8 downloads
35 views

Brachycephalus are among the smallest terrestrial vertebrates in the world. The genus encompasses 34 species endemic to the Brazilian Atlantic Rainforest, occurring mostly in montane forests, with many species showing microendemic distributions to single mountaintops....

["Zoology"]
doi:10.7287/peerj.preprints.3461v1
18 downloads
191 views

Background In recent years, next generation high throughput sequencing technologies have proven to be useful tools for investigations concerning the genomics or transcriptomics also of non-model species. Consequently, ornithologists have adopted these technologies...

["Bioinformatics","Genomics","Zoology"]
doi:10.7717/peerj.4045
23 downloads
211 views

The phylogenetic position of three taxa from two trematode genera, belonging to the subfamily Acanthostominae (Opisthorchioidea: Cryptogonimidae), were analysed using partial 28S ribosomal DNA (Domains 1–2) and internal transcribed spacers (ITS1–5.8S–ITS2). Bayesian...

["Biodiversity","Evolutionary Studies","Marine Biology","Parasitology","Zoology"]
doi:10.7717/peerj.4158
31 downloads
169 views

Introduction Aquatic oligochaetes represent valuable indicators of the quality of sediments of watercourses and lakes, but their difficult identification based on morphological criteria compromises their more common use for eco-diagnostic analyses. This issue could...

["Biodiversity","Ecology","Genetics","Taxonomy","Zoology"]
doi:10.7717/peerj.4122
182 downloads
1,804 views

Our knowledge about the body morphology of many extinct early vertebrates is very limited, especially in regard to their post-thoracic region. The prompt disarticulation of the dermo-skeletal elements due to taphonomic processes and the lack of a well-ossified...

["Ecology","Paleontology","Zoology"]
doi:10.7717/peerj.4081
41 downloads
128 views

Background. Passerine birds exploit different kinds of feeding habits and they have to face seasonal changes in food availability. Therefore, the composition of the principal nutrient in their food differs from the usual. In consequence the digestive function –...

["Ecology","Zoology"]
doi:10.7287/peerj.preprints.3443v2
34 downloads
394 views

Infrared thermal imaging has emerged as a valuable tool in veterinary medicine, in particular for evaluating reproductive processes. Here, we explored differences in skin temperature of twenty female chimpanzees in Budongo Forest, Uganda, four of which were pregnant...

["Animal Behavior","Zoology"]
doi:10.7717/peerj.4116
63 downloads
423 views

Communicative traits are strikingly diverse and may vary among populations of the same species. Within a population, these traits may also display seasonal variation. Chemical signals play a key role in the communication of many taxa. However, we still know far...

["Biodiversity","Ecology","Zoology","Climate Change Biology"]
doi:10.7717/peerj.3992
81 downloads
446 views

Background The deep-sea hydrothermal vent is one of the most ‘extreme’ environments in the marine realm. Few species are capable of inhabiting such ecosystems, despite extremely high productivity there supported by microbial chemosynthesis, leading to high biomass...

["Biodiversity","Ecology","Marine Biology","Taxonomy","Zoology"]
doi:10.7717/peerj.4121
76 downloads
345 views

Information about the distribution and abundance of the habitat-forming sessile organisms in marine ecosystems is of great importance for conservation and natural resource managers. Spatial interpolation methodologies can be useful to generate this information...

["Conservation Biology","Ecology","Ecosystem Science","Marine Biology","Zoology"]
doi:10.7717/peerj.4078
41 downloads
136 views

The larynx is an important morphological structure for sound production in frogs. Recently, high levels of variation in calls and their relation to the morphology of frogs in the family Hylidae, in addition to molecular data, have resulted in significant changes...

["Biodiversity","Ecology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.3438v1
63 downloads
373 views

The Pacific longnose parrotfish Hipposcarus longiceps (Valenciennes 1840) represents a prime fishery resource throughout much of the tropical Pacific. In this study, we sampled the species from the Guam commercial fishery market across five consecutive years to...

["Aquaculture, Fisheries and Fish Science","Marine Biology","Zoology","Natural Resource Management"]
doi:10.7717/peerj.4079
104 downloads
799 views

The latitudinal distributions in Devonian–Cretaceous ammonoids were analyzed at the genus level, and were compared with the hatchling sizes (i.e., ammonitella diameters) and the geological durations. The results show that (1) length of temporal ranges of ammonoids...

["Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.4108
110 downloads
550 views

The effects of ice ages on speciation have been well documented for many European and North American taxa. In contrast, very few studies have addressed the consequences of such environmental and topographical changes in North East Asian species. More precisely,...

["Biodiversity","Biogeography","Zoology"]
doi:10.7717/peerj.4044
132 downloads
1,061 views

Background Life history theory predicts that mothers should adjust reproductive investment depending on benefits of current reproduction and costs of reduced future reproductive success. These costs and benefits may in turn depend on the breeding female’s social...

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.4028

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