Review of Elasmobranch Behavioral Studies Using Ultrasonic Telemetry with Special Reference to the Lemon Shark, Negaprion Brevirostris, Around Bimini Islands, Bahamas

Sundström, L. Fredrik; Gruber, Samuel H.; Clermont, Susi M.; Correia, José Manuel; Marignac, Jean R. C. de; Morrissey, John F.; Lowrance, Courtney R.; Thomassen, Lori; Oliveira, Miguel Tiago

doi:10.1023/a:1007657505099

Cited by 103 publications

(20 citation statements)

References 54 publications

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“…Based on telemetry studies, lemon sharks appear to increase their activity during crepuscular and/or nocturnal hours (Gruber 1984, Sundström et al 2001. Our catch data results showed that juvenile lemon sharks of both sexes in the Sebastopol Lagoon were more active during the period between 19:00 and 22:00 h. However, nighttime activity seems to change according to the size of sharks, suggesting a reduction of overlap in the time activity among juveniles of distinct size/age groups.…”

Section: Discussionmentioning

confidence: 68%

“…Springer (1967) noted that shark nurseries correspond to coastal zones not usually inhabited by adults, except females laying eggs or giving birth to young. Most coastal shark species have a geographically discrete nursery located in highly productive shallow waters, such as coastal marshes, reef lagoons and estuaries, where the young can find abundant food and shelter from predation (Branstetter 1990, Castro 1993.…”

Section: Introductionmentioning

confidence: 99%

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Nursery area and size structure of the lemon shark population, Negaprion brevirostris (Poey, 1868), in Los Roques Archipelago National Park, Venezuela

Tavares

Rodrı́guez

Morales³

2016

Univ. Sci.

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The protection of the habitats used by juvenile sharks is a management strategy that has recently caught the attention of fishery biologists. In the present study, we evaluated the population of the lemon shark (Negaprion brevirostris) from Los Roques Archipelago in order to identify the nursery area, describe the size composition, and examine the variation in nocturnal activity of the juvenile individuals. The data analysed came from three different sources: commercial shark fishery, tagrecapture sampling, and visual records. A total of 375 lemon sharks with total lengths between 55 and 281 cm were recorded during the study period. Overall data showed that the area occupied by juvenile lemon sharks was clearly partitioned into primary and secondary nurseries. Additionally, nighttime activity seemed to change according to the size of sharks in the primary nursery, suggesting a reduction of time activity overlapping among juveniles of distinct size/age. Results suggest that the strategy of utilization of the primary nurseries by the lemon shark may lead to important ecological benefits by reducing the competition, predation and natural mortality.

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Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Nursery area and size structure of the lemon shark population, Negaprion brevirostris (Poey, 1868), in Los Roques Archipelago National Park, Venezuela

Tavares

Rodrı́guez

Morales³

2016

Univ. Sci.

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“…As such, constant (whale shark, Rhincodon typus, (Gunn et al 1999), nocturnal (blue shark, Prionace glauca, Sciarrotta and Nelson 1977), diurnal (tiger shark, Galeocerdo cuvier, Tricas et al 1981) and crepuscular (lemon shark, Negaprion brevirostris, Gruber et al 1988) patterns have been reported in shark species, although intraspecific variation exists (Sundström et al 2001). Within this study, both sharks (GWS-1 and GWS-2) displayed crepuscular patterns of activity, with ROM greatest during dawn and dusk.…”

Section: Discussionmentioning

confidence: 99%

“…Active and passive ultrasonic telemetry has been successfully used to describe fine scale movement patterns in various species of sharks (Gruber et al 1988;Sundström et al 2001, Voegeli et al 2001Rechisky and Wetherbee 2003). Rate of movement (ROM: the distance travelled by an animal over a certain time period, also known as point-to-point swimming speed or speed over the ground), instantaneous swimming speed (ISS: speed of the animal through the water), swimming linearity and swimming orientation have frequently been used as indices to both quantify and qualify how a species interacts with its surrounding environment (Sundström et al 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Rate of movement (ROM: the distance travelled by an animal over a certain time period, also known as point-to-point swimming speed or speed over the ground), instantaneous swimming speed (ISS: speed of the animal through the water), swimming linearity and swimming orientation have frequently been used as indices to both quantify and qualify how a species interacts with its surrounding environment (Sundström et al 2001). Carey et al (1982) completed the first and only multiple day active track of a white shark, following an individual for 83 h over a distance of 190 km.…”

Section: Introductionmentioning

confidence: 99%

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Coastal swimming patterns of white sharks (Carcharodon carcharias) at Mossel Bay, South Africa

et al. 2009

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Between June and December 2005, active and passive acoustic telemetry was used to examine fine scale movements of 13 white sharks (Carcharodon carcharias) (ten passive, three active) at Mossel Bay. A total of 24 active trackings (ranging from 2 h to 103 h in duration) were conducted. Patterns of rate of movement (ROM), swimming linearity (LI), swimming bearing, and instantaneous swimming speed (ISS) were assessed. A conversion quotient (Q) of 1.21 between ISS and ROM (10 min sample interval) was calculated suggesting ROM is a good indicator of white shark activity. The mean ROM for tracked sharks was 0.52 m·s −1 , with a greatest sustained ROM of 1.33 m·s −1 (4.8 km·h −1 ).Sharks displayed greatest LI and ROM during directional travels between the three persistent aggregation sites. The majority of the shark movement was, however, non-linear as the sharks repeat patrolled at the three aggregation sites. Two of these sites were not associated with pinniped presence, and sharks typically patrolled back and forth parallel to the shore line at a comparatively low ROM which suggested resting. The third aggregation site was adjacent to Seal Island, and despite low LI, sharks displayed a high ROM, indicating high activity levels. We propose that the high ROM is related to maximising search area when patrolling to hunt Cape fur seals (Arctocephalus p. pusillus).

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The conservation implications of spatial and temporal variability in the diurnal use of Bahamian tidal mangrove creeks by transient predatory fishes

Harborne

Talwar

Brooks

2015

Aquatic Conservation

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1. Mangrove creeks have a range of functional roles in tropical seascapes, but their use as feeding and refuge areas for commercially and ecologically important transient predators is poorly understood.2. This study used video cameras to investigate the diurnal use of three Bahamian mangrove creeks by transient predators during a 2-month period. More than 500 fishes from 10 species were recorded, including elasmobranchs, reef-associated fishes, and nearshore specialists. A multivariate analysis indicated that movement of the transient predator assemblage was not significantly linked to any abiotic variable and did not vary among creeks.3. Generalized linear mixed-effects models of the four most abundant transient predators demonstrated species-specific variations in creek use. Sightings of Caranx ruber and Negaprion brevirostris varied significantly among the three creeks. Furthermore, C. ruber was seen most frequently close to high tide, while N. brevirostris was seen more frequently with increasing time since sunrise and during higher tidal ranges. Sphyraena barracuda and Tylosurus crocodilus were seen most frequently just after low tide. All three creeks appear to be functionally important for transient predators, but these species exhibit considerable spatio-temporal variability in how they use this habitat.4. Mangrove creeks are threatened by a range of anthropogenic stressors, and are frequently a target of conservation initiatives. The species-specific spatial variability in creek use demonstrates that simply including representative creeks in marine protected areas could exclude functionally important areas. Furthermore, development that alters tidal cycles in creeks is likely to have significant impacts on transient predators, and underscores the need for restoration and conservation of hydrological flow.

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Review of Elasmobranch Behavioral Studies Using Ultrasonic Telemetry with Special Reference to the Lemon Shark, Negaprion Brevirostris, Around Bimini Islands, Bahamas

Cited by 103 publications

References 54 publications

Nursery area and size structure of the lemon shark population, Negaprion brevirostris (Poey, 1868), in Los Roques Archipelago National Park, Venezuela

Nursery area and size structure of the lemon shark population, Negaprion brevirostris (Poey, 1868), in Los Roques Archipelago National Park, Venezuela

Coastal swimming patterns of white sharks (Carcharodon carcharias) at Mossel Bay, South Africa

The conservation implications of spatial and temporal variability in the diurnal use of Bahamian tidal mangrove creeks by transient predatory fishes

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