Annual reproductive cycle and fecundity of <i>Scorpaena notata</i> (Teleostei, Scorpaenidae)
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منابع مشابه
Annual cycle of stored spermatozoawithin the ovaries of Helicolenus dactylopterus dactylopterus (Teleostei, Scorpaenidae)
The aim of this work was to analyse the ultrastructure of storage crypts and stored spermatozoa, and to describe changes during the annual reproductive cycle of the bluemouth Helicolenus dactylopterus dactylopterus, which has internal fertilization and a zygoparous mode of reproduction. Spermatozoa had elongated heads and long midpieces, two characteristics which are thought to be fairly advanc...
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The reproductive biology of albacore tuna, Thunnus alalunga, in the South Pacific Ocean was investigated with samples collected during broad-scale sampling between 2006 and 2011. Histology was done in a single laboratory according to standard protocols and the data analysed using generalized linear mixed-effects models. The sex ratio of albacore was female biased for fish smaller than approxima...
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The annual reproductive cycles of the Japanese sipunculans Siphonosoma cumanense (Keferstein) and Phascolosoma scolops (Selenka, de Man & Biilow) were studied based on size, density, and frequency distribution of gametes from May 1989 to November 1990 and October 1989 to February 1991, respectively. Aliquots from the total volume of the diluted coelomic fluid from each individual were analyzed....
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The annual reproductive cycle of peal oyster Pinctada fucata was characteised by documenting gonadal development and changes in serum levels of estradiol-17b (E2), testosterone (T) and progesterone (P) in the wild bivalve caught in natural beds in the Persian Gulf throughout the year. Bivalve populations employed in this study spawn in June-July and November-December. The pearl oysters had grou...
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Reproductive organ development, plasma sex steroid concentrations and fur growth patterns were determined for pubescent and adult mink of both sexes, at 1tc~ 8-week intervals, between July and the following June. Plasma estradiol concentrations and weights (mg/kg) of ovaries, oviducts and uteri decreased slightly in both pubescent and adult females during the first half of anestrus (July to Oct...
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ژورنال
عنوان ژورنال: Scientia Marina
سال: 2005
ISSN: 1886-8134,0214-8358
DOI: 10.3989/scimar.2005.69n4555