Disability and Reproduction

No abstract available

Stress affects reproduction

A short account of how stress interferes with reproduction in farmed fish

Ethnicity and Reproduction

No abstract available

Sexuality and Reproduction

No abstract available

Reproduction and respiration of a climate change indicator species: effect of temperature and variable food in the copepod Centropages chierchiae

The abundance of the calanoid copepod Centropages chierchiae has increased at the northern limits of its distribution in recent decades, mainly due to oceanic climate forcing, suggesting this as a key species in monitoring climate change. Laboratory experiments were conducted to study the combined effect of temperature, food type and concentration on the egg production rate (EPR) and hatching success (HS) of C. chierchiae. Females were fed on two monoalgal diets (Gymnodinium sp. and Phaeodactylum tricornutum) at two food concentrations and at three different temperatures (13, 19, 24C). Respiration rates of both genders were measured at four different temperatures (8, 13, 19, 24C). EPR was significantly different between temperatures and food concentrations, the maximum EPR being attained when the copepods were exposed to high food levels and at 19C. Prey type significantly influenced EPR; feeding on P. tricornutum resulted in higher egg production than Gymnodinium sp. HS was significantly lower at 13C than at 19 and 24C and higher with Gymnodinium sp. Respiration rates were sex independent and increased exponentially with temperature. To maintain basal metabolism, the minimum food intake of P. tricornutum ranged between 0.4 and 1.8 g C and for Gymnodinium sp. between 0.03 and 0.13 g C. Food intake was always higher than the metabolic demands, except for the highest temperature tested (24C). The present results confirm the sensitivity of C. chierchiae to temperature variations and may help in understanding the successful expansion of its distribution towards northern latitudes.Portuguese Science and Technology Foundation (FCT) [PTDC/MAR/098643/2008, PTDC/MAR/111304/2009, PTDC/MAR/0908066/2008]; FCT [SFRH/BD/28198/2006]; [SFRH/BPD/38332/2007

Depletion and social reproduction

Much work has been done on the unaccounted contribution of social reproductive work to national economies. What has been less studied is the consequence of this neglect for individuals, households and communities engaged in social reproduction. Where these consequences have been recognised, it has largely been in the context of economic crises. So, for example, Elson has pointed out in her analysis of gendered impact of crises, "If too much pressure is put upon the domestic sector to provide unpaid care work to make up for deficiencies elsewhere, the result may be a depletion of human capabilities, ...To maintain and enhance human capabilities, the domestic sector needs adequate inputs from all other sectors. It cannot be treated as a bottomless well, able to provide the care needed regardless of the resources it gets from the other sectors" (2000:28). In this paper we take this insight and develop it in the context of the everyday political economy. We argue that the inputs into social reproduction are less than the outputs generated by it. We term this difference depletion

Disembodiment: Reproduction, Transcription, And Trace

This article poses the question, what is so great about the body? Recent scholarship has emphasized the concept of an embodied cognition and reminded us of the significance of embodiment in musical performance. Yet, vital as these observations may be, they offer only a limited view of what ‘touch’ can mean. Following the semiotic notion of the index as a sign with a real connection to its object, writers and artists such as Friedrich Kittler, Ai Weiwei, Kenneth Goldsmith and Nicolas Donin have reflected on how the reproductions of the gramophone needle, the calligrapher's brush, the blogger's keyboard, and the programmer's code can trace meaningful points of contact. Examples from my own practice illustrate some of the many possible ways that digital traces can be touching