The Asian tiger mosquito (Aedes albopictus) is an important vector for pathogens that affect human health, including the viruses that cause dengue and Chikungunya fevers. It is also one of the world's fastest-spreading invasive species. For these reasons, it is crucial to identify strategies for controlling the reproduction and spread of this mosquito. During mating, seminal fluid proteins (Sfps) are transferred from male mosquitoes to females, and these Sfps modulate female behavior and physiology in ways that influence reproduction. Despite the importance of Sfps on female reproductive behavior in mosquitoes and other insects, the identity of Sfps in Ae. albopictus has not previously been reported. We used transcriptomics and proteomics to identify 198 Sfps in Ae. albopictus. We discuss possible functions of these Sfps in relation to Ae. albopictus reproduction-related biology. We additionally compare the sequences of these Sfps with proteins (including reported Sfps) in several other species, including Ae. aegypti. While only 72 (36.4%) of Ae. albopictus Sfps have putative orthologs in Ae. aegypti, suggesting low conservation of the complement of Sfps in these species, we find no evidence for an elevated rate of evolution or positive selection in the Sfps that are shared between the two Aedes species, suggesting high sequence conservation of those shared Sfps. Our results provide a foundation for future studies to investigate the roles of individual Sfps on feeding and reproduction in this mosquito. Functional analysis of these Sfps could inform strategies for managing the rate of pathogen transmission by Ae. albopictus.
Invasive species are an issue of global concern because they can have large impacts on ecosystems and are challenging to manage. We present an activity aimed at improving undergraduate students’ understanding of the ecological impacts and management of invasive species. Students work collaboratively in teams to examine the impacts of a particular invasive species on an ecosystem (a fictional national park). The teams then propose policies that would assist their park in minimizing the introduction and impacts of the invasive species, and discuss potential limitations of these proposed policies. Finally, the teams present their proposals in class, which allows for class discussions and opportunities for collaborative learning. By engaging in this activity, students can develop a more concrete understanding and appreciation of both the impacts of invasive species and the challenges involved in managing them.
Outdoor areas within or near college campuses offer an opportunity for biology students to observe the natural world and apply concepts from class. Here, I describe an engaging and integrative project where undergraduate non-major biology students work in teams to develop and present professional "eco tours." This project takes place over multiple class sessions and is customizable on the basis of course content. This project encourages students to work collaboratively and demonstrate creativity, and empowers students with opportunities to enhance public-speaking skills and share findings with the greater campus community. Context Safety Considerations J J JThis project involves outdoor work, so students should dress for the weather, wear comfortable shoes, and bring plenty of water. Additionally, it is important to make students aware of potentially harmful species around tour areas (e.g., poison ivy). Materials Recommended for EachJ J J "The tours were good; great way to force a class to apply con-• cepts, explain them, show examples, and enjoy it."
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