Results 161 to 170 of about 7,521 (187)
Some of the next articles are maybe not open access.
Fertilization, survival and growth of hybrids between Crassostrea gigas and Crassostrea sikamea
Fisheries Science, 2019Crossbreeding is a powerful tool for animal breeding and genetic improvement in aquaculture. In this work, artificial interspecific hybridization was carried out and three crosses were successfully produced, namely Crassostrea gigas (GG), C. sikamea (SS) and C. sikamea ♀ × C. gigas ♂ (SG), although C. gigas ♀ × C.
Hongqiang Xu +4 more
openaire +1 more source
Fertilization Interference Between Crassostrea ariakensis and Crassostrea virginica: A Gamete Sink
Journal of Shellfish Research, 2008Published data indicate that spawning seasons for the Asian oyster Crassostrea ariakensis and the eastern oyster C. virginica overlap. Hybrids can form, but the larvae are not viable. If C. ariakensis is introduced into Chesapeake Bay and synchronous spawning occurs with native C.
David Bushek +5 more
openaire +1 more source
Ultrastructure of the spermatozoon of the oyster, Crassostrea virginica
Journal of Ultrastructure Research, 1960Electron microscopy reveals the presence in oyster sperm of an axial body, a massive structure extending from the proximal area of the nucleus to the top of the acrosome. The location and structure of this body suggests that it is concerned with the formation and extrusion of the acrosome filament as described for several invertebrates.
P S, GALTSOFF, D E, PHILPOTT
openaire +2 more sources
Aquaculture, 1993
Abstract Of the numerous reports of hybridization attempts in the genus Crassostrea, none has been confirmed genetically. Three replicates of a 2×2 factorial mating of Crassostrea gigas×C. rivularis (C. arakiensis) were produced to examine the viability of this cross.
Standish K. Allen, Patrick M. Gaffney
openaire +1 more source
Abstract Of the numerous reports of hybridization attempts in the genus Crassostrea, none has been confirmed genetically. Three replicates of a 2×2 factorial mating of Crassostrea gigas×C. rivularis (C. arakiensis) were produced to examine the viability of this cross.
Standish K. Allen, Patrick M. Gaffney
openaire +1 more source
Haplosporidiosis of the Pacific oyster, Crassostrea gigas
Journal of Invertebrate Pathology, 1991Haplosporidan parasites were observed in 10/100 spat and 1/171 adult Pacific oysters, Crassostrea gigas, reared in Matsushima Bay, Japan. Eight of the infected spat contained mild to severe plasmodial infections. The multinucleated plasmodia were 6-12 microm x 7-15 microm and were associated with an infiltration of hemocytes that occurred throughout ...
C S, Friedman +3 more
openaire +2 more sources
Immunological capabilities of the oyster Crassostrea virginica
Comparative Biochemistry and Physiology, 1969Abstract 1. 1. The oyster Crassostrea virginica was found to clear secondary injections of T2 bacteriophage more rapidly than primary injections. 2. 2. The clearance rates, however, were not as pronounced as in the lemon shark, Negaparion brevirostris . 3. 3.
R T, Acton, E E, Evans, J C, Bennett
openaire +2 more sources
Experimental hexamitiasis in the oyster Crassostrea virginica
Journal of Invertebrate Pathology, 1968Abstract In vitro growth characteristics of Hexamita sp. and course of experimental hexamitiasis initiated in oysters via the oral and intracardial route were used in an attempt to analyze the controversial issue of whether Hexamita is an oyster pathogen.
S Y, Feng, L A, Stauber
openaire +2 more sources
Aconitase from the oyster Crassostrea virginica
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 19821. The presence of aconitase activity in the oyster. Crassostrea virginica, has been demonstrated. 2. Low levels of activity were found in the different tissues with highest level in digestive diverticular and lowest level in muscle. 3. The conversion of both citrate and iso-citrate to cis-aconitate suggests the presence of an enzyme system capable of ...
openaire +2 more sources
Hemagglutinin in the blood of the oyster Crassostrea virginica
Journal of Invertebrate Pathology, 1966Abstract A protein in the blood of normal oysters ( Crassostrea virginica ) agglutinates red blood cells of several vertebrate species. Adsorption tests indicate that this material has a moderate degree of specificity. It exerts an opsonic effect on rabbit red blood cells in vitro and probably influences the rate of phagocytosis of red cells and ...
openaire +2 more sources
Journal of Shellfish Research, 2008
Abstract The proposed introduction of Crassostrea ariakensis along the mid-Atlantic Coast of the United States has sparked controversy regarding ecological, economic, and human health consequences. Previous research has focused primarily on the ecological and socioeconomic implications of this initiative, yet few studies have assessed the potential ...
Tanya J. McGhee +3 more
openaire +1 more source
Abstract The proposed introduction of Crassostrea ariakensis along the mid-Atlantic Coast of the United States has sparked controversy regarding ecological, economic, and human health consequences. Previous research has focused primarily on the ecological and socioeconomic implications of this initiative, yet few studies have assessed the potential ...
Tanya J. McGhee +3 more
openaire +1 more source