Echinobothrium bonasum sp. n., a New Cestode from the Cownose Ray, Rhinoptera bonasus (Mitchill 1815), in the Western North Atlantic

1980 ◽  
Vol 66 (6) ◽  
pp. 1036 ◽  
Author(s):  
Allen D. Williams ◽  
Ronald A. Campbell
Keyword(s):  
North Atlantic ◽  
Cownose Ray ◽  
Rhinoptera Bonasus

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

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.

Prey capture behavior and kinematics of the Atlantic cownose ray, Rhinoptera bonasus

Zoology ◽  
2006 ◽  
Vol 109 (3) ◽  
pp. 171-181 ◽  
Author(s):  
Desirée E. Sasko ◽  
Mason N. Dean ◽  
Philip J. Motta ◽  
Robert E. Hueter
Keyword(s):  
Prey Capture ◽  
Cownose Ray ◽  
Rhinoptera Bonasus ◽  
Prey Capture Behavior

scholarly journals Occurrence of Metacaligus rufus (Wilson, 1908) (Copepoda, Caligidae) parasitizing the cownose ray Rhinoptera bonasus (Mitchill, 1815) (Elasmobranchii, Myliobatidae) in Brazil

2017 ◽  
Vol 78 (3) ◽  
pp. 597-599
Author(s):  
R. Ducatti ◽  
V. Takatsuka ◽  
V. G. Azevedo ◽  
E. G. Sanches ◽  
F. Paschoal ◽  
...  
Keyword(s):  
Cownose Ray ◽  
Rhinoptera Bonasus
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