|Copyright: Josee Laneuville (Lagrifajo)
|Date Taken: 2005-02-04|
|Photo Version: Original Version|
|Date Submitted: 2005-03-15 21:47|
|[Note Guidelines] Photographer's Note [French]|
|Here the inderside of the barndoor skate The photo one was taken through window, of course. The barndoor skate had fun to appear in this way by the window.|
Class: Chondrichthyes (cartilaginous fish)
Scientific name: Raja laevis
French name: Grande raie
Weight: 14 to 17 kg
Status: Common species
Distinguishing features: This skate has a flattened body, a pointed snout and fairly smooth skin. There are several mucous pores marked with black spots on its ventral surface, and several rows of spines on its tail.
Reproduction: Spawning occurs in winter. Fertilization is internal. The eggs of the barndoor skate are encased in yellowish capsules that are 12.7 cm long and 7 cm wide.
Diet: These fish eat invertebrates, including bivalve molluscs, crabs, lobster, shrimp and worms. They also eat various types of fish, including spiny dogfish, gaspereau, herring, sea lances and flatfishes.
Predators: Their main enemies are large sharks.
Habitat: Barndoor skates live in salt water on various types of bottoms. They tolerate a wide range of temperatures, from 1.2 to 20°C. They are found in shallow water, along the continental shelf, down to 750 metres.
behaviour: These voracious predators have few enemies. At rest, barndoor skates are camouflaged against the bottom. They use their sensitive snouts to forage in the sand or mud. The spiracle, a small hole located behind each eye, is used to take in water and avoid blocking the gills.
Source : http://www2.ville.montreal.qc.ca/biodome/ebdm2.htm
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LordPotty, Janice, guychou, Luc has marked this note useful
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Interesting post Josee. I presume we're looking at the underside of the skate? Its a most unusual creature.
Your notes are very comprehensive. well done.
- [2005-03-16 3:48]
Very clear and sharp Skate Josee. Excellent shot - a view we don't often see. You must have had fun diving. Well done.
Belle prise! Félicitation. La netteté est surprenante.