Peer-reviewed Articles

Total of 298 results
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zoology

Postcopulatory sexual selection may favour mechanisms to reduce sperm competition, like physical sperm removal by males. To investigate the origin of sperm removal, I studied the reproductive behaviour and mechanisms of sperm competition in the only living member...

["Animal Behavior","Ecology","Entomology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.2077

Global warming is influencing the biology of the world’s biota. Temperature increases are occurring at a faster pace than that experienced by organisms in their evolutionary histories, limiting the organisms’ response to new conditions. Mechanistic models that...

["Conservation Biology","Ecology","Zoology"]
doi:10.7717/peerj.2072

Mauremys reevesii (Geoemydidae) is one of the most common and widespread semi-aquatic turtles in East Asia. The unusually long lifespan of some individuals makes this turtle species a potentially useful model organism for studying the molecular basis of longevity....

["Genetics","Genomics","Zoology"]
doi:10.7717/peerj.2062
41 downloads
296 views

Background. Foraging efficiency is critical in determining the success of organisms and may be affected by a range of factors, including resource distance and quality. For social insects such as ants, outcomes must be considered at the level of both the individual...

["Animal Behavior","Ecology","Ecosystem Science","Entomology","Zoology"]
doi:10.7717/peerj.2049
41 downloads
539 views

Cuttlefish are known for their ability to quickly alter their total appearance, or body pattern, to camouflage or to communicate with predators, prey and conspecifics. The body patterns of some species have been extensively documented to gain a better understanding...

["Animal Behavior","Marine Biology","Zoology"]
doi:10.7717/peerj.2035
34 downloads
200 views

Microsatellite markers remain an important tool for ecological and evolutionary research, but are unavailable for many non-model organisms. One such organism with rare ecological and evolutionary features is the epizoic barnacle Chelonibia testudinaria (Linnaeus,...

["Ecology","Evolutionary Studies","Genomics","Molecular Biology","Zoology"]
doi:10.7717/peerj.2019
44 downloads
144 views

Plotosus canius (Hamilton, 1822) is a significant marine species in Malaysia from nutritional and commercial perspectives. Despite numerous fundamental research on biological characteristics of P. canius, there are various concerns on the level of population differentiation,...

["Aquaculture, Fisheries and Fish Science","Conservation Biology","Marine Biology","Zoology"]
doi:10.7717/peerj.1930
191 downloads
869 views

Despite the increasing rate of systematic research on scarabaeine dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae), their fossil record has remained largely unrevised. In this paper, we review all 33 named scarabaeine fossils and describe two new species from...

["Entomology","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.1988
63 downloads
280 views

The phylogenetic position of many fossil platyrrhines with respect to extant ones is not yet clear. Two main hypotheses have been proposed: the layered or successive radiations hypothesis suggests that Patagonian fossils are Middle Miocene stem platyrrhines lacking...

["Anthropology","Biodiversity","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.1967
95 downloads
339 views

Background: Many amphibian species are negatively affected by habitat change due to anthropogenic activities. Populations distributed over modified landscapes may be subject to local extinction or may be relegated to the remaining—likely isolated and possibly degraded—patches...

["Animal Behavior","Conservation Biology","Evolutionary Studies","Genetics","Zoology"]
doi:10.7717/peerj.2014
99 downloads
548 views

Metrichia is assigned to the Ochrotrichiinae, a group of almost exclusively Neotropical microcaddisflies. Metrichia comprises over 100 described species and, despite its diversity, only one species has been described from Brazil so far. In this paper, we provide...

["Biodiversity","Entomology","Taxonomy","Zoology"]
doi:10.7717/peerj.2009
62 downloads
306 views

Organophosphate insecticides have been directly or indirectly implicated in avian populations declining worldwide. Birds in agricultural environments are commonly exposed to these insecticides, mainly through ingestion of invertebrates after insecticide application....

["Ecology","Environmental Sciences","Microbiology","Molecular Biology","Zoology"]
doi:10.7717/peerj.2002
273 downloads
1,381 views

Staurozoan classification is highly subjective, based on phylogeny-free inferences, and suborders, families, and genera are commonly defined by homoplasies. Additionally, many characters used in the taxonomy of the group have ontogenetic and intraspecific variation,...

["Biodiversity","Marine Biology","Molecular Biology","Taxonomy","Zoology"]
doi:10.7717/peerj.1951
999 downloads
6,726 views

The leopard’s (Panthera pardus) broad geographic range, remarkable adaptability, and secretive nature have contributed to a misconception that this species might not be severely threatened across its range. We find that not only are several subspecies and regional...

["Conservation Biology","Ecology","Zoology"]
doi:10.7717/peerj.1974
98 downloads
772 views

Behavioral flexibility is considered an important trait for adapting to environmental change, but it is unclear what it is, how it works, and whether it is a problem solving ability. I investigated behavioral flexibility and problem solving experimentally in great-tailed...

["Animal Behavior","Zoology"]
doi:10.7717/peerj.1975

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