Geographic variation in external morphology is thought to reflect an interplay between genotype and the environment. Morphological variation has been well-described for a number of cetacean species, including the bottlenose dolphin (Tursiops truncatus). In this...

["Animal Behavior","Biogeography","Ecology","Marine Biology","Zoology"]
doi:10.7287/peerj.preprints.2827v1
16 downloads
135 views

Tartrazine is a synthetic organic azo dye widely used in food and pharmaceutical products. The current study aimed to evaluate the possible adverse effect of this coloring food additive on renal and hepatic structures and functions. Also, the genotoxic potential...

["Biochemistry","Molecular Biology","Zoology","Histology"]
doi:10.7717/peerj.3041
28 downloads
208 views

In legged terrestrial locomotion, the duration of stance phase, i.e., when limbs are in contact with the substrate, is positively correlated with limb length, and negatively correlated with the metabolic cost of transport. These relationships are well documented...

["Evolutionary Studies","Zoology","Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.3008
919 downloads
2,068 views

The Night Frog genus Nyctibatrachus (Family Nyctibatrachidae) represents an endemic anuran lineage of the Western Ghats Biodiversity Hotspot, India. Until now, it included 28 recognised species, of which more than half were described recently over the last five...

["Biodiversity","Taxonomy","Zoology"]
doi:10.7717/peerj.3007
67 downloads
593 views

Background Prophoca and Leptophoca represent the oldest known genera of phocine seals, dating from the latest early to middle Miocene. Originally, Prophoca rousseaui and Prophoca proxima were described based on fragmentary remains from the Miocene of Belgium. However,...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3024
55 downloads
631 views

Three new cryptic species of Chiasmocleis from the Atlantic Forest of Brazil are described. Two of these species occur in the northeastern states of Sergipe and Bahia, whereas the third species is found in the southeastern state of São Paulo. The new species can...

["Biodiversity","Evolutionary Studies","Genetics","Taxonomy","Zoology"]
doi:10.7717/peerj.3005
22 downloads
138 views

Acontia, located in the gastrovascular cavity of anemone, are thread-like tissue containing numerous stinging cells which serve as a unique defense tissue against predators of the immobile acontiarian sea anemone. Although its morphology and biological functions,...

["Marine Biology","Zoology"]
doi:10.7717/peerj.2996
28 downloads
206 views

Knowledge on how functional responses (a measurement of feeding interaction strength) are affected by patch size and habitat complexity (represented by refuge availability) is crucial for understanding food-web stability and subsequently biodiversity. Due to their...

["Ecology","Mathematical Biology","Zoology"]
doi:10.7717/peerj.2993
95 downloads
409 views

The exoskeleton is an important source of characters for the taxonomy of Hydroidolina. It originates as epidermal secretions and, among other functions, protects the coenosarc of the polypoid stage. However, comparative studies on the exoskeletal tissue origin,...

["Cell Biology","Marine Biology","Taxonomy","Zoology","Histology"]
doi:10.7717/peerj.2964
30 downloads
252 views

Management of the few regulated ornamental fisheries relies on inadequate information about the life history of the target species. Herein, we investigated the reproductive biology of the most heavily traded marine invertebrate in the western Atlantic; the blue-legged...

["Animal Behavior","Aquaculture, Fisheries and Fish Science","Marine Biology","Zoology"]
doi:10.7717/peerj.3004
52 downloads
354 views

White-streaked grouper (Epinephelus ongus) is an important fisheries target and forms spawning aggregations at particular spawning grounds. The aims of the present study were to investigate the ecological characteristics of annual spawning aggregations such as...

["Animal Behavior","Aquaculture, Fisheries and Fish Science","Ecology","Marine Biology","Zoology"]
doi:10.7717/peerj.3000
13 downloads
81 views

I used radio-telemetry to track the movements of Mangrove Cuckoos (Coccyzus minor) captured in southwest Florida. Relatively little is known about the natural history of Mangrove Cuckoos, and my goal was to provide an initial description of how individuals use...

["Animal Behavior","Biodiversity","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.2798v1
27 downloads
59 views

Our ability to prevent extinction in declining populations often depends on effective management of habitats that are disturbed through wildfire, logging, agriculture, or development. In these disturbed landscapes, the juxtaposition of multiple habitat types can...

["Animal Behavior","Ecology","Zoology"]
doi:10.7287/peerj.preprints.2795v1
4 downloads
96 views

We recently found Cribrinopsis japonica Tsutsui & Tsuruwaka, 2014 (Shinkai-hakutou-ginchaku in Japanese name) at the depth between 384 and 800 m in Toyama Bay, Sea of Japan. Since then, C. japonica has been reared under atmospheric pressure in the laboratory for...

["Ecology","Marine Biology","Zoology"]
doi:10.7287/peerj.preprints.2788v1
138 downloads
535 views

The patella is a sesamoid bone located in the major extensor tendon of the knee joint, in the hindlimb of many tetrapods. Although numerous aspects of knee morphology are ancient and conserved among most tetrapods, the evolutionary occurrence of the patella is...

["Evolutionary Studies","Paleontology","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.2594v2

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