Results 121 to 130 of about 1,710 (155)

Testicular maturation and regression in the common snook

Journal of Fish Biology, 1998
During the annual reproductive cycle, the lobular testis of Centropomus undecimalis undergoes height, width, and morphological changes which reflect five reproductive classes: regressed; early, mid‐, and late maturation; and regression. Histological criteria, particularly differences between continuous and discontinuous germinal epithelia, are used to ...
H. J. Grier, R. G. Taylor
openaire   +2 more sources

Energetics of Swimming in Juvenile Common Snook, Centropomus undecimalis

Environmental Biology of Fishes, 2002
Little research has been devoted to the investigation of swimming energetics and performance in lie-in-wait predators. This study evaluated activity metabolism and swimming performance in juvenile snook, Centropomus undecimalis, a lie-in-wait predator, by determining oxygen uptake in a tunnel respirometer.
S. Gregory Tolley, Joseph J. Torres
openaire   +1 more source

Catch-and-Release Mortality Rates of Common Snook in Florida

North American Journal of Fisheries Management, 2001
Abstract Mortality rates were determined for common snook Centropomus undecimalis that had been hooked and released in different localities throughout southern Florida. Researchers and cooperative anglers caught, tagged, and retained 470 common snook ranging from 205 to 1,120 mm total length in 23 experiments during June 1991–April 1995.
Ronald G. Taylor, James A. Whittington, Douglas E. Haymans   +2 more
openaire   +1 more source

Myxosporean Parasites of Common Snook in Florida

Journal of Aquatic Animal Health, 1993
Abstract Three species of myxosporeans were found in common snook Centropomus undecimalis in Florida. One of the species is described as Myxobolus centropomi n. sp. (trophozoites in gill, pseudobranch, and under scales), and another is described as Ceratomyxa choleospora n. sp. (trophozoites and spores in gallbladder, spores in fecal casts).
openaire   +1 more source

Embryonic and Early Larval Development in Hatchery-Reared Common Snook

North American Journal of Aquaculture, 2012
Abstract To gain an improved understanding of the early life history of common snook Centropomus undecimalis and refine hatchery production techniques for this species, a combination of digital photography and histological techniques were used to document the embryonic and early larval development of hatchery-reared individuals ...
Carlos Yanes-Roca, Nicole R Rhody, Michael Nystrom, Matthew L Wittenrich, Kevan L Main   +4 more
openaire   +1 more source

Digestive enzyme activities during early ontogeny in Common snook (Centropomus undecimalis)

Fish Physiology and Biochemistry, 2011
Common snook (Centropomus undecimalis) is one of the most important marine species under commercial exploitation in the Gulf of Mexico; for this reason, interest in developing its culture is a priority. However, larviculture remains as the main bottleneck for massive production.
L D, Jimenez-Martinez, C A, Alvarez-González, D, Tovar-Ramírez, G, Gaxiola, A, Sanchez-Zamora, F J, Moyano, F J, Alarcón, G, Márquez-Couturier, E, Gisbert, W M, Contreras-Sánchez, N, Perales-García, L, Arias-Rodríguez, J R, Indy, S, Páramo-Delgadillo, I G, Palomino-Albarrán   +14 more
openaire   +2 more sources

Annual Reproductive Cycle of the Common Snook: Endocrine Correlates of Maturation

Transactions of the American Fisheries Society, 1999
Abstract Wild common snook Centropomus undecimalis were captured off the Gulf coast of Florida over a 2-year period and sampled for serum and gonad tissue to characterize their annual reproductive cycle. During the summer months, levels of the sex steroid hormones estradiol-17β (E2) and testosterone (T) in females were significantly elevated above ...
Steven B. Roberts, Leslie F. Jackson, William King, Ronald G. Taylor, Harry J. Grier, Craig V. Sullivan   +5 more
openaire   +1 more source

Comparison of Retention Success for Multiple Tag Types in Common Snook

North American Journal of Fisheries Management, 2011
Abstract Tags are commonly used to uniquely identify fish in order to estimate population size, harvest rates, and fish behavior. However, some tags have the propensity to be shed (lost), which can bias results. To examine the shedding rates of external tags and the potential bias this introduces for common snook Centropomus undecimalis ...
Ross E. Boucek, Aaron J. Adams
openaire   +1 more source

Feeding Habits of Common Snook, Centropomus undecimalis, in Charlotte Harbor, Florida

Gulf and Caribbean Research, 2006
We examined the feeding habits, ontogenetic and seasonal diet variations, and predator size–prey size relationships of common snook, Centropomus undecimalis, in Charlotte Harbor, Florida, through stomach contents analysis. A total of 694 stomachs were extracted from common snook (300–882 mm standard length [SL]) during a 24-month period (March 2000 ...
Blewett, David A., Hensley, Rebecca A., Stevens, Philip W.   +2 more
openaire   +2 more sources

Maturation of female common snook Centropomus undecimalis: implications for managing protandrous fishes

Journal of Fish Biology, 2020
AbstractThe assumption for hermaphroditic fish species that mature individuals of the terminal sex arise directly from mature individuals of the primary sex has led to the use of sex ratios as a proxy for age at maturity (A50). The timing of transition and deficient energy reserves, however, can result in a delay between transition and spawning.
Joy M. Young, Beau G. Yeiser, James A. Whittington, Jynessa Dutka‐Gianelli   +3 more
openaire   +2 more sources