Marine Biology

Download Biology of the lobster Homarus americanus by Jan Robert Factor PDF

By Jan Robert Factor

The commonly dispensed American Lobster, Homarus americanus, which inhabits coastal waters from Canada to the Carolinas, is a vital keystone species. A helpful resource of source of revenue, its abundance or rarity frequently displays the healthiness of ecosystems occupied by means of those crustaceans. This entire reference brings jointly all that's recognized of those interesting animals. it's going to entice biologists, zoologists, aquaculturalists, fishery biologists, and researchers operating with different lobster species, in addition to neurobiologists trying to find additional information at the version approach they so usually use.

  • First finished e-book at the American lobster given that Herrick's century-old monograph
  • Provides an important historical past for neurobiologists who use this crustacean as a version organism
  • Contains a finished remedy of the lobster fishery and its management

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Extra resources for Biology of the lobster Homarus americanus

Example text

5 e-e-o 1 0 ~ 9 2 0 ...... 12 ~ . . . 15 ~ ...... 5 I 0 ’ I 10 ’ I 20 ’ I 30 ’ I ’ 40 I ’ 50 I ’ 60 I 70 ’ I 80 ’ I 90 ’ I 100 ’ I 110 ’ I 120 TIME ( d a y s ) FIGURE 1 Growth of larval and postlarval lobsters in relation to temperature. The five data points for each curve represent the mean carapace length at the accumulated mean stage duration for larvae (stages I-III), the postlarva (stage IV), and the first juvenile (stage V). The curves were drawn by eye based on data from MacKenzie (1985).

Suborbital margin Smooth Spined 12. Tubercles Z and ca distinct Only cadistinct Z and caindistinct 13. Rostrum Short Moderate length Long and attenuate 14. 2 (Nixon, 1992). Upper numbers of hash marks on internodes represent characters; lower numbers represent the state of each. Tree length, 19; consistency index, 100; average consistency index, 100. variability are present at 44 loci encoding electrophoretically detectable proteins a m o n g eight populations of H. , 1975). Genetic variation is concentrated at only eight loci, with just five loci having proportions of heterozygotes greater than 20%.

Zool. Scr. 10, 265-271. Bate, C. S. On Synaxes, a new genus of Crustacea. Ann. Mag. Nat. , Ser. 5 7, 220-228 + plate 14. Bate, C. S. (1888). S. Challenger during the Years 1873-76. Rep. Sci. Res. S. Challenger, Zool. 24. 20 AUSTIN B. WILLIAMS Berrill, No J. (1951). " Dodd, Mead, New York. Berrill, N. J. (1956). " Fawcett World Library, New York. Birstein, J. A. (1958). Ein Vertreter der/iltesten Ordo der Crustacea Decapoda, Protoclytiopsis antiqua gen. nov. sp. nov. aus dem Perm West-Siberiens.

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