title: Evaluating the role of temperature in the reproduction of the yellow stingray (Urobatis jamaicensis).
abstract: We conducted a temperature-dependent reproductive study on Yellow Stingrays (Urobatis jamaicensis) at the John G. Shedd Aquarium, Chicago, Illinois. A group of eight and six female rays were mated in 22°C ("cold") and 27°C ("warm") water, respectively, over a two-year period. Mating behavior, gestation length, pup yields, body condition indices, and activity levels were compared throughout both temperature trials. Mating behavior (e.g., pre-copulatory pursuits and behavior) did not differ between temperature trials. Cold trial gestation was incomplete and yielded no pups, while the warm trial resulted in three successful births and one stillborn birth. Body condition indices and overall activity were significantly decreased in the cold trials. These data suggest consequences for rearing Yellow Stingrays in cooler water and should aid in successful reproduction of U. jamaicensis at zoos and aquariums.
authors.affiliation: Fishes Department, John G. Shedd Aquarium, 1200 South Lakeshore Drive, Chicago, Illinois; Northeastern Illinois University, Department of Biology-BBH 358G, 5500 North St. Louis Avenue, Chicago, Illinois.
authors.forename: Tess C
authors.initials: TC
authors.lastname: Lesniak
authors.forename: Aaron E
authors.initials: AE
authors.lastname: Schirmer
authors.forename: Charles R
authors.initials: CR
authors.lastname: Knapp
mesh_terms: D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D000836:Animals, Zoo; D001824:Body Constitution / Q000502:physiology; D018940:Elasmobranchii / Q000502:physiology*; D005260:Female; D009043:Motor Activity / Q000502:physiology*; D012098:Reproduction / Q000502:physiology*; D012726:Sexual Behavior, Animal / Q000502:physiology*; D013696:Temperature
keywords: behavior; gestation; mating; poikilotherm