Greater weever: Difference between revisions
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==[[Biology]]== |
==[[Biology]]== |
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Found on muddy, sandy or gravelly bottoms, from a few meters to about 150 m, likewise the [[Lesser weever]], lies the [[ |
Found on muddy, sandy or gravelly bottoms, from a few meters to about 150 m, likewise the [[Lesser weever]], lies the [[greater weever]]. It constantly rests on the bottom, with eyes closed often, and the tip of the first dorsal fin exposed. At night, they swim around wanderously, even pelagically. Feeding on small [[invertabrates]] and fishes, and being nocturnal are their casual activies.[http://www.fishbase.org/Summary/SpeciesSummary.php?id=1363] Along the scales are dark markings. The anterior dorsal fin and contains various venomous spines. To be utilized it can be fresh or frozen, can be fried, broiled, boiled and baked. Spawning begins place in June and August, pelagic eggs are 1 mm. |
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==References== |
==References== |
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Revision as of 14:13, 14 November 2006
| Greater weever | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
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| Genus: | |
| Species: | T. draco
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| Binomial name | |
| Trachinus draco | |
The greater weever, Trachinus draco, which is hazardous, is under the Trachinidae family, has a order of Perciformes and last is Actinopterygii. A male unsexed fish's average size is 53 cm TL. It weighs about 1, 860g.[1] For the UK Record Weights from rod/line Shore it stands as 1lb-07oz-15dr. And last but not least on boat 2lb-00oz-13dr.
The color of its body is a greenish yellow or lime, to dark green and brown, on the head and back, with pale sides, and with yellowish to blueish brown oblaque lines.
Description
The Greater weever's body is elongate, a tapered figure, laterally compressed, with a large head, and length up to six times more height. The upper rim of the eye has two to three small open pines. They are in ront of each eye.
Dorsal fin and other body parts
It's pectoral fin is rounded with a notch. On the first dorsal fin, both of the spines, and that of the grill covers, have venom glands attached to them. The spines are grooved, and when pressed, toxin is driven up the grooves and given.[2] Care would be needed due to the poison causing localized discomfort and swelling, which can occasionally cause deaths. The wound would be allowed to bleed freely, to help reduce toxin, and then maybe treated with potassium permanegate solution, or very hot water. You'd might acquire medical help. It is less common than a Lesser weever.
The mouth is huge and is set oblaquely. The eyes are placed toward the top of the head. In the front, the dorsal fin is blackish.The next dorsal and anal fins have a yellow stripe running its length.
Importance and resilience
The GWF is minor commercial, and is a gamefish. It can be found in acquarium, mainly those that are public. This weever has medium resilience. The minimum poluplation (that is doubling) time 1.4 - 4.4 years (Assuming tm=2-4). It can be distributed in the Eastern Atlantic Norway to Morocco, Madeira and Canary Islands, including the Mediterranean and the Black Sea.[3]
Nature and lifestyle
This fish thrives in a demersal environment with the depth range 1 – 150 m. Climate is temperate and geographically it is, 66°N - 27°N, 19°W - 42°E. The Greater Weever breeds from June to August. The Weever craves on crustaceans which consist of shrimps and crabs, as well as smaller fish. It's habitat can be described as sandy waters at maximum 100m. It is found in all waters of the United Kingdom.
Found on muddy, sandy or gravelly bottoms, from a few meters to about 150 m, likewise the Lesser weever, lies the greater weever. It constantly rests on the bottom, with eyes closed often, and the tip of the first dorsal fin exposed. At night, they swim around wanderously, even pelagically. Feeding on small invertabrates and fishes, and being nocturnal are their casual activies.[4] Along the scales are dark markings. The anterior dorsal fin and contains various venomous spines. To be utilized it can be fresh or frozen, can be fried, broiled, boiled and baked. Spawning begins place in June and August, pelagic eggs are 1 mm.
References
- "Greater Weever". Retrieved 2006-09-22.
{{cite web}}:|first=missing|last=(help) - Auerbach, Campbell, P.S., Dr. "Greater Weever Species Summary". Retrieved 2006-09-22.
{{cite web}}: CS1 maint: multiple names: authors list (link)