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Novel antibiotic resistance profiles in bacteria isolated from oil fly larvae Helaeomyia petrolei living in the La Brea Tar Pits.
Antonie Van Leeuwenhoek
December 2024
School of Biological Sciences, University of Nebraska, Lincoln, NE, 68588-0666, USA.
Larvae from the petroleum oil fly, Helaeomyia petrolei, live in the asphaltene and polyaromatic hydrocarbon rich asphalt seeps of Rancho La Brea, Los Angeles, California. These larvae pass high amounts of viscous asphalt through their digestive system, and their gut microbiota is exposed to these extreme conditions. Environmental stress response mechanisms can co-select for antibiotic resistance, and in the current study we used 16S rRNA and genomic sequencing along with the Comprehensive Antibiotic Resistance Database (CARD) tools to characterize antibiotic resistance profiles from six bacteria previously isolated from the oil fly larval intestinal tract, linking phenotypic and genotypic resistance profiles.
View Article and Find Full Text PDFDistinguishing functions of trypanosomatid protein kinases.
Trends Parasitol
November 2022
York Biomedical Research Institute, Department of Biology, University of York, York, UK. Electronic address:
Article Synopsis
- Trypanosomatid protozoa are unique parasites that have developed special ways to manage their life cycles and adapt to various hosts, differing from typical models.
- Understanding their adaptation strategies could lead to better drug control methods.
- The review emphasizes the role of protein kinases in these organisms, comparing the distinct features of trypanosomatid kinomes with other eukaryotes and focusing on Leishmania and African trypanosomes.
How colonial animals evolve.
Sci Adv
January 2020
Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Panamá, República de Panamá.
The evolution of modular colonial animals such as reef corals and bryozoans is enigmatic because of the ability for modules to proliferate asexually as whole colonies reproduce sexually. This reproductive duality creates an evolutionary tension between modules and colonies because selection operates at both levels. To understand how this evolutionary conflict is resolved, we compared the evolutionary potential of module- and colony-level traits in two species of the bryozoan , grown and bred in a common garden experiment.
View Article and Find Full Text PDFThe endocrine system controlling sexual reproduction in animals: Part of the evolutionary ancient but well conserved immune system?
Gen Comp Endocrinol
January 2016
Insect Physiology and Molecular Ethology Group, Department of Biology, KU Leuven-University of Leuven, Belgium.
Drastic changes in hormone titers, in particular of steroid hormones, are intuitively interpreted as necessary and beneficial for optimal functioning of animals. Peaks in progesterone- and estradiol titers that accompany the estrus cycle in female vertebrates as well as in ecdysteroids at each molt and during metamorphosis of holometabolous insects are prominent examples. A recent analysis of insect metamorphosis yielded the view that, in general, a sharp rise in sex steroid hormone titer signals that somewhere in the body some tissue(s) is undergoing programmed cell death/apoptosis.
View Article and Find Full Text PDFJoint Segmentation and Registration Through the Duality of Congealing and Maximum Likelihood Estimate.
Inf Process Med Imaging
September 2015
In this paper we consider the task of joint registration and segmentation. A popular method which aligns images and simultaneously estimates a simple statistical shape model was proposed by E. Learned-Miller and is known as.
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