Parental breeding age effects on descendants' longevity interact over 2 generations in matrilines and patrilines

Individuals within populations vary enormously in mortality risk and longevity, but the causes of this variation remain poorly understood. A potentially important and phylogenetically widespread source of such variation is maternal age at breeding, which typically has negative effects on offspring longevity. Here, we show that paternal age can affect offspring longevity as strongly as maternal age does and that breeding age effects can interact over 2 generations in both matrilines and patrilines. We manipulated maternal and paternal ages at breeding over 2 generations in the neriid fly Telostylinus angusticollis. To determine whether breeding age effects can be modulated by the environment, we also manipulated larval diet and male competitive environment in the first generation. We found separate and interactive effects of parental and grand-parental ages at breeding on descendants' mortality rate and life span in both matrilines and patrilines. These breeding age effects were not modulated by grand-parental larval diet quality or competitive environment. Our findings suggest that variation in maternal and paternal ages at breeding could contribute substantially to intrapopulation variation in mortality and longevity

Landscape and Culture - Cross-linguistic Perspectives

The relationship between landscape and culture seen through language is an exciting and increasingly explored area. This ground-breaking book contributes to the linguistic examination of both cross-cultural variation and unifying elements in geographical categorization. The study focuses on the contrastive lexical semantics of certain landscape words in a number of languages. The aim is to show how geographical vocabulary sheds light on the culturally and historically shaped ways people see and think about the land around them. Notably, the study presents landscape concepts as anchored in a human-centred perspective, based on our cognition, vision, and experience in places. The Natural Semantic Metalanguage (NSM) approach allows an analysis of meaning which is both fine-grained and transparent. The book is aimed, first of all, at scholars and students of linguistics. Yet it will also be of interest to researchers in geography, environmental studies, anthropology, cultural studies, Australian Studies, and Australian Aboriginal Studies because of the book’s cultural take