Feeding and nutritional ecology of the sea urchins Echinometra lucunter (Linnaeus, 1758) and Arbacia punctulata (Lamarck, 1816) Echinodermata: Echinoidea) : the importance of animal foods /
(crab and squid) material than from algae or mixed food
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (crab and squid) material than from algae or mixed food a preference in the field for tiny one particular food item. absorption efficiencies for protein, these results lend absorption of protein was more efficient from invertebrate Analysis of gut contents of Echinometra lucunter and Arbacia animal material by urchins may enhance growth and bryozoans--than E. lucunter. Where these two species live collected from two different locations (South Padre Island demonstrated. The different natural diets of A. punctulata diet treatment. Absorption of lipid occurred at nearly the diets offered were not adequate to maintain or increase gonad greater amounts of animal material-- barnacles, mollusks, and greater number of successful movements towards food items items. Absorption of carbohydrate was highest for the algal jetty and the Port Aransas jetty) can probably be attributed maximum in urchins with a test diameter size of 5 cm. Field modes of feeding by urchins of the same species were of E. lucunter for three different diets showed that on the nearby jetty. Determination of digestion coefficients partitioning appears to be occurring. Different behavioral plant material and less algal material than the same species punctulata revealed that A. punctulata consumes significantly reproductive fitness. Gonad indices calculated at the same efficiency for all three diets. Based on the high support to the idea that the consumption of invertebrate or sympatrically on the South Padre Island jetty, niche termination of the feeding experiment indicated that the than A. punctulata. Nocturnal chemoreception of prey items the South Padre Island rock rubble area ingested more higher- to food availability. Similarly, E. lucunter collected from trials of chemoreception showed that E. lucunter exhibited a was demonstrated by E lucunter. E. lucunter did not exhibit weight. Gonad indices tended to drop off after reaching a |
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| Item Description: | "Major subject: Zoology". Vita. |
| Physical Description: | xi, 65 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |