J Stanley Cobb; Bruce F Phillips's The Biology and Management of Lobsters: Ecology and PDF


By J Stanley Cobb; Bruce F Phillips

ISBN-10: 0080917348

ISBN-13: 9780080917344

This two-volume paintings offers a precis and evaluate of the present country of lobster biology, ecology, body structure, habit, and administration. It emphasizes the biology of clawed lobsters (Nephropidae) and spiny lobsters (Palinuridae), with realization additionally given to slipper lobsters (Scyllaridae) and coral lobsters (Synaxidae).The first bankruptcy of quantity 1 offers an summary of the overall features of lobster biology Read more...

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Additional resources for The Biology and Management of Lobsters: Ecology and Management Vol. 2

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The larvae were much less responsive to changes in light intensity than to changes in pressure. No clear phototactic or photopathic behavior was observed in a vertical plane. Larvae of the two species showed only slight differences in their behavioral responses, and these differences cannot account for the relatively rare occurrence of H. gammarus larvae in plankton collections. The actual swimming behavior and distribution of lobster larvae in nature is now well known. Ennis (1973b, 1975a) released laboratory-reared larvae of H.

Templeman (1936) determined the relationship between temperature and duration of each of the four larval stages of H. americanus over a temperature range of 6°-24°C. At 10°11 °C, the newly hatched larvae required 60 days to reach the fourth stage in full strength sea water. 0 From Sastry and Zeitlin-Hale, 1977. 21 1. Larval E c o l o g y temperature typically experienced in the field (Sherman and Lewis, 1967; Scar­ ratt, 1968). At 19°-20°C, the time was reduced to about 15 days. At all tempera­ tures, the duration of stage IV larvae was significantly longer than the duration of the earlier stages.

On several occasions, investigators have assigned a series of larvae to the most common adult species occurring in a particular geographic region. Such questionable identifications are often accepted and perpetuated by subsequent investigators. Specific relationship between phyllosoma larvae and an adult form can only be made by culturing the larvae from eggs of known parentage, or by observing metamorphosis of final stage larvae to identifiable postlarvae. A few very large "giant" phyllosoma larvae have been reported.

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The Biology and Management of Lobsters: Ecology and Management Vol. 2 by J Stanley Cobb; Bruce F Phillips

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