Sex differences in aging occur in many animal species, and they include sex differences in
lifespan, in the onset and progression of age‐associated decline, and in physiological and …

Aging is a nearly inescapable trait among organisms yet lifespan varies tremendously
across different species and spans several orders of magnitude in vertebrates alone. This …

Wildlife exhibits various sex-determination systems where sex chromosomes and
environmental temperatures may both contribute to individual sexual development. The …

Females and males often have markedly different mortality rates and life spans, but it is
unclear why these forms of sexual dimorphism evolve. The unguarded X hypothesis …

Context Functional connectivity across fragmented habitat patches is essential for the
conservation of animal populations in humanized landscapes. Given their low dispersal …

Actuarial senescence (called 'senescence'hereafter) often shows broad variation at the
intraspecific level. Phenotypic plasticity likely plays a central role in among‐individual …

Y and W chromosomes often stop recombining and degenerate. Different theories have
been proposed to explain these observations. The classic theory supposes that …

Sex reversal, a mismatch between phenotypic and genetic sex, can be induced by chemical
and thermal insults in ectotherms. Therefore, climate change and environmental pollution …

Sex chromosomes determine male and female phenotypes, and the resulting sex
differences can have significant impacts on ecology and life history. One manifestation of …

Sex is a fundamental trait of all sexually reproducing organisms, and sex-determination
systems show a great diversity across the tree of life. A growing body of evidence shows that …