nomes no trilho de navegação
Prionotus evolans és una espècie de peix pertanyent a la família dels tríglids.
Menja sobretot crustacis i peixos.[5]
És un peix marí, associat als esculls de corall i de clima temperat que viu fins als 180 m de fondària.[5]
Es troba a l'Atlàntic occidental: des de Nova Escòcia (el Canadà) fins al nord de Florida (els Estats Units).[5][9][10][11][12][13][14]
És inofensiu per als humans i emprat per a elaborar farina de peix, fertilitzants, aliments per a animals (incloent-hi humans) i com a esquer.[5]
Prionotus evolans, the striped searobin, is a species of marine ray-finned fish belonging to the family Triglidae, the sea robins. This fish is found in the western Atlantic Ocean.
Prionotus evolans was first formally described in 1766 by the Swedish scientist Carl Linnaeus as Trigla evolans with the type locality given as South Carolina and Jamaica.[3] When Bernard Germain de Lacépède described the then monotypic genus Prionotus, its only species was Linnaeus's T. evolans which he also designated as the type species of the genus.[4] The specific name evolans means "flying away", an allusion to the long pectoral fins which resemble wings.[5]
Prionotus evolans has a large and deep head with no cirrhi at the nostrils or over the eyes, the nostrils also lack any spines near them,. The mouth is large, extending as far as the anterior margin of the eye and is slightly inferior with the lower jaw not protruding. The spine on the preoperculum does not extend beyond the operculum. There are two separate dorsal fins, the first has 10 spines and the second has 12 soft rays. The anal fin contains 10 soft rays. The pectoral fin has a rounded posterior margin and has 13-14 rays within its membrane and the fin extends almost as far as the rear of the base of the anal fin. There are 3 enlarged rays at the bottom of fin which are free of the fin membrane. The body is covered in scales.[6] The maximum published total length of the striped searobin is 45 cm (18 in), alth ough 30 cm (12 in) is more typical, and the maximum published weight is 1.6 kg (3.5 lb).[2] The overall color is reddish to olive brown with a thin dark stripe along the lateral line, another one runs parallel to that on the lower body. The whole of the pectoral fin is marked with closely-set, sinuous dark vertical lines with the inner part of the fin forming a dark patch. There is a dark blotch on the first dorsal fin between the fourth and fifth spines.[6]
Prionotus evolans is found in the Western Atlantic Ocean where it is found from Nova Scotia in the north south along the Atlantic coast of the United States to southeastern Florida, it is also found around Bermuda, striped searobins are rare north of Cape Cod, Massachusetts.[1] It is found at depths between 9 and 180 m (30 and 591 ft), typically 20 to 70 m (66 to 230 ft),[2] inhabiting sandy substrates from estuaries to offshore depths, infrequently being found associated with reefs.[1]
Prionotus evolans uses the free pectoral fin rays to manipulate objects and detect prey using chemoreception , The bony, square head of searobins can be used to excavate small prey items from the substrate and their rather catholic diet includes crustaceans, cephalopods, gastropods, bivalves, amphipods, eggs, other fish and seaweed, juveniles eat more copepods.[7]
The striped searobin has minor commercial uses and is a game fish. It is also occasionally used as bait.[2]
"The Inland Fishes of New York State." C. Lavett Smith.
Prionotus evolans, the striped searobin, is a species of marine ray-finned fish belonging to the family Triglidae, the sea robins. This fish is found in the western Atlantic Ocean.
Prionotus evolans Prionotus generoko animalia da. Arrainen barruko Triglidae familian sailkatzen da.
Prionotus evolans is een straalvinnige vissensoort uit de familie van ponen (Triglidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1766 door Linnaeus.
Bronnen, noten en/of referenties
Prionotus evolans är en bottenfisk i familjen knotfiskar (Triglidae) som finns i västra Atlanten.
Arten är mycket lik den nära släktingen Prionotus carolinus och har som alla knotfiskar en avlång kropp med stort, benklätt huvud. Detta är emellertid plattare än hos P. carolinus, munnen är bredare, sidorna är rödaktiga till olivbruna, stjärtfenan tvärt avhuggen[2] och bröstfenorna brunaktiga med tunna, vågiga tvärlinjer i annan nyans och svart, undre del. Under den mörka sidolinjen har den en andra, mörk strimma som löper parallellt med denna.[3] Längden kan som mest nå upp till 40 cm, och vikten till 1,55 kg.[4]
Arten är en bottenfisk som lever från flodmynningar med bräckvatten ut till öppet hav, gärna över sandbotten och intill rev.[4] Den kan gå ned till åtminstone 145 meters djup, men håller sig vanligen mellan 20 och 65 meter.[3]
Födan består av kräftdjur och fiskar.[4]
Prionotus evolans finns i västra Atlanten utanför Nordamerikas kust från Nova Scotia i Kanada till norra Florida i USA. Den är dock sällsynt norr om Cape Cod.[4]
Arten fiskas kommersiellt, främst som bifångst till annat fiske,[3] och används förutom till människoföda som industrifisk och till djurfoder. Sportfiske förekommer också.[4]
Prionotus evolans är en bottenfisk i familjen knotfiskar (Triglidae) som finns i västra Atlanten.
帶紋鋸魴鮄，為輻鰭魚綱鮋形目牛尾魚亞目角魚科的其中一種，分布於西大西洋區，從加拿大新斯科細亞省至美國佛羅里達州海域，棲息深度可達180公尺，體長可達45公分，為底棲性魚類，生活在沙底質海域，屬肉食性，以甲殼類、魚類等為食，可做為食用魚。
