U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication year rev 7985-2015 Remove constraint Publication year rev: 7985-2015 Subject synapomorphy Remove constraint Subject: synapomorphy
Start Over

Search

29  Search Results

1 - 29 of 29
Number of results to display per page

Search Results

1. Advances in the phylogeny of Helvella (Fungi: Ascomycota), inferred from nuclear ribosomal LSU sequences and morphological data

Author:
Fidel Landeros; Teresa Iturriaga; Aarón Rodríguez; Georgina Vargas-Amado; Laura Guzmán-Dávalos
Source:
Revista mexicana de biodiversidad 2015 v.86 no.4 pp. 856-871
ISSN:
1870-3453
Subject:
Helvella; asci; fungi; monophyly; nucleotide sequences; ribosomal DNA; synapomorphy
Abstract:
... Phylogenetic relationships in the genus Helvella were investigated using both LSU rDNA sequences and morphological features. The latter were coded and included in the analyses, resulting in better-supported clades. Helvella is monophyletic and Wynnella is its sister genus. Aporhynchous vs. pleurorhynchous asci are the synapomorphies for the 2 subgenera, Leucomelaenae and Helvella, which were confi ...
DOI:
10.1016/j.rmb.2015.09.005

2. Bony ornamentation of the catfish pectoral-fin spine: comparative and developmental anatomy, with an example of fin-spine diversity using the Tribe Brachyplatystomini (Siluriformes, Pimelodidae)

Author:
Vanscoy Tyler; Lundberg John G.; Luckenbill Kyle R.
Source:
Proceedings of the Academy of Natural Sciences of Philadelphia 2015 v.164 no.1 pp. 177-212
ISSN:
1938-5293
Subject:
Brachyplatystoma; adults; catfish; monophyly; scientific illustration; synapomorphy; taxon descriptions; terminology; texture
Abstract:
... The anatomy and development of the siluriform pectoral-fin spine is described, illustrated and a terminology is suggested for its parts. Catfish pectoral-fin spines exhibit considerable diversity of size, shape, robustness, surface texture and, especially, details of the dentated or serrated anterior and posterior margins. This study illustrates the variety, and taxonomic and phylogenetic signific ...
DOI:
10.1635/053.164.0107

3. Caladenia revisited: Results of molecular phylogenetic analyses of Caladeniinae plastid and nuclear loci

Author:
Mark A. Clements; Christopher G. Howard; Joseph T. Miller
Source:
American journal of botany 2015 v.102 no.4 pp. 581-597
ISSN:
0002-9122
Subject:
Caladenia; internal transcribed spacers; leaves; loci; new combination; synapomorphy; taxonomic revisions; threatened species; trichomes
Abstract:
... • Premise of the study: The classification of the primarily Australasian group of orchids Caladenia and allied genera (Caladeniinae: Diurideae) containing 71 federally listed threatened species has proven controversial. Analyzing these species using genetic material will provide a sound basis for their classification and the capacity to ensure accurate conservation measures can be implemented. • M ...
DOI:
10.3732/ajb.1500021

4. Chromosomal analysis: an effective research tool in phylogenetics and taxonomy of parasitoid Hymenoptera

Author:
V.E. Gokhman
Source:
Kavkazskij èntomologičeskij bûlletenʹ 2015 v.11 no.1 pp. 71-73
ISSN:
1814-3326
Subject:
Hymenoptera; parasitoids; synapomorphy; taxonomy
Abstract:
... A brief review of phylogenetic and taxonomic implications of chromosomal analysis of parasitoid Hymenoptera is given. Although karyotypic research of parasitoids is generally represented by studies using pre-existing phylogenetic reconstructions of certain taxa, accumulating evidence can suggest some chromosomal synapomorphies that define a number of clades. As far as taxonomic aspects of the chro ...
DOI:
DOI:10.23885/1814-3326-2015-11-1-71-73

5. Development and evolution of the female gametophyte and fertilization process in Welwitschia mirabilis (Welwitschiaceae)

Author:
William E. Friedman
Source:
American journal of botany 2015 v.102 no.2 pp. 312-324
ISSN:
0002-9122
Subject:
Ephedra; Gnetum; Welwitschia mirabilis; coagulation; cytoplasm; females; gametophytes; nucellus; ova; pollen tubes; spermatozoa; synapomorphy; zygote
Abstract:
... • Premise of the study: The female gametophyte of Welwitschia has long been viewed as highly divergent from other members of the Gnetales and, indeed, all other seed plants. However, the formation of female gametes and the process of fertilization have never been observed. • Methods: Standard histological techniques were applied to study gametophyte development and the fertilization process in Wel ...
DOI:
10.3732/ajb.1400472

6. Evolution of Angiosperm Pollen. 1. Introduction1

Author:
Wortley Alexandra H.; Wang Hong; Lu Lu; Li De-zhu; Blackmore Stephen
Source:
Annals of the Missouri Botanical Garden 2015 v.100 no.3 pp. 177-226
ISSN:
0026-6493
Subject:
uncertainty; fossils; palynology; models; synapomorphy; monophyly; grains; system optimization; Angiospermae; topology; pollen; paraphyly
Abstract:
... This paper is the first in a series that documents the diversity, distribution, and evolution of palynological characters across angiosperms in a contemporary phylogenetic context, using modern optimization methods. The objectives of the series are: (1) to describe the diversity of pollen morphologies across the angiosperms; (2) to estimate ancestral palynological character states, diagnostic char ...
DOI:
10.3417/2012047

7. Evolution of Angiosperm Pollen. 2. The Basal Angiosperms1

Author:
Lu Lu; Wortley Alexandra H.; Li De-zhu; Wang Hong; Blackmore Stephen
Source:
Annals of the Missouri Botanical Garden 2015 v.100 no.3 pp. 227-269
ISSN:
0026-6493
Subject:
Amborellaceae; Austrobaileyaceae; Bayesian theory; Ceratophyllales; Chloranthales; Liliopsida; Nymphaeaceae; Schisandraceae; Trimeniaceae; data collection; grains; light microscopy; pollen; scanning electron microscopy; synapomorphy; topology
Abstract:
... Recently, evolutionary relationships among the five major lineages of the basal angiosperms, i.e., Amborellanae, Nymphaeanae, Austrobaileyanae, Magnolianae, and Ceratophyllanae, still remain incompletely or controversially resolved. This study reviews and reevaluates the origin, evolution, and systematic significance of pollen morphology in basal angiosperms. Pollen grains from 34 species of 31 ge ...
DOI:
10.3417/2012048

8. Filling in the gaps of the papilionoid legume phylogeny: The enigmatic Amazonian genus Petaladenium is a new branch of the early-diverging Amburaneae clade

Author:
Domingos Cardoso; Wallace M.B. São-Mateus; Daiane Trabuco da Cruz; Charles E. Zartman; Dirce L. Komura; Geoffrey Kite; Gerhard Prenner; Jan J. Wieringa; Alexandra Clark; Gwilym Lewis; R. Toby Pennington; Luciano Paganucci de Queiroz
Source:
Molecular phylogenetics and evolution 2015 v.84 pp. 112-124
ISSN:
1055-7903
Subject:
Cordyla; DNA; Dussia; Mildbraediodendron; Monopteryx; Myrospermum; Petaladenium; corolla; introns; legumes; quinolizidine alkaloids; rain forests; synapomorphy; trees; Central America; South America
Abstract:
... Recent deep-level phylogenies of the basal papilionoid legumes (Leguminosae, Papilionoideae) have resolved many clades, yet left the phylogenetic placement of several genera unassessed. The phylogenetically enigmatic Amazonian monospecific genus Petaladenium had been believed to be close to the genera of the Genistoid Ormosieae clade. In this paper we provide the first DNA phylogenetic study of Pe ...
DOI:
10.1016/j.ympev.2014.12.015

9. First evidence for (TTAGG)n telomeric sequence and sex chromosome post-reduction in Coleorrhyncha (Insecta, Hemiptera)

Author:
Valentina G. Kuznetsova; Snejana M. Grozeva; Viktor Hartung; Boris A. Anokhin
Source:
Comparative cytogenetics 2015 v.9 no.4 pp. 523-532
ISSN:
1993-078X
Subject:
Heteroptera; chemical structure; fish; fluorescence; hybridization; insects; males; meiosis; mosses and liverworts; sex chromosomes; synapomorphy; telomeres
Abstract:
... Telomeric repeats are general and significant structures of eukaryotic chromosomes. However, nothing is known about the molecular structure of telomeres in the enigmatic hemipteran suborder Coleorrhyncha (moss bugs) commonly considered as the sister group to the suborder Heteroptera (true bugs). The true bugs are known to differ from the rest of the Hemiptera in that they display an inverted seque ...
DOI:
10.3897/CompCytogen.v9i4.5609

10. Inflorescence development in Abildgaardieae (Cyperaceae, Cyperoideae)

Author:
Andrea G. Reutemann; Abelardo C. Vegetti; Raúl Pozner
Source:
Flora 2015 v.210 pp. 3-12
ISSN:
0367-2530
Subject:
Cyperus; adults; apical meristems; flowering; inflorescences; leaves; phyllotaxy; scanning electron microscopy; shoots; synapomorphy
Abstract:
... Inflorescences in Cyperaceae are a source of characters with significant systematic value; however, the structure and primary homologies pose a challenge to their interpretation. The relationships among members of Abildgaardieae are not clear due to the absence of a phylogeny with strong support, comprising a representative number of species. Establishing correct primary homologies of inflorescenc ...
DOI:
10.1016/j.flora.2014.10.009

11. Molecular phylogenetics of the species-rich angiosperm genus Goniothalamus (Annonaceae) inferred from nine chloroplast DNA regions: Synapomorphies and putative correlated evolutionary changes in fruit and seed morphology

Author:
Chin Cheung Tang; Daniel C. Thomas; Richard M.K. Saunders
Source:
Molecular phylogenetics and evolution 2015 v.92 pp. 124-139
ISSN:
1055-7903
Subject:
testa; fruits; analysis of variance; chloroplast DNA; frugivores; Bayesian theory; Goniothalamus; synapomorphy; monophyly; branches; pollination; birds
Abstract:
... A phylogenetic study of the genus Goniothalamus (Annonaceae) is presented using maximum parsimony, maximum likelihood and Bayesian approaches, with 65 species sampled (48.5% of the genus) based on sequences of nine chloroplast DNA regions (11,214 aligned positions). The resultant phylogeny clearly indicates that Goniothalamus is monophyletic. Preliminary research initially focused on identifying s ...
DOI:
10.1016/j.ympev.2015.06.016

12. Molecular phylogeny of the Bothriocephalidea (Cestoda): molecular data challenge morphological classification

Author:
Jan Brabec; Andrea Waeschenbach; Tomáš Scholz; D. Timothy J. Littlewood; Roman Kuchta
Source:
International journal for parasitology 2015 v.45 no.12 pp. 761-771
ISSN:
0020-7519
Subject:
freshwater; pelagic fish; Gnathostomata; Eubothrium; data collection; tapeworms; synapomorphy; monophyly; biodiversity; paraphyly; Bothriocephalus acheilognathi; biogeography; North America
Abstract:
... In this study, the relationships of the cestode order Bothriocephalidea, parasites of marine and freshwater bony fish, were assessed using multi-gene molecular phylogenetic analyses. The dataset included 59 species, covering approximately 70% of currently recognised genera, a sample of bothriocephalidean biodiversity gathered through an intense 15year effort. The order as currently circumscribed, ...
DOI:
10.1016/j.ijpara.2015.05.006

13. Morphology and phylogeny of four species from the genus Bacteriastrum (Bacillariophyta)

Author:
Sunčica Bosak; Luka Šupraha; Deepak Nanjappa; Wiebe H.C.F. Kooistra; Diana Sarno
Source:
Phycologia 2015 v.54 no.2 pp. 130-148
ISSN:
2330-2968
Subject:
Bacillariophyceae; Bacteriastrum; electron microscopy; monophyly; synapomorphy; ultrastructure; Adriatic Sea
Abstract:
... Four colonial species of the multipolar centric diatom genus Bacteriastrum – B. furcatum, B. hyalinum, B. jadranum and B. mediterraneum – were investigated using field samples from the Adriatic Sea and cultured strains obtained from these samples. Morphology and frustule ultrastructure were examined using light and electron microscopy, and nuclear-encoded large-subunit (LSU) rDNA sequences were ob ...
DOI:
10.2216/14-62

14. On the desmitracheate “micronetine” genus Nippononeta Eskov, 1992 (Araneae, Linyphiidae)

Author:
Ming Yan; Xiaokai Liang; Lihong Tu
Source:
ZooKeys 2015 v.484 pp. 95-109
ISSN:
1313-2970
Subject:
Linyphiidae; genitalia; synapomorphy
Abstract:
... The desmitracheate system in a “micronetine” genus Nippononeta Eskov, 1992 is recognized for the first time in the present study. This makes the subfamilial placement of this genus problematic. A morphological study was conducted for Nippononeta kurilensis Eskov, 1992 (the type species of Nippononeta) and Nippononeta coreana (Paik, 1991). Characters of genitalia and tracheal system, as well as som ...
DOI:
10.3897/zookeys.484.8663

15. Phylogenetic framework of the systematically confused Anteholosticha–Holosticha complex (Ciliophora, Hypotrichia) based on multigene analysis

Author:
Xiaolu Zhao; Shan Gao; Yangbo Fan; Michaela Strueder-Kypke; Jie Huang
Source:
Molecular phylogenetics and evolution 2015 v.91 pp. 238-247
ISSN:
1055-7903
Subject:
Ciliophora; genes; internal transcribed spacers; monophyly; polyphyly; synapomorphy
Abstract:
... The Anteholosticha–Holosticha complex is an extremely divergent group within the urostylids, especially because the genus characterization lacks suitable synapomorphies. Previous studies have shown that morphological classification of species within this group often conflicts with SSU-rDNA data, that is this complex is not recovered as a monophyletic group and Anteholosticha spp. are widely disper ...
DOI:
10.1016/j.ympev.2015.05.021

16. Phylogenetic relationships in Asarum: Effect of data partitioning and a revised classification

Author:
Brandon T. Sinn; Lawrence M. Kelly; John V. Freudenstein
Source:
American journal of botany 2015 v.102 no.5 pp. 765-779
ISSN:
0002-9122
Subject:
Asarum; analytical methods; data collection; fungi; genetic markers; internal transcribed spacers; loci; monophyly; new subgenus; plastid genome; self-pollination; synapomorphy; topology
Abstract:
... • Premise of the study: Generic boundaries and infrageneric relationships among the charismatic temperate magnoliid Asarum sensu lato (Aristolochiaceae) have long been uncertain. Previous molecular phylogenetic analyses used either plastid or nuclear loci alone and varied greatly in their taxonomic implications for the genus. We analyzed additional molecular markers from the nuclear and plastid ge ...
DOI:
10.3732/ajb.1400316

17. Phylogenetic revision of Minyomerus Horn, 1876 sec. Jansen & Franz, 2015 (Coleoptera, Curculionidae) using taxonomic concept annotations and alignments

Author:
M. Andrew Jansen; Nico M. Franz
Source:
ZooKeys 2015 v.528 pp. 1-133
ISSN:
1313-2970
Subject:
Curculionidae; host plants; monophyly; parthenogenesis; provenance; synapomorphy; Canada; Mexico
Abstract:
... This contribution adopts the taxonomic concept annotation and alignment approach. Accordingly, and where indicated, previous and newly inferred meanings of taxonomic names are individuated according to one specific source. Articulations among these concepts and pairwise, logically consistent alignments of original and revisionary classifications are also provided, in addition to conventional nomen ...
DOI:
10.3897/zookeys.528.6001

18. Phylogeny and biogeography of Tynanthus Miers (Bignonieae, Bignoniaceae)

Author:
Maria Cláudia M.P. de Medeiros; Lúcia G. Lohmann
Source:
Molecular phylogenetics and evolution 2015 v.85 pp. 32-40
ISSN:
1055-7903
Subject:
Bignoniaceae; biodiversity; biogeography; cloves; flowers; fruits; lianas; monophyly; odors; paraphyly; synapomorphy; tropics; Amazonia; Central America; South America
Abstract:
... The origin of Neotropical biodiversity represents a key question in evolutionary biology. Despite the attempts to decipher the role of ecological and historical factors to present-day distribution patterns, robust phylogenetic studies of Neotropical clades are still needed before a comprehensive picture of the origin of Neotropical biodiversity can be achieved. Tynanthus Miers (Bignonieae, Bignoni ...
DOI:
10.1016/j.ympev.2015.01.010

19. Resolving relationships within the palm subfamily Arecoideae (Arecaceae) using plastid sequences derived from next-generation sequencing

Author:
Jason R. Comer; Wendy B. Zomlefer; Craig F. Barrett; Jerrold I. Davis; Dennis Wm. Stevenson; Karolina Heyduk; James H. Leebens-Mack
Source:
American journal of botany 2015 v.102 no.6 pp. 888-899
ISSN:
0002-9122
Subject:
Elaeis guineensis; chloroplasts; coconut oil; data collection; flowering; genes; high-throughput nucleotide sequencing; hybrids; monophyly; plastid genome; polymerase chain reaction; synapomorphy; South America
Abstract:
... • Premise of the study: Several studies have incorporated molecular and morphological data to study the phylogeny of the palms (Arecaceae), but some relationships within the family remain ambiguous—particularly those within Arecoideae, the most diverse subfamily including coconut and oil palm. Here, two next-generation, targeted plastid-enrichment methods were compared and used to elucidate Arecoi ...
DOI:
10.3732/ajb.1500057

20. Systematics of Nothopsini (Serpentes, Dipsadidae), with a new species of Synophis from the Pacific Andean slopes of southwestern Ecuador

Author:
R. Alexander Pyron; Juan M. Guayasamin; Nicolás Peñafiel; Lucas Bustamante; Alejandro Arteaga
Source:
ZooKeys 2015 v.541 pp. 109-147
ISSN:
1313-2970
Subject:
Dipsadidae; cryptic species; monophyly; new species; synapomorphy; Andes region; Ecuador
Abstract:
... Within Dipsadinae, some recent authors have recognized a tribe Nothopsini containing the genera Diaphorolepis , Emmochliophis , Nothopsis , Synophis , and Xenopholis , on the basis of a number of putative morphological synapomorphies. However, molecular results suggest that Nothopsis , Synophis , and Xenopholis do not form a monophyletic group, while the remaining taxa are unsampled in recent mole ...
DOI:
10.3897/zookeys.541.6058

21. Taxonomic updates in Dolichandra Cham. (Bignonieae, Bignoniaceae)

Author:
Luiz Henrique M. Fonseca; Simone Miranda Cabral; Maria de Fátima Agra; Lúcia G. Lohmann
Source:
PhytoKeys 2015 v.46 pp. 35-43
ISSN:
1314-2003
Subject:
Dolichandra; Neotropics; synapomorphy; taxonomic keys
Abstract:
... Dolichandra is a genus of lianas found in dry and wet Neotropical forests. The genus currently includes eight species and is well characterized by molecular and morphological synapomorphies. Here, Macfadyena hispida (DC.) Seemann is removed from synonomy with Dolichandra uncata (Andrews) L.G. Lohmann based on the presence of the hispid indument, vinaceus ovary, long fruits, and winged seeds. The c ...
DOI:
10.3897/phytokeys.46.8421

22. Taxonomy and phylogeny of yellow Clavaria species with clamped basidia—Clavaria flavostellifera sp. nov. and the typification of C. argillacea, C. flavipes and C. sphagnicola

Author:
Ibai Olariaga; Isabel Salcedo; Pablo P. Daniëls; Brian Spooner; Ivona Kautmanová
Source:
Mycologia 2015 v.107 no.1 pp. 104-122
ISSN:
1557-2536
Subject:
Clavaria; basidia; color; hyphae; internal transcribed spacers; mycelium; new species; paraphyly; spores; synapomorphy
Abstract:
... This study explores species limits of a group of Clavaria species with taxonomic and nomenclatural problems and discusses the phylogeny and circumscription of the genus. The nuc 28S rDNA (28S) and internal transcribed spacer region phylogenies resolve species relationships, and the ITS is shown to be an adequate barcode marker for Clavaria. Yellow, clamped species of Clavaria are distributed in tw ...
DOI:
10.3852/13-315

23. Two new species of Euptychia Hübner, 1818 from the upper Amazon basin (Lepidoptera, Nymphalidae, Satyrinae)

Author:
Andrew F. E. Neild; Shinichi Nakahara; Thamara Zacca; Steven Fratello; Gerardo Lamas; Jean-François Le Crom; Diego R. Dolibaina; Fernando M. S. Dias; Mirna M. Casagrande; Olaf H. H. Mielke; Marianne Espeland
Source:
ZooKeys 2015 v.541 pp. 87-108
ISSN:
1313-2970
Subject:
Nymphalidae; basins; genitalia; monophyly; new species; synapomorphy; wings; Brazil; Venezuela
Abstract:
... Two new species of Euptychia Hübner, 1818 are described from the upper Amazon basin: Euptychia attenboroughi Neild, Nakahara, Fratello & Le Crom, sp. n. (type locality: Amazonas, Venezuela), and Euptychia sophiae Zacca, Nakahara, Dolibaina & Dias, sp. n. (type locality: Acre, Brazil). Their unusual facies prompted molecular and phylogenetic analyses of one of the species resulting in support for t ...
DOI:
10.3897/zookeys.541.6297

24. What is the molluscan osphradium? A reconsideration of homology

Author:
David R. Lindberg; Julia D. Sigwart
Source:
Zoologischer Anzeiger 2015 v.256 pp. 14-21
ISSN:
0044-5231
Subject:
Mollusca; epithelium; gills; molluscs; researchers; sense organs; synapomorphy; ultrastructure
Abstract:
... The relationships among the living classes of molluscs have remained contentious, in part because of a lack of consistent morphological characters that unequivocally unite clusters of taxa within this extremely disparate phylum. The osphradium, a chemosensory organ on or near the gills, is a putative potential synapomorphy of Mollusca. Although the osphradium regularly appears on illustrations of ...
DOI:
10.1016/j.jcz.2015.04.001

25. The epitensoric chorda tympani of Laonastes aenigmamus (Rodentia, Diatomyidae) and its phylogenetic implications

Author:
Adrian Tröscher; Wolfgang Maier; Irina Ruf; Jean-Pierre Hugot; Madelaine Böhme
Source:
Mammalian biology = 2015 v.80 no.2 pp. 96-98
ISSN:
1616-5047
Subject:
Primates; Rodentia; carnivores; rodents; synapomorphy
Abstract:
... Earlier studies have shown that the epitensoric position of the chorda tympani is a systematically useful apomorphic character in some mammalian orders (primates, carnivores, rodents). Newly made histological serial sections of a fetal stage now reveal that Laonastes aenigmamus (Diatomyidae), a rodent species first described in 2005, is epitensoric as well. Because Ctenodactylus gundi is the only ...
DOI:
10.1016/j.mambio.2014.12.008

26. The morphology of the eggs of three species of Zoraptera (Insecta)

Author:
Yuta Mashimo; Rolf G. Beutel; Romano Dallai; Marco Gottardo; Chow-Yang Lee; Ryuichiro Machida
Source:
Arthropod structure & development 2015 v.44 no.6 pp. 656-666
ISSN:
1467-8039
Subject:
Zorotypus; chorion; eggs; hatching; males; spermatheca; spermatozoa; synapomorphy
Abstract:
... The egg structure of Zorotypus magnicaudelli, Zorotypus hubbardi and Zorotypus impolitus was examined and described in detail. Major characteristics of zorapteran eggs previously reported were confirmed in these species, with the partial exception of Z. impolitus: 1) a pair of micropyles at the equator of the egg's ventral side, 2) a honeycomb pattern on the egg surface, 3) a two-layered chorion, ...
DOI:
10.1016/j.asd.2015.09.005

27. The nasus gland: A new gland in soldiers of Angularitermes (Termitidae, Nasutitermitinae)

Author:
Jan Šobotník; Thomas Bourguignon; Tiago F. Carrijo; Christian Bordereau; Alain Robert; Barbora Křížková; Joice P. Constantini; Eliana M. Cancello
Source:
Arthropod structure & development 2015 v.44 no.5 pp. 401-406
ISSN:
1467-8039
Subject:
Blattodea; Termitidae; exocrine glands; secretion; synapomorphy
Abstract:
... Termites have developed many exocrine glands, generally dedicated to defence or communication. Although a few of these glands occur in all termite species, or represent synapomorphies of larger clades, others are morphological innovations of a single species, or a few related species. Here, we describe the nasus gland, a new gland occurring at the base of the nasus of Angularitermes soldiers. The ...
DOI:
10.1016/j.asd.2015.08.006

28. A new phylogeny of the Cephalaspidea (Gastropoda: Heterobranchia) based on expanded taxon sampling and gene markers

Author:
Trond R. Oskars; Philippe Bouchet; Manuel António E. Malaquias
Source:
Molecular phylogenetics and evolution 2015 v.89 pp. 130-150
ISSN:
1055-7903
Subject:
Cephalaspidea; genes; genetic markers; mitochondria; monophyly; new family; new genus; ribosomal RNA; synapomorphy
Abstract:
... The Cephalaspidea is a diverse marine clade of euthyneuran gastropods with many groups still known largely from shells or scant anatomical data. The definition of the group and the relationships between members has been hampered by the difficulty of establishing sound synapomorphies, but the advent of molecular phylogenetics is helping to change significantly this situation. Yet, because of limite ...
DOI:
10.1016/j.ympev.2015.04.011

29. The sperm ultrastructure and spermiogenesis of Tribolium castaneum (Coleoptera: Tenebrionidae) with evidence of cyst degeneration

Author:
Glenda Dias; José Lino-Neto; David Mercati; Romano Dallai
Source:
Micron 2015 v.73 pp. 21-27
ISSN:
0968-4328
Subject:
Meloidae; Tribolium castaneum; acrosome; flagellum; mitochondria; spermiogenesis; synapomorphy; testes; transmission electron microscopy; ultrastructure
Abstract:
... Previous studies on the spermatogenesis of tenebrionid beetles showed the unusual formation of two antiparallel sperm bundles per cyst. In this work we reported this feature also in Tribolium castaneum using light and transmission electron microscopy. The sperm structure of T. castaneum, similar to other tenebrionids, consists of a three-layered acrosome, an elongated nucleus and a flagellum with ...
DOI:
10.1016/j.micron.2015.03.003