Signalling in planktonic larvae
Article Abstract:
The cyclic AMP and inositol trisphosphate messenger pathways correlate to deepen odor discrimination and can augment the chemo-sensory responsiveness of planktonic marine in vertebrate larvae to chemical signals called morphogens. Several benthic marine invertebrates multiply into large members of small larvae dispersed in the plankton. The chemosensory recognition of exogenous chemical signals of specific recruiting surfaces causes substratum-specific settlement of larvae from the plankton in many species. The correlation between larval signalling pathways, determined by different environmental signs, helps in recognizing and selecting habitats for metamorphosis, and in explaining the temporal and spatial variability in recruiting some marine species.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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The planktonic life of octopuses
Article Abstract:
Octopodes can turn their funnel tube in any direction for jetting and their maximum jetting speed for backwards escape increases until they are 30 days old and then becomes constant, according to studies of the swimming activity of planktonic octopodes. Video techniques were used to measure the swimming activity of octopodes aged between 1 to 60 days. This increase in speed occurs in the transition phase from squid-like form to octopus form. Comparatively, cruising speed decreases during this phase.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Sulphur, climate and the microbial maze
Article Abstract:
Biogenic dimethyl sulphide is implicated in the global sulphur cycle and could be an important factor in climate regulation. It is formed when dimethylsulphoniopropionate (DMSP) is degraded by bacteria and algae. The process used by algae to make DMSP was previously unknown but new research of algae in the marine environment shows that it involves transamination. It is believed that DMSP is converted into acrylic acid to protect marine algae from predation by grazing protozoon.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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