鱼油脂肪酸组成及其含量分析     

朱碧英  管昀春  陈全震 《海洋学研究》1999,(2)

分析测定了鱼是鱼鱼油的脂肪酸组成、含量及分布范围。脂肪酸组成从１４碳到２２碳。其中具有生理功能活性物质的二十碳五烯酸（ＥＰＡ）、二十二碳六烯酸（ＤＨＡ）占总量的２１％左右。比较了东海１４种鱼的鱼油中ＥＰＡ、ＤＨＡ含量的高低,得出鱼是鱼鱼油中的ＥＰＡ、ＤＨＡ含量除低于鲣鱼外,均高于乌贼、小黄鱼、白姑鱼、银鲳鱼、鳓鱼和黄姑鱼等名贵海鱼。  相似文献   

酶谱相似度指数与鱼类种间亲缘关系初探   总被引：5，自引：1，他引：4  

姜建国  张颖 《海洋湖沼通报》1999,(1):30-33

对青鱼、草鱼、链、鳙的20种同工酶之间的酶谱相似度指数进行了统计和比较,聚类分析的结果表明,所提出的酶谱相似度指数能将4种鱼所属的亚科正确归类,证明是预测种间亲缘关系的一种较客观、简便的方法。  相似文献   

An expectation maximization and smoothing approach for indirect acoustic estimation of fish size and density     

Hedgepeth  J. B.; Gallucci  V. F.; O'Sullivan  F.; Thorne  R. E. 《ICES Journal of Marine Science》1999,56(1):36-50

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Spatial distribution of grossly visible diseases and parasites in flounder (Platichthys flesus) from the Baltic Sea: a synoptic survey     

Lang  T.; Mellergaard  S.; Wosniok  W.; Kadakas  V.; Neumann  K. 《ICES Journal of Marine Science》1999,56(2):138-147

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The effect of artificial light on escapement beneath a survey trawl   总被引：1，自引：0，他引：1  

Weinberg  K. L.; Munro  P. T. 《ICES Journal of Marine Science》1999,56(3):266-274

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鮸状黄姑鱼早期发育阶段的摄食与生长特性   总被引：9，自引：0，他引：9  

张雅芝  郑斯电 《海洋与湖沼》1999,30(2):117-126

1997年4－5月,在集美大学水产学院海水育苗试验场,采用生态学方法对人工培育的状黄姑鱼仔、稚、幼鱼的援食和生长特性进行分析。结果表明,在人工培育条件下,仔、稚、幼鱼的摄食率达97.9％,摄食量占体重的1．4％－23．4％,日摄食量占体重的36．47％－6519％;摄食具明显的昼夜节律,黄昏和早晨为摄食高峰;对较大个体的饵料生物有明显的选择性;饵料密度对摄食量有一定影响。摄食量与体重的关系式为y=0.1327x＋0．5613,全长与日龄的关系式为LT=2.5799eg.g516D,体重与日龄的回归方程为W=0．0537e‘.1786D,全长与体重的回归方程为W＝0．0042L。  相似文献   

Sea surface ichthyoplankton off southeastern New Zealand,summer 1977–78     

D. A. Robertson  Satoshi Mito 《新西兰海洋与淡水研究杂志》2013,47(3):415-424

Plankton samples from the Chatham Rise, Pukaki Rise, and Campbell Plateau provided information on the young stages of a number of poorly known New Zealand fish species, and on the presence of a large spawning area of barracouta, Thyrsites atun, over the Mernoo Bank, The Chatham Rise was more important as a spawning area than the areas further south.  相似文献   

Pycnogonida of the snares islands∗     

W. C. Clark 《新西兰海洋与淡水研究杂志》2013,47(2):329-341

Eight species of Pycnogonida collected by University of Canterbury Expeditions and the New Zealand Oceanographic Institute are recorded from the Snares Islands, which lie at 48° 05’ S, 166° 20’ E, 60 miles SW of South Cape, Stewart Island. The following species are recorded: Pallenopsis obliqua (Thomson, 1884), Cheilopallene trappa n.sp., Ammothea magniceps Thomson, 1884, Achelia dohrni (Thomson, 1884), Tanystylum cavidorsum Stock, 1957, Ascorhynchus insularum n.sp., Austrodecus minutum n.sp. and Austrodecus enzoi n.sp.  相似文献   

Diel changes in the abundance and size composition of invertebrate drift in five rivers in South Island,New Zealand     

P. M. Sagar  G. J. Glova 《新西兰海洋与淡水研究杂志》2013,47(1):103-114

Drift was collected over 24‐h periods in five rivers in South Island, New Zealand, to determine whether diel periodicity was consistent across a range of river types, and whether the pattern was similar for different life stages/sizes of selected taxa. Total drift density (numbers per 100 m³ ) of aquatic invertebrates was greater at night than during the day in all rivers; peak abundance occurred shortly after sunset in clear water rivers and shortly before sunrise in a turbid, glacier‐fed river. Densities of drifting Deleatidium spp., Nesameletus spp. (both Ephemeroptera), Aoteapsyche spp., and Hydrobiosidae (both Trichoptera), were generally greater at night than during the day. However, the timing of peak abundance in the drift for other common taxa varied between rivers. Larger Deleatidium spp. larvae (> 1.00 mm head width) were more common in the drift at night than during the day in all rivers. However, this was not apparent for Aoteapsyche spp. and Hydrobiosidae, for which diel differences in the size of drifting animals were not consistent even within the same river. The propensity for some aquatic invertebrates to drift at night may influence fish feeding behaviour, particularly with respect to the timing of feeding and the species or life history stages of their prey.  相似文献   

Distribution of fish in tributaries of the lower Taieri/Waipori rivers,South Island,New Zealand     

Bruno O. David  Gerard P. Closs  Chris J. Arbuckle 《新西兰海洋与淡水研究杂志》2013,47(4):797-808

The distribution of fish within eight small streams feeding into the lower Taieri and Waipori Rivers on the east coast of New Zealand's South Island was examined. A total of eight native and two introduced species were recorded. Eels (Anguilla spp.) and giant kokopu (Galaxias argenteus Gmelin) were the most widely distributed species being located in all streams surveyed. Common bullies (Gobiomorphus cotidianus McDowall) and brown trout (Salmo trutta Linnaeus) were also widely distributed being detected in seven and six of the streams respectively. Three streams of potential conservation significance were identified. These were Picnic Gully Creek which contained a significant population of banded kokopu (Galaxias fasciatus Gray), a Category C threatened species, and Cullens and Alex Creeks which contained significant populations of giant kokopu, a Category B threatened species. The population of giant kokopu in Cullens and Alex Creeks currently represents the largest known population of this species on the east coast of New Zealand (excluding Southland). It has been suggested that brown trout may influence the distribution of native galaxiids. The longitudinal distribution of giant kokopu and brown trout in streams was examined at night using a continuous spotlight sampling approach. Distributions of these two species rarely overlapped at a local scale. Coarse habitat use data indicated that brown trout regularly occupied a variety of habitat types including modified agricultural channels. In contrast, giant kokopu rarely used agricultural channels being predominantly located in pool habitats.  相似文献