Revised Estimates of Age and Growth of the Sandbar Shark (Carcharhinus plumbeus) from the Western North Atlantic

1992 ◽  
Vol 49 (7) ◽  
pp. 1474-1477 ◽  
Author(s):  
John G. Casey ◽  
Lisa J. Natanson
Keyword(s):  
North Atlantic ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus

Age and growth of the sandbar shark (Carcharhinus plumbeus) were determined from tag and recapture data covering a 26-yr period (1964–90). Results were compared with previously published age and growth estimates based primarily on rings in vertebrae. Recent long-term tag returns suggest that the sandbar shark grows much slower than previously proposed and may take nearly 30 yr to reach maturity. Revised von Bertalanffy parameters (sexes combined) are L∞ = 186, k = 0.046, and t0 = −6.45. The limitations of ageing elasmobranchs solely from rings in vertebrae and the need for validating rings in hardparts of fishes are discussed.

Age and Growth of the Sandbar Shark (Carcharhinus plumbeus) from the Western North Atlantic

1985 ◽  
Vol 42 (5) ◽  
pp. 963-975 ◽  
Author(s):  
J. G. Casey ◽  
H. L. Pratt Jr. ◽  
C. E. Stillwell
Keyword(s):  
North Atlantic ◽  
Fork Length ◽  
Age And Growth ◽  
Adult Size ◽  
Von Bertalanffy ◽  
Frequency Data ◽  
Sandbar Shark ◽  
Length Frequency ◽  
Carcharhinus Plumbeus ◽  
Length Frequency Data

Age and growth of the sandbar shark (Carcharhinus plumbeus) was determined from rings in the vertebrae of 475 individuals, tagging data from 220 sharks at liberty for up to 17 yr, and length–frequency data from 2594 individuals. The oldest male sandbar aged in this study was 15 yr old and 154 cm fork length (FL); the oldest female was 21 yr old and 204 cm FL. The sexes grew at similar rates, 5.2–7.3 cm/yr. Females reached a larger adult size. Age to maturity was estimated at 13 yr in males and 12 yr in females. Tag returns indicated that sandbar sharks may live for over 30 yr. von Bertalanffy parameters for males are L∞ = 257, K = 0.0501, t0 = −4.5 and for females are L∞ = 299, K = 0.040, t0 = −4.9.

Age and growth of the forkbeard Phycis phycis (Gadidae) from the Azorean archipelago, North Atlantic

2009 ◽  
Vol 89 (3) ◽  
pp. 629-633 ◽  
Author(s):  
Ana Rita Costa Abecasis ◽  
Angela Canha ◽  
Dália Reis ◽  
Mário Rui Pinho ◽  
João Gil-Pereira
Keyword(s):  
North Atlantic ◽  
Preparation Method ◽  
Growth Parameters ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Target Species ◽  
North Eastern ◽  
Main Target ◽  
Slow Growing ◽  
Phycis Phycis

The forkbeard Phycis phycis is one of the main target species of the demersal fishery in the Azores, north-eastern Atlantic. Age and growth of the forkbeard were studied using 477 otoliths from individuals caught between April 2000 and August 2004. Otoliths were burned and sectioned, a preparation method that improved the easiness of readings. Individuals ranged from 21 to 71 cm in total length, and their estimated ages between 2 and 18 years old. Forkbeard is a relatively slow growing, long lived species, that does not show sexual dimorphism in growth. The von Bertalanffy growth parameters estimated for the Azorean forkbeard were L∞ = 79.64 cm, k = 0.09 yr−1 and t0 = −1.88 years.

Validated age and growth of the sandbar shark, Carcharhinus plumbeus (Nardo 1827) in the waters off Western Australia

2006 ◽  
Vol 77 (3-4) ◽  
pp. 385-400 ◽  
Author(s):  
Rory B. McAuley ◽  
Colin A. Simpfendorfer ◽  
Glenn A. Hyndes ◽  
Rick R. Allison ◽  
Justin A. Chidlow ◽  
...  
Keyword(s):  
Western Australia ◽  
Age And Growth ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus

Age and growth of sandbar shark, Carcharhinus plumbeus, in northeastern Taiwan waters

2004 ◽  
Vol 70 (1) ◽  
pp. 83-96 ◽  
Author(s):  
Shoou-Jeng Joung ◽  
Yih-Yia Liao ◽  
Che-Tsung Chen
Keyword(s):  
Age And Growth ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus

Genetic polyandry and sexual conflict in the sandbar shark, Carcharhinus plumbeus, in the western North Atlantic and Gulf of Mexico

2006 ◽  
Vol 16 (1) ◽  
pp. 187-197 ◽  
Author(s):  
DAVID S. PORTNOY ◽  
ANDREW N. PIERCY ◽  
JOHN A. MUSICK ◽  
GEORGE H. BURGESS ◽  
JOHN E. GRAVES
Keyword(s):  
Gulf Of Mexico ◽  
North Atlantic ◽  
Sexual Conflict ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus

Developmental stages of Alebion lobatus Cressey, 1970 (Copepoda: Euryphoridae) found parasitic on the sandbar shark (Carcharhinus plumbeus (Nardo, 1827)) in the western North Atlantic, and a phylogenetic analysis of the genus Alebion Krøyer, 1863

1989 ◽  
Vol 67 (6) ◽  
pp. 1578-1598 ◽  
Author(s):  
George W. Benz
Keyword(s):  
Phylogenetic Analysis ◽  
Body Surface ◽  
North Atlantic ◽  
Developmental Stages ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus ◽  
Female Adult ◽  
Male And Female ◽  
Frontal Filament ◽  
Three Stages

Three stages of copepodids, two preadults, and male and female adult Alebion lobatus collected from sandbar sharks (Carcharhinus plumbeus) in the western North Atlantic are described. Copepodids were found on the external body surface of hosts in hollows which were apparently formed by the absence of one to several placoid scales. A frontal filament was not observed in any developmental stage and the second antennae appeared to be the primary prehensile appendages. Two equally most parsimonious cladograms are presented as hypotheses of phylogenetic relationship for the eight known species of Alebion.

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