Methods used for the killing and preservation of blowfly larvae, and their effect on post-mortem larval length

A record of the length of the largest larvae collected from a corpse can be used to estimate the age of the oldest larvae present and, therefore, give an estimate of minimum time since death. Consequently, factors that affect post-mortem larval length will impact on any estimate of PMI based on it. Methods used to kill and preserve larvae are known to affect post-mortem length. This study looks at the effects of different preservatives, and variations in the protocol used for killing larvae by immersion in a hot water bath = [hot water killed; HWK], on the length of dead larvae of two common blowfly species. Post-feeding third instar Calliphora vomitoria and Lucilia sericata larvae were either HWK in boiling water and then placed in 80% ethanol or 10% formaldehyde solution, or placed live into the preservatives. For both species, choice of preservative and method of killing significantly affected post-mortem length. There were significant interspecific differences in their response to identical methods of killing and preservation. Additional experiments were carried out where C. vomitoria larvae were HWK in water at 80 and 100 degrees C for 1, 30, 60 and 90 s duration. Both temperature and duration significantly affected post-mortem length. Maximum length was attained after at least 60 s immersion. The amount of post-mortem decomposition that occurred after the larvae were placed in preservative could be greatly reduced by increasing the duration of immersion and/or increasing the water temperature. For the HWK larvae, it was possible to record their length immediately after death and before they had been placed in preservative. This data revealed that where 80% ethanol was used as a preservative the larvae expanded in the preservative. The timing of this expansion was investigated with a sample of C. vomitoria, HWK at 100 degrees C for 30 s and recording post-mortem length immediately after death and again after 3, 6, 9, 12, 24, 27, 30 and 33 h storage in 80% ethanol. Maximum length was recorded after 12 h storage and the rate of expansion was highest during the first 3 h in this preservative. After long-term storage (290 days), larvae killed and preserved in the same way were on average 0.7% longer than immediately after death and 0.6% (0.11 mm) smaller than when last measured (after 28 days storage).     

‘Walking in two worlds’: A qualitative review of income management in Cape York

The Cape York Welfare Reform (CYWR) initiative aims to reduce ‘passive dependence’ on welfare and restore ‘positive social norms’ to revitalise cultural and social networks and support economic engagement in Indigenous communities in the Cape York Region of Australia. Critics of the initiative and, in particular, its income management (IM) policies have associated it with a broader neoliberal reform agenda that delineates social ‘problems’ from their historical and structural context. This paper discusses key qualitative findings from a strategic review of CYWR, paying particular attention to the ways in which Cape York IM (CYIM) straddles both Indigenous and settler social norms, while perpetuating neoliberal conceptualisations of welfare ‘dependency’. We situate these findings within the existing literature on Australia's other IM models and also consider them in relation to subsequent government responses to the review and associated policies. We argue that CYIM represents a unique initiative, the subtle nuances of which have been largely ignored or misunderstood by critics. Further, we conclude that any extension or revision of this initiative should be considered with respect to deep and wide-ranging consultation of the Indigenous communities subject to CYWR. However, such consultation has not been the standard practice in Australian contexts.     

Salience‐Based Congruence Between Parties & their Voters: The Swiss Case

Policy congruence between parties and their voters is a prerequisite for the latter's representation. Related research typically focuses on the left‐right dimension. We contribute to this literature by conceiving the alignment between citizens and political elites as congruence on issues that individual citizens consider important (salience‐based congruence). Furthermore, we approach salience from the citizen's perspective and measure it at the individual level. Based on data from the Swiss Election Study (2007), we demonstrate that the assessment of party representation changes once we take salience into account. Policy congruence on salient issues is high and niche parties perform better than mainstream parties. Our arguments and findings about the role personal issue salience plays at the individual and party levels have important repercussions for contemporary debates on representation and policy congruence.     

The ‘tenure guidelines’ as a tool for democratising land and resource control in Latin America

Abstract

The current configuration of global land politics – who gets what land, how, how much, why and with what implications in urban and rural spaces in the Global South and North – brings disparate social groups, governments and social movements with different sectoral and class interests into the issue of natural resource politics. Governance instruments must be able to capture the ‘political moment’ marked by the increasing intersection of issues and state and social forces that mobilise around these. This paper looks at whether and how the Voluntary Guidelines on Responsible Governance of Tenure of Land, Fisheries and Forests in the Context of National Food Security (also known as the TGs) passed in 2012 in the United Nations Committee for Food Security (CFS) can contribute to democratising resource politics today. This work puts forward some initial ideas about how systematic research into the TGs can be done more meaningfully.     

Perpetuating myths of women as false complainants in rape cases in India: culture V. The law

ABSTRACT

Despite public outrage over our global “rape culture,” sexual offences continue to be characterised by low levels of reporting, prosecution, and conviction in many countries. Attrition rates for sexual assault internationally, although varying in pattern, are consistently high. As a signatory to the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW) and the Declaration on the Elimination of Violence against Women (DEVAW), the Indian Government acknowledges the need to afford better protection to victims of gender violence. Assessing the effect of rape law reform in India, using crime statistics and a survey of recent judgments from the Delhi District Courts, the author argues that the legislature has failed systematically to address the many injustices experienced by women who allege rape. The Indian Parliament responding to the moral panic generated by the Delhi gang rape case with knee-jerk reforms, focused mainly on increasing penalties, maintaining an outmoded view of rape as a crime against morality rather than as a violation of gender rights and human rights. By closely investigating the sociocultural context in which sexual crimes against women occur in India, the author reveals that India’s “cultural” arguments for rejecting further reform (such as repeal of the marital rape immunity) are merely entrenched gender biases, bearing strong parallels to nineteenth century English common law perceptions of women who allege rape as a class of false complainants.     

Contrast Enhancement of Bite Mark Images Using the Grayscale Mixer in ACR in Photoshop®

Enhanced images may improve bite mark edge definition, assisting forensic analysis. Current contrast enhancement involves color extraction, viewing layered images by channel. A novel technique, producing a single enhanced image using the grayscale mix panel within Adobe Camera Raw^®, has been developed and assessed here, allowing adjustments of multiple color channels simultaneously. Stage 1 measured RGB values in 72 versions of a color chart image; eight sliders in Photoshop^® were adjusted at 25% intervals, all corresponding colors affected. Stage 2 used a bite mark image, and found only red, orange, and yellow sliders had discernable effects. Stage 3 assessed modality preference between color, grayscale, and enhanced images; on average, the 22 survey participants chose the enhanced image as better defined for nine out of 10 bite marks. The study has shown potential benefits for this new technique. However, further research is needed before use in the analysis of bite marks.