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1.
任炳忠  赵卓  郝锡联 《昆虫学报》2002,45(Z1):20-21
 记述了采自松嫩草原的雏蝗属Chorthippus Fieber一新种, 即吉林雏蝗Chorthippus jilinensis sp. Nov.,并与其近似种翠饰雏蝗C.dichrous (Ev.)做了比较。模式标本保存于东北师范大学生命科学学院动物标本室。  相似文献   

2.
湖北省蝗总科(直翅目,网翅蝗科,斑腿蝗科)二新种   总被引:1,自引:1,他引:0  
记述了分属于蝗总科雏蝗属和直斑腿蝗属的两新种,即天堂雏蝗Chorthippus tiantangensis sp.nov、和短翅直斑腿蝗Stenocatantops brevipennis sp.nov..正模标本保存在湖北黄冈师范学院生物系,副模标本分别保存在陕西师范大学动物学研究所和湖北黄冈师范学院生物系.  相似文献   

3.
记述了采自松嫩草原的雏蝗属Chorthippus Fieber一新种,即吉林雏蝗Chorthippus jilinensis sp. Nov.,并与其近似种翠饰雏蝗C.dichrous (Ev.)做了比较。模式标本保存于东北师范大学生命科学学院动物标本室。  相似文献   

4.
东北大兴安岭雏蝗属二新种:(直翅目:网翅蝗科)   总被引:1,自引:0,他引:1  
本文记述了在内蒙古大兴安岭采到的雏蝗属2新种:黑背雏蝗Chorthippusatridorsus,sp.nov.和红翅雏蝗Chorthippus rufipennis,sp.nov.,模式标本保存于中山大学昆虫学研究所标本室。  相似文献   

5.
记述采自新疆北部网翅蝗科雏蝗属Chorthippus 1新种,即布尔津雏蝗Chorthippus buerjinensisi sp.nov.模式标本保存于陕西师范大学动物研究所标本室.  相似文献   

6.
本文报道直翅目网翅蝗科雏蝗属二新种,即代县雏蝗及宁武雏蝗模式标本保存于山西省农牧厅植保植检总站。  相似文献   

7.
本文记述了雏蝗属一新种:短角雏蝗(Chorthippusbrevicornissp.nov.,采自甘肃省肃南县宝瓶河牧场。模式标本存于陕西师范大学动物研究所。  相似文献   

8.
记述采自黑龙江省大小兴安岭地区雏蝗属2新种,即乌裕尔河雏蝗Chorthippus wuyuerhensis,sp.nov.,拟曲脉雏蝗Chorthippus flexivenoides,sp.nov.。模式标本保存于陕西师范大学动物研究所昆虫标本室。  相似文献   

9.
本文记述采自青海省雏蝗属1新种:宽沟雏蝗Chorthippus latisulcus,sp.nov。模式标本保存于陕西师范大学动物研究所。  相似文献   

10.
记述了采自河北省小五台山的雏蝗属短翅亚属1新种,河北雏蝗 Chorthippus(Altichorthippus)hebeiensis sp.nov.,模式标本保存于河北大学生命科学学院.  相似文献   

11.
A review of studies on Pichavaram mangrove, southeast India   总被引:6,自引:0,他引:6  
K. Kathiresan 《Hydrobiologia》2000,430(1-3):185-205
We studied a tropical mangrove ecosystem, situated at Pichavaram, southeast India. We found 13 species of mangrove trees, with Avicennia marinaand Rhizophora species predominant, besides 73 spp. of other plants, 52 spp. of bacteria, 23 spp. of fungi, 82 spp. of phytoplankton, 22 spp. of seaweeds, 3 spp. of seagrass, 95 spp. of zooplankton, 40 spp. of meiobenthos, 52 spp. of macrobenthos, 177 spp. of fish and 200 spp. of birds. The bacteria performed activities like photosynthesis, methanogenesis, magnetic behaviour, human pathogens and production of antibiotics and enzymes (arysulphatase, L-glutaminase, chitinase, L-asparaginase, cellulase, protease, phosphatase). The microzooplankton included tintinnids, rotifers, nauplius stages of copepods and veliger larvae of molluscs, with a predominance of tintinnids. Tintinopsis spp. alone accounted for 90% of abundance. The macrozooplankton consisted of 95% of copepods and coelenterates. The meiofauna was rich with nematodes (50–70% of the component), followed by foramifera. The macrofauna included polychaetes, bivalves, gastropods, tanaids, isopods, amphipods, cirripedes, crabs, hermit crabs and shrimps. The mangrove harboured a large number of juvenile fishes, especially during summer and post-monsoon. The water was fertile and productive in having several fold-higher levels of nutrients, microbes, plankton and other biological resources, than the adjoining estuarine, backwater and neritic environments. The gross primary production was 8 g cm-3 d-1; about 21% of which was contributed by phytoplankton of 5–10 m size. Unfortunately, 90% of the mangrove cover in the study area was degraded. Possible factors that cause degradation of the ecosystem are detailed and remedial measures suggested. Techniques for regeneration of the degraded areas are proposed.  相似文献   

12.
The reference ranges of the trace elements Al, As, Be, B, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Li, Rb, Se, Sr, and Zn were determined by inductively coupled plasma-mass spectrometry (ICP-MS) in sera of a group of free-ranging plains viscachas of the pampa grasslands of Argentina. The values were compared with those of a small group of captive plains viscachas of the Zurich Zoo with diabetes and bilateral cataracts. In addition, a method for digestion of whole-blood samples is described for the trace element determination. Significant differences in the concentration of trace elements in the two groups of animals are discussed. No correlation was found between the levels of selenium and of other trace elements compared to the formation of cataracts.  相似文献   

13.
The phylogeny of groups within Gobioidei is examined with molecular sequence data. Gobioidei is a speciose, morphologically diverse group of teleost fishes, most of which are small, benthic, and marine. Efforts to hypothesize relationships among the gobioid groups have been hampered by the prevalence of reductive evolution among goby species; such reduction can make identification of informative morphological characters particularly difficult. Gobies have been variously grouped into two to nine families, several with included subfamilies, but most existing taxonomies are not phylogenetic and few cladistic hypotheses of relationships among goby groups have been advanced. In this study, representatives of eight of the nine gobioid familes (Eleotridae, Odontobutidae, Xenisthmidae, Gobiidae, Kraemeriidae, Schindleriidae, Microdesmidae, and Ptereleotridae), selected to sample broadly from the range of goby diversity, were examined. Complete sequence from the mitochondrial ND1, ND2, and COI genes (3573 bp) was used in a cladistic parsimony analysis to hypothesize relationships among the gobioid groups. A single most parsimonious topology was obtained, with decay indices indicating strong support for most nodes. Major phylogenetic conclusions include that Xenisthmidae is part of Eleotridae, and Eleotridae is paraphyletic with respect to a clade composed of Gobiidae, Microdesmidae, Ptereleotridae, Kraemeriidae, and Schindleriidae. Within this five-family clade, two clades are recovered. One includes Gobionellinae, which is paraphyletic with respect to Kraemeriidae, Sicydiinae, Oxudercinae, and Amblyopinae. The other contains Gobiinae, also paraphyletic, and including Microdesmidae, Ptereleotridae, and Schindleriidae. Previous morphological evidence for goby groupings is discussed; the phylogenetic hypothesis indicates that the morphological reduction observed in many goby species has been derived several times independently.  相似文献   

14.
Background and Aims A significant number of species assigned to the Neotropical orchid sub-tribe Oncidiinae reward insect pollinators with oil produced in floral glands termed elaiophores. The latter may be glabrous (epithelial elaiophores) or hirsute (trichomal elaiophores). Although the detailed anatomy and ultrastructure of epithelial elaiophores have been studied for a number of genera, such as Oncidium Sw., Gomesa R. Br. and Trichocentrum Poepp. & Endl., hitherto, trichomal elaiophores have been investigated only for a single species of Oncidiinae, Ornithocephalus ciliatus Lindl. Furthermore, this is the only representative of the Ornithocephalus clade to be investigated to date. Here, an examination is made of the elaiophore anatomy and ultrastructure of a further four species currently assigned to this clade (Ornithocephalus gladiatus Hook., Phymatidium falcifolium Lindl., Zygostates grandiflora (Lindl.) Mansf. and Zygostates lunata Lindl.) and the results compared with those obtained for other Oncidiinae. Methods Elaiophore structure was examined for all species at three stages of flower development: closed bud, first day of anthesis and final stage of anthesis, using light microscopy, fluorescence microscopy, scanning electron microscopy, transmission electron microscopy and histochemistry. Key Results Elaiophores of O. gladiatus occur upon the lateral lobes of the labellum and display characters intermediate between those of typical epithelial and trichomal elaiophores, in that they are largely glabrous, consisting mainly of cuboidal epidermal cells, but bear short, unicellular hairs proximally. By contrast, the elaiophores of all the other species investigated occur on the callus and are of the trichomal type. In P. falcifolium, these unicellular hairs are capitate. In all species, oil secretion commenced at the closed floral bud stage. Ultrastructurally, the mainly trichomal elaiophores of the four representatives of the Ornithocephalus clade closely resembled the epithelial elaiophores of other Oncidiinae, in that their cells displayed an organelle complement typical of lipid-secreting cells. However, in some taxa, a number of noteworthy characters were present. For example, the elaiophore cuticle of O. gladiatus and P. falcifolium was bi-layered, the outer layer being lamellate, the inner reticulate. The cuticle of Z. grandiflora and Z. lunata was also lamellate, but here, a reticulate layer was absent. Accumulation of secreted oil resulted in the localized distension of the cuticle. Cuticular cracks and pores, however, were absent from all species. The walls of the secretory cells of Z. grandiflora were also atypical in that they had short protuberances or ingrowths, and contained cavities which are thought to be involved in the secretory process. Conclusions Of the species investigated, most displayed similar anatomical organization, their trichomal elaiophores occurring on the labellar callus. They, thus, differ from many other members of the Oncidiinae, where epithelial elaiophores are found either on the callus, or on the lateral lobes of the labellum. However, ultrastructurally, all elaiophores, whether those of representatives of the Ornithocephalus clade, or those of other oil-secreting Oncidiinae, possessed a similar complement of organelles, regardless of whether the elaiophores were trichomal or epithelial. In view of the latter, and the similar chemical composition of oils derived from all Oncidiinae investigated to date, it is probable that position and type of elaiophore, and possibly the structure of the overlying cuticle, play an important role in pollinator selection in these oil-secreting orchids.  相似文献   

15.
16.
The present study was performed to investigate the infection status with helminth in a group of feral cats in Korea. More than 29 helminth species including adults or eggs were detected in visceral and fecal samples of the examined cats. Among these were a host of nematodes, including toxocarids, Ancylostoma sp. and the larva of Anisakis simplex; trematodes, including Clonorchis sinensis, Paragonimus westermani, Eurytrema pancreaticum, Pharyngostomum cordatum, Metagonimus spp., Heterophyes nocens, Pygidiopsis summa, Heterophyopsis continua, Stictodora fuscata, Stictodora lari, Acanthotrema felis, Stellantchasmus falcatus, Centrocestus armatus, Procerovum varium, Cryptocotyle sp., Echinostoma revolutum, Echinostoma hortense, Echinochasmus japonicus, Stephanoprora sp., Plagiorchis muris, Neodiplostomum sp. and diplostomulum. We also detected a variety of cestodes, including Spirometra erinacei, Taenia taeniaeformis and unidentified species of tapeworm. We also found examples of the acanthocephalan, Bolbosoma sp. In our assessment of the stools, we detected at least 12 species of helminth eggs. These findings confirmed that feral cats in Korea are infected with a variety of helminth parasite species. Furthermore, among the helminths detected, E. pancreaticum, S. fuscata, S. lari, A. felis, S. falcatus, C. armatus, P. varium, Cryptocotyle sp., E. revolutum, E. japonicus, Stephanoprora sp., P. muris, Neodiplostomum sp. and Bolbosoma sp. represent helminth fauna which have not been reported previously in feral cats in the Republic of Korea.  相似文献   

17.
本文对代表豆科云实亚科紫荆族全部五个属.即紫荆属、腺叶紫荆属、格里芬豆属、拟羊蹄甲属和羊蹄甲属的几乎全部系或亚组的134个种或种下分类单元的叶脉序进行了研究,并描述了本族20个基本脉序类型.在紫荆族中,腺叶紫荆属和拟羊蹄甲属的脉序式样非常相似;紫荆属的种类的脉式样以全绿叶,一级脉不及绿等特征组合有别于本族其它属;格里芬豆属的脉序高度特化,有别于紫荆亚族的所有类群;羊蹄甲属是叶脉序式样最多样化的类群.在羊蹄甲属中,羊蹄甲亚属和显托亚属的脉序式样非常多样化.Elayuna亚属的两个组和Barklya亚属的脉序式样非常相似.Barklya亚属的仅有种了香叶羊蹄甲的脉序仅以其叶全缘区别于Elayuna亚属.脉序性状支持把Cansenia系、白花羊蹄甲系、羊蹄甲系、绿花羊蹄甲亚组、总状花羊蹄甲亚组、Elayuna亚属、伞房系、Chloroxanthae系、棒花系、掌叶组和萼管组等作为自然类群的观点.在本族植物的脉序类型中,一级脉及缘、全缘叶、发育完好的脉岛等性状常相关出现;另一方面,一级脉不及缘,具二小叶或叶深裂,脉岛发育不完善及盲脉多分枝等性状常相关出现.如同形态和花粉性状,脉序性状能为紫荆族的分类提供另一方面的佐  相似文献   

18.
19.
This study surveys the external morphology of the mouthparts in the guild of spore‐feeders among the coleopterous superfamily Staphylinoidea, evaluating the influence of different phylogenetic and ecological starting points on the formation of their mouthparts. Our emphasis is on a scanning electron microscope analysis (SEM) of the involved trophic structures in spore‐feeding larvae and adults of the Ptiliidae, Leiodidae and Staphylinidae, describing the fine structure of their main functional elements. Functionally, mouthpart structures resemble brushes, brooms, combs, rakes, rasps, excavators, knives, thorns, cram‐brushes, bristle troughs, blocks and differently structured grinding surfaces. Their different involvement in the various aspects of the feeding process (i.e. food gathering, transporting, channelling and grinding) is deduced from our SEM analyses plus direct video observations. We infer five different patterns of food transport and processing, discriminating adults of ptiliids, leiodids plus staphylinids (excluding some aleocharines), several aleocharine staphylinids, and the larvae of leiodids and staphylinids. The structural diversity of the mouthparts increases in the order from (1) Ptiliidae, (2) Leiodidae towards (3) Staphylinidae, reflecting the increasing systematic and ecological diversity of these groups. Comparisons with non‐spore‐feeders show that among major lineages of staphylinoids, shifts from general microphagy to sporophagy are not necessarily constrained by, nor strongly reflected in, mouthpart morphology. Nevertheless, in several of these lineages the organs of food intake and grinding have experienced particular fine‐structural modifications, which have undergone convergent evolution, probably in response to specialized mycophagy such as spore‐feeding. These modifications involve advanced galeal rakes, galeal or lacinial ‘spore brushes’ with arrays of stout bristles, reinforced obliquely ventrad orientated prosthecal lobes and the differentiations of the molar grinding surfaces into stout teeth or tubercles. In addition, several staphylinids of the tachyporine and oxyteline groups with reduced mandibular molae have evolved secondary trituration surfaces, which in some aleocharines are paralleled by considerable re‐constructions of the labium–hypopharynx.  相似文献   

20.
Most of the estimated 70–80 species of New Zealand Gnaphalieae are endemic. Those of Anaphalioides , Ewartia , Helichrysum , Leucogenes , Rachelia and Raoulia belong to a putatively monophyletic group which is supported by analysis of nuclear ITS DNA sequences and is virtually confined to New Zealand. All species of Craspedia , Euchiton , Ozothamnus and Pseudognaphalium are excluded from this group. A phylogenetic analysis of 42 species of Gnaphalieae, using 57 morphological, anatomical and palynological characters, was conducted to test the monophyly of this group and to seek evidence of generic relationships. The analysis does not resolve basal relationships among the Gnaphalieae studied here. The putative monophyletic New Zealand group is not retrieved. Monophyly is supported for each of Euchiton , Leucogenes , the whipcord species of Helichrysum , the pulvinate species of Raoulia , and Raoulia subg. Raoulia (excluding the aberrant R. cinerea ), but not for Anaphalioides or Raoulia s.l. There are these two distinct groups in Raoulia s.l. but also a substantial number of isolated species. The sole New Zealand species of Ewartia is not a sister species to Australian Ewartia . The Australian species Ewartia planchonii is the sister species to Euchiton rather than to the other Australian species of Ewartia .  © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society , 2003, 141 , 183–203.  相似文献   

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