Males that exhibit alternative reproductive tactics (ARTs) often differ in the risk of sperm
competition and the energetic trade-offs they experience. The resulting patterns of selection …

The cephalopods (Mollusca: Cephalopoda) are an exceptional class among the
invertebrates, characterised by the advanced development of their conditional learning …

Sperm are specialized cells that require adenosine triphosphate (ATP) to support their
function. Maintaining sperm energy homeostasis in vitro is vitally important to improve the …

Strategic ejaculate adjustments occur when males modify their investment in sperm and
nonsperm components of the ejaculate according to the context. This strategy is expected to …

In some squids, such as those in the family Loliginidae, upon copulation, females receive
and store male-delivered sperm capsules, spermatangia, at two different body locations: the …

Loliginid squids provide a unique model system to explore male alternative reproductive
tactics (ARTs) and their linkage to size, behavioral decision making, and possibly age. Large …

Under intense sexual selection, males less successful in fighting and mate guarding often
adopt alternative reproductive tactics. In many species, males employing alternative tactics …

In cephalopods, all species are considered to be polyandrous because of their common life
history and reproductive traits reflecting a polyandrous mating system. Contrary to this belief …

Alternative reproductive tactics (ARTs) are discontinuous phenotypes associated with
reproduction, observed in males of many species. Typically, large males adopt a tactic of …

This study sought to characterize spermatogenesis and mature sperm within the
spermatophore of Todarodes pacificus. The process of spermatogenesis in this species can …