Ultrastructure of the egg shell of the acanthocephalan Neoechinorhynchus crassus

In the acanthocephalan Neoechinorhynchus crassus five embryonic envelopes have been identified, including four, which are similar to those in previously studied acanthocephalans and a supplementary one, located between the outer and the second envelopes, which is characteristic of only a few Eoacanthocephala. The terminology of the envelopes in relation to their origin and possible function is discussed.     

Reproductive traits of the acanthocephalan Neoechinorhynchus brentnickoli in the definitive host

The Acanthocephala constitute a group of helminth parasites that, as adults, infect all classes of vertebrates. Adults of Neoechinorhynchus brentnickoli are parasites of Dormitator latifrons, a commercially important fish species in Tres Palos Lagoon, Guerrero, Mexico. The aim of this study was to describe features of the reproductive biology of this acanthocephalan. Fish were collected from Laguna de Tres Palos during February 2012 to February 2013. The number of fish that were examined (n=688) ranged from 35 (June) to 70 (August) in each collection. The prevalence of infection was more than 90% during this period and mean abundance varied significantly from 32.3 worms per fish (July 2012) to 89.3 worms per fish (March 2012). Acanthocephalans were reproductively active during the whole year. The stomach was the region of the digestive tract with the smallest percentage of helminths, and females were more abundant than males in all sections of the intestine. Larger male and female worms were always located in the more posterior sections of the digestive tract. The mean length at which 50% of individuals reached sexual maturity was 2.9 mm for females and 2.3 mm for males. Relative fecundity increased with length in females.     

假尾孢属一新种

报道生于蓼属Polygonum sp.植物上的假尾孢属1个新种:余氏假尾孢Pseudocercospora yui Y.L.Guo.文中提供了新种的拉丁文简介、形态描述、绘图及讨论.模式标本保存在中国科学院微生物研究所菌物标本馆(HMAS).     

球束梗孢属一新种

描述了采自湖北省神农架的球束梗孢属一新种,神农架球束梗孢Gibellula shennongjiaensis,该菌分生孢子梗表面粗糙,瓶梗为棒状,5.4–10.8×1.1–2.2μm。分生孢子为圆柱形或纺锤形,透明,表面光滑,3.2–6.5×1.1–1.6μm。具糙梗孢式共无性型的产孢结构,其分生孢子梗由不规则的菌丝组成,产孢细胞不规则形状,分生孢子无色,光滑,线形,12.1–15.2×1.4–2.1μm。模式标本保存在贵州大学菌种保藏中心(GZAC-SNJ2012,主模式)。     

Three new species in the lichen genus Ionaspis

Ionaspis fuegensis, I. granvina and I. ventosa are described. The genus is recorded for the first time with certainty from the cool-temperate Southern Hemisphere. I. granvina differs from all other species in its carbonaceous black exciple and I. ventosa in its ecology: windswept mountain summits.     

寄螨属1新种和革索螨属1新种(蜱螨亚纲:中气门目:寄螨科)

记述寄螨属1新种:简单寄螨Parasitus simplendogynii sp.nov.和革索螨属1新种:泾源革索螨Gamasodes jingyuanensis sp.nov.     

木霉属2中国新记录种

[目的]明确我国南部地区土壤中分离得到的2株木霉菌的分类地位.[方法]采用PDAm培养基分离木霉菌菌株,通过形态学鉴定和内转录间隔区(ITS)序列、翻译延长因子1-alpha (Tef1-α)部分序列相似性分析对菌株进行初步鉴定;选取MEGA 4.0软件用Bootstrap最大简约法、水平3、重复1 000次来构建ITS、Tef1-α序列系统进化树并分析其亲缘关系.[结果]菌株CM01的ITS序列与GenBank基因库中Trichoderma intricatum strain GJS 02-78 ITS序列同源性高达99％,在ITS序列系统进化树中与模式菌株T.intricatum GJS 02-78、Trichoderma atroviride DAOM 179514亲缘关系最近;其Tef1-α序列与GenBank基因库中Hypocrea intricate strain GJS 02-78 Tef1-α序列同源性高达99％,在Tef1-α序列系统进化树中与模式菌株H.intricata GJS 02-78亲缘关系最近;其形态描述和模式菌株一致.菌株SCGA5003的ITS序列与GenBank基因库中Trichoderma stromaticum strain GJS 97-181 ITS序列同源性高达99％,在ITS序列系统进化树中与模式菌株T.stromaticum GJS 97-179、GJS 97-180、GJS 97-181、GJS 97-182、GJS 97-183亲缘关系最近;其Tef1-α序列与GenBank基因库中T.stromatieum strain GJS 97-183 Tef1-α序列同源性高达94％,在Tef1-α序列系统进化树中与模式菌株T.stromaticum CQSQ1032、GXNN7006亲缘关系最近;其形态描述和模式菌株一致.[结论]结合形态学特征与分子鉴定结果,判定菌株CM01为交织木霉(Trichoderma intricatum Samuels&Dodd/Hypocrea intricata Samuels et Dodd)、SCGA5003 为子座木霉(Trichoderma stromaticum Samuels & Pardo-Schulth/Hypocrea stromatica Bezerra,Costa & Bastos),即发现木霉属2个中国新记录种.     

Three new species of the genus Dactylospora in Spain

Three species of the genus Dactylospora, D. crassa Sarrión & Hafellner,D. mediterranea Sarrión & Hafellner, and D. pseudourceolata Sarrión & Hafellner are described as new from Spain. The morphology, anatomy, and ecology of the three taxa are discussed. A key to the SpanishDactylospora species is provided.     

Three new species of the genus Leveillula from Iran

 Based on molecular and morphological studies, Leveillula guilanensis sp. nov. on Chondrilla juncea, L. lactucae-serriolae sp. nov. on Lactuca serriola, and L. mindii sp. nov. on Mindium laevigatum are described from Iran. Received: May 7, 2002 / Accepted: September 5, 2002 Correspondence to:S. Takamatsu     

A new species of the genus Trematosphaeria from China

A new species of the genus Trematosphaeria was isolated and identified from the soil in Jiuzhaigou Nature Reserve, southwestern China. The new taxon was studied based on morphological characters and phylogenetic analyses of three nuclear loci, i.e., the internal transcribed spacer rDNA operon (ITS), and large and small subunit nuclear ribosomal DNA (nuc28S rDNA, nuc18S rDNA). The analyzed Trematosphaeria species were clustered in several clades within the Pleosporales and the genus was shown to be polyphyletic. The new species is introduced as Trematosphaeria terricola, and it is characterized by short-papillate ascomata with suborbicular ostiolum, 3-septate, cinnamon-brown, fusiform ascospores with narrowly rounded ends, verruculose at maturity. Trematosphaeria terricola is compared with morphologically similar species T. confusa, T. mangrovis, and T. pertusa, which differ from the former species in the number of septa, and the shape and size of the ascospores with or without a sheath. This is the first report of a Trematosphaeria isolate from alpine soil in China.