Results 221 to 230 of about 9,140 (253)
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Effects of Frequency of Egg and Fry Removal on Spawning by Tilapia nilotica in Hapas
The Progressive Fish-Culturist, 1987Abstract Tilapia nilotica were spawned in small-mesh net enclosures called hapas. During a 5-week period, eggs and fry were removed from mouth-brooding females at examination intervals of 2, 4, 7, or 10 d. A decrease in time between examination intervals increased the total number of spawns collected (P < 0.05), but more spawns were obtained per ...
Verdegem, M.C.J., McGinty, A.S.
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Fecundity and Spawning Frequency of Captive Tessellated Darters–Fractional Spawners
Transactions of the American Fisheries Society, 1985Abstract In 1982–1983, 15 pairs of captive tessellated darters Etheostoma olmstedi proved to be fractional spawners and produced from two to eight clutches (19 to 324 eggs per clutch; mean = 158) between the last week of April and the first week of August, in northeastern Pennsylvania. Average clutch size for individual pairs ranged from 49 to 204. The
William F. Gale, William G. Deutsch
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Environmental Biology of Fishes, 2002
We studied the diel timing of spawning in the demersally spawning Hawaiian damselfish, Dascyllus albisella, from mid-June to late-September 1997 at two small patch reefs in Hawaii. Our objectives were to elucidate daily timing of spawning in relation to water temperature, diel timing of hatching, and short-period spawning synchrony.
Kazue Asoh, Tomoko Yoshikawa
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We studied the diel timing of spawning in the demersally spawning Hawaiian damselfish, Dascyllus albisella, from mid-June to late-September 1997 at two small patch reefs in Hawaii. Our objectives were to elucidate daily timing of spawning in relation to water temperature, diel timing of hatching, and short-period spawning synchrony.
Kazue Asoh, Tomoko Yoshikawa
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Fecundity and spawning frequency of Sarotherodon galilaeus in a concrete pond
Aquaculture, 1981Abstract Fecundity of 26 specimens of Sarotherodon galilaeus cultured in a small concrete pond, 6.3 × 1.4 × 1.6 m, was determined by the “whole-count” method. The fish were not fed artificially but depended on natural phytoplankton growth, mainly Chlorococcus and Chlorella , for food.
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Evaluation of spawning frequency in a Mediterranean sardine population (Sardina pilchardus sardina)
Marine Biology, 2003The postovulatory follicle method was used to assess the frequency of spawning of sardine (Sardina pilchardus sardina) in the Central Aegean Sea (eastern Mediterranean) in November–December 1999 and 2000. A field-based aging key for postovulatory follicles (POFs) was developed, and preliminary evidence is presented of a temperature influence on the ...
K. Ganias +3 more
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Technical Notes: Spawning Frequency and Egg Production of Captive Spotted Seatrout
The Progressive Fish-Culturist, 1996Abstract Nine mature spotted seatrout Cynoscion nebulosus (seven females and two males) were placed in a recirculating-water culture system at the University of Miami Experimental Hatchery in July 1993. Photo-period and water temperature were maintained at 14 h light: 10 h dark and 27.5°C.
Brian B. Wisner +2 more
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Spawning frequency of the anchovyEngraulis capensis
South African Journal of Marine Science, 1994Spawning frequency was determined for the first time for the South African anchovy Engraulis capensis using the incidence of females with one-day-old post-ovulatory follicles. Daily spawning frequency attained values of 15, 12, 10, 9,12 and 11% during November of 1985, 1986, 1987, 1988, 1989 and 1990 respectively.
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South African Journal of Marine Science, 1996
Size at maturity, gonad development and spawning frequency of pilchard Sardinops sagax collected during research cruises on the western Agulhas Bank between August 1993 and March 1994 are investigated. The minimum length of sexually mature females was 16 cm caudal length (Lc ) and the length at 50% maturity was 17–17,5 cm Lc .
T. R. Akkers, Y. C. Melo, W. Veith
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Size at maturity, gonad development and spawning frequency of pilchard Sardinops sagax collected during research cruises on the western Agulhas Bank between August 1993 and March 1994 are investigated. The minimum length of sexually mature females was 16 cm caudal length (Lc ) and the length at 50% maturity was 17–17,5 cm Lc .
T. R. Akkers, Y. C. Melo, W. Veith
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Journal of Fish Biology, 2017
To improve knowledge of goosefish Lophius americanus' reproductive biology, females were collected during 2009–2012 from the Mid‐Atlantic Bight shelf region of the U.S. east coast. Batch fecundity increased with total length (LT), from 229 100 to 2 243 300 mature oocytes per female (LT range: 55·5–112 cm; n = 54).
R S, McBride +4 more
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To improve knowledge of goosefish Lophius americanus' reproductive biology, females were collected during 2009–2012 from the Mid‐Atlantic Bight shelf region of the U.S. east coast. Batch fecundity increased with total length (LT), from 229 100 to 2 243 300 mature oocytes per female (LT range: 55·5–112 cm; n = 54).
R S, McBride +4 more
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Fecundity and Spawning Frequency of Caged Bluntnose Minnows–Fractional Spawners
Transactions of the American Fisheries Society, 1983Abstract Eleven pairs of bluntnose minnows Pimephales notatus produced from 7 to 19 clutches of eggs between May 27 and August 28. Clutches ranged in size from 5 to 547 eggs. Average clutch size ranged from 93 to 239. The total number of eggs spawned per pair ranged from 1,112 to 4,195 (mean = 2,396).
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