Influences of marine adhesive bacteria on settlement and metamorphosis of <i>Styela conopus</i> Savigny larvae

ZHANG Zhao-xia; KE Cai-huan; FENG Dan-qing; HUANG Ying; ZHOU Shi-qiang; L&#220; Jia-yang

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Article Navigation > Haiyang Xuebao > 2005 > 27(5): 96-102

ZHANG Zhao-xia, KE Cai-huan, FENG Dan-qing, HUANG Ying, ZHOU Shi-qiang, LÜ Jia-yang. Influences of marine adhesive bacteria on settlement and metamorphosis of Styela conopus Savigny larvae[J]. Haiyang Xuebao, 2005, 27(5): 96-102.

Citation:

ZHANG Zhao-xia, KE Cai-huan, FENG Dan-qing, HUANG Ying, ZHOU Shi-qiang, LÜ Jia-yang. Influences of marine adhesive bacteria on settlement and metamorphosis of Styela conopus Savigny larvae[J]. Haiyang Xuebao, 2005, 27(5): 96-102.

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Influences of marine adhesive bacteria on settlement and metamorphosis of Styela conopus Savigny larvae

Department of Oceanography, Xiamen University, Xiamen 361005, China;Institute of Subtropic Oceanography, Xiamen 361005, China;Key Laboratory of Marine Environmental Science of the Ministry of Education, Xiamen University, Xiamen 361005, China

Received Date: 2004-08-20
Rev Recd Date: 2004-12-01

Abstract

Abstract

One hundred and eighty bacteria isolated from surface of tunics of Styelaconopus Savigny,Styela plicata Lesueur,Molgula manhattensis Delay and their adhesive substrates,as well as 110 ones from nearby water,were investigated.On the basis of their morphological,biochemical and physiological characteristics,these bacteria belong to 10 genera and over 60% bacteria are Gram-negative.In bacteria from surfaces of sea squirtps tunics and their adhesive substrates,dominant colonies are Pseudomonas,while Aeromonas are primary in bacteria from water.Nine strains were screened out from 180 bacteria for their greatability of attachment.Then these 9 bacteria were cultured to form different bacterial films respectively,to gether with a mixed artificial film made of all 9 strains so that influences of these ar tificial films on set tlement and metamo rphosis of Styel a conopus Savigny larvae were studied.It is revealed that different types of artificial films have dissimilar effects on set tlement and met amorphosis of Styela conopus Savigny larvae.On one hand,5 kinds of bact erial films,H6,H9,H13,H15 and the mixed film remarkably stimulate larva attachment,while H4 strongly inhibited and others are without evident influences.On the other hand,in 10 bact erial films,H4,H7,and H9 obviously restrain metam orphosis of lava of Styela conops Savigny,but more larva are metamor phic when they grew on H13 and the mixed bacterial film.It illustrated that set tlement and met amorphosis of Styel a conop us Savigny larva were two correspondingly independent processes during these two courses,different effects were shown when larva grew on the same bacterial film.
- bacterial film,
- ascidian,
- larvae,
- settlement

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References(33)

References

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