| Records |
| Author |
Shimose, T.; Yokawa, K.; Tachihara, K. |
| Title |
Higher Catch Rates Around the Full Moon for Blue Marlin, Makaira Nigricans, in a Diurnal Trolling Fishery |
Type |
Journal Article |
| Year |
2013 |
Publication |
Bulletin of Marine Science |
Abbreviated Journal |
Bms |
| Volume |
89 |
Issue |
3 |
Pages |
759-765 |
| Keywords |
fish; blue marlin; Makaira nigricans; Moon; moonlight; Feeding Behavior |
| Abstract |
The relationship between lunar phase and catch rates of blue marlin, Makaira nigricans Lacépède, 1802, in a diurnal trolling fishery at Yonaguni Island, southwestern Japan, was investigated. The mean catch per unit effort of blue marlin to lunar day was expressed by a periodic regression and significantly increased around the full moon. The stomach content index also significantly increased around the full moon in small blue marlin (<200 cm lower jaw–fork length), indicating that diurnal feeding activities of blue marlin increased around the full moon, especially for smaller individuals. The diurnal feeding activity is thought to be influenced by the nighttime activities of blue marlin and/or prey movements. |
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0007-4977 |
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IDA @ john @ |
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63 |
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| Author |
Becker, A.; Whitfield, A.K.; Cowley, P.D.; Järnegren, J.; Naesje, T.F.; Crispo, E. |
| Title |
Potential effects of artificial light associated with anthropogenic infrastructure on the abundance and foraging behaviour of estuary-associated fishes |
Type |
Journal Article |
| Year |
2013 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
| Volume |
50 |
Issue |
1 |
Pages |
43-50 |
| Keywords |
fish; biology; ecology |
| Abstract |
As a consequence of a positive phototaxic response, the findings of this study suggest that artificial light often associated with man-made structures has the potential to alter fish communities within urban estuarine ecosystems by creating optimal conditions for predators. Future coastal developments should consider the ecological implications of lighting on aquatic communities. We recommend that lighting be minimized around coastal infrastructure and the use of red lights, which have limited penetration though water, be considered. |
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0021-8901 |
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IDA @ john @ |
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64 |
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Kamrowski, R.L.; Limpus, C.; Jones, R.; Anderson, S.; Hamann, M. |
| Title |
Temporal changes in artificial light exposure of marine turtle nesting areas |
Type |
Journal Article |
| Year |
2013 |
Publication |
Global Change Biology |
Abbreviated Journal |
Glob Chang Biol |
| Volume |
20 |
Issue |
8 |
Pages |
2437-2449 |
| Keywords |
GIS analysis; artificial light; conservation planning; marine turtles; population resilience; temporal change |
| Abstract |
Artificial light at night poses a significant threat to multiple taxa across the globe. In coastal regions, artificial lighting close to marine turtle nesting beaches is disruptive to their breeding success. Prioritizing effective management of light pollution requires an understanding of how the light exposure of nesting areas changes over time in response to changing temporal and spatial distributions of coastal development. We analyzed multitemporal, satellite night-light data, in combination with linear mixed model analysis, to determine broadscale changes in artificial light exposure at Australian marine turtle nesting areas between 1993 and 2010. We found seven marine turtle management units (MU), from five species, have experienced significant increases in light exposure over time, with flatback turtles nesting in east Australia experiencing the fastest increases. The remaining 12 MUs showed no significant change in light exposure. Unchanging MUs included those previously identified as having high exposure to light pollution (located in western Australia and southern Queensland), indicating that turtles in these areas have been potentially exposed to high light levels since at least the early nineties. At a finer geographic scale (within-MU), nine MUs contained nesting areas with significant increases in light exposure. These nesting areas predominantly occurred close to heavily industrialized coastal areas, thus emphasizing the importance of rigorous light management in industry. Within all MUs, nesting areas existed where light levels were extremely low and/or had not significantly increased since 1993. With continued coastal development, nesting females may shift to these darker/unchanging 'buffer' areas in the future. This is valuable information that informs our understanding of the capacity and resilience of marine turtles faced with coastal development: an understanding that is essential for effective marine turtle conservation. |
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School of Earth and Environmental Sciences, James Cook University, Townsville, QLD, 4811, Australia |
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English |
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1354-1013 |
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PMID:24353164 |
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IDA @ john @ |
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73 |
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| Author |
Vignoli, L.; Luiselli, L. |
| Title |
Better in the dark: two Mediterranean amphibians synchronize reproduction with moonlit nights |
Type |
Journal Article |
| Year |
2013 |
Publication |
Web Ecology |
Abbreviated Journal |
Web Ecol. |
| Volume |
13 |
Issue |
1 |
Pages |
1-11 |
| Keywords |
animals; amphibians; Hyla intermedia; Rana dalmatina; *Reproduction; reproductive strategies; Moon; moon phase; moonlight |
| Abstract |
In Amphibians, both positive and negative correlations between activity and full moon phase have been observed. In this study, we present data for two anuran species (Hyla intermedia and Rana dalmatina) studied in a hilly Mediterranean area of central Italy. We analysed, in a two-year survey, the relationships between the number of egg clutches laid each night and the moon phases by means of circular statistics. Moreover, the studied species exhibited clear oviposition site selection behaviour influenced, at least in H. intermedia, by moon phases. We observed the occurrence of an avoidance effect by amphibians for oviposition and specific egg-laying behaviour during moon phases around the full moon. This apparent lunar phobia was evident in both species when yearly data were pooled. On the other hand, while this pattern continued to be also evident in H. intermedia when single years were considered, in R. dalmatina it stood just in one year of study. Nonetheless, during cloudy nights, when moonlight arriving on the ground was low, the frogs' behaviour was similar to that observed in new moon phases. We interpreted the observed pattern as an anti-predatory strategy. Overall, comparisons between our own study and previous research suggest that there was insufficient evidence to establish any unequivocal patterns and that further research in this regard is needed. |
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1399-1183 |
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IDA @ john @ |
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80 |
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| Author |
Grant, R.; Halliday, T.; Chadwick, E. |
| Title |
Amphibians' response to the lunar synodic cycle--a review of current knowledge, recommendations, and implications for conservation |
Type |
Journal Article |
| Year |
2013 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
Behavioral Ecology |
| Volume |
24 |
Issue |
1 |
Pages |
53-62 |
| Keywords |
amphibians; circular statistics; light; lunar cycle; moon phase; predator avoidance; reproductive synchronization; moonlight |
| Abstract |
The way in which amphibians respond to the geophysical changes brought about by the lunar synodic cycle is a neglected area of their ecology, but one which has recently generated interest. Knowledge of how amphibians respond to lunar phase is of intrinsic interest and also may be important for conservation and monitoring of populations. We surveyed the literature on amphibians’ responses to the lunar cycle and found 79 examples where moon phase in relation to amphibian behavior and ecology had been studied, across diverse amphibian taxa. Of the examples reviewed, most of them show some type of response to lunar phase, with only a few species being unaffected. We found that there is no significant difference between the numbers of species which increase, and those that decrease activity or reproductive behavior (including calling) during a full moon. The responses to the lunar cycle can not be generalized across taxonomic group, but instead are highly species specific and relate directly to the species’ ecology. The primary reasons for changes in amphibian behavior in response to the lunar cycle appear to be temporal synchronization of breeding and predator avoidance. Responses to changes in prey availability, facilitation of visual signalling and use of lunar cues in navigation and homing are less prevalent but merit further investigation. Comparisons between studies are hampered by differences in field and analytical methods; we therefore make a number of recommendations for future collection and analysis of data related to lunar phase. |
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1045-2249 |
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no |
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IDA @ john @ |
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81 |
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