Reproduction in Balanus amphitrite Darwin (Cirripedia: Thoracica); influence of temperature and food concentration
IR@NIO: CSIR-National Institute Of Oceanography, Goa
View Archive Info| Field | Value | |
| Creator |
Desai, D.V.
Anil, A.C. Venkat, K. |
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| Date |
2006-06-28T07:47:39Z
2006-06-28T07:47:39Z 2006 |
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| Identifier |
Marine Biology, vol.149(6), 1431-1441p.
http://drs.nio.org/drs/handle/2264/163 |
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| Description |
Balanus amphitrite, an acorn barnacle is distinctly euryhaline and eurythermal, and a dominant fouling organism found in warm and temperate waters through out the world. In this study the influence of temperature and food concentration on the reproductive biology of this species collected from a tropical habitat was evaluated. Adult barnacles were maintained at 20, 25 and 30°C temperatures at different concentrations of food (50, 100, 150 and 200 Artemia ind-1 day-1). In this previously believed obligatory cross-fertilizing hermaphrodite, self-fertilization was observed. The rise in temperature from 20 to 30°C resulted in a longer interbreeding interval (6 to 7 days, 200 Artemia ind-1 day-1; 11 to 13 days, 50 Artemia ind-1 day-1). Computed carbon gained through feeding during the interbreeding interval indicated an inverse relationship to the temperature. At 20°C, although a greater amount of carbon was gained through feeding, the numbers of larvae produced were five fold less when compared to those raised at 30°C. At 20°C, 2.3µg C was required to produce a single larva, whereas at 30°C it was 0.4µg C. A rise in rearing temperature also influenced the molting rate positively. Observations on temporal variation in the gonad development of this species in a tropical coastal environment influenced by the monsoons indicated gonad development to be related positively to chlorophyll a concentration.
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853444 bytes
application/pdf |
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| Language |
en
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| Publisher |
Springer
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| Rights |
An edited version of this paper is published by Springer. Copyright [2006] Springer
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| Title |
Reproduction in Balanus amphitrite Darwin (Cirripedia: Thoracica); influence of temperature and food concentration
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| Type |
Article
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