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Genetic population structure of red snapper(Lutjanus malabaricus)and orange-spotted grouper(Epinephelus coiodes)in Brunei and Sabah

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Integrative Zoology 2008年第3期3卷 208-215页

作者： Zohrah H.SULAIMAN Khadijah H.ABDUL RAHMAN Teo Y.YING Hussein H.TAHA NurQistina H.MUHD TAHA Department of Biology Faculty of ScienceUniversity Brunei DarussalamJalan Tungku LinkGadongBrunei Darussalam

The genetic population structure of red snapper Lutjanus malabaricus and orange-spotted grouper Epinepheluscoiodes in Brunei and Sabah was investigated using allozyme electrophoresis. Samples were collected from threesites in Brunei for E. coiodes and from three sites in Brunei and Sabah for L. malabaricus. A total of 22 loci and 16loci were scored, respectively. The index of fixation (FST) for the E. coiodes population was 0.176 but, in general, itlacked within-population structuring. The FST was particularly high between Brunei Bay/Jerudong and Brunei Bay/Kuala Belait, suggesting genetic subdivision on a small spatial scale. Isolation of Brunei Bay from the South ChinaSea may constrain the movement of adult fishes and larval dispersal, thereby reducing homogeneity amongsubpopulations. All variable loci for E. coiodes were in Hardy–Weinberg equilibrium except for MDH* and GTDHP*(P snapper and grouper resources inBrunei waters must take into account the presence of a single stock and two stocks, respectively.

关键词： allozymes fishery resource genetic structure of fish grouper snapper

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Effects of temperature and diet on length-weight relationship and condition factor of the juvenile Malabar blood snapper(Lutjanus malabaricus Bloch & Schneider, 1801)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2016年第8期17卷 580-590页

作者： Sabuj Kanti MAZUMDER Simon Kumar DAS Yosni BAKAR Mazlan Abd.GHAFFAR School of Environmental and Natural Resource Sciences Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia Marine Ecosystem Research Center Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia School of Fisheries and Aquaculture Sciences Universiti Malaysia Terengganu

In this study we aimed to analyze the effects of water temperature and diet on the length-weight rela- tionship and condition of juvenile Malabar blood snapper Lutjanus malabaricus over a 30-d experimental period. The experiment was conducted in the laboratory using a flow-through-sea-water system. The fish were subjected to four different temperatures （22, 26, 30, and 34 ℃） and two diets （commercial pellet and natural shrimp）. Fish were fed twice daily. L. malabancus exhibited negative allometric growth （b〈3） at the beginning of the experiment （Day 0） at all temperatures and both diets except for 22 ℃ fed with shrimp, which showed isometric growth （b=3）. Conversely, at the end of the experiment （Day 30） fish showed isometric growth （b=3） at 30 ℃ fed with the pellet diet, indicating that the shape of the fish did not change with increasing weight and length, and a positive allometric growth （b〉3） at 30 ℃ fed with shrimp diet, which indicated that fish weight increases faster than their length. The rest of the temperatures represented negative allometric growth （b〈3） on both diet, meaning that fish became lighter with increasing size. The condition factors in the initial and final measurements were greater than 1, indicating the state of health of the fish, except for those fed on a pellet diet at 34 ℃. However, the best condition was obtained at 30 ℃ on both diets. Nev- ertheless, diets did not have a significant effect on growth and condition of juvenile L. malabaricus. The data obtained from this study suggested culturing L. malabaricus at 30 ℃ and feeding on the pellet or shrimp diet, which will optimize the overall production and condition of this commercially important fish species.

关键词： Length-weight relationship Condition factor Temperature Growth Aquaculture snapper

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snapper—自行接合式机械变速箱的设计与研究

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世界汽车 1981年第2期 23-32+7页

作者： Edward J.Bogema 刘继成

目前,这种按新的概念设计的 snapper 变速箱正处生产的初期阶段。这种变速箱的独到之处在于它的自行接合特性。这一特性使其换挡方便同时也杜绝了因司机操作错误所带来的种种弊病。这种变速箱能满足自动变速箱通常所考虑的某些要求。在1... 详细信息

目前,这种按新的概念设计的 snapper 变速箱正处生产的初期阶段。这种变速箱的独到之处在于它的自行接合特性。这一特性使其换挡方便同时也杜绝了因司机操作错误所带来的种种弊病。这种变速箱能满足自动变速箱通常所考虑的某些要求。在1961年曾出现了具有浮动主轴齿轮的组合式“公路范围”双中间轴变速箱。snapper 变

关键词：自动变速箱主轴档位公路传动轴变速箱齿轮 snapper 接合器发动机转速传动机构齿轮机构分速箱锁止元件

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E-mail软件——｛随身邮差｝

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通信技术 2004年第3期37卷 98-99页

作者：肖素弟

经常要通过手机或掌上电脑来查收电子邮件的"移动一族",特别需要为自己选一款智能的邮件接收软件,因为它可以让你既省时、省心,又省钱。

关键词：手机软件电子邮件软件工具 Apollo Mail Active Mail snapper Mail Pocket Spamfilter

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