VARIATIONSOFCOMMUNITYSTRUCTURE，DIVERSTITYANDBIOMASSOFDEMERSALFISHASSEMBLAGEINTHEBOHAISEABETWEEN1982～

ＶＡＲＩＡＴＩＯＮＳＯＦＣＯＭＭＵＮＩＴＹＳＴＲＵＣＴＵＲＥ，ＤＩＶＥＲＳＴＩＴＹＡＮＤＢＩＯＭＡＳＳＯＦＤＥＭＥＲＳＡＬＦＩＳＨＡＳＳＥＭＢＬＡＧＥＩＮＴＨＥＢＯＨＡＩＳＥＡＢＥＴＷＥＥＮ１９８２～１９８３ＡＮＤ１９９２～１９９３ＪｉｎＸｉａｎｓｈ...     

鄱阳湖渔区的团头鲂胚胎发育观察

鄱阳湖渔区的团头鲂胚胎发育观察ＯＲＳＥＲＶＡＴＩＯＮＳＯＮＴＨＥＥＭＢＲＹＯＮＩＣＤＥＶＥＬＯＰＭＥＮＴＯＦＭＥＧＡＬＯＢＲＡＭＡＡＭＢＬＹＣＥＰＨＡＬＡＩＮＴＨＥＦＩＳＨＩＮＧＡＲＥＡＳＯＦＰＯＹＡＮＧＬＡＫＥ虞鹏程张丰旺（南昌大学生物科学工程系,...     

COMPARISON OF LIPIDS AND NITROGENOUS EXTRACTIVES OF DANUBLAN WELS AND CHINESE CATFISH

ＣＯＭＰＡＲＩＳＯＮＯＦＬＩＰＩＤＳＡＮＤＮＩＴＲＯＧＥＮＯＵＳＥＸＴＲＡＣＴＩＶＥＳＯＦＤＡＮＵＢＬＡＮＷＥＬＳＡＮＤＣＨＩＮＥＳＥＣＡＴＦＩＳＨＸｕｅＣｈａｎｇｈｕｏ（ＯｃｅａｎＵｎｉｖｅｒｓｉｔｙｏｆＱｉｎｇｄａｏ，２６６００３）ＷａｎｇＪｉａ...     

增殖太湖新银鱼水体主要生态因子的研究

增殖太湖新银鱼水体主要生态因子的研究ＲＥＳＥＡＲＣＨＯＦＭＡＩＮＥＣＯＬＯＧＩＣＡＬＦＡＣＴＯＲＳＯＦＷＡＴＥＲＳＩＮＷＨＩＣＨＮＥＯＳＡＬＡＮＸＴＡＩＨＵＥＮＳＩＳＨＡＶＥＢＥＥＮＭＵＬＴＩＰＬＩＣＡＴＥＤ王玉芬盖玉欣（中国水产科学研究院淡水渔业研...     

盐度对黑鲷卵巢发育的影响

盐度对黑鲷卵巢发育的影响施兆鸿（东海水产研究所，上海２０００９０）关键词黑鲷，卵巢发育，盐度ＥＦＦＥＣＴＳＯＦＳＡＬＩＮＩＴＹＯＮＯＶＡＲＩＡＮＤＥＶＥＬＯＰＭＥＮＴＯＦＳＰＡＲＵＳＭＡＣＲＯＣＥＰＨＡＬＵＳ￥ＳｉｎＺｈａｏｈｏｎｇ（ＥａｓｔＣｈｉｎ...     

大口黑鲈仔、稚鱼生长和食性的观察

大口黑鲈仔、稚鱼生长和食性的观察陆伟民（上海水产大学，２０００９０）关键词大口黑鲈，仔、稚鱼，生长，食性ＯＢＳＥＲＶＡＴＩＯＮＯＮＧＲＯＷＴＨＡＮＤＦＥＥＤＩＮＧＨＡＢＩＴＳＯＦＬＡＲＧＥＭＯＵＴＨＢＡＳＳ，ＭＩＣＲＯＲＴＥＲＵＳＳＡＬＭＯＩＤＥＳ，...     

养殖欧洲鳗鲡狂游病病理变化的电镜观察

养殖欧洲鳗鲡狂游病病理变化的电镜观察ＥＬＥＣＴＲＯＮＭＩＣＲＯＳＣＯＰＩＣＯＢＳＥＲＶＡＴＩＯＮＯＮＰＡＴＨＯＬＯＧＩＣＣＨＡＮＧＥＳＯＦＩＲＲＩＴＡＢＬＥＳＷＩＭＤＩＳＥＡＳＥＡＳＳＯＣＩＡＴＥＤＷＩＴＨＣＵＬＴＵＲＥＤＥＵＲＯＰＥＮＥＥＬ樊海平徐...     

草鱼血清生长激素水平的日变化

草鱼血清生长激素水平的日变化ＤＡＩＬＹＶＡＲＩＡＴＩＯＮＳＯＦＳＥＲＵＭＧＲＯＷＴＨＨＯＲＭＯＮＥＬＥＶＥＬＳＩＮＧＲＡＳＳＣＡＲＰ￥ＺｈａｎｇＷｅｉｍｉｎａｎｄＬｉｎＨａｏｒａｎ（ＢｉｏｌｏｇｙＤｅｐａｒｔｍｅａｔｏｆＺｈｏｎｇｓｈａｎＵｎｉｖｅｒ...     

罗氏沼虾幼体及成虾消化酶活性

罗氏沼虾幼体及成虾消化酶活性魏华，赵维信（上海水产大学，上海２０００９０）关键词罗氏沼虾，幼体，消化酶ＴＨＥＡＣＴＩＶＩＴＩＥＳＯＦＤＩＧＥＳＴＩＶＥＥＮＺＹＭＥＳＯＦＬＡＲＶＡＥＡＮＤＡＤＵＬＴＩＮＭＡＣＲＯＢＲＡＣＨＩＵＭＲＯＳＥＮＢＥＲＧＩＩ￥...     

盐度及钙镁离子对中华绒螯蟹大眼幼体育成Ⅲ仔蟹的成活率和生长的影响

盐度及钙镁离子对中华绒螯蟹大眼幼体育成Ⅲ仔蟹的成活率和生长的影响ＥＦＦＥＣＴＳＯＦＴＨＥＡＭＢＩＥＮＴＳＡＬＩＮＩＴＹＡＮＤＴＨＥＡＭＢＩＥＮＴＣａ２＋、Ｍｇ２＋ＣＯＮＣＥＮＴＲＡＴＩＯＮＯＮＴＨＥＳＵＲＶＩＶＡＬＡＮＤＧＲＯＷＴＨＯＦＥＲＩＯＣＨＥ...     

驼背鲈(Chromileptes altivelis)的胚胎发育及仔、稚、幼鱼形态观察

对驼背鲈(Chromileptes altivelis)的胚胎发育及仔、稚、幼鱼的形态特征进行了详细的观察与研究,描述了从受精卵到仔、稚、幼鱼各发育期的时间和形态特征变化。结果表明,在水温25-26℃、盐度30的海水中,受精卵历时27 h 25 min完成整个胚胎发育过程,经历从卵裂、囊胚、原肠、神经胚到肌节形成、各器官的逐渐形成、变化、完善等一系列的胚胎发育和变化过程;根据其卵黄囊消长情况、鳞片的覆盖状态、体色发生的不同变化以及第二背鳍和腹鳍的消长,将胚后发育分为仔、稚、幼鱼3个阶段。在水温22-26℃、盐度29-31、DO≥5 mg/L的条件下,2-3 d仔鱼卵黄囊消失,开口摄食;生长发育至31 d,仔鱼已变态进入稚鱼期;培育至57 d,稚鱼完成变态,成为幼鱼。第二背鳍棘和腹鳍棘的生长与收缩等石斑鱼类早期发育的共性生长特征及其体表特性体色变化特征为驼背鲈胚后发育过程中最明显的特征。     

Marine and coastal protected and conserved areas strategy in Brazil: Context,lessons, challenges,finance, participation,new management models,and first results

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Anguilla huangi Teng, Lin, and Tzeng, 2009, is a junior synonym of Anguilla luzonensis Watanabe, Aoyama, and Tsukamoto, 2009

Anguilla luzonensis and A. huangi were each described in 2009 using eels obtained from northern Luzon Island. We examined the taxonomic status of these two groups of eels using morphological and molecular genetic characters. There were no significant differences in two vertebrae counts between eels of A. luzonensis and A. huangi. Mitochondrial 16S ribosomal RNA and cytochrome b genes sequences were obtained and compared among 28 specimens of A. luzonensis, the holotypes of A. luzonensis and A. huangi, and one specimen of the other 15 anguillid species. The specimens of A. luzonensis exhibited almost identical sequences, including the holotype, with only a few site differences, and the genetic difference between the holotypes of A. luzonensis and A. huangi was within the range of differences of specimens of A. luzonensis. The other anguillid species were genetically very different from A. luzonensis and A. huangi, although A. interioris is a closely related species. It is clear that A. luzonensis and A. huangi are the same species, and according to the principle of priority in zoological nomenclature, A. luzonensis Watanabe, Aoyama, and Tsukamoto, 2009 is the valid species name, and A. huangi Teng, Lin, and Tzeng, 2009 is a junior synonym of A. luzonensis.     

Brazilian wetlands: their definition,delineation, and classification for research,sustainable management,and protection

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Effects of levamisole,echinacea, and thyme oral administration on growth factors,blood parameters,and immunity in beluga,Huso huso

A total of 180 fish (95.50 g) were fed with 0.1% levamisole, 0.5% thyme, and 0.5% echinacea crude extract for 60 days. The control group received no stimulant. The results of growth parameters indicated a significant positive effect of levamisole in comparison with the control group, though it was not significantly different from echinacea and thyme treatments (P > 0.05). No mortalities were observed in the treatments. Feed conversion ratio and protein efficiency ratio did not differ significantly between the treatments. The highest numbers of white and red blood cells and the greatest amounts of hemoglobin and hematocrit were detected in the levamisole treatment, showing significant differences with the other groups in the percentage of hemoglobin only (P < 0.05). The highest levels of MCH and MCHC were also measured in the levamisole treatment. Differential count of white blood cells revealed no significant differences in neutrophil and lymphocyte levels with the control. There was a significant increase in the percentage of eosinophil in the levamisole treatment alone. No significant differences were recorded in total protein, albumin, and aspartate aminotransferase and alanine aminotransferase enzymes. Levamisole treatment displayed the highest activities of glutathione peroxidase and lysozyme as well as the greatest amount of immunoglobulin. So 0.1 levamisole yielded better results in the growth, blood, and immunity parameters and can be used as a stimulant without injuring body organs.     

Compositional differences,antioxidant activity,angiotensin-converting enzyme inhibition,and sensory characteristics of kamaboko fermented in wheat,rice, brown rice,and soybean koji

Fisheries Science - Fermentation of kamaboko in koji with wheat (KW), rice (KR), brown rice (KB), or soybean (KS) was performed by simulation of tofuyo processing. Moisture and protein content...     

Coral communities of Biscayne Bay,Florida and adjacent offshore areas: diversity,abundance, distribution,and environmental correlates

• 1. Hardbottom habitats of Biscayne Bay, a shallow lagoon adjacent to the city of Miami, Florida, USA, contain a limited number of coral species that represent a small subset of the species found at nearby offshore hardbottom and reef habitats of the Florida Reef Tract. Although the physical characteristics of this basin make it a marginal environment for coral growth, the presence of dense populations of Siderastrea radians and Porites furcata indicate that these, as well as other corals that are found at lower densities, are able to tolerate extreme and fluctuating conditions. Three factors, temperature, sedimentation, and salinity, appear to limit coral abundance, diversity, and distribution within Biscayne Bay.
• 2. Temperatures exhibit high frequencies of extreme high and low values known to cause coral stress and mortality elsewhere. Similarly, sedimentation rates are very high and sediment resuspension caused by currents, storms and boating activities commonly bury corals under sediment layers. Sediment burial was shown experimentally to influence growth and mortality of S. radians.
• 3. The salinity of Biscayne Bay is influenced by freshwater inputs from canal, sheetflow and groundwater sources that create a near‐shore environment with low mean salinity and high salinity fluctuation. Coral communities along this western margin have the lowest coral density and species richness. Chronic exposure to low salinity was shown experimentally to cause a decrease in the growth of S. radians.
• 4. The location of Biscayne Bay, downstream of a large restoration effort planned for the Everglades watershed, highlights the need to understand the relationship between the physical environment and the health of benthic communities. The data presented here provide the type of scientific information needed so that management decisions can take into account the potential impacts of human activities on the health of coral populations that are already near their tolerance limits for temperature, salinity, and sedimentation.

Copyright © 2003 John Wiley & Sons, Ltd.     

Effect of Salinity on Embryonic Development,Hatchability, and Growth of African Catfish,Clarias gariepinus,Eggs and Larvae

Abstract

Effects of salinity on embryonic development and growth of African catfish, Clarias gariepinus, eggs and larvae were studied. Eggs were incubated at 27-29°C in 2,4,6,8, and 10 ppt sodium chloride. Rate of embryonic development was delayed in all salt solutions by 15, 15,28 and 30 minutes, in 2,4,6, and 8 ppt sodium chloride, respectively, when compared with the control group (0% salt); total mortality occurred at 12 hours after gastrula stage in the 10 ppt concentration. Percentage hatching was 45.1,47.7, 59.5,49.2, and 26.6% while percentage deformity was 10.4, 16.1, 52.0, 28.6, and 71.6% in 0, 2, 4, 6, 8, and 10 ppt salt treatments, respectively. There were significant differences (P <0.05) in the hatching percentage and in deformity percentage between 4, 6, and 8 ppt. Rate of yolk absorption was significantly faster in the control and 2 ppt salt treatments, but slower in 4, 6, and 8 ppt. Rate of increase in length was slower with increasing salinity. The optimum salinity for African catfish eggs and was between 0-2 ppt and acceptable up to 6 ppt. The results suggest that increasing salinity delayed hatching and development of African catfish eggs and larvae, respectively, as well as increased the deformity of the larvae.     

Surface disinfection of Pacific threadfin, Polydactylus sexfilis, and amberjack, Seriola rivoliana, eggs

The effects of exposing the eggs of Pacific threadfin and amberjack eggs (AEs) to different concentrations of hydrogen peroxide for 5 min on hatch rate and survival were assessed in a series of experiments using a petri dish model rearing system. Despite significant inter‐batch variation in hatch rate, it was shown that eggs of both species could be safely exposed to up to 11 340 mg L⁻¹ H₂O₂ for 5 min. Exposure to 34 230 mg L⁻¹ H₂O₂ for 5 min was shown to be lethal to AEs at a late stage of development. In two further experiments, it was demonstrated that Pacific threadfin eggs were resistant to all tested concentrations of a range of polyvinylpyrrolidone iodine (PVP‐I) concentrations and contact times (up to 1000 mg L⁻¹ PVP‐I for 10 min). The level of bacteria adhering to the eggs of both species was highly variable. Where eggs were heavily colonized (>10⁴ cfu egg⁻¹), hydrogen peroxide concentrations of at least 11 340 mg L⁻¹, or PVP‐I concentrations higher than 500 mg L⁻¹ for 10 min, were required for effective sterilization. In less colonized batches, rinsing in sterile seawater or exposure to lower (550 mg L⁻¹) concentrations of H₂O₂ was sufficient to result in high apparent levels of surface sterility (<1 cfu egg⁻¹).