Results 101 to 110 of about 38,423 (309)

Opsin expression predicts male nuptial color in threespine stickleback. [PDF]

open access: yes, 2018
Theoretical models of sexual selection suggest that male courtship signals can evolve through the build-up of genetic correlations between the male signal and female preference.
Bolnick, Daniel I   +3 more
core   +2 more sources

Molecular phylogeny reveals a new species of ghost electric knifefish Porotergus Ellis 1912 (Gymnotiformes: Apteronotidae), from the Amazon basin

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of ghost electric knifefish, Porotergus sambaibensis sp. nov., is described from the Javaés River, a tributary of the Araguaia River in Brazil. The new species was assigned to the genus Porotergus as the closest relative to Porotergus gimbeli through maximum likelihood reconstruction of a concatenated multilocus dataset ...
Marina B. Mendonça   +4 more
wiley   +1 more source

Carotenoid-based coloration in cichlid fishes

open access: yesComparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2014
Animal colors play important roles in communication, ecological interactions and speciation. Carotenoid pigments are responsible for many yellow, orange and red hues in animals. Whereas extensive knowledge on the proximate mechanisms underlying carotenoid coloration in birds has led to testable hypotheses on avian color evolution and signaling, much ...
Ethan D. Clotfelter   +3 more
openaire   +3 more sources

Ecophenotypic Variation of Midas Cichlid, Amphilophus citrinellus (Gunther, 1864), in Lake Batur, Bali, Indonesia [PDF]

open access: yesBrazilian Journal of Biology
Cichlid fishes exhibit rapid adaptive radiations with significant diversification rates in response to ecological variability, i.e., ecological opportunity or geographical isolation.
R. Gustiano   +15 more
doaj   +1 more source

Selectivity in regeneration of the oculomotor nerve in the cichlid fish, Astronotus ocellatus [PDF]

open access: yes, 1965
It has long been considered a general rule for nerve regeneration that the reinnervation of skeletal muscle is nonselective. Regenerating nerve fibers are supposed to reconnect with one skeletal muscle as readily as another according to studies covering ...
Arora, H. L., Sperry, R. W.
core  

Individual identification of bony fishes using unique body markings: Implications and applications

open access: yesJournal of Fish Biology, EarlyView.
Abstract The natural variation in animal body markings, such as spots, stripes and blotches, offers a powerful tool for researchers, conservationists, citizen scientists and resource managers to distinguish specific individuals within species. By building libraries of photo‐identified individuals, we can track and differentiate individuals over time ...
Katie Dunkley   +6 more
wiley   +1 more source

Africa: the FBA connection [PDF]

open access: yes, 1986
Since its inception in the 1930's the Freshwater Biological Association at Windermere, England has been involved in research on African lakes and rivers.
Fryer, G., Talling, J.F.
core  

Structural and developmental insights into the muscles involved in lionfish (Pterois spp.) vocalisations

open access: yesJournal of Fish Biology, EarlyView.
Abstract Vocal signalling is an important mode of communication in fishes. The two species of lionfish in the Pterois complex, the Indo‐Pacific lionfish (Pterois volitans) and the red lionfish (Pterois miles), are both known to produce different types of sounds with sonic muscles attached to the swimbladder.
Roxanne B. Holmes   +5 more
wiley   +1 more source

A revision of the genus Astatoreochromis (Teleostei, Cichlidae), East-Africa [PDF]

open access: yes, 2013
A taxonomic revision of the cichlid genus Astatoreochromis is presented. Eighteen meristic and 23 morphometric measurements were taken on 185 individuals, including type specimens.
Banyankimbona, Gaspard   +2 more
core   +3 more sources

Metabarcoding Reveals a Potentially Undescribed Columnaris‐Causing Bacterium in Peracute Skin Disease of Rainbow Trout (Oncorhynchus mykiss, Walbaum)

open access: yesJournal of Fish Diseases, EarlyView.
ABSTRACT Columnaris‐causing bacteria (CCB) represent a group of four Flavobacterium species, previously classified under Flavobacterium columnaris, causing a threatening condition in salmonid farming characterised by cutaneous and gill lesions, commonly referred to as ‘saddleback disease’. A peracute skin disease outbreak with high mortality in rainbow
Samuele Zamparo   +11 more
wiley   +1 more source

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