scholarly journals Diel movement patterns of ocean sunfish Mola mola off southern California

2004 ◽  
Vol 266 ◽  
pp. 245-253 ◽  
Author(s):  
DP Cartamil ◽  
CG Lowe
Keyword(s):  
Southern California ◽  
Movement Patterns ◽  
Ocean Sunfish ◽  
Mola Mola ◽  
Diel Movement

scholarly journals Ecology of the Ocean Sunfish, Mola mola, in the southern California Current System

2015 ◽  
Vol 471 ◽  
pp. 64-76 ◽  
Author(s):  
Tierney M. Thys ◽  
John P. Ryan ◽  
Heidi Dewar ◽  
Christopher R. Perle ◽  
Kady Lyons ◽  
...  
Keyword(s):  
Southern California ◽  
Current System ◽  
California Current ◽  
California Current System ◽  
Ocean Sunfish ◽  
Mola Mola

Diel movement patterns and habitat preferences of the common thresher shark (Alopias vulpinus) in the Southern California Bight

2010 ◽  
Vol 61 (5) ◽  
pp. 596 ◽  
Author(s):  
D. Cartamil ◽  
N. C. Wegner ◽  
S. Aalbers ◽  
C. A. Sepulveda ◽  
A. Baquero ◽  
...  
Keyword(s):  
Southern California ◽  
Habitat Preferences ◽  
Movement Patterns ◽  
Southern California Bight ◽  
Depth Sensing ◽  
Vertical Movements ◽  
Thresher Shark ◽  
The Common ◽  
Diel Movement ◽  
Alopias Vulpinus

The common thresher shark, Alopias vulpinus, is the basis of the largest commercial shark fishery in California waters. We used acoustic telemetry to determine the diel movement patterns and habitat preferences of this species in the Southern California Bight (SCB), where commercial fishing for the common thresher shark is concentrated. Eight common threshers (fork length: 122–203 cm) were tagged with temperature and depth-sensing acoustic transmitters and tracked for periods ranging from 22 to 49 h. Tracked sharks preferentially utilized deep offshore waters, and avoided shallower waters over the continental shelf. Mean rate of movement (ROM ± s.d.) was 2.15 ± 0.46 km h−1. ROM and angular concentration (r, a measure of relative linearity) both showed a strong daytime pattern, with highest values at dawn that decreased throughout the day, whereas nocturnal ROM and r were less variable. Daytime vertical movements consisted of either vertical excursions below the thermocline or relatively level swimming within the upper portion of the thermocline. Nocturnally, all sharks remained within the mixed layer. These findings suggest that the common thresher shark is primarily a daytime predator, and have relevance for estimating how the alteration of the set depth of fishing-gear could affect catch rates of this species in the SCB.

Stable isotopes challenge the perception of ocean sunfish Mola mola as obligate jellyfish predators

2011 ◽  
Vol 80 (1) ◽  
pp. 225-231 ◽  
Author(s):  
J. Syväranta ◽  
C. Harrod ◽  
L. Kubicek ◽  
V. Cappanera ◽  
J. D. R. Houghton
Keyword(s):  
Stable Isotopes ◽  
Ocean Sunfish ◽  
Mola Mola

Occurrence of ocean sunfish, Mola mola near fronts in the western English Channel

2002 ◽  
Vol 82 (5) ◽  
pp. 927-928 ◽  
Author(s):  
D.W. Sims ◽  
E.J. Southall
Keyword(s):  
Water Masses ◽  
English Channel ◽  
Ocean Sunfish ◽  
Total Length ◽  
Mola Mola ◽  
Mixed Water ◽  
Surface Occurrence

Surface occurrence of ocean sunfish (Mola mola) was recorded during summer (May–September) in the western English Channel off Plymouth over a six-year period between 1995 and 2001. Fifteen individuals of between 0.5–0.7 m estimated total length were sighted during 1651 hours of observation. Nearly all sightings (93%) occurred in June and July in water between 13 and 17°C. Sunfish were mostly associated with frontal and stratified water masses (86%) rather than in cooler, mixed water.

scholarly journals The Ocean Pout, Zoarces americanus, and the Ocean Sunfish, Mola mola: Additions to the Marine Ichthyofauna of the Lower Saint John River System, New Brunswick, with a Summary of Marine Fish Reported from the Estuary

2013 ◽  
Vol 127 (1) ◽  
pp. 38 ◽  
Author(s):  
Donald F. McAlpine
Keyword(s):  
New Brunswick ◽  
River System ◽  
Marine Species ◽  
Sensu Stricto ◽  
Marine Fishes ◽  
Ocean Sunfish ◽  
System A ◽  
Mola Mola ◽  
Saint John ◽  
The Status

Recent records for the Ocean Pout, Zoarces americanus (collected 11 February 2011), and the Ocean Sunfish, Mola mola (photograph taken 24 June 2012), in the lower Saint John River system, New Brunswick, add to the list of marine fishes reported from this oceanographically unique estuary system. A total of 62 species of strictly freshwater, anadromous, catadromous, and marine fishes have now been recorded in the Saint John River system, with 49 of these in the Saint John River sensu stricto. The Acadian Redfish, Sebastes faciatus, a species assessed as threatened by the Committee on the Status of Endangered Wildlife in Canada, appears to be among these. While strictly marine fishes may contribute relatively little to the overall biomass of fishes in the Saint John River system, marine species account for 30.6% of the biodiversity of fishes in the river to date. This suggests that marine fishes may be a more significant component of the ichthyofauna of the lower Saint John River system than is generally recognized.

Residency and diel movement patterns of the endangered scalloped hammerhead Sphyrna lewini in the Revillagigedo National Park

2020 ◽  
Vol 96 (2) ◽  
pp. 543-548 ◽  
Author(s):  
Alejandro Aldana‐Moreno ◽  
E. Mauricio Hoyos‐Padilla ◽  
Rogelio González‐Armas ◽  
Felipe Galván‐Magaña ◽  
Alex Hearn ◽  
...  
Keyword(s):  
National Park ◽  
Movement Patterns ◽  
Sphyrna Lewini ◽  
Scalloped Hammerhead ◽  
Diel Movement

scholarly journals Long-Term GPS Tracking of Ocean Sunfish Mola mola Offers a New Direction in Fish Monitoring

PLoS ONE ◽  
2009 ◽  
Vol 4 (10) ◽  
pp. e7351 ◽  
Author(s):  
David W. Sims ◽  
Nuno Queiroz ◽  
Nicolas E. Humphries ◽  
Fernando P. Lima ◽  
Graeme C. Hays
Keyword(s):  
Gps Tracking ◽  
Ocean Sunfish ◽  
Mola Mola ◽  
Fish Monitoring

Sheltering patterns and utilization following the 2007 southern California wildfires

2009 ◽  
Vol 4 (2) ◽  
pp. 113-119 ◽  
Author(s):  
Thomas D. Kirsch, MD, MPH ◽  
J. Lee Jenkins, MD, MPH ◽  
Lauren M. Sauer, BA ◽  
Yu-Hsiang Hsieh, PhD ◽  
Emilie Calvello, MD, MPH ◽  
...  
Keyword(s):  
Risk Factors ◽  
Southern California ◽  
Movement Patterns ◽  
Red Cross ◽  
American Red Cross ◽  
Displaced Persons ◽  
Factors Associated ◽  
Johns Hopkins University

The 2007 southern California wildfires resulted in over 500,000 residents being displaced. A team from Johns Hopkins University and the American Red Cross surveyed 163 families at shelters and local assistance centers during the disaster. The responses were used to evaluate the needs and movement patterns of a displaced population.The data were also used to determine the risk factors associated with needing sheltering. There is a lower than expected reliance on public shelters, and displaced persons move frequently.

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