Abstract
Several methods to indirectly estimate metabolism of aquatic animals have been reported, including heart rate, electromyograms, video recording, and averaging velocity of an animal moving between two or more points. The present study carried out in the lagoon at Bimini Islands, Bahamas, used acoustic, speed-sensing transmitters to indirectly estimate energy consumption of 1.5-2 m subadult lemon sharks (Negaprion brevirostris). Speed records from three sharks tracked a total of 170 h, yielded average swimming speeds of 0.44-0.71 m s-1. These speeds were converted into energy consumption to obtain metabolism. By combining the estimates of metabolism with calculated values on assimilation and production, we are able to present a balanced bioenergetics model for the subadult lemon shark: 100C = 7P + 66M + 26E, where C = consumption, P = production, M = metabolism, and E = excretion. When comparing juvenile lemon sharks to subadults, an ontogenetic shift is seen: 0 to 2 yr olds allocate 22% of consumed energy to production and 50% to metabolism while 6 to 9 yr olds show values of 7% and 66%, respectively. We believe this to be the first field-based, balanced equation presented for any large elasmobranch.
| Original language | English |
|---|---|
| Pages (from-to) | 241-247 |
| Number of pages | 7 |
| Journal | Hydrobiologia |
| Volume | 371-372 |
| State | Published - Jan 1 1998 |
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Keywords
- Bioenergetics
- Lemon shark
- Negaprion brevirostris
- Swimming speed
- Telemetry
- Transmitter
ASJC Scopus subject areas
- Aquatic Science
Cite this
Using speed-sensing transmitters to construct a bioenergetics model for subadult lemon sharks, Negaprion brevirostris (Poey), in the field. / Sundström, L. Fredrik; Gruber, Samuel H.
In: Hydrobiologia, Vol. 371-372, 01.01.1998, p. 241-247.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Using speed-sensing transmitters to construct a bioenergetics model for subadult lemon sharks, Negaprion brevirostris (Poey), in the field
AU - Sundström, L. Fredrik
AU - Gruber, Samuel H.
PY - 1998/1/1
Y1 - 1998/1/1
N2 - Several methods to indirectly estimate metabolism of aquatic animals have been reported, including heart rate, electromyograms, video recording, and averaging velocity of an animal moving between two or more points. The present study carried out in the lagoon at Bimini Islands, Bahamas, used acoustic, speed-sensing transmitters to indirectly estimate energy consumption of 1.5-2 m subadult lemon sharks (Negaprion brevirostris). Speed records from three sharks tracked a total of 170 h, yielded average swimming speeds of 0.44-0.71 m s-1. These speeds were converted into energy consumption to obtain metabolism. By combining the estimates of metabolism with calculated values on assimilation and production, we are able to present a balanced bioenergetics model for the subadult lemon shark: 100C = 7P + 66M + 26E, where C = consumption, P = production, M = metabolism, and E = excretion. When comparing juvenile lemon sharks to subadults, an ontogenetic shift is seen: 0 to 2 yr olds allocate 22% of consumed energy to production and 50% to metabolism while 6 to 9 yr olds show values of 7% and 66%, respectively. We believe this to be the first field-based, balanced equation presented for any large elasmobranch.
AB - Several methods to indirectly estimate metabolism of aquatic animals have been reported, including heart rate, electromyograms, video recording, and averaging velocity of an animal moving between two or more points. The present study carried out in the lagoon at Bimini Islands, Bahamas, used acoustic, speed-sensing transmitters to indirectly estimate energy consumption of 1.5-2 m subadult lemon sharks (Negaprion brevirostris). Speed records from three sharks tracked a total of 170 h, yielded average swimming speeds of 0.44-0.71 m s-1. These speeds were converted into energy consumption to obtain metabolism. By combining the estimates of metabolism with calculated values on assimilation and production, we are able to present a balanced bioenergetics model for the subadult lemon shark: 100C = 7P + 66M + 26E, where C = consumption, P = production, M = metabolism, and E = excretion. When comparing juvenile lemon sharks to subadults, an ontogenetic shift is seen: 0 to 2 yr olds allocate 22% of consumed energy to production and 50% to metabolism while 6 to 9 yr olds show values of 7% and 66%, respectively. We believe this to be the first field-based, balanced equation presented for any large elasmobranch.
KW - Bioenergetics
KW - Lemon shark
KW - Negaprion brevirostris
KW - Swimming speed
KW - Telemetry
KW - Transmitter
UR - http://www.scopus.com/inward/record.url?scp=7844250135&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=7844250135&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:7844250135
VL - 371-372
SP - 241
EP - 247
JO - Hydrobiologia
JF - Hydrobiologia
SN - 0018-8158
ER -