Search results for "Lander"

Glossing wind names in Low German in Salisbury? A newly discovered text in London, British Library, Cotton Vitellius A.xii

2018

It's an essay investigating a text on the names of the winds in ms London, British Library, Cotton Vitellius A.xii (s. xi), where both Latin and vernacular names are given. The text may ultimately derive from Einhard's Life of Charlemagne (ch. 29), but it appears as a self-contained text in the form of a Class Glossary. Although inserted in a manuscript copied in England at Salisbury, the vernacular words of the text are not in Old English. The essay makes a case for a possible connection with Flanders, with the text being one of the very rare surviving specimen of the Old Low Franconian language.

Characterizing the collective personality of ant societies: aggressive colonies do not abandon their home.

2011

Animal groups can show consistent behaviors or personalities just like solitary animals. We studied the collective behavior of Temnothorax nylanderi ant colonies, including consistency in behavior and correlations between different behavioral traits. We focused on four collective behaviors (aggression against intruders, nest relocation, removal of infected corpses and nest reconstruction) and also tested for links to the immune defense level of a colony and a fitness component (per-capita productivity). Behaviors leading to an increased exposure of ants to micro-parasites were expected to be positively associated with immune defense measures and indeed colonies that often relocated to other…

Ant Societies Buffer Individual-Level Effects of Parasite Infections

2012

Parasites decrease host fitness and can induce changes in host behavior, morphology, and physiology. When parasites exploit social insects, they influence not only infected individuals but also the society as a whole. Workers of the ant Temnothorax nylanderi are an intermediate host for the cestode Anomotaenia brevis. We studied a heavily parasitized population and found that, although parasite infection had strong and diverse consequences for individual workers, colony fitness remained unchanged. At the individual level, we uncovered differences among the three worker types, infected and healthy workers from parasitized colonies and healthy workers from nonparasitized colonies. Infected wo…

Parasite presence induces gene expression changes in an ant host related to immunity and longevity

2021

Most species are either parasites or exploited by parasites, making parasite&ndash

Étude comparative du futur simple dans un corpus littéraire finno-français

2008

Parasitism and queen presence interactively shape worker behaviour and fertility in an ant host

2019

Parasites with complex life cycles regularly alter host traits in their own interest. In social hosts, phenotypic alterations induced by parasites can also affect uninfected group members. The tapeworm Anomotaenia brevis uses Temnothorax nylanderi ants as intermediate hosts, reducing host activity and behavioural repertoire, but increasing life span. Uninfected nestmates are less active and less aggressive and suffer from higher mortality. Next to parasites, the social environment, such as the queen, influences worker behaviour, reproduction and longevity. Here, we studied how tapeworm parasitism interacts with the queen to affect the behaviour and reproductive potential of ant workers. We …

2021

Social insects are hosts of diverse parasites, but the influence of these parasites on phenotypic host traits is not yet well understood. Here, we tracked the survival of tapeworm-infected ant workers, their uninfected nest-mates and of ants from unparasitized colonies. Our multi-year study on the ant Temnothorax nylanderi, the intermediate host of the tapeworm Anomotaenia brevis, revealed a prolonged lifespan of infected workers compared with their uninfected peers. Intriguingly, their survival over 3 years did not differ from those of (uninfected) queens, whose lifespan can reach two decades. By contrast, uninfected workers from parasitized colonies suffered from increased mortality comp…

Exotic Ants (Hymenoptera, Formicidae) Invading Mediterranean Europe: a Brief Summary over About 200 Years of Documented Introductions

2019

Exotic ants have emerged as a relevant topic worldwide because of their remarkable impacts on native ecosystems and human activities. A first regional overview is given on the dozens of exotic ant species recorded in Mediterranean Europe since the end of the 19th century. About 39 exotic ant species, belonging to 17 genera and originating from 5 different biogeographical realms, are currently believed to be established in this region. The genera Nylanderia and Tetramorium are those hosting the larger proportion of species, while the Afrotropical realm is the prevalent source of taxa. According to the available data, France, Greece, Italy and Spain all host a high number of exotic species, w…

E.O.-based estimation of transpiration and crop water requirements for vineyards: a case study in southern Italy

2014

An efficient use of water for irrigation is a challenging task. From an agronomical point of view, it requires establishing the optimal amount of water to be supplied, at the correct time, based on phenological phase and water stress spatial distribution. Indeed, the knowledge of the actual water stress is essential for agronomic decisions, vineyards need to be managed to maintain a moderate water stress, thus allowing to optimize berries quality and quantity. Methods for quickly quantifying where, when and in what extent, vines begin to experience water stress are beneficial. Traditional point based methodologies, such those based on Scholander pressure chamber, even if well established ar…

De capitanías generales y tesorerías militares: el control financiero y sus dilemas en tiempos de Alejandro Farnesio (siglo XVI)

2015

A partir de fuentes inéditas, este artículo analiza qué tipo de medidas administrativas estableció la Corona en la década de 1580 para someter la gestión financiera de la capitanía general del ejército de Flandes a un control más riguroso. también proporciona evidencias documentales de por qué la Corona desistió en su empeño fiscalizador en esta misma década. Con ello, el artículo muestra la disyuntiva de incrementar o rebajar el control que se planteaba en coyunturas clave. Además, pone de manifiesto el apoderamiento que la función fiscalizadora del consumo de fondos militares podía proporcionar en un escenario de guerra; la resistencia que semejante apoderamiento suscitaba entre los agent…