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1.
Understanding the pattern of connectivity among populations is crucial for the development of realistic and spatially explicit population models in marine systems. Here we analysed variation at eight microsatellite loci to assess the genetic structure and to infer patterns of larval dispersal for a brooding coral, Seriatopora hystrix, at an isolated system of reefs in northern Western Australia. Spatial autocorrelation analyses show that populations are locally subdivided, and that the majority of larvae recruit to within 100 m of their natal colony. Further, a combination of F- and R- statistics showed significant differentiation at larger spatial scales (2-60 km) between sites, and this pattern was clearly not associated with distance. However, Bayesian analysis demonstrated that recruitment has been supplemented by less frequent but recent input of larvae from outside the local area; 2-6% of colonies were excluded from the site at which they were sampled. Individual assignments of these migrants to the most likely populations suggest that the majority of migrants were produced at the only site that was not decimated by a recent and catastrophic coral bleaching event. Furthermore, the only site that recovered to prebleaching levels received most of these immigrants. We conclude that the genetic structure of this brooding coral reflects its highly opportunistic life history, in which prolific, philopatric recruitment is occasionally supplemented by exogenously produced larvae. 相似文献
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Several species of the family Petraliellidae were first described from the coast of Queensland, including the type species of Sinupetraliella, S. litoralis. These species are redescribed from type, or topotype specimens, and include Petraliella concinna, which has not been certainly found since its introduction in 1891; lectotype material is designated for P. buski and P. magna. Six other species are described from Queensland, P. crassocirca, P. dentilabris, P. dorsiporosa, Mucropetraliella bennetti, M. serrata and M. tuberosa. The species Mucropetraliella tuberosa is a new addition to the Queensland fauna and is described and illustrated here for the first time since its introduction in 1884. The characters of the family Petraliellidae are briefly discussed and the genera to which the Queensland species are assigned is reviewed. A taxonomic key to the ten Queensland petraliellid species described is also provided. 相似文献
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Abstract The hyperparasitoids reared from three species of primary parasitoids of the gum leaf skeletoniser, Uraba lugens Walker (Lepidoptera: Nolidae) collected in South Australia and Tasmania are recorded and discussed. Seven hyperparasitoids were reared. Diatora sp. and ? Paraphylax sp. (Ichneumonidae: Cryptinae); Tetrastichus sp. (Chalcidoidea: Eulophidae); Megadicylus dubius (Girault) (Chalcidoidea: Pteromalidae) and Elasmus sp. (Chalcidoidea: Eulophidae) were reared from Cotesia urabae Austin and Allen (Braconidae: Microgastrinae). Megadicylus dubius , Elasmus sp. and Anastatus sp. (Chalcidoidea: Eupelmidae) were reared from Dolichogenidea eucalypti Austin and Allen (Braconidae: Microgastrinae). Pediobius bruchicida (Rondani) (Chalcidoidea: Eulophidae) was reared from Euplectrus sp. (Chalcidoidea: Eulophidae). This appears to be the first record of the cryptine ichneumonid genus Diatora Förster from Australia. Of the seven hyperparasitoid species reared, only one ( P. bruchicida ) is known to be present in New Zealand. Implications for the selection of a biological control agent for U. lugens in New Zealand are discussed. Some prior misidentifications of associated hyperparasitoids are noted. 相似文献
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C. B. Wakefield G. I. Moore A. E. Bertram M. Snow S. J. Newman 《Journal of fish biology》2016,88(2):735-740
The capture of a rarely encountered Randall's snapper Randallichthys filamentosus (female, 587 mm fork length) from the upper continental slope (c. 350 m) off the south coast of Western Australia (c. 34·5° S; 122·5° E) in January 2014 represents its first record from the temperate Indian Ocean and a southern range extension. This record suggests that spawning of this predominantly tropical species may probably be occurring in the eastern Indian Ocean, considering the extensive, and unlikely, distance the progeny would have otherwise travelled from its typical distribution in the western and central Pacific Ocean. 相似文献
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As a result of climate change, sea-water temperatures around the world are expected to increase, potentially causing more frequent and severe episodes of coral bleaching. In this study, the impact of elevated water temperatures at an isolated system of reefs was assessed by quantifying the changes in benthic communities over almost 10 years. Mass-coral bleaching in 1998 dramatically altered the community structure of the reefs, including a >80% relative decrease in the cover of hard and soft corals and a twofold increase in the cover of algae, but which did not include macroalgae. The magnitude of the impact varied among the different sites according to their initial cover and community structure, largely due to the differing susceptibilities of the dominant groups of hard corals. Subsequent increase in the cover of these groups varied according to their life history traits, such as modes of reproduction and rates of growth. Additionally, the increase in cover was strongly correlated with the magnitude of the impact at the different sites, suggesting that recovery was driven by processes acting over local scales. Six years after the bleaching, the hard corals had returned to approximately 40% of their pre-bleaching cover, but there was little change in the cover of soft corals, and the structure of most hard coral communities remained very different to that prior to the bleaching. These data provides insights into the degree to which coral communities are resilient to catastrophic disturbances, when they are isolated from other reef systems but not exposed to some of the chronic stressors affecting many reefs around the world. 相似文献
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Coralline algae from a drill core in Ribbon Reef 5 have been used to interpret changes in the depositional palaeoenvironments in the northern Australian Great Barrier Reef over the last 790 ka. Three main coralline algal assemblages, each dominated by members of a particular subfamily, have been distinguished by quantitative analysis: (1) mastophoroid assemblages, usually occurring as crusts on corals, are typical of the shallowest reef settings; (2) lithophylloid assemblages within algal nodules may represent shallow-water, cooler environments or deeper reef subenvironments; and (3) melobesioid assemblages are characteristic of deeper-water platform areas. The algal assemblages between 96 and 210 m b.s.f. (metre below sea floor) record a fluctuating but progressive shallowing-upwards from deep, outer-platform to shallower, non-reefal depositional environments. Two intervening episodes dominated by mastophoroids represent two phases of reef growth. The section above 96 m b.s.f. comprises several stacked reefs in which mastophoroid crusts similar to the present-day shallow-water assemblages predominate.Electronic Supplementary Material Supplementary material is available for this article at .Communicated by: Geological Editor P.K. Swart 相似文献
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Ryan J. Nevatte Barbara E. Wueringer Michael R. Gillings Jane E. Williamson 《Journal of fish biology》2019,95(5):1342-1345
In 2011, a male pristiophorid was caught by a prawn trawler north east of Cape Moreton, Queensland, Australia. Molecular analyses confirmed the specimen to be the common sawshark Pristiophorus cirratus. Historical catch data indicate the occurrence of the species in the region but this is the first verified record of P. cirratus occurring in the waters of southern Queensland. Together, these records extend the recognised northern limit of P. cirratus by c. 500 km, which suggests that further investigation of its distribution is warranted. 相似文献
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本文报道了采自云南的1个中国种子植物新记录科、2个新记录属、30个新记录种(含种下等级, 下同)。中国新记录科为兜帽果科(Aptandraceae) (云南迦楼果Anacolosa griffithii); 中国新记录属为假钓樟属(Pottingeria) (假钓樟P. acuminata)和心萼藤属(Cordisepalum) (小花心萼藤C. phalanthopetalum); 中国新记录种为: 短萼火焰花(Phlogacanthus gomezii)、滇缅叉柱花(Staurogyne shanica)、大果大风子(Hydnocarpus macrocarpus)、厚叶藤春(Alphonsea ventricosa)、长果细基丸(Huberantha jenkinsii)、盈江野独活(Miliusa chantaburiana)、异株野独活(M. dioeca)、滇缅凤仙花(Impatiens andersonii)、红萼藤黄(Garcinia lanceifolia)、盈江五桠果(Dillenia parviflora)、盈江柳安(Parashorea buchananii)、缅甸锥(Castanopsis birmanica)、缅甸银叶树(Heritiera burmensis)、红花柊叶(Phrynium pubinerve)、滇印石豆兰(Bulbophyllum obrienianum)、易武石豆兰(B. sinhoense)、盈江石斛(Dendrobium dantaniense)、舌唇石斛(D. parcum)、黄火烧兰(Epipactis flava)、大茎美冠兰(Eulophia macrobulbon)、滇印小囊兰(Micropera mannii)、婆罗洲香荚兰(Vanilla borneensis)、簇花叶下珠(Phyllanthus discofractus)、奇异珠子木(P. mirabilis)、微毛杜茎山(Maesa tomentella)、皱叶清风藤(Sabia wardii)、大萼臭椿(Ailanthus integrifolia subsp. calycina)、滇缅荛花(Wikstroemia floribunda)、红丝姜花(Hedychium gardnerianum)、大苞姜(Monolophus linearis)。凭证标本存放于中国科学院西双版纳热带植物园标本馆(HITBC)、中国科学院植物研究所标本馆(PE)、中国科学院昆明植物研究所标本馆(KUN)和厦门大学标本馆(AU)。 相似文献
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本文记述北部湾蟹类中的1新种及3新记录:Philyra adamsi Bell. 1855, Achacus lacertosus Stimpson, 1857, Xenocarcinas longicornis sp. nov., Neoxanthops lineatus(A. Milne-Edwards, 1867) 相似文献
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通过野外调查和标本鉴定,报道了河南被子植物分布新记录3种,分别为单花红丝线〔Lycianthes lysimachioides （Wall.） Bitter〕、狭齿水苏（Stachys pseudophlomis C. Y. Wu）、白花蝇子草〔Silene latifolia subsp. alba （Mill.） Greuter & Burdet〕。单花红丝线所在的红丝线属〔Lycianthes （Dunal） Hassl.〕为河南省分布新记录属。上述新记录的凭证标本存放于河南宝天曼保护区标本室。 相似文献
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Yuri M. Marusik Ahmad Nadimi Mikhail M. Omelko Seppo Koponen 《Zoology in the Middle East.》2013,59(3):255-266
This paper reports seven species found in Shirabad Cave located in the western part of Golestan Province and two species found nearby. Three families: Anyphaenidae, Segestriidae and Theridiosomatidae, and one species, Metellina merianae (Scopoli, 1763) are recorded from Iran for the first time. Two species are described as new: Tegenaria zamanii Marusik & Omelko, sp.n. (♀) and Segestria mirshamsii Marusik & Omelko, sp.n. (♀). Four species: Lepthyphantes iranicus Saaristo & Tanasevitch, 1996, Metellina merianae, Octonoba yesoensis (Saito, 1934) and Pholcus sp. are illustrated. Uloborus georgicus Mcheidze, 1997 from Eastern Georgia is synonymized with Octonoba yesoensis. The distribution of all species treated in the paper is briefly discussed, with emphasis on the easternmost records.http://www.zoobank.org/urn:lsid:zoobank.org:pub:614A0FF0-40B0-4A7E-B2B8-C6B117A80AFE 相似文献
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中国海南内生拟盘多毛孢 总被引：1，自引：0，他引：1
2004 至 2005 年期间,从我国海南地区 95 种植物中分离鉴定了 43 种内生拟盘多毛孢,包括 5 个新组合,16 个内生拟盘多毛孢新记录种。5 个原归在盘多毛孢属 Pestalotia 的种重组到拟盘多毛孢属Pestalotiopsis 中,它们是二色拟盘多毛孢 P. bicolor,金鸡纳树拟盘多毛孢 P. cinchonae,密花拟盘多毛孢P. lambertiae,草原拟盘多毛孢 P. pampeana 和露兜树拟盘多毛孢 P. pandani。对 5 个新组合进行了重新描述和图解,其它 16 个内生拟盘多毛孢新记录种列出名录。 相似文献
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A new genus and three new species of blood flukes (Aporocotylidae) are described from squirrelfishes (Holocentridae) from the Great Barrier Reef. Holocentricola rufus n. gen.,n. sp. is described from Sargocentron rubrum (Forsskål),from off Heron Island,southern Great Barrier Reef,and Lizard Island,northern Great Barrier Reef,Australia. Holocentricola exilis n. sp. and Holocentricola coronatus n. sp. are described from off Lizard Island,H. exilis from Neoniphon sammara (Forsskål) and H. coronatus from Sargocentron diadema (Lacepède). Species of the new genus are distinct from those of all other aporocotylid genera in having a retort-shaped cirrus-sac with a distinct thickening at a marginal male genital pore. The new genus is further distinct in the combination of a lanceolate body,X-shaped caeca,posterior caeca that are longer than anterior caeca,a single,post-caecal testis that is not deeply lobed,a post-caecal,post-testis ovary that is not distinctly bi-lobed,and a post-ovarian uterus. The three new species can be morphologically delineated based on the size and row structure of the marginal spines,as well by total length,oesophagus and caecal lengths,and the position of the male genital pore,testes and ovary relative to the posterior extremity. The three species of Holocentricola are genetically distinct from each other based on cox 1 mtDNA and ITS2 rDNA data,and in phylogenetic analyses of 28S rDNA form a well-supported clade sister to species of Neoparacardicola Yamaguti,1970. This is the first report of aporocotylids from fishes of the family Holocentridae and the order Holocentriformes. 相似文献
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通过最近的整理,澜沧江共有沙鳅属鱼类3种,它们是斑鳍沙鳅Botia beaufortiSmith、中华沙鳅B.superciliaris Gnther、黑线沙鳅(新种)B.nigrolineata.黑线沙鳅为新种,鉴别特征是沿背中和体侧有显著的黑色纵条,起自头后止于尾鳍基。首次提出云南沙鳅Botia yunnanensis Chen可能是斑鳍沙鳅的次异名,中华沙鳅是在澜沧江的首次纪录。在附录中记录了突吻沙鳅B.rostrata Gnther,是国内首次纪录,也是萨尔温江和伊洛瓦底江水系的首次纪录。文中每个种均有插图,对新种作了详细的描述,对老种的有关名称作了(林厂里)订或讨论。 相似文献
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本文报道朱传典采自四川省和吉林省的隙蛛属(Coelotes)蜘蛛四新种和一新纪录种:三重隙蛛,新种C.trifasaiatussp.nov.;杯状隙蛛,新种C.tryblionatussp.nov.;龙骨隙蛛,新种C.tropidosatussp.nov.;螺形隙蛛,新种C.gyriniformissp.nov.和游荡隙蛛C.erraticusNishikawa,1983。 相似文献