Estimation of daily energetic requirements in young scalloped hammerhead sharks, Sphyrna lewini

@article{Duncan2006EstimationOD,
  title={Estimation of daily energetic requirements in young scalloped hammerhead sharks, Sphyrna lewini},
  author={K. M. Duncan},
  journal={Environmental Biology of Fishes},
  year={2006},
  volume={76},
  pages={139-149}
}
  • K. M. Duncan
  • Published 1 July 2006
  • Biology
  • Environmental Biology of Fishes
Juvenile scalloped hammerhead sharks, Sphyrna lewini, are apex predators within their nursery ground in Kāne‘ohe Bay, Ō‘ahu, Hawai‘i. Understanding daily maintenance requirements of a top-level predator is an important step toward understanding its ecological impact within a nursery ecosystem. Juvenile S. lewini were fed a range of daily ration levels to examine the effect of feeding rate on growth and gross conversion efficiency. The von Bertalanffy growth model yielded the best fit to the… Expand

Figures and Tables from this paper

Arsenic in Tissues and Prey Species of the Scalloped Hammerhead (Sphyrna lewini) from the SE Gulf of California
TLDR
Positive correlations were found between the levels of As in muscle and liver with the biological parameters of S. lewini and the probabilities of developing cancer, indicating biomagnification. Expand
Stingray life history trade-offs associated with nursery habitat use inferred from a bioenergetics model
TLDR
This study suggests the use of Kāne‘ohe Bay as a nursery habitat for juvenile brown stingrays is a trade-off between increased juvenile survival through predator avoidance and a late age at first maturity due to slow growth rates resulting from low prey availability. Expand
Relative importance of growth and behaviour to elasmobranch suction-feeding performance over early ontogeny
TLDR
Growth was the primary factor responsible for developmental trends in both leopard sharks Triakis semifasciata and whitespotted bamboosharks, with size-independent behavioural changes contributing little to overall performance variability. Expand
CARACTERIZACIÓN DE LA PESCA DEL TIBURÓN MARTILLO, SPHYRNA LEWINI, EN LA PARTE EXTERNA DEL GOLFO DE NICOYA, COSTA RICA
TLDR
Penon is identified as a primary nursery for scalloped hammerhead sharks, and management actions that seek to reduce fishing effort between March and May, when pups are born are recommended. Expand
Maternal provisioning gives young-of-the-year Hammerheads a head start in early life
TLDR
Young-of-the-year cryptic Scalloped Hammerheads and Carolina Hammerheads were sampled from nurseries along the US Atlantic Coast and compared for a number of biological condition metrics across three developmental stages, indicating that nursery quality, with respect to prey availability, may be important for YOY hammerhead survivorship. Expand
The response of gastric pH and motility to fasting and feeding in free swimming blacktip reef sharks, Carcharhinus melanopterus
TLDR
It is hypothesize that behavioral strategies adopted by sharks in the field may be an attempt to optimize digestion by selecting for appropriate environmental conditions. Expand
Ecological effects of longline fishing and climate change on the pelagic ecosystem off eastern Australia
TLDR
There may be ecological redundancy among high trophic level predators since they share a diverse suite of prey and collectively only represent <1% of the total system biomass, and micronekton fishes and cephalopods have high biomasses and high production and consumption rates and are important as both prey and predators. Expand
6.08 – High-Trophic-Level Consumers: Elasmobranchs
TLDR
In this chapter, the trophic interactions of coastal elasmobranchs as prey, predators, and competitors are reviewed and factors that affect these relationships and elasmsobranch interactions within key coastal habitats are explored. Expand
Effects of climate-change driven gradual and acute temperature changes on shark and ray species.
TLDR
The smaller and sedentary Triaenodon obesus exhibited the weakest response of all species to both SST and the ENSO, reflecting its lower metabolic rates and mobility, which compel further work on the diversity of elasmobranch responses to environmental change. Expand
The Presence of Great White Sharks: Associations with Environmental Factors
..............................................................................................2 Introduction. ........................................................................................2Expand
...
1
2
...

References

SHOWING 1-10 OF 53 REFERENCES
Food limitation in a nursery area: estimates of daily ration in juvenile scalloped hammerheads, Sphyrna lewini (Griffith and Smith, 1834) in Kāne'ohe Bay, Ō'ahu, Hawai'i
TLDR
Data available for diet and growth of juvenile scalloped hammerhead sharks in Kāne'ohe Bay as well as data for their prey species suggest that these sharks may be surviving much of the time at consumption levels below maintenance ration. Expand
Habitat use, growth rates and dispersal patterns of juvenile scalloped hammerhead sharks Sphyrna lewini in a nursery habitat
TLDR
Findings confirmed recent hypotheses that Kane'ohe Bay may be more important in providing protection from predators than in providing a plentiful source of food for juvenile S. lewini. Expand
Effect of ration size on growth and gross conversion efficiency of young lemon sharks, Negaprion brevirostris
TLDR
K1 values generated from both laboratory and field data suggest that young lemon sharks can convert food to new tissue as efficiently as teleosts. Expand
Diet and Diel Feeding Periodicity of Juvenile Scalloped Hammerhead Sharks, Sphyrna lewini, in Kāne'ohe Bay, Ō'ahu, Hawai'i
  • A. Bush
  • Biology
  • Environmental Biology of Fishes
  • 2004
TLDR
Analysis of stage of digestion data and the frequency of occurrence of empty stomachs indicated that sharks fed more at night than during the day, and season and year had significant effects on the amount of food in sharks' stomachs, but sex and proximity to the patch reef did not. Expand
Metabolic rates of juvenile scalloped hammerhead sharks (Sphyrna lewini)
TLDR
Tailbeat frequency and swimming speed can be used as predictors of metabolic rate of free-swimming juvenile hammerhead sharks, indicating that they are most energy efficient at swimming speeds between 0.75 and 0.9 L s–1. Expand
Bioenergetics of free-ranging juvenile scalloped hammerhead sharks (Sphyrna lewini) in Kāne'ohe Bay, Ō'ahu, HI
TLDR
The high MR measured for sharks in Kane'ohe Bay indicate that these sharks require a high daily ration, and suggests that sharks that are successful in surviving through the winter may actually grow faster in the colder months due to the colder temperatures. Expand
The Ecology of the Scalloped Hammerhead Shark, Sphyrna lewini, in Hawaiil
TLDR
Kaneohe Bay, Oahu, is a pupping ground for the scalloped hammerhead shark, Sphyrna lewini, the pups being most abundant between April and October, and Squid beaks in their stomachs indicate that the adults are pelagic the rest of the year. Expand
Diet, prey selection and their energetic relationship to reproduction in the tropical herring Herklotsichthys
ABSTKACT: Herklotsichthys quadrimaculatus (gold-spot herring) is a short-lived tropical herring (maximum age l yr) that matures at 5 mo and spawns continuously thereafter. It forms an importantExpand
Metabolism and swimming efficiency of the bonnethead sharkSphyrna tiburo
TLDR
Although the bonnethead shark is a continuously active species, its routine metabolic rate and the efficiency of its locomotory system may be similar to that of “typical” bony fishes. Expand
Diet, Feeding Habits and Estimates of Daily Ration of Young Lemon Sharks, Negaprion brevirostris (Poey)
TLDR
The diet of a tropical elasmobranch, the lemon shark, Negaprion brevirostris, was investigated through analyses of stomach contents collected during two sampling periods, finding no pattern in diel feeding activity or differences in the amount of food consumed by males or females. Expand
...
1
2
3
4
5
...