Download Grzimek's Animal Life Encyclopedia. Fishes 1 by Michael Hutchins PDF

By Michael Hutchins

V. 1. decrease metazoans and lesser deuterostomes / Neil Schlager, editor -- v. 2. Protostomes / Neil Schlager, editor -- v. three. bugs / Neil Schlager, editor -- v. 4-5. Fishes I-II / Neil Schlager -- v. 6. Amphibians / Neil Schlager, editor -- Reptiles / Neil Schlager, editor -- v. 8-11. Birds I-IV / Donna Olendorf, venture editor -- v. 12-16. Mammals I-V -- v. 17. Cumulative index.; ''This is a revised and up-to-date version of 1 of the main authoritative and entire assets at the world's animals. just like the 1st version written via famous zoologist Bernard Grzimek and released in 1972, the second one variation covers every kind of animals in geographic components around the globe. It contains fine quality photos and illustrations and a entire index to all volumes.''--''The most sensible 20 Reference Titles of the Year,'' American Libraries, may well 2004

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As in other vertebrates, the neurocranium results from the fusion of many bones during development. The primary pur16 pose of the neurocranium is to protect and support the brain. In addition, many species have a bone called the vomer, which forms part of the lower surface of the neurocranium, bears teeth, and aids in feeding. The structure and function of fish jaws are astonishingly diverse, reflecting a wide array of feeding strategies and prey types that fishes exploit for food. This diversity results in large part from the increased mobility in the lower and upper jaws as well as the ability of fishes to incorporate other parts of their cranial anatomy into the feeding apparatus.

This combination of movements simultaneously leads to jaw protrusion, suction of water, and movement of the prey into the mouth. The functional organization of jaw morphological features for feeding is a trade-off between the velocity of the movement and the force exerted. A striking example of a high-velocity feeding event involving extremely mobile jaws is illustrated by the slingjaw wrasse (Epibulus insidiator), aptly named for its ability to sling its jaws away from the rest of its head during the capture of evasive prey.

Smaller, parasitic males latch onto females with their mouths and fuse permanently with the female’s body. The male obtains nutrition through the female’ bloodstream and provides sperm for reproduction. Males of the seahorses and pipefishes 26 (family Syngnathidae) have pouches or specialized body surfaces that hold eggs while the embryos are developing. Despite these variations in modes of reproduction, the basic reproductive structures are similar among taxa, with eggs being produced in the ovaries and sperm being produced in the testes.

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