Download Grzimek's Encyclopedia 2nd Ed - Vol 4 - Fishes I by Michael Hutchins PDF

By Michael Hutchins

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Extra info for Grzimek's Encyclopedia 2nd Ed - Vol 4 - Fishes I

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Bulletin of the Museum of Comparative Zoology 150 (1983): 95–197. Grzimek’s Animal Life Encyclopedia Vol. 4: Fishes I Evolution and systematics Resources Maisey, J. G. ” Cladistics 2 (1986): 201–256. Sansom, I. , M. M. Smith, and M. P. Smith. ” Nature 379 (1996): 628–630. C. -L. -X Hu, L. Chen, J. Han, M. -Z Chen. ” Nature 402 (1999): 42–46. Young, G. C. ” Journal of Vertebrate Paleontology 17 (1997): 1–25. Organizations American Society of Ichthyology and Herpetology. Dept of Biological Sciences, College Of Arts & Science, Florida International University, North Miami, FL 33181 USA.

Illustration by Jonathan Higgins) Grzimek’s Animal Life Encyclopedia Close-up of a Port Jackson shark’s (Heterodontus portusjacksoni) face. Port Jackson sharks feed primarily on invertebrates such as sea urchins, crabs, and starfish. (Photo by Jeffrey L. Rotman/Corbis. ) shells. The difference in feeding strategy is reflected in the lengths of the lower jawbones, with long, slender bones being low force but high velocity and short, thick bones providing strong biting forces but less speed during jaw closing.

The autonomic nervous system, which includes a series of ganglia lateral to the spinal cord, receives input from the central nervous system to adjust the function of numerous tissues. Blood pressure is regulated through vasodilation or vasoconstriction, affecting numerous functions from digestion to oxygen uptake at the gills. The endocrine system similarly has broad effects on physiology, but through hormones rather than nerve activity. Controlled primarily through the hypothalamus and the pituitary, the endocrine system has many functions, including osmoregulation, growth, and metabolism.

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