Results 51 to 60 of about 2,759 (167)

Growth and age differences between two male alternative reproductive tactics in the plainfin midshipman

Journal of Fish Biology, EarlyView.
Abstract The plainfin midshipman (Porichthys notatus Girard, 1854) is a toadfish with two distinct reproductive male tactics: ‘guarder males’ and ‘sneaker males’. These two tactics are anatomically, physiologically and behaviourally distinct from one another at sexual maturity, but it remained unclear whether these two male types remain fixed or ...
Micah J. Quindazzi, Angus Townsend, Aneesh P. H. Bose, Sigal Balshine, Francis Juanes   +4 more
wiley   +1 more source

Plasticity in the reproductive biology of Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake following lake trout Salvelinus namaycush invasion

Journal of Fish Biology, EarlyView.
Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs, Molly A. H. Webb, Christopher S. Guy, Todd M. Koel   +3 more
wiley   +1 more source

Biological aspects and population dynamics of the European pilchard Sardina pilchardus (Walbaum, 1792) in the southeastern Mediterranean waters

Journal of Fish Biology, EarlyView.
Abstract The European pilchard, Sardina pilchardus, is a key small pelagic fish sustaining Mediterranean ecosystems and fisheries. This study represents the first comprehensive biological and population dynamics assessment of the European pilchard by applying the length‐based spawning potential ratio (LB‐SPR) approach to S.
Mohab Badreldin, Reda M. Fahim, Lafi Al Solami, Hatem H. Mahmoud   +3 more
wiley   +1 more source

VON BERTALANFFY GROWTH CURVE OF THE RUDD (Scardinius erythrophthalmus L.) FROM THE LAKE KLJUČIĆ BRDO, CENTRAL CROATIA [PDF]

Croatian Journal of Fisheries, 2011
The rudd is a cyprinid herbivorous freshwater fish. The samples of rudd have been taken from the „Ključić brdo“ location. The arithmetic mean of length for each age group was determined according to Peterson, Danish ichthyologist.
Marina Piria, Darija Vrbanec, Gordana Đurđević   +2 more
doaj  

Análise da curva de crescimento de machos Hereford Growth curve analysis for Hereford cattle males

Ciência e Agrotecnologia, 2003
Para estudar a função de melhor ajustamento ao crescimento de bovinos Hereford, foram utilizados dados de 160 machos, ajustando-se as funções de Brody, Gompertz, Logística, Richards e von Bertalanffy.
Ana Rita de Assumpção Mazzini, Joel Augusto Muniz, Luiz Henrique de Aquino, Fabyano Fonseca e Silva   +3 more
doaj   +1 more source

Age and growth of the endemic groovebelly stingray (Dasyatis hypostigma), a heavily exploited batoid in the Brazilian Meridional Margin (21–34° S)

Journal of Fish Biology, EarlyView.
Abstract Life‐history data are often lacking for exploited elasmobranchs, jeopardizing proper management and conservation measures for this vulnerable group. Herein, we provided age and growth estimates for the groovebelly stingray (Dasyatis hypostigma), a medium‐sized, heavily exploited batoid endemic to the southwestern Atlantic Ocean.
Giovanni Arlan Torres, Rodrigo Silvestre Martins, Luciano Gomes Fischer, Luís Gustavo Cardoso, Rodrigo Sant'Ana, Bruno Mourato   +5 more
wiley   +1 more source

Modeling the weight gain of freshwater-reared rainbow trout ( Oncorhynchus mykiss ) during the grow-out phase

Revista Brasileira de Zootecnia, 2020
We used five nonlinear models to calculate the weight gain of rainbow trout (122.11±15.6 g) during the final grow-out phase of 98 days under three different feed types (two commercials diets, A and B, and one experimental diet, C) in triplicate groups ...
Peter Charrie Janampa-Sarmiento, Rodrigo Takata, Thiago Mendes de Freitas, Licius de Sá Freire, Marcelo Menezes de Britto Pereira, Vincent Lugert, Guilherme Melgaço Heluy, Marcelo Maia Pereira   +7 more
doaj   +1 more source

Phenotypic divergence may facilitate co‐occurrence in Acanthopagrus species (Family: Sparidae)

Journal of Fish Biology, EarlyView.
Abstract Understanding why closely related species co‐occur is one fundamental question in ecology. The seabream genus Acanthopagrus Peters, 1855 (Sparidae) is broadly distributed across the Indo‐Pacific, with four species, A. arabicus and A. sheim (yellowfin group), and A. bifasciatus and A.
Yu‐Jia Lin
wiley   +1 more source

Endocrine‐Nutritional Synergy Between Sex Inversion and Microencapsulated Bioactives Enhances Growth, Intestinal Development, and Oxidative Stability in Nile Tilapia Larvae

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT This study evaluated the combined effects of sex inversion and microencapsulated supplementation with organic acids and essential oils on growth performance, tissue morphology, gene expression, and oxidative status in Nile tilapia (Oreochromis niloticus) larvae.
Jaísa Casetta, Eliane Gasparino, Caroline Isabela da Silva, Simone Siemer, Gabriela Hernandes Cangianelli, Ricardo Souza Vasconcellos, Ricardo Pereira Ribeiro, Graciele Caroline Mari, Jaqueline Roesler, Juliana Sofientini, Diogo de Oliveira Marques, Stefania Claudino‐Silva   +11 more
wiley   +1 more source

Comparative age and growth of common snook Centropomus undecimalis (Pisces: Centropomidae) from coastal and riverine areas in Southern Mexico

Revista de Biología Tropical, 2013
Common snook Centropomus unidecimalis is an important commercial and fishery species in Southern Mexico, however the high exploitation rates have resulted in a strong reduction of its abundances.
Martha A. Perera-Garcia, Manuel Mendoza-Carranza, Wilfrido Contreras-Sánchez, Allyse Ferrara, Maricela Huerta-Ortiz, Raúl E. Hernández-Gómez   +5 more
doaj   +2 more sources