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  • 1
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    Seawater carbonate chemistry and biological processes during experiments with clownfish Amphiprion percula, 2009 (2009)
    PANGAEA
    In:  Supplement to: Munday, Philip L; Dixson, Danielle L; Donelson, Jennifer M; Jones, G P; Pratchett, M S; Devitsina, G V; Doving, K B (2009): Ocean acidification impairs olfactory discrimination and homing ability of a marine fish. Proceedings of the National Academy of Sciences of the United States of America, 106(6), 1848-1852, https://doi.org/10.1073/pnas.0809996106
    Details
    Publication Date: 2024-03-15
    Description: The persistence of most coastal marine species depends on larvae finding suitable adult habitat at the end of an offshore dispersive stage that can last weeks or months. We tested the effects that ocean acidification from elevated levels of atmospheric carbon dioxide (CO2) could have on the ability of larvae to detect olfactory cues from adult habitats. Larval clownfish reared in control seawater (pH 8.15) discriminated between a range of cues that could help them locate reef habitat and suitable settlement sites. This discriminatory ability was disrupted when larvae were reared in conditions simulating CO2-induced ocean acidification. Larvae became strongly attracted to olfactory stimuli they normally avoided when reared at levels of ocean pH that could occur ca. 2100 (pH 7.8) and they no longer responded to any olfactory cues when reared at pH levels (pH 7.6) that might be attained later next century on a business-as-usual carbon-dioxide emissions trajectory. If acidification continues unabated, the impairment of sensory ability will reduce population sustainability of many marine species, with potentially profound consequences for marine diversity.
    Keywords: Alkalinity, total; Amphiprion percula; Animalia; Aragonite saturation state; Behaviour; Bicarbonate ion; Calcite saturation state; Calculated by titration using APHA-AWWA-WEF method. Radiometer pH/Tritrator; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chordata; Containers and aquaria (20-1000 L or 〈 1 m**2); EPOCA; Estimated; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Laboratory strains; Nekton; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Oxygen, gas; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter (TPS WP80); Salinity; see Munday et al. (2009); Single species; Temperature, water; Time; WTW Oxi 340i probe
    Type: Dataset
    Format: text/tab-separated-values, 70 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Social inhibition of maturation in females of the temperate wrasse Pseudolabrus celidotus and a comparison with the blennioid Tripterygion varium (1980)
    Springer
    Marine biology 59 (1980), S. 247-256 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In two temperate reef fish, Pseudolabrus celidotus (Bloch and Schneider) and Tripterygion varium (Bloch and Schneider) studied near Leigh, New Zealand, most spawning activity was concentrated during the first 2 months of spawning seasons which lasted about 5 months. In P. celidotus, maturation and spawning of first-year females (0+) was delayed with respect to older (≥1+yr) females. Within the 0+ age class, the minimum size of maturation declined as the spawning season proceeded. However, in all females of T. varium, ripening and spawning took place over the same time ranges. Observations on the seasonal patterns of female aggression suggested that larger female P. celidotus were socially inhibiting the maturation of small females. The level of interaction was high compared to that in T. varium, and reached a peak over the onset of the spawning season. This hypothesis was tested by the removal of larger (≥1+yr) female P. celidotus from a field population. The remaining 0+ females increased in ovary weight and matured earlier than those in an undisturbed area. We argue from this experiment that it is of advantage for P. celidotus females to spawn early in the season and of advantage to inhibit other females from doing so. Two possible reasons are suggested, the first applying to sexchanging species such as P. celidotus, the second to temperate-water fishes in general.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00404748
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  • 3
    Electronic Resource
    Electronic Resource
    Interspecific territoriality and competition for food between the reef fishes Forsterygion varium and Pseudolabrus celidotus (1983)
    Springer
    Marine biology 76 (1983), S. 95-104 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Long-term behavioural studies were made of the blennioid fish Forsterygion varium and the wrasse Pseudolabrus celidotus in the Cape Rodney-Okakari Point Marine Reserve in New Zealand. Both male and female F. varium defended small 1 to 2 m2 territories from the wrasse all year round, althoughl aggressive encounters were most frequent from December to April. Only Large P. celidotus (≧180 mm standard length) were observed to dominate the blenny in interactions. Defence of nests, which were found only on the territories of males between May and October, did not explain the distribution of F. varium aggression between the sexes and seasons. An extensive overlap in the categories and size of prey eaten suggested that protection of food was a major function of F. varium territoriality. F. varium was most frequently aggressive toward P. celidotus of an intermediate size (110 to 160 mm SL) and exhibited greatest overlap in diet with wrasses in this size lange. This dnected the study toward examining the effect of F. varium on the feeding activity of P. celidotus. Within a shallow, Leterogeneous reef habitat, feeding pressure by P. celidotus (bites/are/time) was inversely related to the density of F. varium. Removal of F. varium from small 5x5 m quadrats resulted in large increases in wrasse feeding pressure, suggesting that the blenny influences the foraging of wrasses within their home ranges. When F. varium were removed from the entire home ranges of five 1+yr (110 to 130 mm SL) P. celidotus, these fish exhibited relative increases in both feeding rate and foraging time. The results suggest that P. celidotus grow through a period during which individuals compete with F. varium for food, adding support to the contention that territoriality in F. varium functions to preserve its food supply.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393060
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  • 4
    Electronic Resource
    Electronic Resource
    Contribution to the biology of the redbanded perch, Ellerkeldia huntii (Hector), with a discussion on hermaphroditism (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 17 (1980), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The presence of oocytes in the testes of several males indicates that the redbanded perch Ellerkeldia huntii exhibits protogynous hermaphroditism. All males appear to be secondary in origin; however the structure of the testes differ from most other protogynous serranids. In samples collected from the Poor Knights Is., New Zealand, males outnumbered females 2.7: 1 (n= 52). The numbers in each sex were equal until a length of 100–110 mm, after which the male proportion increased to 100%. The oldest female was aged 2+ years, whereas males were found as old as 5+ years. There were no colour differences associated with sex. The mean testes weight was only 7% of the mean ovary weight. Both sexes grew at the same rate. Observations during December indicated that although many individuals were solitary, some were paired. The larger individuals of pairs were males, the smaller females. Individuals foraged in the algal canopy on gammarid amphipods and mysid shrimps. The average range of movements was only 2·2 m2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1980.tb02753.x
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  • 5
    Electronic Resource
    Electronic Resource
    Rotation of Imidazole in the Solid State and its Significance in deciding the Nature of Charge Migration in Biological Materials (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 672-673 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To maintain a net flow of charge along the direction of the electric field, it is usually necessary for individual molecules, after they have transferred a proton, to undergo rotation so as to be suitably disposed for the next proton to be accepted. Fig. 1, which is based on a notion first ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218672a0
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  • 6
    Electronic Resource
    Electronic Resource
    Self-recruitment in a coral reef fish population (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 402 (1999), S. 802-804 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The question of how far the larvae of marine organisms disperse is fundamental to an understanding of their population dynamics, the management of exploited species and the conservation of marine biodiversity. It is generally assumed that larvae disperse away from their natal population so ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/45538
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  • 7
    Electronic Resource
    Electronic Resource
    RECRUITMENT AND THE LOCAL DYNAMICS OF OPEN MARINE POPULATIONS (1996)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 27 (1996), S. 477-500 
    Details
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract The majority of marine populations are demographically open; their replenishment is largely or exclusively dependent on a supply of juveniles from the plankton. In spite of much recent research, no consensus has yet been reached regarding the importance of recruitment relative to other demographic processes in determining local population densities. We argue 1. that demographic theory suggests that, except under restrictive and unlikely conditions, recruitment must influence local population density to some extent. Therefore, 2. the question as to whether the size of a particular population is limited by recruitment is misguided. Finally, 3. the effect of recruitment on population size can be difficult to detect but is nonetheless real. A major weakness of most existing studies is a lack of attention to the survival of recruits over appropriate scales of time and space. Acknowledgment of the multifactorial determination of population density should guide the design of future experimental studies of the demography of open populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ecolsys.27.1.477
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  • 8
    Electronic Resource
    Electronic Resource
    DR. THOMAS SHORT, AN EIGHTEENTH-CENTURY WRITER ON POPULATION (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 8 (1956), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1956.tb00467.x
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  • 9
    Electronic Resource
    Electronic Resource
    Convulsant and anticonvulsant barbiturates. 1. Molecular conformations from classical potential-energy calculations (1980)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 23 (1980), S. 444-448 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00178a017
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of NaCl on the carboxylating activity of Rubisco from Tamarix jordanis in the presence and absence of proline-related compatible solutes (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 90 (1994), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The effects of NaCl on the carboxylating activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) were investigated in the presence of two proline-related analogues found in Tamarix jordanis. N-methyl-L-proline ameliorated the inhibition of the activity of Rubisco by NaCl. Full amelioration was reached at 200 mM of this protectant. Protection by N-methyl-trans-4-hydroxy-L-proline was less effective. Significant differences in the Rubisco protein content from different populations of Tamarix jordanis were observed. Moreover, higher carboxylation rates were obtained for Rubisco preparations from plants that had been grown in saline media. These results are discussed with respect to the adaptation strategies of Tamarix jordanis to saline conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1994.tb02211.x
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