Differential responses of Nile tilapia (Oreochromis niloticus) to fin clip wounding and related stress: perspectives

The debate around fish welfare is intensifying in The Netherlands. As a result, more research is carried out to enhance knowledge on fish welfare in aquaculture. Detailed information is lacking on how production procedures causing discomfort to the fish may affect welfare. That fish must perceive adversive stimuli follows from the fact that nociceptive mechanisms similar to those in mammals are present in fish. However, whether and how nociceptive stimuli are perceived or interpreted by a fish is a far more difficult question that requires significantly more effort from fundamental research, both neurophysiological and behavioural studies, than now available. The study presented in this report aimed to define selected readout for the acute response to a supposedly painful stimulus: a standardised tailfin clip to a common carp. In conclusion, we succeeded to demonstrate differential, stronger responses to a presumed painful stimulus than to the handling stress per se associated with the administration of the pain stimulus. These parameters will be the focus of future research within this welfare project

Grounding the past : the praxis of participatory archaeology in the Mixteca Alta, Oaxaca, Mexico

"Grounding the Past" addresses archaeological field praxis and its role in the political present of Santiago Tilantongo and Santiago Apoala, two communities in the Mixteca Alta region of Oaxaca, Mexico. Efforts to involve local stakeholder communities in archaeology have become an important issue worldwide. In this study, Alexander Geurds argues that projects of participatory archaeology, many of which go under the heading of ‘community archaeology’, cannot dispense with reflexive analysis of field praxis, if they are to avoid idealized and thus untenable narratives of harmonious local collaboration. Past and present archaeological praxis often carries negative connotations in the Mixteca Alta, because archaeological projects have failed to recognize conflicting interests and issues of representation of local and non-local parties. Geurds reviews the constitutive elements of their partnerships, such as official meetings, public presentations and conferences, where the involved local and non-local parties produce conflicting agendas by creating and transforming power relations. He identifies and analyzes the attendant influences on participatory elements through the application of qualitative techniques derived from ethnography and social geography. The first part of the book follows an approach consistent with consistent with the regional archaeological tradition focused on materialist analysis of surface artefacts. Information derived from surface surveying and mapping receives special emphasis. The second part explores alternative means for embedding the production of historical knowledge into local perceptions of landscape and monuments. For this purpose, oral history and in particular knowledge of local placenames is focused on.LEI Universiteit LeidenResearch School CNWS for Asian, African and Amerindian StudiesLanguage Use in Past and Presen

Review of Anderson, B.; Rojas, F. (2017) Antiquarianisms: contact, conflict, comparison

Archaeology of the America

Heuvels bergen.

Archaeology of indigenous Americ

The Valley of Juigalpa, Mayales River Subbasin micro region (Chontales, Nicaragua) Date List II

Archaeology of the America

Circular Reasoning in Mound Building? Large-scale Planned Construction Patterns at the Aguas Buenas Site (A.D. 400–1525).

Archaeology of the America

The similarity trap: Engineering the Greater-Caribbean, A perspective from the Isthmo-Colombian Area

Mesoamerican and Andean Archaeolog

Geochemical and petrographic assessment of clay outcrops and archaeological ceramics from the pre-Hispanic site of Aguas Buenas (cal 400–1250 CE), central Nicaragua

This research characterizes and reconstructs clay procurement and production practices through the integration of in-situ portable XRF and petrographic analysis on ancient ceramics and clay materials recovered from the Mayales river subbasin (central Nicaragua). A particular choice for this study was the largest and arguably most significant archaeological site in the area, Aguas Buenas (cal 400–1250 CE), a pre-Hispanic indigenous agglomeration consisting of 371 human-made mounds of various shapes arranged in geometric patterns. Microanalytical approaches were applied to reconstruct the use of raw mineral resources in the production of ubiquitous pottery materials found at this site and in its immediate surroundings. The resulting compositional analysis produced geochemical and mineralogical data allowing for the characterisation of distinct, geologically-based compositional groups throughout the valley, improving on the limited geological data resolution previously available. The integrated microscopic and compositional analysis (through p-XRF) of archaeological pottery materials and raw clay samples, generates a number of hypotheses and insights about the nature of the Aguas Buenas site, and its role as a shared space amongst groups living in the Mayales river Subbasin. Additionally, this study provides a solid research framework of investigation that can be employed for more detailed and extensive future studies on pre-Hispanic human occupation in this research area or elsewhere