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Taxonomic diversity of European Cottus : with description of eight new species (Teleostei: Cottidae)
(2005)
The taxonomy of European species of Coitus (Cottidae) is revised. Results of molecular studies are summarised and the variability of morphological characters is reviewed. Molecular and morphological data support the recognition of 15 diagnosable species in Europe. A neotype is designated for C. gobio; the type locality is in the lower Elbe drainage. Coitus gobio, C. hispaniolensis, C. koshewnikowi, C. microstomus, C. petiti, and C. poecilopus are re-diagnosed. Eight new species are described. Three of them are restricted to France: C. aturi to the Adam drainage, C. duranii to the upper Dordogne, upper Lot and upper Loire drainages, and C. rondeleti to the Herault drainage. Two new species are described from the Atlantic and North Sea basins: C. perifretum from Great Britain, and the ScheIdt, Rhine, Seine, lower Loire and lower Garonne drainages, and C. rhenanus from the Meuse and lower and middle Rhine drainages. Coitus scatul'igo is described from a single spring in northeastern Italy. In the Danube drainage, C. mctae front the upper Save and C. transsilvaniae from the upper Arges are distinguished from the widespread C. gobio. Lectotypes are designated for C. ferrugineus and C. pellegrini. Coitus kosllewnikowi Gratzianow, 1907 is declared nomel1 protectum and C. gobio microcephalus Kessler, 1868 is declared nomen oblitum. The original spelling of C. milvensis is discussed.
Paleogeographical, morphological, ecological, physiological, linguistic, archaeological and historical evidence is used to explain the origin and history of the domestication of the wild common carp. The closest wild ancestor of the common carp originated in the drainages of the Black, Caspian andAral seas and dispersed west as far as the Danube River and east into Siberia. The common carp today is represented by the uncertain east Asian subspecies Cyprinus carpio haematopterus and by the European Cyprinus carpio carpio. There is some reason to think that Romans were the first to culture carp collected from the Danube, and that the tradition of the "piscinae dulces" was continued in monasteries throughout the Middle Ages. We have much better documentation of carp culture in ponds of lay and clerical landowners in western Europe after the 11 th century. Distribution of the common carp west of the Danube's piedmont zone was clearly brought about by humans, as was its introduction throughout the continents. Some domestication in China may have occurred independently of similar activities in Europe, but most of the modern-day activities with the common carp in far east Asia are restricted to the domesticated common carp imported from Europe, or at best to hybrids of local and imported strains. The xanthic (red) common carp seem to have first appeared in early cultures of Europe, China and Japan but reached their fame through recent artificial selection of multicolored aberrants in Niigata Prefecture of Japan. In monetary value, production of the colored carp - the Japanese "nishikigoi" - now exceeds the production of carp as human food. As "swimming flowers" nishikigoi delight modem people as much as the taste of carp may have delighted the Romans and medieval folks at the beginning of carp domestication. The common carp is not only the most important domesticated fish but contributes over I million metric tons to world aquaculture. The surviving wild forms of the common carp are threatened or close to the fate of the aurochs, the ancestor of cattle, which became extinct in 1627.
This list of microscopic features for hardwood identification is the successor to the "Standard List of Characters Suitable For Computerized Hardwood Identification" published in 1981 (IAWA Bulletin n.s. 2: 99-145) with an explanation of the coding procedure by R.B. Miller. The 1981 publication greatly stimulated international exchange of information and experience on characters suitable for hardwood identification, and inspired considerable debate on the most desirable coding procedures and identification programs. Therefore, at the IA W A meeting during the XIV International Botanical Congress in Berlin, July 1987, it was decided to revise the 1981 standard list. Because of the continuing developments in computer technology and programming, it was agreed to limit the scope of the new list to definitions, explanatory commentary, and illustrations of wood anatomical descriptors, rather than concentrate on coding procedures. A new Committee was appointed by the IA W A Council to work towards the new list, and thanks to a substantial grant from the USDA Competitive Research Grants - Wood Utilization Program (Grant No. 88-33541-4081), a workshop was held by the Committee from October 2-7, 1988, in the Department of Wood & Paper Science, North Carolina State University, Raleigh, NC, USA, under the joint auspices of IA WA and IUFRO Division S. A preliminary list was prepared during the workshop. IA W A members were invited to comment on this list, and these comments helped with the final preparation of the new list. The list presented here was agreed to after review of subsequent drafts and extensive internal consultation between committee members. Although this list has 163 anatomical and 58 miscellaneous features, it is not a complete list encompassing all the structural patterns that one can encounter in hardwoods. Instead it is intended to be a concise list of features useful for identification purposes. Also, the numbers assigned to each feature in the present list are not meant to be codes for a computer program, but are intended to serve for easy reference, and to help translate data from one program/database to another. Wood and wood cells are biological elements, formed in trees, shrubs, and climbers to fulfill a physiological or mechanical function. Although there is more discrete diversity in wood structure than in many other plant parts, there is also much continuous variation, and any attempt to classify this diversity into well-defined features has an artificial element. Yet we are confident that in the feature list presented here ambiguity of descriptors has been limited to a minimum, and we hope that all present and future colleagues engaged in wood identification and descriptive wood anatomy will find this list a valuable guide and reference.
I conducted an 18 month study on the behavior and ecology of two species of sympatric caviid rodents (Kerodon rupestris and Galea spixii) in northeastern Brazil. Preliminary observations indicated that Kerodon was a habitat specialist. occurring only in large boulder piles. whereas Galea appeared to be a habitat generalist. occurring in a variety of open habitats excepting the boulder piles inhabited by Kerodon. This situation presented an ideal field experiment to compare the social structures in these two closely related genera. I first established breeding colonies of both in order to describe their behavioral displays and to discern their function. Complete behavioral repeltoires. including vocalizations. are presented for both Kerodon and Galea. Reproduction and growth. behavioral development. sexual behavior. agonistic behavior. and use of space were all examined both quantitatively and qualitatively in the colonies and in the field. Time budgets were calculated and analyzed for both genera. Differences in rates of growth and behavioral development between the two genera afe probably related to ecological aspects of their significantly different microhabitat preferences. Data on sexual and agonistic behavior collected in the colonies suggested that Kerodon exhibited resource defense polygyny, whereas the Galea mating system approximated male dominance polygyny. Field data supported the colony observations. These differences in mating systems may be related to the different habitat preferences observed. Kerodvll is compared to other resource defense polygynists. Finally, a model for the evolution of behavior in the family Caviidae is presented. The social organizations of the various genera seem to be very responsive to ecological requirements. The importance of social organization in ecological adaptation is discussed.
Maintenance of genomic integrity is essential to avoid cellular transformation, neoplasia, or cell death. DNA synthesis, mitosis, and cytokinesis are important cellular processes required for cell division and the maintenance of cellular homeostasis; they are governed by many extra- and intra-cellular stimuli. Progression of normal cell division depends on cyclin interaction with cyclin-dependent kinases (Cdk) and the degradation of cyclins before chromosomal segregation through ubiquitination. Multiple checkpoints exist and are conserved in the cell cycle in higher eukaryotes to ensure that if one fails, others will take care of genomic integrity and cell survival. Many genes act as either positive or negative regulators of checkpoint function through different kinase cascades, delaying cell cycle progression to repair the DNA lesions and breaks, and assuring equal segregation of chromosomes to daughter cells. Understanding the checkpoint pathways and genes involved in the cellular response to DNA damage and cell division events in normal and cancer cells, provides information about cancer predisposition, and suggests design of small molecules and other strategies for cancer therapy. Key Words: ATM-ATR; ATM/ATR; Aurora kinases; BRCAl; Cdc6; Cdc25; Cdc27-Cdc20/CdhI; Cell cycle; CENP-E; centrosome; checkpoint; Chkl/Chk2; cyc1in-Cdk; cyclindependent kinase inhibitors (CKI); hATRIP; Mad/Bub; MCM; MgcRacGAP; microtubule-associated proteins (MAPs); mitotic exit network (MEN); Mpsl; NIMA kinases; ORC; p53; PCNA; PBK-Akt; Plk; Rad50-Nbsl-Mrell; Ran-GTP; Ras; RB-E2F; SMC; Teml.
Twelve genera, two of them new, are recognized in the tribe Adesmiini in southern Africa. Four new species of Epiphysa, one of Alogenius (placed in a new subgenus), two of Stenocara, one of Metriopus, and one placed in one of the new genera, are described. The genera are revised, and their distribution and relationship are briefly discussed