Allopatric distribution of juvenile red-legged banana prawns (Penaeus indicus H. Milne Edwards, 1837) and juvenile white banana prawns (Penaeus merguiensis De Man, 1888), and inferred extensive migration, in the Joseph Bonaparte Gulf, northwest Australia

During October to December 1997, we trawled estuarine habitats in the Joseph Bonaparte Gulf (JBG) to determine the distribution of juvenile red-legged banana prawns, Penaeus indicus (H. Milne Edwards, 1837) and white banana prawns, Penaeus merguiensis (de Man, 1888). We made 229 beam-trawls at 185 sites, mostly over a 100-m path (3-min duration). A Global Positioning System (GPS) receiver was used to verify our location. During October to December 1998, we intensively resampled three of the rivers that were sampled in 1997 to confirm the gulf-wide distribution of P. indicus and P. merguiensis and to investigate the microhabitat use of P. indicus. We chose previously sampled and new sites in Forsyth Creek (eastern JBG), the Lyne River (Cambridge Gulf), and the Berkeley River (western JBG). We made 249 trawls at 21 sites, mostly over 100 m.Juvenile banana prawns were abundant in eastern JBG, Cambridge Gulf and western JBG. They were not abundant in southern JBG, although fewer trawls were made there, due to its inaccessibility. In eastern JBG and Cambridge Gulf, over 96% and 73% (respectively) of juvenile banana prawns were P. indicus and they were more abundant there than in the western JBG. Conversely, in the western JBG over 93% of the juvenile banana prawns were P. merguiensis and they were more abundant than in the eastern JBG and Cambridge Gulf. The Lyne River in the northwestern Cambridge Gulf seems to be the transition zone; both P. indicus and P. merguiensis are equally abundant.P. indicus are most abundant on the mangrove-lined muddy banks of waterways within mangrove forests, similar habitats to P. merguiensis. Within these habitats, they were most abundant in gutters and small creeks, rather than rivers and large creeks. Few P. indicus or P. merguiensis were caught in 100 m² trawls undertaken midriver (on the channel bottom and on emergent banks), although these habitats may be only 100 m from the mangrove-lined habitats. In all creek and river habitats, both species are most catchable at low tide (irrespective of daylight or darkness) when they move out of the mangrove forests and accumulate in the remnant water bodies.The offshore fishery for P. indicus is in northwestern JBG in waters 50-80 m deep, about 300 and 200 km, respectively, from where juveniles are abundant in their extensive inshore habitats in east JBG and in Cambridge Gulf, demonstrating a geographical separation of the juvenile and adult phases. Postlarval P. indicus, spawned offshore, must use tides and currents to travel south and east to reach nursery habitats. Emigrant subadults must migrate north and west, across relatively shallow inshore sand substrates (30-40 m deep) to reach their offshore habitats.     

Investigation of Prolific Sheep from UK and Ireland for Evidence on Origin of the Mutations in BMP15 (FecXG,FecXB) and GDF9 (FecGH) in Belclare and Cambridge Sheep

This paper concerns the likely origin of three mutations with large effects on ovulation rate identified in the Belclare and Cambridge sheep breeds; two in the BMP15 gene (FecX^G and FecX^B) and the third (FecG^H) in GDF9. All three mutations segregate in Belclare sheep while one, FecX^B, has not been found in the Cambridge. Both Belclare and Cambridge breeds are relatively recently developed composites that have common ancestry through the use of genetic material from the Finnish Landrace and Lleyn breeds. The development of both composites also involved major contributions from exceptionally prolific ewes screened from flocks in Ireland (Belclare) and Britain (Cambridge) during the 1960s. The objective of the current study was to establish the likely origin of the mutations (FecX^G, FecX^B and FecG^H) through analysis of DNA from Finnish Landrace and Lleyn sheep, and Galway and Texel breeds which contributed to the development of the Belclare breed. Ewes with exceptionally high prolificacy (hyper-prolific ewes) in current flocks on Irish farms were identified to simulate the screening of ewes from Irish flocks in the 1960s. DNA was obtained from: prolific ewes in extant flocks of Lleyn sheep (n = 44) on the Lleyn peninsula in Wales; hyper-prolific ewes (n = 41); prolific Galway (n = 41) ewes; Finnish Landrace (n = 124) and Texel (n = 19) ewes. The FecX^G mutation was identified in Lleyn but not in Finnish Landrace, Galway or Texel sheep; FecX^B was only found among the hyper-prolific ewes. The FecG^H mutation was identified in the sample of Lleyn sheep. It was concluded from these findings that the Lleyn breed was the most likely source of the FecX^G and FecG^H mutations in Belclare and Cambridge sheep and that the FecX^B mutation came from the High Fertility line that was developed using prolific ewes selected from commercial flocks in Ireland in the 1960′s and subsequently used in the genesis of the Belclare.     

Mitochondrial DNA mutations in Japanese detected by polymerase chain reaction—restriction fragment—single strand conformation polymorphism analysis

PCR—restriction fragment—SSCP (PCR—RF—SSCP) analysis of mitochondrial DNA by HhaI/HincII in Japanese revealed 46 polymorphic patterns. The determinations of nucleotide sequence of these 46 patterns revealed 56 mutations compared with the Cambridge Sequence.     

The fracture toughness of cancellous bone

The mechanical capacity and integrity of cancellous bone is crucial in osteoporosis, a condition which is set to become more prevalent with increasing lifespan and population sizes. The fracture toughness (FT) of cancellous bone has never been examined before and the conditions associated with the growth of a major crack through the lattice of cancellous bone, a cellular solid, may improve our understanding for structural integrity of this material. The aim of this study is to provide (i) basic data on cancellous bone FT and (ii) the experimental support for the hypothesis of Gibson, L.J., Ashby, M.F. [1997a. Chapter 10: Wood. In: Cellular Solids: Structure and Properties, second ed. Cambridge University Press, pp. 387–428; Gibson, L.J., Ashby, M.F., 1997b. Chapter 11: Cancellous Bone. In: Cellular Solids: Structure and Properties, second ed. Cambridge University Press, pp. 429–52] that the FT of cancellous bone tissue is governed by the density of the tissue to a power function of between one and two. 294 SENB and 121 DC(T) specimen were manufactured from 45 human femoral heads, 37 osteoporotic and 8 osteoarthritic, as well as 19 equine thoracic vertebrae. The samples were manufactured in two groups: the first aligned with the trabecular structure (A_∥), the second orientated at 90° to the main trabecular orientation (A_⊥). The samples were tested in either tensile or bending mode to provide values of the stress intensity factor (K). The results which were obtained show a strong and significant link between the density of the cancellous bone tissue and that the critical stress intensity values are governed by the density of the tissue to a power function of between 1 and 2 (K_Q vs. apparent density: A_⊥=1.58, A_∥=1.6). Our results provide some fundamental values for the critical stress intensity factor for cancellous bone and also support the previous hypothesis as set by Gibson, L.J., Ashby, M.F., 1997a. Chapter 10: Wood. In: Cellular Solids: Structure and Properties, second ed. Cambridge University Press, pp. 387–428; Gibson, L.J., Ashby, M.F., (1997b). Chapter 11: Cancellous Bone. In: Cellular Solids: Structure and Properties, second ed. Cambridge University Press, pp. 429–52.     

Chimpocentrism revisited

A review of The Mentalities of Gorillas and Orangutans: Comparative Perspectives, edited by S.T. Parker, R.W. Mitchell, and H.L. Miles. Cambridge: Cambridge University Press, 1999, 419 pp., $85 hardbound     

Cultural diversity and schooling

Ashley H. Robins, BIOLOGICAL PERSPECTIVES ON HUMAN PIGMENTATION, (Cambridge Studies in Biological Anthropology, 7), Cambridge: Cambridge University Press, 1991, xiii + 253 pp., £37.50.

Ulfried Geuter, THE PROFESSIONALIZATION OF PSYCHOLOGY IN NAZI GERMANY. Cambridge Studies in the History of Psychology, Cambridge: Cambridge University Press, 1992, v‐xxi + 335 pp., npl.

Clare Midgley, WOMEN AGAINST SLAVERY. THE BRITISH CAMPAIGNS, 1780–1870, London: Routledge, 1992, xii + 281 pp., £37.50.

Maryinez Lyons, THE COLONIAL DISEASE: A SOCIAL HISTORY OF SLEEPING SICKNESS IN NORTHERN ZAIRE, 1900–1940, Cambridge: Cambridge University Press, 1992, xvi + 335 pp., £50.00.

Wim van Binsbergen, TEARS OF RAIN: ETHNICITY AND HISTORY IN CENTRAL WESTERN ZAMBIA, London and New York: Kegan Paul International, 1992, 495 pp., £45.00.

Albert B. Robillard (ed.) SOCIAL CHANGE IN THE PACIFIC ISLANDS, London: Kegan Paul International, 1992, xvi + 507 pp., £45.

Sarah Radcliffe and Sallie Westwood (eds) ‘VIVA’: WOMEN AND POPULAR PROTEST IN LATIN AMERICA, London: Routledge, 1993, 270 pp., £12.99 pb; £40.00 hb.

Cindi Katz and Janice Monk (eds) FULL CIRCLES: GEOGRAPHIES OF WOMEN OVER THE LIFECOURSE, London: Routledge, 1993, 317 pp., £12.99 pb; £40 hb.

Hans van Amersfoort and Hans Knippenberg (eds), STATES AND NATIONS. THE REBIRTH OF THE ‘NATIONALITIES QUESTION’ IN EUROPE, Netherlands Geographical Studies 137, Amsterdam: Koninklijk Nederlands Aardrijkskundig Genootschap, 1991, 189 pp., Dfl. 29.50.

Elizabeth D. Huttman, Wim Blauw and Juliet Saltman (eds), URBAN HOUSING SEGREGATION OF MINORITIES IN WESTERN EUROPE AND THE UNITED STATES, Durham, NC: Duke University Press, 1991, xiii + 431 pp., npl.

Roger Daniels, Sandra C. Taylor, and Harry H. L. Kitano (eds) JAPANESE AMERICANS: FROM RELOCATION TO REDRESS, Seattle, WA: University of Washington Press, 1992, 264 pp., $17.95 US (paper only).

David J. O'Brien and Stephen S. Fugita, THE JAPANESE AMERICAN EXPERIENCE, Bloomington and Indianapolis: Indiana University Press, 1991, 178 pp., £8.99 (paper).

Paul James Rutledge, THE VIETNAMESE EXPERIENCE IN AMERICA, Bloomington and Indianapolis: Indiana University Press, 1992, 173 pp., npl.     

Eel culture

Book reviews

Marine ecology and fisheriesD. H. Cushing. 1975. Cambridge Univ. Press, Cambridge. 278 pp.     

Solid state conformational classification of eight-membered rings in copper complexes double bridged by phosphate, phosphonate or phosphinate ligands

A statistical classification of the solid state conformation in the title complexes using data retrieved from the Cambridge Structural Database (CSD) has been made. Phosphate and phosphinate complexes show a chair conformation preferably. In phosphonate complexes, the most frequent conformations are found to be boat-chair, chair and boat-boat; in all the boat-chair cases, the phosphorus atoms appear connected by a bridging carbon atom.     

Maternally transmitted foetal <Emphasis Type="Italic">H19</Emphasis> variants and associations with birth weight

This study was designed to test the hypothesis that polymorphic variation in maternally transmitted foetal H19 alleles is associated with offspring size at birth and alterations in maternal glucose concentrations in pregnancy. Inferred parent of origins of transmitted alleles from 13 haplotype tag SNPs in the H19 gene region from 845 family (mother, partner, offspring) trios from the prospective Cambridge Baby Growth Study and 315 trios from the retrospective Cambridge Wellbeing Study cohorts were tested for association with offspring size at birth measures, as well as maternal glucose concentrations 1 h after a glucose load at week 28 of pregnancy. The foetal rs2071094 allele inherited from the mother was associated with increased birth weight (p = 0.0015) adjusted for gestational age, parity and sex. In the Cambridge Baby Growth Study it was also associated with increased head circumference (p = 0.004), length (p = 0.017) and sum of skinfold thicknesses (p = 0.017) at birth. In contrast to these results there was no association between offspring birth weight and either the maternal rs2071094 genotype or the foetal allele from the father. None of the foetal alleles or maternal genotypes were associated with maternal glucose concentrations, neither were there any other associations with offspring birth weight. In conclusion, consistent with imprinting, common polymorphic variation in foetal H19 alleles transmitted only from the mother are associated with birth weight and other markers of size at birth. Polymorphic variation in H19 is not associated with significant changes in maternal glucose tolerance in the third trimester of pregnancy.     

Book review

PRANCE, G.T. ed. (1986): Tropical Rain Forests and the World Atmosphere. American Association for the Advancement of Science Selected Symposium 101. Westview Press, Boulder, Colorado and London. 105 pp., some figs., paper. 20.50.

LOWE‐McCONNELL, R.H. (1987): Ecological Studies in Tropical Fish Communities. Cambridge University Press, Cambridge, London, New York, Melbourne. 382 pp. with tables and figs., paper. 12.95 (hardbound 35.00).     

Darstellung einer Kindertrage aus dem Nepeña‐Tal (Peru)

People as Subject. People as Object: Selfhood and Peoplehood in Contemporary Israel. Virginia Dominguez. New Directions in Anthropological Writing. Madison and London: University of Wisconsin Press, 1989. 238 pp.

Literacy and Society, edited by Karen Schous‐boe and Mogens Trolle Larsen. Copenhagen: Akademisk Forlag, 1989. 247 pp., ill.

Music of Afghanistan. Professional Musicians in the City of Herat. John Baily. Cambridge: Cambridge University Press, 1988. xiv + 183 pp. Accompanying cassette.

The Hidden Musicians. Music‐making in an English Town. Ruth Finnegan. Cambridge: Cambridge University Press, 1989. xvii + 378 pp.

Saints, Goddesses and Kings: Muslims and Christians in South Indian Society 1700–1900. Susan Bayly. South Asian Studies No 43. Cambridge: Cambridge University Press, 1989. 463 pp.

Mru. Bergbewohner im Grenzgebiet von Bangladesh. Claus‐Dieter von Brauns und Lorenz G. Löffler. Basel, Boston &; Stuttgart: Birkhäuser Verlag, 1986. 248 Seiten mit Farbtafeln, Schwarz‐Weiß‐Fotos, mehreren Karten, Bibliographie und Glossaren.

Mm. Hill People on the Border of Bangladesh (translated from German by Doris Wagner‐Glenn), 1990. 248 pp. ISBN 0–8176. 1816–3 (U. S.)

Unwrapping Japan—Society and Culture in Anthropological Perspective, edited by Eyal Ben‐Ari, Brian Moeran and Jamks Valentine. Manchester: Manchester University Press, 1990. 237 pp.

Developments in Polynesian Ethnology, edited by Alan Howard and Robert Borofsky. Honolulu: University of Hawaii Press, 1989.

Tungaru Traditions. Arthur Francis Grimble, edited by H.E. Maude, Pacific Islands Monograph Series, 7. Honolulu: University of Hawaii Press, 1989.

Scottish Crofters: A historical Ethnography of a Celtic Village. Susan Parman. Fort Worth: Holt, Rinehart and Winston, Inc., 1990. 169 pp., index.

Africa's Ogun: Old World and New, edited by Sandra T. Barnes. Bloomington: Indiana University Press, 1989. x + 274 pp.

Spirits from the Margin. Umbanda in Sao Paulo: A Study in Popular Religion and Social Experience. Fernando Giobellina Brumana and Elda Gonzales Martinez. Uppsala: Uppsala Studies in Cultural Anthropology 12, 1989. 308 pp.

Die Achuara‐Jivaro: Wirtschaftliche und soziale Organisationsformen am peruanischen Amazonas. Richard Gippelhauser and Elke Mader. Wien: Verlag der Österreichischen Akademie der Wissenschaften, Veröffentlichungen der Ethnologischen Kommission, Bd. 5, Sitzungsberichte 550. Bd., 1990. 123 pp.

Sayings of the Ancestors: The Spiritual Life of the Sibundoy Indians. John Holmes McDowell. Lexington: The University Press of Kentucky, 1989. 206 pp.

The Orders of the Dreamed: George Nelson on Cree and Northern Ojibwa Religion and Myth, 1823. Jennifer S.H. Brown and Robert Brightman. Manitoba Studies in Native History, III. Winnipeg: University of Manitoba Press, 1988. 266 pages. Index, 3 photos (1 color plate), 5 reproduced pictographs and figures, 2 maps.

Blood Ties, Life and Violence in Rural Mexico. James Greenberg. Tucson: University of Arizona Press, 1989.

Conversations in Colombia: The Domestic Economy in Life and Text. Stephen Gudeman and Alberto Rivera. Cambridge: Cambridge University Press, 1990. 207 pp.

Observing the Economy. C.A. Gregory and J.C. Altman. ASA Research Methods. London and New York: Routledge, 1989. 253 pp.

Lost Words and Lost Worlds: Modernity and the Language of Everyday Life in Late Nineteenth‐Century Stockholm. Allan Pred. Cambridge: Cambridge University Press, 1990. xvi + 298 pp.

Central Borneo: Ethnic Identity and Social Life in a Stratified Society. Jerome Rousseau. Oxford: Clarendon, 1990. 388 pp.

Stealing People's Names: History and Politics in a Sepik River Cosmology. Simon Harrison. Cambridge: Cambridge University Press, 1990. xiii, 217 pp., plates, maps, figures.     

New species of avian Hepatozoon (Apicomplexa: Haemogregarinidae) and a re-description of Hepatozoon neophrontis (Todd & Wohlbach, 1912) Wenyon, 1926

Seven new species of avian Hepatozoon, H. lanis, H. malacotinus, H. numidis, H. pittae, H. estrildus, H. sylvae and H. zosteropis, respectively, are described from the Laniinae, Malaconotinae, Numidinae, Pittidae, Poephilinae, Sylviinae and Zosteropidae. Hepatozoon adiei Hoare, 1924 is synonymised with Hepatozoon neophrontis (Todd &; Wolbach, 1912) Wenyon, 1926 from the Accipitridae and H. neophrontis re-described. Four species of Hepatozoon described by de Beaurepaire Aragão from Brazil are reviewed and Hepatozoon tanagrae (de Beaurepaire Aragão, 1911) Hoare, 1924 is synonymised with H. rhamphocoeli (de Beaurepaire Aragão, 1911) Hoare 1924 and H. brachyspizae (de Beaurepaire Aragão) Hoare, 1924 with H. paroariae (de Beaurepaire Aragão, 1911) Hoare, 1924. Illustrations and measurements for Hepatozoon albatrossi Peirce &; Prince, 1980, H. atticorae (de Beaurepaire Aragão, 1911) Hoare, 1924 and H. parus Bennett &; Peirce, 1989 are also presented to complete the review of the known avian species. The value of some potential morphological characteristics for distinguishing species of Hepatozoon is discussed.     

Helicobacter pylori causes runx3 gene methylation and its loss of expression in gastric epithelial cells, which is mediated by nitric oxide produced by macrophages

Previous reports have indicated that Helicobacter pylori (H. pylori) causes epigenetic changes of certain genes such as cancer suppression genes, which may be associated with carcinogenesis. However, the mechanism by which it causes epigenetic changes in certain genes and not in others is unclear. Presently, we focused on a cancer suppression gene, runx3, and demonstrated the following: (1) H. pylori induces nitric oxide (NO) production in macrophages. (2) NO causes methylation of runx3 in epithelial cells. (3) H. pylori induces the methylation of epithelial cells in the presence of macrophages, which is reversed by an NO-specific inhibitor. These results indicate that H. pylori-induced methylation is mediated by NO, and suggest that NO may be a key to the mechanism of how H. pylori causes epigenetic changes in certain genes. Additionally, we demonstrated that lipopolysaccharide, as well as H. pylori, induces NO-mediated methylation, indicating that other inflammation inducers beside H. pylori might induce aberrant methylation of runx3.     

H(Tla) system: Identification of two new loci,H-31 andH-32, and alleles

Skin and tumor grafting experiments performed on F₁ hybrid mice indicate that theH(Tla) histocompatibility system is composed of at least two genetic loci,H(Tla-1) andH(Tla-2), and that one of these loci,H(Tla-1), has at least three alleles. We suggest thatH(Tla-1) andH(Tla-2) be renamedH-31 andH-32, respectively.     

Study on genetic variations of PPARα gene and its effects on thermal tolerance in Chinese Holstein

Peroxisome proliferator-activated receptor alpha (PPARα) regulates responses to chemical or physical stress in part by altering expression of genes involved in proteome maintenance. In this research, polymerase chain reaction (PCR) technique was used to amplify 766 and 589 bp fragments of intron 3 and 7 of PPARα gene in Chinese Holstein (n = 771). Sequencing results showed that three novel single nucleotide polymorphisms (SNPs) were identified at position 44087 (G/A), 65550 (G/A), and 65676(G/A) in the PPARα gene. PCR–restriction fragment length polymorphism technology was used to genotype the three SNPs. Association analysis showed that cows with H1H8 (P < 0.05), H2H8 (P < 0.01), H5H7 (P < 0.05), H5H8 (P < 0.05), and H8H8 (P < 0.05) haplotype combinations had lower potassium content in erythrocytes than those with H2H6 haplotype combination. Cows with H1H8, and H8H8 haplotype combinations had lower decrease rate of milk yield than those with H2H6 and H6H8 haplotype combinations (P < 0.05). Cows with H2H8 and H8H8 haplotype combinations had lower rectal temperature than those with H5H8 and H7H7 haplotype combinations (P < 0.05). In conclusion, H8H8 haplotype combination may be advantageous for heat resistance traits in Chinese Holstein cattle.     

A qualitative difference in plasma renin activity in dahl rats susceptible or resistant to salt-induced hypertension

Plasma renin activity (PRA) was studied in the rats bred by Dahl for susceptibility (S-strain) or resistance (R-strain) to salt (NaCl) induced hypertension. The pH curves for PRA had different shapes. The difference in shape of the pH curves was reflected in the ratio of PRA pH 8/PRA pH 6.5. This ratio was shown to be characteristic of the strain and to be independent of changes in absolute PRA level induced by variation in dietary NaCl. The ratio of PRA pH 8/PRA pH 6.5 was also different between strains in weanling as well as adult rats. The underlying cause for the strain difference in the effect of pH on PRA is unknown, but may involve molecular differences between strains in either renin or renin substrate.     

The interaction between EAP30 and ELL is modulated by MCM2

ELL-associated protein 30 (EAP30) was initially characterized as a component of the Holo-ELL complex, which contains the elongation factor ELL. Both ELL and Holo-ELL stimulate RNA pol II elongation in vitro. However, ELL and not Holo-ELL inhibits RNA pol II initiation. It is not clear how these two discrete functions of ELL are regulated. Here we report that mini-chromosome maintenance 2 (MCM2) binds to EAP30 and show that MCM2 competes with ELL for binding to EAP30 thus potentially modulating the stability of Holo-ELL.

Structured summary

MINT-7277033: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with RPB1 (uniprotkb:P24928) by anti tag coimmunoprecipitation (MI:0007)MINT-7277085: EAP30 (uniprotkb:Q96H20) binds (MI:0407) to ELL (uniprotkb:P55199) by pull down (MI:0096)MINT-7277072: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with ELL (uniprotkb:P55199) by anti tag coimmunoprecipitation (MI:0007)MINT-7277100: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with ELL (uniprotkb:P55199) by competition binding (MI:0405)MINT-7277153: MCM2 (uniprotkb:P49736) binds (MI:0407) to ELL (uniprotkb:P55199) by pull down (MI:0096)MINT-7276989: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with MCM2 (uniprotkb:P49736) by pull down (MI:0096)MINT-7277005: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with RPB1 (uniprotkb:P24928) by pull down (MI:0096)MINT-7276960, MINT-7277168: MCM2 (uniprotkb:P49736) physically interacts (MI:0915) with EAP30 (uniprotkb:Q96H20) by two hybrid (MI:0018)MINT-7276971, MINT-7277121, MINT-7277137: MCM2 (uniprotkb:P49736) binds (MI:0407) to EAP30 (uniprotkb:Q96H20) by pull down (MI:0096)MINT-7277018, MINT-7277061: EAP30 (uniprotkb:Q96H20) physically interacts (MI:0915) with MCM2 (uniprotkb:P49736) by anti tag coimmunoprecipitation (MI:0007)     

Establishment of a new hypotrichous genus,Heterotachysoma n. gen. and notes on the morphogenesis of Hemigastrostyla enigmatica (Ciliophora,Hypotrichia)

A marine hypotrich ciliate, Heterotachysoma multinucleatum (Gong and Choi, 2007) n. comb., found in coastal waters near Qingdao, China, was investigated. Heterotachysoma multinucleatum is characterized by its dorsal ciliature arranged in Gonostomum-pattern. Additionally, a new genus, Heterotachysoma n. gen., is established which is mainly characterized by: 18-cirri pattern; flexible body; three dorsal kineties with no dorsomarginal kineties nor kinety fragmentation; one right and one left row of marginal cirri; caudal cirri absent. The genus Tachysoma is redefined, and three new combinations, T. multinucleatum, T. ovatum and T. dragescoi, are proposed. The morphogenesis of Hemigastrostyla enigmatica (Dragesco and Dragesco-Kernéis, 1986) Song and Wilbert, 1997, is also described. Compared with that of its congeners, the differences are mainly in the dorsal ciliature: (1) the dorsal kinety anlagen are formed de novo in H. enigmatica (vs. intrakinetally in H. paraenigmatica and H. elongata); (2) the dorsal kineties anlagen develop in secondary mode in H. enigmatica (vs. primary mode in H. paraenigmatica); (3) the kinetal fragment anterior to the right marginal row in both filial product is absent in both H. enigmatica and H. elongata (vs. present in H. paraenigmatica). These findings suggest that morphogenesis is not uniform among members of the genus Hemigastrostyla.