. The other six species—B. improvisus Darwin, B. albicostatus Pilsbry, B. reticulatus Utinomi, Megabalanus volcano (Pilsbry), M. rosa (Pilsbry), and Tetraclita squamosa japonica Pilsbry—have not been recorded from New Zealand before.  相似文献   

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