Age and growth of the smooth dogfish
(Mustelus canis) in the northwest Atlantic Ocean.
Biology The smooth dogfish has a very slender body and a prominent spiracle behind the eye.
Fishing The smooth dogfish is easily taken with hook and line using squid or shrimp bait.
CHLAMYDOSELACHIDAE (Frill Sharks) Chlamydoselachus anguineus Garman, 1884 Frill shark TRIAKIDAE (Smoothhound Sharks) Mustelus canis canis (Mitchill, 1815) Dusky smoothhound, Smooth dogfish Mustelus canis insularis Heemstra, 1997 Antillean smoothhound Mustelus higmani Springer and Lowe, 1963 Smalleye smoothhound Mustelus norrisi Springer, 1940 Florida smoothhound, Narrowfin smoothhound Mustelus sinusmexicanus Heemstra, 1997 Gulf smoothhound ODONTASPIDAE (Sand Tiger Sharks) Odontaspis ferox (Risso, 1810) Ragged-tooth shark, Smalltooth sand tiger shark (1) Nakaya, K.
Seasonal abundance, growth, and foraging habits of juvenile smooth dogfish, Mustelus canis, in a New Jersey estuary.
Smooth dogfish are demersal and typically are found in inshore continental shelf and slope waters (Compagno, 1984).
Recently, commercial harvest of smooth dogfish has increased on the east coast of the United States.
The purpose of this study was to determine the growth rates of smooth dogfish from the northwest Atlantic Ocean by using age estimates derived from vertebral growth-band counts.
Smooth dogfish were collected from NMFS groundfish and longline surveys, Virginia Institute of Marine Science (VIMS) longline surveys, Grice Marine Laboratory longline surveys, the Massachusetts state trawl survey, and by the Massachusetts Division of Marine Fisheries (MDMF).
To determine if there was a period of the year when smooth dogfish were growing at a faster rate, the mean total length of age-0 and age-1 smooth dogfish was plotted for each month.
Vertebrae were collected from 918 smooth dogfish ranging in size from 33 to 132 cm TL.
The oldest estimated age for a female smooth dogfish in the study was 16 years and age of the largest female was estimated at nine years old.
Species Captures Weight (kg) Atlantic sharpnose 4,197 5,199 Bonnethead 830 1,519 Smooth dogfish, Mustelus canis 134 344 Florida smoothhound, Mustelus norrisi 121 291 Carcharhinidae 85 99 Blacknose 81 226 Angel shark 59 159 Carcharhinus sp.
9/100 hook hours for large coastals) with eight shark species captured: Atlantic sharpnose, blacknose, smooth dogfish, spinner, blacktip, bull scalloped hammerhead, and great hammerhead.
Blacktips, sandbars, smooth dogfish, and spiny dogfish were the only sharks captured from longline sets with bottom salinities less than 32%; blacktip sharks were the only sharks captured from longline sets with salinities less than 30%.