The bull shark (Carcharhinus leucas) and largetooth sash (Pristis perotteti) in Lake Bayano, a tropical man-made impoundment in Panama

  title={The bull shark (Carcharhinus leucas) and largetooth sash (Pristis perotteti) in Lake Bayano, a tropical man-made impoundment in Panama},
  author={R. Montoya and Thomas B. Thorson},
  journal={Environmental Biology of Fishes},
SynopsisThe Río Bayano in eastern Panama is one of many tropical rivers in which bull sharks (Carcharhinus leucas) and largetooth sawfish (Pristis perotteti) have been known to occur. Since both species can osmoregulate in fresh water throughout life, theoretically, both could survive in landlocked situations for many years.P. perotteti reproduces in fresh water, butC. leucas ordinarily does not, so only the former would appear to have the potential for establishing a breeding stock in such a… 

Distribution and habitat partitioning of immature bull sharks (Carcharhinus leucas) in a Southwest Florida estuary

The distribution and salinity preference of immature bull sharks were examined based on the results of longline surveys in three adjacent estuarine habitats in southwest Florida indicating the occurrence of size-based habitat partitioning.

Bioecology and movements of bull sharks, Carcharhinus leucas , caught in a long-term longline survey off northeastern Brazil

A robust understanding of habitat usage by coastal shark species, and how it overlaps with human presence in denselypopulated regions is needed to inform the development of efficient conservation

Habitat Ecology of the Bull Shark, Carcharhinus leucas, on Urban Coasts in Eastern Queensland, Australia

The habitat ecology of the euryhaline bull shark (Carcharhinus leucas) is poorly understood, yet vital for their conservation and management on our rapidly urbanising coastlines. This study

Biology, ecology and trophic interactions of elasmobranchs and other fishes in riverine waters of Northern Australia

Stomach content analysis and field observations confirmed an opportunistic, and often aggressive, feeding nature of the bull shark Carcharhinus leucas, and thus the species may pose some risk to bathers utilising inland waters far upstream (i.e. over 300 km).

Diet of the bull shark, Carcharhinus leucas, and the tiger shark, Galeocerdo cuvier, in the eastern Pacific Ocean

The high frequency of sea turtles in the stomachs of G. cuvier (>300 cm) suggests that this shark species is an important predator of turtles, which are commonly found along the southeastern Pacific coasts.

Status and the potential for extinction of the largetooth sawfish Pristis pristis in the Atlantic Ocean

Sawfishes currently are among the most threatened elasmobranchs in the world. Only two species inhabit Atlantic waters: the largetooth sawfish (Pristis pristis) and the smalltooth sawfish (Pristis

conservation of freshwater and euryhaline elasmobranchs: a review

  • R. A. Martin
  • Environmental Science
    Journal of the Marine Biological Association of the United Kingdom
  • 2005
published data on the diversity, life history, ecology, and status of freshwater and euryhaline elasmobranchs was reviewed in the context of anthropogenic threats and principles of conservation

Phylogeography and conservation of the bull shark (Carcharhinus leucas) inferred from mitochondrial and microsatellite DNA

The results indicate that effective bull shark management strategies will require local, regional, and international attention and cooperation, and are congruent with restricted maternal gene flow between populations caused by female site fidelity to nursery areas.

Movement and distribution of young bull sharks Carcharhinus leucas in a variable estuarine environment

Since bull sharks are euryhaline, results suggest that they may select environmental conditions via movement, possibly to reduce energetic costs associated with osmoregulation.

Natural or Artificial? Habitat-Use by the Bull Shark, Carcharhinus leucas

With increased destruction of natural habitats, artificial coastal habitat may become increasingly important to large juvenile bull sharks with associated risk of attack on humans, according to this first direct comparison of the use of natural versus artificial habitats for the bull shark.

Body Fluid Solutes of Juveniles and Adults of the Euryhaline Bull Shark Carcharhinus leucas from Freshwater and Saline Environments

Since the discovery of the phenomenally high urea content of the body fluids of cartilaginous fishes by Staedeler and Frerichs (1858), the unique osmoregulatory system of this vertebrate class has

Life history implications of a tagging study of the largetooth sawfish, Pristis perotteti, in the Lake Nicaragua-Río San Juan system

  • T. B. Thorson
  • Environmental Science
    Environmental Biology of Fishes
  • 2004
SynopsisOf a total of 377 Pristis perotteti tagged in the Lake Nicaragua-Río San Juan System, 214 (56.8% were recovered. Eighty were recovered at the original tagging site; four moved downstream the

Comparison of some parameters of serum and uterine fluid of pregnant, viviparous sharks (Carcharhinus leucas) and serum of their near-term young.

  • T. B. ThorsonJ. Gerst
  • Environmental Science
    Comparative biochemistry and physiology. A, Comparative physiology
  • 1972

Fishes of the Tropical Eastern Pacific

A comprehensive, color-illustrated guide to the marine fishes of the region extending from the central Gulf of California, southward to Ecuador. It covers 680 species, primarily species that inhabit

Age, Growth Rate and Longevity of Carcharhinus leucas Estimated from Tagging and Vertebral Rings

The available evidence suggests that they reach their larger size mainly through longer life--approximately 16 years for females of about 2.5 meters to about 12 years for males of maximum size.

Synopsis of the Fishes of Lake Nicaragua