Gafftopsail Сом
| Gafftopsail Сом | |
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Научная классификация 
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| Домен: | Эукариота |
| Королевство: | Животное |
| Филум: | Chordata |
| Сорт: | Actinopterygii |
| Заказ: | Siluriformes |
| Family: | Ariidae |
| Genus: | Bagre |
| Species: | B. marinus
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| Binomial name | |
| Bagre marinus (Mitchill, 1815)
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| Synonyms[2] | |
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Сома гаффтопсайла ( Bagre Marinus ) - это вид морского сома, найденного в водах западного центрального атлантического океана , а также Мексиканского залива и Карибского моря . У этого есть длинные ядовитые шипы, которые могут вызвать болезненные раны. Это питается ракообразными и другой рыбой. Самец этого вида оплодотворяет яйца самки и размышляет их во рту, пока они не вылупляются. Оболочный веток питается по всей толще воды. Эта рыба является обычным уловами в юго -востоке США, хотя ее можно найти на севере, как в Нью -Йорке . Их считают сильными бойцами рыболовами. Они взяты из пирсов, причалов, рифов и прибоя, а также на рыбалке или рыбалке в нижней части рыбалки . Они пойманы с твердыми приманками, а также с мягкими пластиками, вырезаны приманки и живут или мертвые креветки. Некоторые рыбаки используют ловушки для сома, метод, регулируемый некоторыми состояниями.
Распределение
[ редактировать ]Сом с Gafftopsail живут в Атлантике, Карибском бассейне и Мексиканском заливе от Кейп -Код до Бразилии. [ 1 ] Они также встречаются в солоноватых водах, в том числе устья , лагуны, солоноватые моря и мангро . Оболочные ласточки, как правило, распространены в изобилии в своем диапазоне. [1]
Characteristics
[edit]The gafftopsail catfish is blue-grey to dark brown with a light grey belly. Its appearance is typical for a catfish except for the deeply forked tail and the venomous, serrated spines. It also has a little hump that looks somewhat like a wave. The typical length of a mature gafftopsail catfish is about 17 in (43 cm). The anal fin is a few inches anterior to the tail and is white or pale blue, with 22–28 rays on it and a high, anterior lobe.[3] The pelvic fin is 6–12 in (15–30 cm) anterior to the tail fin. The gafftopsail catfish has maxillary barbels and one pair of barbels on the chin. It resembles the hardhead catfish, but its dorsal spine has a distinctive fleshy extension (like the fore-and-aft topsail of a ship).
The primary food of juveniles is unidentifiable organic matter; the secondary food is fish, with smaller amounts from other trophic groups. Unlike many other catfish, which are primarily bottom feeders, the gafftopsail catfish feeds throughout the water column. It eats mostly crustaceans, including crabs, shrimp, and prawns (95% of the diet), but it will also eat worms, other invertebrates, and bony fishes (about 5% of the diet).[4] In addition to humans, predators of the gafftopsail catfish include the tiger shark and bull shark.
Gafftopsail catfish spawn over inshore mudflats during a relatively short time span (10 days) from May to August;[5] they are mouthbreeders. The eggs are about 1 in (2.5 cm) in diameter. Males keep up to 55 eggs in their mouths until they hatch. Young are about 5 cm (2 inches) long when they hatch, and the male may continue to brood them until they are up to 4 in (10 cm) long. The males do not feed while they are carrying the eggs or young.[6]
Fishing
[edit]The gafftopsail catfish is a common catch in the Southeastern United States, although it is also caught as far north as New York. They are taken from piers, jetties, reefs, and the surf, as well as bottom fishing or flats fishing. They are caught with cut bait and shrimp, or lures such as plugs, spoons and spinners, as well as soft plastic lures resembling shrimp, worms, and shad. They are attracted to the sound of struggling fish, like a popping cork creates. Catfish trapping is also used to capture them, but is regulated in some states. Catfish traps include "slat traps," long wooden traps with an angled entrance, and wire hoop traps. Typical bait for these traps includes rotten cheese and dog food.
Gafftopsail catfish are good eating; the red lateral line should be removed to prevent "muddy taste"; however in gafftopsails taken from southern Florida mangrove estuaries, this is seemingly unnecessary. The pectoral fins and dorsal fin contain venomous spines; care should be used when handling this fish.
Weight and length
[edit]
The largest recorded weight for a gafftopsail catfish is 4.54 kg (10.0 lb)[7] and 69 cm (27 in) in length.[8] A more common weight and length of gafftopsails caught is 1–2 lb (450–910 g) and 12–16 in (30–41 cm).
As gafftopsail catfish grow longer, they increase in weight, but the relationship is not linear. The relationship between total length (L, in inches) and total weight (W, in pounds) for nearly all species of fish can be expressed by an equation of the form:
Invariably, b is close to 3.0 for all species, and the constant c varies between species.[9] Data from the Florida Fish and Wildlife Conservation Commission indicate, for the gafftopsail catfish, c = 0.000493 and b = 3.075[10] The relationship described in this section suggests a 12-inch gafftopsail catfish will weigh about one pound, while a 20-inch fish will likely weigh about five pounds.
References
[edit]- ^ Jump up to: a b c Chao, L.; Vega-Cendejas, M.; Tolan, J.; Jelks, H.; Espinosa-Perez, H. (2015). "Bagre marinus". IUCN Red List of Threatened Species. 2015: e.T196806A2476570. doi:10.2305/IUCN.UK.2015-2.RLTS.T196806A2476570.en. Retrieved 19 November 2021.
- ^ "Synonyms of Bagre marinus (Mitchill, 1815)". Fishbase.org. Retrieved 29 July 2017.
- ^ Smith, C. Lavett. National Audubon Society Field Guide to Tropical Marine Fishes of the Caribbean, the Gulf of Mexico, Florida, the Bahamas, and Bermuda. Chanticleer Press, 1997, ISBN 0-679-44601-X, pp. 85 & 346
- ^ FishBase.org: Food and Feeding Habits Summary - Bagre Marinus see online accessed 11 March 2010
- ^ Muncy R.J., Wingo W.M., Species Profiles: Life Histories and Environmental Requirements of Coastal Fishes and Invertebrates (Gulf of Mexico): Sea Catfish and Gafftopsail Catfish read online p. 4
- ^ Smith, pp. 85 & 346
- ^ IGFA 2007 Database of IGFA angling records. IGFA, Ft. Lauderdale, FL, USA http://www.igfa.org/Records/Fish-Records.aspx?Fish=Catfish, gafftopsail&LC=ATR
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Bagre marinus". FishBase. February 2017 version.
- ^ R. O. Anderson and R. M. Neumann, Length, Weight, and Associated Structural Indices, in Fisheries Techniques, second edition, B.E. Murphy and D.W. Willis, eds., American Fisheries Society, 1996.
- ^ данных для кома мужского и женского пола сома с Флориды помощью . Среднее значение
Внешние ссылки
[ редактировать ]- Gafftopsail Сом
- Техасская страница парков и дикой природы для сома гаффтопс.
- Отчет о сохранении рыб и дикой природы Флориды 2008
- Смитсоновская морская станция в Форт -Пирсе включает биологическую информацию и информацию о сборе урожая
| Базы данных управления авторитетом : национальный |
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