Background During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect of changes in tendon mechanical properties...

["Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.6764

Several calls to action urge scientists and science communicators to engage more with online communities. While these calls have been answered by a high percentage of scientists and science communicators online, it often remains unclear what are the best models...

["Biodiversity","Science and Medical Education","Biological Oceanography"]
doi:10.7717/peerj.6795

Burkholderia zhejiangensis CEIB S4-3 has the ability to degrade methyl parathion (MP) and its main hydrolysis byproduct p-nitrophenol (PNP). According to genomic data, several genes related with metabolism of MP and PNP were identified in this strain. However,...

["Biochemistry","Biotechnology","Microbiology","Environmental Contamination and Remediation"]
doi:10.7717/peerj.6822

Recent studies have proposed that conditional cooperation may resolve sexual conflict over the amount of care provided by each parent. Such conditional cooperation may allow parents to equalize their investment by alternating their provisioning visits. This alternated...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.6826

Background The fibronectin type 3 and ankyrin repeat domains 1 gene, Fank1, is an ancient, evolutionarily conserved gene present in vertebrates. Short-hairpin RNA (shRNA)-based knockdown transgenic mice have oligospermia caused by an increase in apoptotic germ...

["Andrology","Histology"]
doi:10.7717/peerj.6827
73 downloads
121 views

Background. The purpose of this study was to establish a reproductive schedule and examine reproductive traits that shape fecundity of the Bigeye Chub, Hybopsis amblops Cyprinidae, in the Flint River system of north Alabama. Methods. Life history traits associated...

["Aquaculture, Fisheries and Fish Science","Ecology","Freshwater Biology"]
doi:10.7287/peerj.preprints.26719v2

The gut microbiome plays an important role in the health of dogs. Both beneficial microbes and overall diversity can be modulated by diet. Fermentable sources of fiber in particular often increase the abundance of beneficial microbes. House crickets (Acheta domesticus)...

["Food Science and Technology","Microbiology","Veterinary Medicine"]
doi:10.7287/peerj.preprints.27677v1

Throughout forests worldwide, bark and ambrosia beetles inoculate dead and dying trees with symbiotic fungi. We experimentally determined the effects of three common and widely distributed ascomycete symbionts, and one introduced Asian basidiomycete symbiont on...

["Ecology","Ecosystem Science","Entomology","Mycology","Forestry"]
doi:10.7287/peerj.preprints.27676v1
1 download
1 view

Background Marfan’s syndrome (MFS) is a systemic disorder of connective tissue caused by mutations in the extracellular matrix protein fibrillin-1. Orofacial characteristics may be useful in identification of the syndrome. Severe periodontitis is sometimes observed...

["Dentistry"]
doi:10.7717/peerj.6606
1 download
1 view

Marine protected areas (MPAs) are increasingly being used as conservation tools in the marine environment. Success of MPAs depends upon sound scientific design and societal support. Studies that have assessed societal preferences for temperate MPAs have generally...

["Natural Resource Management"]
doi:10.7717/peerj.6672
1 download
1 view

Introgression, the transmission of genetic material of one taxon into another through hybridization, can have various evolutionary outcomes. Previous studies have detected signs of introgression between western populations of the Mexican endemic and threatened...

["Biodiversity","Conservation Biology","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.6744
1 download
1 view

We describe a new species of minute, terrestrial-breeding frog in the genus Noblella. We collected a single specimen in the leaf litter of primary montane forest (2,225 m a.s.l.) near Thiuni, in the Provice of Carabaya, Department of Puno, in the upper watershed...

["Biodiversity","Conservation Biology","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.6780
1 download
1 view

Although amphipods are key components of the macro-fauna associated with Posidonia oceanica meadows, to date no studies focused on the structure and diversity of their assemblages across the whole Mediterranean Sea. Here, we applied a network approach based on...

["Biogeography","Ecology","Marine Biology"]
doi:10.7717/peerj.6786
1 download
1 view

The purpose of this study was to characterize the short-term effects of Achilles tendon ruptures on medial gastrocnemius. We hypothesized that the fascicles of the medial gastrocnemius muscle of the injured Achilles tendon would be shorter and more pennate immediately...

["Bioengineering","Kinesiology","Orthopedics"]
doi:10.7717/peerj.6788
1 download
1 view

Neurons are embedded in an extracellular matrix (ECM), which functions both as a scaffold and as a regulator of neuronal function. The ECM is in turn dynamically altered through the action of serine proteases, which break down its constituents. This pathway has...

["Neuroscience"]
doi:10.7717/peerj.6796

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