Age and Growth, Movements and Distribution of the Cownose Ray, Rhinoptera bonasus, in Chesapeake Bay

Estuaries ◽  
1987 ◽  
Vol 10 (2) ◽  
pp. 153 ◽  
Author(s):  
Joseph W. Smith ◽  
John V. Merriner
Keyword(s):  
Chesapeake Bay ◽  
Age And Growth ◽  
Cownose Ray ◽  
Rhinoptera Bonasus

scholarly journals Distribution extension of Glyphobothrium zwerneri Williams & Campbell, 1977 (Tetraphyllidea: Serendipeidae) from the cownose ray Rhinoptera bonasus (Mitchill, 1815) (Myliobatiformes: Myliobatidae) from Campeche, México

Check List ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 211
Author(s):  
Griselda Pulido-Flores ◽  
Scott Monks
Keyword(s):  
Gulf Of Mexico ◽  
Chesapeake Bay ◽  
Geographic Distribution ◽  
Southern Limit ◽  
Cownose Ray ◽  
Rhinoptera Bonasus ◽  
Wide Range

The collection of four specimens of Glyphobothrium zwerneri extends the geographic distribution of the species from the original locality (Chesapeake Bay, Virginia, U.S.A.) to at least Ciudad del Carmen, Campeche, México, at the southern limit of the Gulf of Mexico. The species is a parasite of Rhinoptera bonasus, a stingray that is thought to migrate within a wide range, suggesting that conservation efforts should be consistent within the stingray’s range, just as is necessary for birds and other species that migrate.

scholarly journals Protein and cholesterol electrophoresis of plasma samples from captive cownose ray (Rhinoptera bonasus)

2015 ◽  
Vol 27 (6) ◽  
pp. 688-695 ◽  
Author(s):  
Carolyn Cray ◽  
Marilyn Rodriguez ◽  
Cara Field ◽  
Alexa McDermott ◽  
Lynda Leppert ◽  
...  
Keyword(s):  
Plasma Samples ◽  
Cownose Ray ◽  
Rhinoptera Bonasus

Age and Growth of Loggerhead Turtles (Caretta caretta) from Chesapeake Bay

Copeia ◽  
1995 ◽  
Vol 1995 (1) ◽  
pp. 204 ◽  
Author(s):  
RuthEllen C. Klinger ◽  
John A. Musick
Keyword(s):  
Chesapeake Bay ◽  
Caretta Caretta ◽  
Age And Growth ◽  
Loggerhead Turtles

Hard prey specialists or opportunistic generalists? An examination of the diet of the cownose ray, Rhinoptera bonasus

2007 ◽  
Vol 58 (1) ◽  
pp. 135 ◽  
Author(s):  
A. B. Collins ◽  
M. R. Heupel ◽  
R. E. Hueter ◽  
P. J. Motta
Keyword(s):  
Feeding Behaviour ◽  
Stomach Contents ◽  
Relative Importance ◽  
Charlotte Harbor ◽  
Severe Damage ◽  
Important Prey ◽  
Cownose Ray ◽  
Rhinoptera Bonasus ◽  
Group Feeding ◽  
Index Of Relative Importance

Atlantic cownose rays (Rhinoptera bonasus) are benthic, suction feeders whose foraging activities have been implicated in severe damage to commercial shellfish industries. With jaws highly modified for durophagy, it has been assumed that R. bonasus are crushing specialists that feed primarily upon hard molluscan prey. Stomach contents from R. bonasus caught within Florida’s Charlotte Harbor estuary between July 2003 and July 2004 were analysed using the index of relative importance (IRI) to determine most important prey types. Prey items were identified from 38 families and fell into nine distinctive groups. The three most dominant prey groups were crustaceans (%IRI = 55.31), polychaetes (%IRI = 25.20) and bivalves (%IRI = 12.58). Shoalmates had more similar diets than non-shoalmates, suggesting group feeding. Most small or softer-bodied prey consumed were relatively intact, indicating lack of prey processing and capture through suction feeding. All larger, harder-bodied prey showed evidence of crushing (fractured and broken shells). Although R. bonasus has been characterised as a hard prey specialist, these results suggest it may behave as an opportunistic generalist, modifying feeding behaviour to consume readily available prey.

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