Results 61 to 70 of about 5,263 (206)

Free Plasma Estrogens in the Channel Catfish.

Experimental Biology and Medicine, 1966
SummaryIsolation of free plasma estrogens from blood and ovaries of the Channel Catfish, Ictalurus punctatus, led to identification of 16-ketoestradiol, estriol, epiestriol, estrone, estradiol-17α and estradiol-17β. It was found that as the ovary increases in weight at 1–3 weeks before spawning, there is a gradual increase for all free plasma estrogens.
B E, Feleftheriou, K W, Boehlke, O W, Tiemeier   +2 more
openaire   +2 more sources

Relationship between the environment and the occurrence of invasive pumpkinseed Lepomis gibbosus in lotic and lentic habitats

Journal of Fish Biology, EarlyView.
Abstract The pumpkinseed Lepomis gibbosus is a freshwater fish species native to North America. It has been introduced to Europe, where it is recognized as one of the worst aquatic invaders due to its high adaptability and invasive potential. This study aimed to determine the presence of L. gibbosus in small to medium‐sized water bodies, both lotic and
Ivan Špelić, Marko Glogoški, Marina Piria   +2 more
wiley   +1 more source

ANALISIS EFISIENSI SALURAN PEMASARAN IKAN LELE DI DESA RASAU JAYA 1 KECAMATAN RASAU JAYA KABUPATEN KUBU RAYA

Jurnal Social Economic of Agriculture, 2014
This study aims to determine the level of efficiency in the marketing channel catfish every marketing agencies. The method used is a survey method. Sampling was conducted with a random sample of respondents is simple.
Dani Apriono, Eva Dolorosa, Imelda
doaj   +1 more source

A new sexually dimorphic species of the armoured catfish genus Neoplecostomus (Siluriformes: Loricariidae) from Neotropical Atlantic coastal drainages

Journal of Fish Biology, EarlyView.
Abstract A new species of the small‐sized armoured catfish genus Neoplecostomus is described from Neotropical Atlantic coastal drainages, in southeast Brazil. The new species can be readily diagnosed from all congeners by having the first plates of the ventral series reduced in size, rounded and ventrally displaced, resulting in a naked band between ...
Pedro L. C. Uzeda, Tiago C. Pessali, Axel M. Katz, Felipe P. Ottoni, Francisco Langeani, Priscilla C. Silva   +5 more
wiley   +1 more source

Effects of Fermented Feed Feeding Mode on Intestinal Flora and Metabolomics of Channel Catfish (Ictalurus punctatus)

Progress in Fishery Sciences
This study performed rational feeding of fermented feed to channel catfish and determined its effects on growth, the intestinal bacterial community, and metabolomics of channel catfish.
Liying ZHOU, Liqiang ZHONG, Shiyong ZHANG, Xiaohui CHEN, Hongyan LIU, Minghua WANG   +5 more
doaj   +1 more source

Take my breath away: Defining the oxygen saturation threshold for fish cortisol stress response

Journal of Fish Biology, EarlyView.
Abstract Human activities are affecting the number, size and severity of hypoxic zones in aquatic ecosystems. As oxygen is one of the most important abiotic factors affecting fish biology, exposure to low levels of dissolved oxygen may lead to a reduction in fitness.
Sébastien Alfonso, Benjamin Geffroy, Pierluigi Carbonara, Lola Toomey, Eduardo Bessa   +4 more
wiley   +1 more source

Impacts of predator odours and conspecific disturbance cues on minnow thermal tolerance

Journal of Fish Biology, EarlyView.
Abstract Warming waters can affect fish community dynamics, potentially exacerbating predator–prey asymmetries in behavioural and physiological metrics of thermal tolerance. Further, differing responses of prey fish species to concurrent predation risk and warming highlight the need to understand these impacts in various contexts, especially with at ...
V. Groves, M. Morissette, L. Nagpal, N. E. Mandrak, L. J. Chapman   +4 more
wiley   +1 more source

Morpho-histological evaluation of young-of-the-year channel catfish (Ictalurus punctatus Raf., 1818) in extremely wintering conditions

Ribogospodarsʹka Nauka Ukraïni, 2017
Purpose. To investigate the effect of extreme low water temperatures on morphological and histological parameters of young-of-the-year (YOY) channel catfish (Clarias gariepinus (Burchell, 1822) during wintering at a warm water fish farm.
N. Yesipova, G. Schwartz, Y. Tuchapsky
doaj   +1 more source

Melanoma and Other Melanistic Lesions in Brown Bullhead Ameiurus nebulosus From Waterbodies in the Northeastern United States and Canada: Identification of Risk Factors

Journal of Fish Diseases, EarlyView.
ABSTRACT Melanistic lesions, including non‐raised black areas due to proliferations of melanocytes and melanomacrophages in the dermis and epidermis, as well as raised black areas consistent with melanoma, are described in brown bullhead (BBH) Ameiurus nebulosus from three water bodies in the northeastern United States and Quebec, Canada.
Vicki S. Blazer, Peter Emerson, Matthew Bodnar, Thomas Jones, David R. Russell, Matthew Pehrson, Cheyenne R. Smith, Danielle Cleveland, Mark J. Henderson, Patricia M. Mazik   +9 more
wiley   +1 more source

Temperature, Disinfectant Concentration and Bacterial Innate Properties Influence the Disinfection of Bacterial Pathogens Relevant to Catfish Aquaculture

Journal of Fish Diseases, EarlyView.
ABSTRACT Aquaculture systems suffer a wide range of losses, mostly due to bacterial disease outbreaks, and the use of disinfectants is a routine practice for controlling the spread of pathogenic organisms globally. Including Aeromonas hydrophila, Streptococcus agalactiae and Edwardsiella tarda, implicated for natural disease outbreaks and economic ...
Aloysius Chimezie Adibe, Margaret Crumlish   +1 more
wiley   +1 more source