Sexing little penguins eudyptula minor using bill measurements

In Little Penguins Eudyptula minor there are no reliable plumage or body size differences that can be used visually to distinguish the sex of individuals. However, sexual dimorphism of morphometric measures has been noted, with males always being a little larger than females. In this study, differences between E. minor sexes at eight colonies in south-eastern Australia were determined statistically via discriminant function analysis (DFA) and through the utilization of DNA-based techniques developed for non-ratite birds. The DFA correctly determined gender in 91.1% of cases and molecular methods were 100% accurate. Our DFA success rate of classification is similar to that previously published for Little Penguins in Victoria. In this study statistically significant differences in mean bill depths and lengths were found between Little Penguin colonies at St Kilda, Phillip Island and Gabo Island, compared to colonies at Kangaroo Island, Granite Island, Middle Island and London Bridge. As birds in eastern populations (St Kilda, Phillip Island, Gabo Island) exhibit statistically significantly smaller beaks (bill depth and bill length), separate discriminant functions were investigated for each phenotypically distinct geo-spatial cohort. Interestingly, cluster analysis for bill length identified three groups: western (Kangaroo Island and Granite Island), eastern (St Kilda, Phillip Island and Middle Island) and the London Bridge Little Penguin colony, which constituted a separate group. We conclude that while there is a slight increase in DF power for colonies west of Cape Otway and for some specific colonies, colony-specific DFA is not required to identify the sex of Little Penguins in south-eastern Australia.

Editorial

In the way that submissions to journals sometimes observe a strange synchronicity, this issue commences with three essays focusing on film. Relatively little work has been carried out on the ideologies of films designed specifically for children or of that large body of films regarded as family viewing, and which cater both to child viewers and also to the adults who accompany them. The three ‘film’ essays we present here apply a variety of theoretical and methodological frames to films which in the main fit within the second of these categories—family films.

We're not nice little old ladies

Presents information on the multimedia performance 'We're Not Nice Little Old Ladies,' which explores the views of old women on aging. Overview of the research project Stories of Ageing; Lessons for lifelong learning.

From little things, big things grow

Claire Jennings and Karen Stagnitti report on an early intervention project that provides the opportunity for children from vulnerable families in country Victoria to learn the essential skills of listening, concentration and curiosity.

Little big boys: a study of peers, power and pedagogy

In this paper we will argue that the dominant discourse on young males 'at risk' focuses too narrowly on the adolescent and young adult years. There is a tendency to individualise, both practically and theoretically, behaviours that are thought to substantiate the application of this category. Against this backdrop, we report on a study undertaken with a group of 6-8 year old boys in a primary school setting. The research was compiled around the interactions of an 'affinity group' of five young males across a six-month period. Prominent in our discussion of this data will be, the contextual nature of behaviour and identity, the influential role of the peer group, and the desire to 'other' in defining the self. We conclude by considering some of the implications this work has for the way mainstream schooling is structured and practiced.

Little con

Performed on the last Friday of every month (December and January excluded) 2005 – at a variety of venues in Melbourne, including the Cecil Street Studio and the Dancehouse. Founders and regular participants: Shaun McLeod, Paul Romano, Ann-maree Ellis, Dianne Reid, Grace Walpole and Joseph Lehrer. National and international guest artists include: Rosalind Crisp (Australia & France), Andrew Morrish (Australia and France), Tony Osborne (Sydney), Jane McKernan (Sydney) and many other Melbourne based performers.

'I get by with a little help from my friends' : adults with intellectual disability discuss loneliness

Background This study explored 'loneliness' as experienced by adults with intellectual disability, with 'intermittent' to 'limited' support needs.

Method A measure of loneliness was piloted, and qualitative techniques used to develop a greater understanding of the participants' experience.

Results The Loneliness Scale proved valid and reliable and the participants reported loneliness in ways comparable with the general population.

Conclusions The findings demonstrate the effectiveness of combining quantitative and qualitative techniques to enhance understanding of people's perspective when developing support systems to promote their quality of life. Based on participant perspectives, recommendations are made concerning the issues and types of support families and professionals could consider when seeking to assist people with intellectual disability address loneliness. Further investigation of the effects of differing educational and vocational opportunities on people's post-school social networks appears warranted.

Foraging behaviour and habitat selection of the little penguin Eudyptula minor during early chick rearing in Bass Strait, Australia

Knowledge of the foraging areas of top marine predators and the factors influencing them is central to understanding how their populations respond to environmental variability. While there is a large body of literature documenting the association of air-breathing marine vertebrates with areas of high marine productivity, there is relatively little information for species restricted to near-shore or continental-shelf areas. Differences in foraging range and diving behaviour of the little penguin Eudyptula minor were examined from 3 breeding colonies (Rabbit Island, Kanowna Island and Phillip Island) in central northern Bass Strait, southeast Australia, during the chick-guard stage using electronic tags (platform terminal transmitters, PTTs, and time-depth recorders, TDRs). Although there were large overall differences between individuals, the mean maximum foraging range (16.9 to 19.8 km) and mean total distance travelled (41.8 to 48.0 km) were similar between the 3 colonies, despite different bathymetric environments. Individuals from all 3 colonies selected foraging habitats within a narrow sea surface temperature (SST) range (16.0 to 16.4°C). While there were significant differences in mean dive depths (5.4 to 10.9 m) and mean durations (13.2 to 28.6 s) between the different colonies, the mean diving effort (vertical distance travelled: 936.3 to 964.3 m h–1) was similar. These findings suggest little penguins from the 3 colonies employ relatively similar foraging efforts yet are plastic in their foraging behaviours.

'The witness who saw, /He left little doubt' : a comparative consideration of expert testimony in mental disability law cases in common and civil law systems

The question of how courts assess expert evidence - especially when mental disability is an issue - raises the corollary question of whether courts adequately evaluate the content of the expert testimony or whether judicial decision making may be influenced by teleology (cherry picking evidence), pretextuality (accepting experts who distort evidence to achieve socially desirable aims), and/or sanism (allowing prejudicial and stereotyped evidence). Such threats occur despite professional standards in forensic psychology and other mental health disciplines that require ethical expert testimony. The result is expert testimony that, in many instances, is at best incompetent and at worst biased. The paper details threats to competent expert testimony in a comparative law context - in both the common law (involuntary civil commitment laws and risk assessment criminal laws) and, more briefly, civil law. We conclude that teleology, pretextuality, and sanism have an impact upon judicial decision making in both the common law and civil law. Finally, we speculate as to whether the new United Nations Convention on the Rights of Persons with Disabilities is likely to have any impact on practices in this area. Copyright © 2009 John Wiley & Sons, Ltd.

Range-wide phylogeography of the Little Penguin (Eudyptula minor): evidence of long-distance dispersal

The Little Penguin (Eudyptula minor), a colonial-nesting seabird that is widespread in New Zealand and southern Australia, has high dispersal potential but exhibits regional variation in morphology, coloration, and breeding phenology. We present a distribution-wide survey of mitochondrial DNA variation in the Little Penguin to document phylogeographic relationships and genetic structuring and to test for concordance with intraspecific taxonomy. Phylogeographic structuring was absent among Australian colonies (27 localities, 94 individuals), but the distribution of haplotypes among colonies was significantly nonrandom (ϕST = 0.110, P < 0.01). The Australian individuals exhibited close phylogenetic relationships with a subset of New Zealand birds (4 localities, 22 individuals), whereas the remaining New Zealand birds (20 localities, 106 individuals) were phylogenetically distinct, with ≥7% sequence divergence, and exhibited greater levels of genetic variation and geographic structuring (ϕST = 0.774, P < 0.05). These patterns are consistent with earlier suggestions of an origin in New Zealand followed by recent colonization of Australia and back-dispersal to New Zealand. Extinction and re-establishment processes may have been important factors in the development of genetic structuring across a range of spatiotemporal scales. The genetic data are consistent with suggestions that a single subspecies exists in Australia, but not with the subspecies distributions within New Zealand that have been suggested on the basis of morphology and coloration.

Too little exercise and too much sitting : inactivity physiology and the need for new recommendations on sedentary behaviour

Moderate-to vigorous-intensity physical activity has an established preventive role in cardiovascular disease, type 2 diabetes, obesity, and some cancers. However, recent epidemiologic evidence suggests that sitting time has deleterious cardiovascular and metabolic effects that are independent of whether adults meet physical activity guidelines. Evidence from “inactivity physiology” laboratory studies has identified unique mechanisms that are distinct from the biologic bases of exercising. Opportunities for sedentary behaviors are ubiquitous and are likely to increase with further innovations in technologies. We present a compelling selection of emerging evidence on the deleterious effects of sedentary behavior, as it is underpinned by the unique physiology of inactivity. It is time to consider excessive sitting a serious health hazard, with the potential for ultimately giving consideration to the inclusion of too much sitting (or too few breaks from sitting) in physical activity and health guidelines.