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Periodic gonadal activity and protracted mating in elasmobranch fishes
It is suggested the protracted mating period of the Atlantic stingray serves some currently undetermined function such as induction of steroidogenesis, oocyte growth, or ovulation in females.
Morphology of the Mechanosensory Lateral Line System in Elasmobranch Fishes: Ecological and Behavioral Considerations
- K. Maruska
- BiologyEnvironmental Biology of Fishes
- 1 February 2001
Pored canals on the dorsal body and tail of elasmobranchs are best positioned to detect water movements across the body surface generated by currents, predators, conspecifics, or distortions in the animal's flow field while swimming.
Arginine Vasotocin Neuronal Phenotypes among Congeneric Territorial and Shoaling Reef Butterflyfishes: Species, Sex and Reproductive Season Comparisons
- A. Dewan, K. Maruska, T. Tricas
- Biology, Environmental ScienceJournal of neuroendocrinology
- 1 December 2008
The present study provides the first evidence for variation in vasotocin neural organisation in two congeneric and sympatric fish species with different social systems.
The African Cichlid Fish Astatotilapia burtoni Uses Acoustic Communication for Reproduction: Sound Production, Hearing, and Behavioral Significance
It is shown for the first time in a Tanganyikan cichlid that acoustic communication is important during reproduction as part of a multimodal signaling repertoire, and that perception of auditory information changes depending on the animal's internal physiological state.
Characterization of cell proliferation throughout the brain of the African cichlid fish Astatotilapia burtoni and its regulation by social status
The results suggest that A. burtoni will be a useful model to analyze the mechanisms of socially induced neurogenesis in vertebrates.
Behavioral and physiological plasticity: Rapid changes during social ascent in an African cichlid fish
Sound production and spectral hearing sensitivity in the Hawaiian sergeant damselfish, Abudefduf abdominalis
- K. Maruska, K. Boyle, Laura R. Dewan, T. Tricas
- PhysicsJournal of Experimental Biology
- 15 November 2007
Data provide the first evidence that Abudefduf uses true acoustic communication on a level similar to that of both more derived and more basal soniferous pomacentrids, consistent with the sensory drive model of signal evolution.
Test of the mechanotactile hypothesis: neuromast morphology and response dynamics of mechanosensory lateral line primary afferents in the stingray
These low frequency, tactile response properties support the hypothesis that the stingray's non-pored ventral lateral line functions as a mechanotactile receptor subsystem used to guide small benthic invertebrates to the ventrally positioned mouth.
Morphology of the mechanosensory lateral line system in the Atlantic Stingray, Dasyatissabina: The mechanotactile hypothesis
The Mechanotactile Hypothesis is proposed, which states that the ventral nonpored canals and vesicles of Savi function as specialized tactile mechanoreceptors that facilitate the detection and capture of small benthic invertebrate prey.
Social information changes the brain
Surprisingly, changes in social status have rapid and profound effects over very short time scales and radically alter overt behavior, as well as physiological, cellular, and molecular factors that regulate reproductive capacity.