Skates/Rays

Displaying 11 - 17 of 17

Species: 

Pristis pectinata

Bycatch is the most serious issue threatening the smalltooth sawfish today (Seitz & Poulakis 2006; NMFS 2009). The historical range of the species stretched along the coast from New York to Texas, but is now restricted to the coastal waters of Florida (Seitz & Poulakis 2006). Smalltooth sawfish populations have declined so drastically that an estimate by the National Marine Fisheries Service put the current number of animals at less than 5% of the individuals present during European colonization (NMFS 2009).

Distribution: 

Atlantic coastal waters of Florida

Population: 

Decreasing
Photo: David Iliff, taken under CC-BY-SA 3.0

IUCN Status: 

Critically Endangered

Type: 

Fish

Bycatch Threat: 

Pots and traps, trawls, gillnets, seines, trammel nets

Study Type: 

Field study in the wild

Location: 

Brazil

Target catch: 

tuna (pelagic) and sharks (bottom)

Effect on bycatch species: 

CPUE was significantly higher for night, blue, silky, and oceanic whitetip sharks on circle hooks.

Effect on target catch: 

None reported for pelagic longlines. On bottom longlines, CPUE was higher for blacknose and nurse sharks and southern stingrays; no CPUE difference between hook type; more tiger and blacknose sharks were alive at haulback with circle hooks

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Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Northern Australia

Target catch: 

Prawns

Effect on bycatch species: 

Reduced ray catches by 17.7%

Effect on target catch: 

Reduced the proportion of soft and damaged prawns by 41.6% and reduced catches of tiger prawns by 6.5%

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Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Hawaii

Target catch: 

Tuna and swordfish

Effect on bycatch species: 

No differences in catches between experimental and control sets

Effect on target catch: 

Decreased catch of wahoo, dolphinfish, blue and striped marlin, and shortbill species, increased catch of sickle pomfret and opah, and did not affect catch of sharks and pelagic sting rays

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Bycatch species: 

Reduction technique: 

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