Allozyme evidence for a new species of freshwater crayfish of the genus Cherax Erichson (Decapoda : Parastacidae) from the south-west of Western Australia

The marron, Cherax tenuimanus (Smith), is one of the most easily recognisable members of the freshwater crayfish genus Cherax. Since its description in 1912, the taxonomy of the species has not been in dispute, but recent genetic studies have demonstrated that the species is not homogenous and consists of two genetically distinct forms. One of these forms is widespread and exploited via aquaculture and the other is restricted to a single river system, the Margaret River. This paper presents allozyme data, collected over a 19-year period, which documents the introduction of the widespread form into the Margaret River and the subsequent reproductive interactions between the two forms. These data indicate minimal interbreeding between the two forms of marron and so justify their recognition as distinct species. As the original description of the marron was based on specimens collected from the Margaret River, the form native to this river retains the name C. tenuimanus and a new species, Cherax cainii Austin is described for the common, widespread form of marron. An additional outcome of this study is that C. tenuimanus has been rapidly displaced by the introduced C. cainii within the Margaret River. Consequently, urgent conservation measures are required to protect C. tenuimanus and prevent its possible extinction.

Is domestic violence learned? The contribution of five forms of child maltreatment to men's violence and adjustment

On the basis of a learning-theory approach to the intergenerational transmission of violence, researchers have focused almost exclusively on violent men's childhood experiences of physical abuse and witnessing family violence. Little consideration has been given to the coexistence of other forms of child maltreatment or the role of family dysfunction in contributing to violence. This study shows the relationships between the level of child maltreatment (physical abuse, psychological maltreatment, sexual abuse, neglect, and witnessing family violence), childhood family characteristics, current alcohol abuse, trauma symptomatology, and the level of physical and psychological spouse abuse perpetrated by 36 men with a history of perpetrating domestic violence who had attended counseling. As hypothesized, a high degree of overlap between risk factors was found. Child maltreatment, low family cohesion and adaptability, and alcohol abuse was significantly associated with frequency of physical spouse abuse and trauma symptomatology scores, but not psychological spouse abuse. Rather than physical abuse or witnessing family violence, childhood neglect uniquely predicted the level of physical spouse abuse. Witnessing family violence (but not physical abuse) was found to have a unique association with psychological spouse abuse and trauma symptomatology. These results present a challenge to the understanding of domestic violence obtained from learning theory.

New species of the Bryozoan Genera Batopora and Lacrimula (Batoporidae) from Australia

Examination of samples of bryozoans from the south- eastern slope sediments of Australia ("Franklin" SLOPE Stations 6, 7), has revealed the presence of many specimens of several genera with species which have minute, rooted colony forms. Among these are new species of the genera Batopora Reuss (B. problematica) and Lacrimula Cook (L. affinis). The structure of colonies is briefly described. The family Batoporidae is considered to contain only these two genera, although they have relationships with the discoidal genus Orbitulipora, and similarities in colony form to the genera assigned to the Conescharellinidae.

Organizing forms in change management: the role of structures, process and boundaries in a longitudinal case analysis

This paper examines change management at William Angliss Institute of Technical and Further Education (TAFE) against the three organizational dimensions of structures, processes and boundaries identified by the INNFORM Study. Its experience confirms that even when an organization adopts a systemic approach and implements change across each design dimension, optimal performance benefits depend on mutually reinforcing and complementary changes. Furthermore, improvement to processes, particularly communications and human resources practices, plays a pivotal role, as complementary change across all dimensions depends ultimately on the contribution and commitment of organization members. Case findings also highlight the need for ambidextrous forms of organizing that combine 'controllability' with 'responsiveness'. The conceptual notion of organizing dualities has been employed to provide a practical interpretation of the ostensibly competing imperatives implied by ambidexterity. This case explores the dualities that can be demonstrated for the INNFORM triumvirate of structures, processes and boundaries. The dualities interpretation emphasizes an acceptance of texture and the simultaneous presence of what are conventionally viewed as incompatible organizing forms. This was considered a useful conceptual vehicle in the analysis of a case study covering nearly ten years of serious change interventions, where one theoretical view can be misleading in understanding the subtleties and complexities of the actual changes that occurred.

Studio enquiry and new frontiers of research

Given the growing complexity of human existence, there is a need for new ways of representing ideas and of illuminating the world and domains of knowledge. A growing recognition of the limits of traditional ways of representing the world has given rise to a search for alternative approaches to transform and represent the contents of consciousness or what can be known of lived experience. Researchers are recognising that scientific inquiry is just one type of research and that ‘research is not merely a species of social science’ (Eisner 1997: 261). Dissatisfaction with positivism and behaviourism as reductive modes of knowing has also come from within the science disciplines themselves. In his work entitled, The Discontinuous Universe, (1972) Werner Heisenberg states that the knowledge of science is applicable only to limited realms of experience and the scientific method is but a single method for understanding the world. Moreover, the notion of scientifically-based knowledge as statements of ultimate truth contains an inner contradiction since ‘the employment of this procedure changes and transforms its object’ (Heisenberg 1972: 189). The work of Heisenberg and others including: Lincoln and Denzin (2003), Schwandt, (2001) and Schon (1983) reveals that knowledge is relational and that different models of inquiry will yield different forms of knowledge.

Molecular Genetic Evidence for a New Species of Bream of the Genus Acanthopagrus Peters (Perciformes: Sparidae)

Fishes of the genus Acanthopagrus are found throughout the coastal waters of Asia and Australia with several species being of commercial significance. In this study, genetic comparisons are made between widely disjunct populations of Acanthopagrus australis (Günther) from Australian and Taiwanese waters and among samples of A. butcheri (Munro), A. berda, (Forskal), A schlegeli (Day) and A. latus (Houttuyn) using mitochondrial DNA sequences obtained from the control region. The mean interspecific pairwise sequence divergence for all species is 17%, while the divergence between A. australis from Australia and that of Taiwan is slightly larger at 18%. These values are considerably higher than those found for intraspecific control region comparisons in some fish species. Phylogenetic analyses indicate that A. australis from Australia is more closely related to the Australian species A. butcheri than to A. australis from Taiwan. These findings suggest that the northern and southern hemisphere forms of A. australis are not monophyletic, with the former possibly representing a new undescribed species of Acanthopagrus.

The politics of resistance to workplace cultural diversity education for health service providers : an Australian study

This qualitative study has as its focus an exploration of health service providers' perceptions and experiences of the processes and implications of delivering workplace cultural diversity education for staff. Data were obtained from conducting in-depth individual and focus group interviews with a purposeful sample of 137 healthcare professionals, recruited from over 17 different organizational sites. Participants included cultural diversity educators, ethnic liaison officers, health service managers, nurses, health interpreters, allied health professionals, and community-based ethnic welfare organization personnel working in or with select metropolitan health services in Victoria, Australia. Analysis of the data revealed that workplace cultural diversity education in healthcare is a significant site of resistance and struggle. 'Resistance' was expressed in several forms including: the problematization of resources and staff availability to attend cultural diversity education forums; indifferent failure to recognize cultural imperatives in healthcare; deliberate refusal to recognize cultural imperatives in healthcare; selective recognition of cultural imperatives in healthcare ('facts sheets' only); and the angry rejection of cultural imperatives in healthcare. 'Struggle', in turn, largely involved cultural diversity educators having to constantly 'cajole and convince' (and even manipulate) staff to attend cultural diversity education forums and using a 'velvet glove and iron fist' approach to teaching staff who remained resolute in their resistance when participating in educational forums. An important implication of this study is that the politics of workplace cultural diversity education - and the 'politics of resistance' to such programs - need to be better recognized and understood if the status quo is to be successfully challenged and changed. The need for critical debate and further comparative research on the subject are also highlighted.

New way of seeing things : Ernst Troeltsch and the theological agenda

The aim of this thesis, as set out in the Introduction, is to assess the (seminal) significance of Troeltsch as one who set the agenda for twentieth century theology, particularly modern sociopolitical theology, and whose thought still has a special relevance. The first main chapter deals with the implications of the philosophy of history for theology. The Protestant theological orthodoxy of Troeltsch's time was essential ahistorical: he thought this to be untenable. Theology had to come to terms with the historical method, which was ‘a leaven which transforms everything, and finally bursts all previous forms of theological method.’ This chapter discusses Troeltsch's work concerning the principles, the cultural matrix, and the philosophy of history. The second main chapter examines another main concern of Troeltsch, namely, the status of Christianity vis-a-vis other religions. The background to this was the increasing awareness of the existence of other religions and the question of relativity and universality which this posed. Troeltschfs major response was Die Absolutheit des Christentums in which the ideas of essence, Europeanism, and absolutism were discussed, The third, and longest, chapter looks at the impact of social theory on theology. Sociology gave Troeltsch ‘a new way of seeing things’, and this new perspective is to be seen pre-eminently in The Social Teaching of the Christian Churches. Discussion of this centres on the three main concepts that Troeltsch delineated, compromise, natural law, and church/sect typology.

Blockbusters for the youtube generation : a new product of convergence culture

While scholars have paid much attention to YouTube in a Web 2.0 environment, the YouTube blockbuster is yet to be discussed as part of this convergence culture. It differs from transmedia storytelling in that no single company owns or controls the characters or concepts. Once users have elevated videos with rich narrative qualities to the heights of fame within YouTube and other virtual social networks, they are taken from the YouTube archive by global commercial media and given new exchange values in traditional media forms such as books, films, television shows and ancillary products, using fragmented classical narrative techniques to do so. This paper traces the history of the blockbuster as a way of large commercial media adapting to social and technological change after World War II, to its refinements in the 1970s to cater for younger audiences and changes in the media landscape, to its most recent incarnation in YouTube. We argue that the economic and cultural values of the blockbuster are being transformed and refigured by the new form it has begun to take within convergence culture.

Patterns of resistance in managing assessment change

Achieving change in assessment practices in higher education is difficult. One of the reasons for this is resistance among those responsible for teaching and assessing. This paper seeks to explore this resistance through an analysis of staff dialogue during a major attempt to change the assessment practices at one institution. An institution-wide intervention to pilot new assessment practices was initiated, involving 35 academics across 12 departments. This paper reports on patterns emerging in dialogue about this among academics, and between academics and educational development personnel. Findings suggest that resistance is not a unitary concept, but that different stakeholders under varied circumstances express it differently; and that resistance to assessment change is particularly resilient. Implications are discussed in terms of relevance to current theories of higher education assessment and learning change management, as well as the practical considerations of attempts by institutions to engage in assessment change. © 2013 © 2013 Taylor & Francis.

A new vision of the origin and the oocyte development in the Ostariophysi applied to Gymnotus sylvius (Teleostei: Gymnotiformes)

Tendo por base os novos conhecimentos oriundos de recentes estudos com Perciformes marinho, a origem e o desenvolvimento dos oócitos no Ostariophysi Gymnotus sylvius são aqui descritos. da mesma maneira que ocorre nos Perciformes, em Gymnotus sylvius as oogônias são encontradas no epitélio germinativo que margeia as lamelas ovígeras. No início da foliculogênese, a proliferação das oogônias e sua entrada em meiose dão origem a ninhos de células germinativas que se projetam em direção ao estroma ovariano, a partir do epitélio germinativo. Os ninhos e o epitélio germinativo são suportados pela mesma membrana basal que os separa do estroma. Coincidindo com a paralisação da meiose os oócitos, presentes nos ninhos, são separados uns dos outros por processos citoplasmáticos das células pré-foliculares. As células pré-foliculares derivam do epitélio germinativo sendo, portanto, inicialmente células epiteliais. Durante a foliculogênese, ao mesmo tempo em que envolvem os oócitos individualizando-os, as células pré-foliculares sintetizam a membrana basal ao seu redor. Os oócitos entram em crescimento primário ainda dentro dos ninhos. Ao término da foliculogênese, o oócito e as células foliculares que compõem o folículo são circundados pela membrana basal. O folículo permanece conectado ao epitélio germinativo uma vez que ambos compartilham uma porção comum da membrana basal. Células oriundas do estroma circundam o folículo ovariano exceto na região de compartilhamento da membrana basal formando a teca. O folículo, a membrana basal e a teca formam o complexo folicular. O desenvolvimento do oócito ocorre dentro do complexo folicular e compreende os estágios de crescimento primário e secundário, maturação e ovulação. Os alvéolos corticais surgem no ooplasma momentos antes do início do crescimento secundário ou estágio vitelogênico que tem início com a deposição de vitelo, progride até o oócito esteja completamente desenvolvido e o ooplasma preenchido pelos glóbulos de vitelo. A maturação é caracterizada pela migração do núcleo ou vesícula germinativa, pela quebra da vesícula germinativa, ou seja, pela fragmentação do envoltório nuclear e, retomada da meiose. Na ovulação o ovo é liberado do complexo folicular para o lúmen ovariano. em comparação com os Perciformes marinhos com ovos pelágicos, o desenvolvimento oocitário em Gymnotus sylvius tem menos etapas dentro dos estágios de desenvolvimento, sendo as duas mais notáveis delas as ausências da formação das gotas de lipídio durante os crescimentos primário e secundário (e a consequente fusão das gotas para formar um único glóbulo de lipídio durante a maturação) e, a hidrólise do vitelo antecedendo a ovulação.

Neuroglobin and cytoglobin: two new members of globin family

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

NORDSIECK FORMS OF STIFFLY-STABLE ADAMS-TYPE CYCLIC METHODS THAT ARE INSENSITIVE TO STEP-SIZE CHANGES

In this paper we determine a matrix S and a vector l for stiffly-stable Adams-type cyclic methods that are insensitive to step size changes by using the definition of equivalent methods, (see, e.g. [l]), in the Nordsieck notation. The elements S and l, written in a parametric form, permit us to represent in Nordsieck form the methods that were constructed in [7] and the new methods that satisfy the above properties.

Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard

A trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that did not agree with the levels obtained by chemical analysis of the soil. Physical, chemical, mineralogic and morphologic analyses were performed on the red yellow latosol to identify minerals able to supply potassium, with emphasis on the fact that guava trees have a considerably widespread root system. The results obtained confirmed the presence of minerals in this soil that can supply potassium to the trees through weathering. Feldspars were identified in the silt fraction and micas in the clay fraction by X-ray diffractometry. The determination of total potassium revealed that the silt fraction of the soil had the largest absolute amounts of potassium, followed by clay. However, in view of its greater content, clay was the fraction that contributed most to the total amounts of potassium detected.

Inhibition between Salmonella-strains - A new aspect of Salmonellosis control in poultry

Freshly hatched chickens show a very high susceptibility to Salmonella infections and control measures are therefore frequently focused on the period shortly after hatching. Experimental investigations using one strain against itself, differentiated by different antibiotic resistance markers, have shown that colonisation with Salmonella prevents the establishment of subsequently inoculated challenge organisms in the chicken gut. The inhibition effect lasts for several days and is detectable even when a challenge dose of 10(8) organisms is used. It is independent of the breed of bird. Chickens colonised with Salmonella shed a subsequently inoculated challenge strain with significant lower numbers for several weeks than do non colonised control birds. The phenomenon is strain specific but not serovarspecific as has been shown in investigations using different strains of the same and other serovars for colonisation and challenge. The phenomenon shows a large variability between strains. Using other Enterobacteriaceae strains comparable inhibition against Salmonella was not observed.One important topic for further investigation is the capability of Salmonella live Vaccines given orally to establish a protection effect, based on the inhibition phenomenon in the first few days of live, developing into a long-lasting immunity when the birds reach immunological maturity.