Publications by authors named "A C Aisenberg"
Article Synopsis
- Brunneria subaptera, a common praying mantis species in Uruguay, shows surprising traits, including a female-only population with no recorded males in the wild.
- The study involved sampling and DNA analysis over a year, confirming that all collected individuals were female and indicating they reproduce through a process called thelytokous parthenogenesis.
- Findings suggest a recent species origin (approximately 2.33 million years ago) and uniform genetic material across sampled locations, highlighting the need for further research on their reproductive strategies amidst declining grassland habitats.
Seasonality considerably impacts on the life of organisms and leads to numerous evolutionary adaptations. Some species face seasonal changes by entering a diapause during different life stages. During adulthood, a diapause in the non-reproductive period can affect male gametogenesis as, for example, it occurs in insects.
View Article and Find Full Text PDFEach species and sex can develop different reproductive strategies to optimize their fitness while assigning reproductive effort. Allocosa senex is a sex-role reversed spider whose males construct long burrows in the sand. They wait for wandering females to approach, assess their sexual partners and donate their constructions to females after copulation.
View Article and Find Full Text PDFBody size, nuptial gift characteristics and courtship behaviour, among other traits, can reflect the quality of a potential mate and, thus, might be under sexual selection. To maximize their mating success, individuals can show behavioural plasticity in sexual context. Allocosa senex is a burrow-digging wolf spider that exhibits reversal in courtship roles and in sexual size-dimorphism expected for spiders.
View Article and Find Full Text PDFArticle Synopsis
- The immune response carries costs, with trade-offs between immunity and reproduction noted in various arthropod species, leading to expected sex differences in immune function.
- Research conducted on the burrowing wolf spider Allocosa senex found that female spiders displayed higher lytic activity than males, indicating stronger immune responses.
- Additionally, males that dug deeper burrows exhibited increased lytic activity, suggesting that their behavior influences their immune responses, while no correlation was found between male body condition and burrow length, a trait influenced by female choice.