The Neuroecology of Cartilaginous Fishes: Sensory Strategies for Survival

@article{Collin2012TheNO,
  title={The Neuroecology of Cartilaginous Fishes: Sensory Strategies for Survival},
  author={Shaun P. Collin},
  journal={Brain, Behavior and Evolution},
  year={2012},
  volume={80},
  pages={80 - 96}
}
  • S. Collin
  • Published 1 September 2012
  • Environmental Science, Biology
  • Brain, Behavior and Evolution
As apex predators, chondrichthyans, or cartilaginous fishes, hold an important position within a range of aquatic ecosystems and influence the balance between species’ abundance and biodiversity. Having been in existence for over 400 million years and representing the earliest stages of the evolution of jawed vertebrates, this group also covers a diverse range of eco-morphotypes, occupying both marine and freshwater habitats. The class Chondrichthyes is divided into two subclasses: the… 

Figures from this paper

Not all sharks are “swimming noses”: variation in olfactory bulb size in cartilaginous fishes

The results show that the OBs maintain a substantial level of allometric independence from the rest of the brain across cartilaginous fishes and that OB size is highly variable among species, and suggest that there is great variability in the degree to which these fishes rely on olfactory cues.

Comparative Brain Morphology of the Greenland and Pacific Sleeper Sharks and its Functional Implications

Brain organization of S. microcephalus and S. pacificus was assessed in the context of up to 117 other cartilaginous fish species, using phylogenetic comparative techniques, and the region of the brain responsible for motor control is small and lacking foliation, a characteristic not yet described for any other large-bodied (>3 m) shark.

Ecomorphology of oral papillae and denticles of Zapteryx brevirostris (Chondrichthyes, Rhinobatidae)

The hypothesis that oral papillae and denticles in Z. brevirostris may be an adaptive reflection shaped by feeding habits, capture strategies and processing prey is supported.

First Description of a Palatal Organ in Chimaera monstrosa (Chondrichthyes, Holocephali)

It is described for the first time a well evidenced structure localized in the palate of the chimaeroid Chimaera monstrosa, here named a palatal organ (PO), characterized by dense connective tissue with abundant collagen and elastic fibers and no muscular tissue.

Smart sharks: a review of chondrichthyan cognition.

450 million years of evolution have given chondrichthyans (sharks, rays and allies) ample time to adapt perfectly to their respective everyday life challenges and cognitive abilities have played an

Shifts of sensory modalities in early life history stage estuarine fishes (Sciaenidae) from the Chesapeake Bay using X-ray micro computed tomography

It is proposed that the ontogenetic trends in sensory modality described in sciaenids from the Chesapeake Bay can be used in future research to ascertain the potential species-specific impacts of water quality change on ELHS fishes.

A preliminary investigation into the morphology of oral papillae and denticles of blue sharks (Prionace glauca) with inferences about its functional significance across life stages

A preliminary investigation into the structural and dimensional characteristics of the oral papillae and denticles found in the oropharyngeal cavity of the blue shark during embryonic development through adulthood suggests that development of papilae occurs early in ontogeny, before the formation of the Oral denticles.

Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa

Ampullary organs of the ghost shark Chimaera monstrosa, a deep-sea species commonly captured as by-catch in the bottom trawl fishery, are described for the first time using macroscopic, ultrastructural and histological approaches, showing some anatomical peculiarities never described before in others cartilaginous fishes.
...

References

SHOWING 1-10 OF 224 REFERENCES

A review of the sensory biology of chimaeroid fishes (Chondrichthyes; Holocephali)

  • T. J. Lisney
  • Environmental Science
    Reviews in Fish Biology and Fisheries
  • 2010
A survey of the existing literature on the major senses in chimaeroids is provided in order to stimulate and identify areas for future research to help protect and management of these fascinating fishes.

The role of olfaction throughout juvenile development: Functional adaptations in elasmobranchs

Seven elasmobranch species, a group known for their highly‐developed sense of smell, were examined for developmental changes in the number of olfactory lamellae, the size of the surface area of the

Neuroecology of cartilaginous fishes: the functional implications of brain scaling.

  • K. Yopak
  • Biology
    Journal of fish biology
  • 2012
Clear patterns of brain organization exist across cartilaginous fishes, irrespective of phylogenetic grouping and, although this study was not a functional analysis, it provides further evidence that chondrichthyan brain structures might have developed in conjunction with specific behaviours or enhanced cognitive capabilities.

Phylogenetic and ecological factors influencing the number and distribution of electroreceptors in elasmobranchs.

The elasmobranch electrosensory system has evolved to operate efficiently under the environmental conditions of the particular habitat in which a species lives, which is evident by a general trend of increasing pore abundance over time.

Convergent evolution in mechanical design of lamnid sharks and tunas

It is demonstrated that not only have lamnids and tunas converged to a much greater extent than previously known, but they have also developed morphological and functional adaptations in their locomotor systems that are unlike virtually all other fishes.

Allometric Scaling of the Optic Tectum in Cartilaginous Fishes

The neuroecological relationships between the relative size of the optic tectum and primary habitat and lifestyle for cartilaginous fishes mirror those established for bony fishes; it is speculated that the relativesized tecta and tegmentum similarly reflects the importance of vision and sensory processing in cartilagineous fishes.

The Neuroecology of the Elasmobranch Electrosensory World: Why Peripheral Morphology Shapes Behavior

  • T. Tricas
  • Biology
    Environmental Biology of Fishes
  • 2004
The first step in a ‘neuroecological’ approach to interpret the spatial arrangement of the electrosensory ampullary organs in elasmobranch fishes is presented, which indicates the white shark BUC may function in detection of uniform fields, including magnetically induced electric fields that may be used in orientation behaviors.

Olfactory morphology and physiology of elasmobranchs

Results indicate parallels in olfactory physiology between elasmobranchs and teleost fishes, similar to that previously described in teleosts with neutral amino acids eliciting significantly greater responses than others.

A morphological analysis of the ampullae of Lorenzini in selected skates (Pisces, Rajoidei)

  • W. Raschi
  • Environmental Science, Biology
    Journal of morphology
  • 1986
A comparison of the ampullae of Lorenzini among 40 species of skates (Rajoidei) demonstrates a close relationship between inferred electroreceptive capabilities and feeding mechanisms. Three general

The Gustatory System of Elasmobranchs: morphology, distribution and development of oral papillae and oral denticles

The morphology and distribution of taste buds and denticles in a range of elasmobranchs (selachians and batoids) is examined both during development and in adults, revealing that taste papillae increase in diameter as the animal grows.
...