Ben M. Sadd
Illinois State University
EcologyBumblebeeBombus terrestrisBiologyImmune system
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Publications 62
#1Cheng SunH-Index: 54
#2Jiaxing HuangH-Index: 9
Last. Manolis Kamvysselis (Broad Institute)H-Index: 4
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Bumblebees are a diverse group of globally important pollinators in natural ecosystems and for agricultural food production. With both eusocial and solitary life-cycle phases, and some social parasite species, they are especially interesting models to understand social evolution, behavior, and ecology. Reports of many species in decline point to pathogen transmission, habitat loss, pesticide usage, and global climate change, as interconnected causes. These threats to bumblebee diversity make our...
#1Sydney A. Cameron (INHS: Illinois Natural History Survey)H-Index: 29
#2Ben M. Sadd (ISU: Illinois State University)H-Index: 23
Bumble bees (Bombus) are unusually important pollinators, with approximately 260 wild species native to all biogeographic regions except Africa, Australia, and New Zealand. As they are vitally impo...
12 CitationsSource
#2Jie WuH-Index: 10
Last. Jilian LiH-Index: 11
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ABSTRACT Bumble bees are important pollinators in natural and agricultural ecosystems. Their social colonies are founded by individual queens, which, as the predominant reproductive females of colonies, contribute to colony function through worker production and fitness through male and new queen production. Therefore, queen health is paramount, but even though there has been an increasing emphasis on the role of gut microbiota for animal health, there is limited information on the gut microbial...
#1Logan A. Sauers (ISU: Illinois State University)H-Index: 1
#2Ben M. Sadd (ISU: Illinois State University)H-Index: 23
: There has been a proliferation of studies demonstrating an organism's health is influenced by its microbiota. However, factors influencing beneficial microbe colonization and the evolution of these relationships remain understudied relative to host-pathogen interactions. Vertically transmitted beneficial microbes are predicted to show high levels of specificity in colonization, including genotype matching, which may transpire through coevolution. We investigate how host and bacterial genotypes...
1 CitationsSource
#1Kerrigan B Tobin (ISU: Illinois State University)H-Index: 1
#2Austin C. Calhoun (ISU: Illinois State University)H-Index: 1
Last. Ben M. SaddH-Index: 23
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: Climate change-related increases in thermal variability and rapid temperature shifts will affect organisms in multiple ways, including imposing physiological stress. Furthermore, the effects of temperature may alter the outcome of biotic interactions, such as those with pathogens and parasites. In the context of host-parasite interactions, the beneficial acclimation hypothesis posits that shifts away from acclimation or optimum performance temperatures will impose physiological stress on hosts...
1 CitationsSource
#1Scott K. Sakaluk (ISU: Illinois State University)H-Index: 36
#2Jeannine Oldzej (ISU: Illinois State University)
Last. Ben M. Sadd (ISU: Illinois State University)H-Index: 23
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Although inbreeding depression in life-history traits has been well characterized, inbreeding effects on mating behaviour and sexually selected traits have been less well studied. Here, we assess levels of inbreeding depression in a number of fitness-related reproductive parameters of female decorated crickets, Gryllodes sigillatus. We predicted that due to direct negative effects of inbreeding and a potential trade-off between reproduction and current survival, as suggested by effects of inbree...
#1Marc A. Ashford (ISU: Illinois State University)
#2Sarah Palackdharry (ISU: Illinois State University)H-Index: 1
Last. Laura A. Vogel (ISU: Illinois State University)H-Index: 22
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: Disease is a significant threat in the global decline of reptile species. Many aquatic reptiles live in habitats with high levels of opportunistic microbial pathogens, yet little is known about their immune system. Gut-associated lymphoid tissue is vital for protection against ingested pathogens and maintenance of normal gut microbiota. In mammals, gut mucosal immunity is well-characterized and mucosal surfaces are coated in protective antibodies. However, reptiles lack lymph nodes and Peyer's...
#1Kristin R. Duffield (ISU: Illinois State University)H-Index: 4
#2Kylie J. Hampton (ISU: Illinois State University)H-Index: 2
Last. Scott K. Sakaluk (ISU: Illinois State University)H-Index: 36
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: Infection can cause hosts to drastically alter their investment in key life-history traits of reproduction and defence. Infected individuals are expected to increase investment in defence (e.g., by increasing immune function) and, due to trade-offs, investment in other traits (e.g., current reproduction) should decrease. However, the terminal investment hypothesis postulates that decreased lifespan due to infection and the associated reduction in the expectation for future offspring will favou...
2 CitationsSource
#1Scott K. Sakaluk (ISU: Illinois State University)H-Index: 36
#2Kristin R. Duffield (ISU: Illinois State University)H-Index: 4
Last. John Hunt (USYD: University of Sydney)H-Index: 42
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Abstract Nuptial food gifts are an integral feature of the mating systems of a wide variety of insects. A pervasive feature of the majority of these gifts is that they afford the male direct access to the female's physiology. Although in some cases such gifts may represent a form of nutritional investment in females, an alternative hypothesis posits that nuptial food gifts may allow males to manipulate female physiology in favor of male interests. This hypothesis predicts that the chemical compo...
1 CitationsSource
#1Xiaomeng ZhaoH-Index: 3
#2Long SuH-Index: 1
Last. Cheng SunH-Index: 54
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: Tandem repeats (TRs) are highly dynamic regions of the genome. Mutations at these loci represent a significant source of genetic variation and can facilitate rapid adaptation. Bumblebees are important pollinating insects occupying a wide range of habitats. However, to date, molecular mechanisms underlying the potential adaptation of bumblebees to diverse habitats are largely unknown. In the present study, we investigate how TRs contribute to genetic variation in bumblebees, thus potentially fa...
5 CitationsSource