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Apomixis, asexual reproduction through seeds, occurs in over 40 plant families. This widespread phenomenon can lead to the fixation of successful genotypes, resulting in a fitness advantage. On the other hand, apomicts are expected to lose their fitness advantage if the environment changes because of their limited evolutionary potential, which is due to low genetic variability and the potential...

We explored how inter- and intra-specific competition among larvae of two temporary-pool mosquito species, Culiseta longiareolata and Ochlerotatus caspius, affect larval developmental strategy and life history traits. Given that their larvae have similar feeding habits, we expected negative reciprocal inter-specific interactions. In a microcosm experiment, we found sex-specific responses of lar...

The Steering Committee decided to approach the Editors of the Australasian Journal of Combinatorics with a proposal to publish selected refereed papers from the conference. We were delighted when the proposal was accepted, and the Australasian Journal of Combinatorics joined other journals such as Advances in Applied Mathematics, Annals of Combinatorics, Electronic Journal of Combinatorics, Jou...

Two unlinked genes which specify alcohol dehydrogenase (ADH) enzymes in maize are coordinately regulated by competition for a factor which limits the rate of total ADH expression during anaerobiosis. The "gene competition hypothesis" and the existence of organ-specific competitive programs, as proposed by Schwartz (1971), is further supported. The potential balance of expression between these t...

Previous experiments with mouse chimeras demonstrated that cellular competition for antigen-specific survival signals plays a crucial role in the maintenance of the naive B cell repertoire. Transgenic (Tg) B cell populations in these chimeras have a shortened lifespan and poor competitive abilities as compared to more diverse non-Tg populations in the same mice. We develop a mathematical model ...

This experiment investigated potential gender biases in the emergence of leadership in groups. Teams played a public-goods game under conditions of intra- or intergroup competition. We predicted and found a strong preference for female leaders during intragroup competition and male leaders during intergroup competition. Furthermore, during intragroup competition, a female leader was more instru...

Applying a framework of perfect competition under uncertainty, we contribute to the discussion of whether or not ad valorem taxes and specific taxes are equivalent. While this equivalence holds without price uncertainty, we show that ad valorem taxes and specific taxes are “almost never” equivalent in the presence of uncertainty if we demand equivalence to hold pathwise. Since we obtain this re...

Until the year 2000, there was no specific statute enacted in Jordan that regulates unfair competition. In the year 2000, the Jordanian Unfair Competition Law No. 15 of 2000 was enacted. The Law deals with the issue of unfair competition in a very generic way. In addition to the Jordanian Unfair Competition Law, the principal statutory source of protection is implemented through the general rul...