Population Structure and Evolutionary History of Southern Flounder in the Gulf of Mexico and Western Atlantic Ocean

2012 ◽  
Vol 141 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Joel D. Anderson ◽  
William J. Karel ◽  
Allison C. S. Mione
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Evolutionary History ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
Southern Flounder ◽  
History Of

Age and growth of the great hammerhead shark, Sphyrna mokarran, in the north-western Atlantic Ocean and Gulf of Mexico

2010 ◽  
Vol 61 (9) ◽  
pp. 992 ◽  
Author(s):  
Andrew N. Piercy ◽  
John K. Carlson ◽  
Michelle S. Passerotti
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Biological Data ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Western Atlantic ◽  
K Value ◽  
Hammerhead Shark ◽  
Western Atlantic Ocean ◽  
North Western

The great hammerhead shark, Sphyrna mokarran, is a cosmopolitan species that is caught in a variety of fisheries throughout much of its range. The apparent decline of great hammerhead shark populations has reinforced the need for accurate biological data to enhance fishery management plans. To this end, age and growth estimates for the great hammerhead were determined from sharks (n = 216) ranging in size from 54- to 315-cm fork length (FL), captured in the Gulf of Mexico and north-western Atlantic Ocean. Growth curves were fitted using multiple models and evaluated using Akaike’s information criterion. The von Bertalanffy growth model was the best fitting model, with resulting growth parameters of L∞ = 264.2-cm FL, k = 0.16 year–1, t0 = –1.99 year for males, and L∞ = 307.8-cm FL, k = 0.11 year–1, t0 = –2.86 year for females. Annual band pair deposition was confirmed through marginal-increment analysis and a concurrent bomb radiocarbon validation study. Great hammerheads have one of the oldest reported ages for any elasmobranch (44 years) but grow at relatively similar rates (on the basis of von Bertalanffy k value) to other large hammerhead species from this region. The present study is the first to provide vertebral ages for great hammerheads.

Population structure of Squatina guggenheim (Squatiniformes, Squatinidae) from the south-western Atlantic Ocean

2014 ◽  
Vol 86 (1) ◽  
pp. 186-202 ◽  
Author(s):  
G. Garcia ◽  
S. Pereyra ◽  
V. Gutierrez ◽  
S. Oviedo ◽  
P. Miller ◽  
...  
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
The South ◽  
Western Atlantic ◽  
Western Atlantic Ocean

Ecology and natural history of the Caribbean reef squid Sepiotheuthis sepioidea (Phylum Mollusca, Class Cephalopoda)

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Melissa Ghadially
Keyword(s):  
Global Warming ◽  
Natural History ◽  
Atlantic Ocean ◽  
Water Column ◽  
Small Species ◽  
Western Atlantic ◽  
Caribbean Reef ◽  
Western Atlantic Ocean ◽  
History Of ◽  
The Caribbean

Cephalopod molluscs evolved from ancient cephalopods found during the Cambrian period around 550 million years ago. The Caribbean reef squid (Sepiotheuthis sepioidea) is a small species of cephalopod, up to 30cm in length, found in the tropical and subtropical waters of the western Atlantic Ocean. Throughout their lives these squid can be found in various places in the water column and on the reef. Aside from being a predator, the Caribbean reef squid is also prey for many species of fish as well as humans. Global warming and potential fishing threats are altering the reef squid’s habitat.

Western Atlantic Prochaetodermatidae from 35°N south to the Argentine Basin including the Gulf of Mexico (Mollusca: Aplacophora)

Zootaxa ◽  
2008 ◽  
Vol 1885 (1) ◽  
pp. 1 ◽  
Author(s):  
DMITRY L. IVANOVA ◽  
AMÉLIE H. SCHELTEMA
Keyword(s):  
North Carolina ◽  
New Species ◽  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Mediterranean Sea ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
Eastern Atlantic Ocean ◽  
Argentine Basin ◽  
Made In

Nine new species of Prochaetodermatidae from the western Atlantic Ocean south of 35°N (off North Carolina, off eastern Florida, Gulf of Mexico, Guiana Basin, Argentine Basin) are described: Chevroderma cuspidatum, Claviderma amplum, Cl. compactum, Cl. crassum, Cl. mexicanum, Prochaetoderma gilrowei, Niteomica captainkiddae, Spathoderma bulbosum, and S. quadratum. Four species are endemics, C. cuspidatum and S. quadratum, Gulf of Mexico; Cl. crassum, Guiana Basin, and Cl. compactum, Argentine Basin. Added to those described earlier for the northwestern, northern, and eastern Atlantic Ocean and Mediterranean Sea (Scheltema 1985; Scheltema & Ivanov 2000), they complete the descriptions of all Atlantic prochaetodermatid species known to us. Two previously described species are amphi-Atlantic: S. grossum Scheltema & Ivanov, described from the eastern Atlantic, was found in the collections made in the Guiana and Argentine Basins, and Ch. turnerae Scheltema, which had already been described from the northwestern and eastern Atlantic and the Argentine Basin, was not found in the Guiana Basin material.

Uroptychus atlanticus, a new species of squat lobster (Crustacea: Decapoda: Anomura: Chirostylidae) from the western Atlantic Ocean

Zootaxa ◽  
2017 ◽  
Vol 4227 (2) ◽  
pp. 295
Author(s):  
KEIJI BABA ◽  
MARY K. WICKSTEN
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Female Specimen ◽  
Western Atlantic ◽  
Squat Lobster ◽  
Western Atlantic Ocean ◽  
A New Species

A new species of squat lobster, Uroptychus atlanticus, is described on the basis of a female specimen taken at a depth of 713–841 m in the southeastern Gulf of Mexico. The new species is readily distinguished from all known species of the genus from the western Atlantic by the very spinose carapace and pereopods, and a transverse row of spines on each of the abdominal tergites 1 and 2. 

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