Results 21 to 30 of about 49,400 (161)

The Fecundity of the whipfin silver-biddy fish, Gerres filamentosus (Cuvier, 1829) In The Hurghada Red Sea, Egypt. [PDF]

open access: yesJournal of Bioscience and Applied Research, 2016
Fecundity estimates were made on a total of 92 mature fish of whipfin Silver-biddy, Gerres filamentosus (Cuvier, 1829) of different lengths and weights, collected during the early June of 2010 to October 2010.
Taher M. Abu El-Nasr
doaj   +1 more source

Identification of Specific Nuclear Genetic Loci and Genes That Interact With the Mitochondrial Genome and Contribute to Fecundity in Caenorhabditis elegans

open access: yesFrontiers in Genetics, 2019
Previous studies have found that fecundity is a multigenic trait regulated, in part, by mitochondrial-nuclear (mit-n) genetic interactions. However, the identification of specific nuclear genetic loci or genes interacting with the mitochondrial genome ...
Zuobin Zhu   +13 more
doaj   +1 more source

No relationship between fecundity and annual reproductive rate in bony fish [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2004
Background. There is still a widespread notion that bony fishes with high fecundities are more productive and therefore more resistant to overexploitation.
R. Froese, S. Luna
doaj   +3 more sources

Genetic and environmental influences on the size-fecundity relationship in Aedes albopictus (Diptera: Culicidae): Impacts on population growth estimates? [PDF]

open access: yesPLoS ONE, 2018
Population growth models are integral to ecological studies by providing estimates of population performance across space and time. Several models have been developed that estimate population growth through correlates of demographic traits, as measuring ...
Katie S Costanzo   +2 more
doaj   +1 more source

Length-weight relationships and reproductive biology of commercially important fishes from Ribb Reservoir, Ethiopia

open access: yesFisheries and Aquatic Sciences, 2023
It is important to understand the biological aspects of fish for fishing management. This study was conducted from February through October 2021. A total of 1,629 fishes were collected using different fishing gears.
Agumassie Tesfahun Asres   +2 more
doaj   +1 more source

Fecundity of the Far-Eastern flatfishes Pleuronectiformes. 2. Comparative taxonomic analysis: fecundity, abundance and distribution of the species

open access: yesИзвестия ТИНРО, 2017
Comparative analysis is made for absolute, species-specific and total fecundity of 31 flatfish species in the North Pacific from North America to the Japan Sea. Normally the individuals of larger size have higher fecundity. Similarity between the species
Yury P. Diakov
doaj   +1 more source

"A Method for the Estimation of Fecundability." [PDF]

open access: yesStudies in Family Planning, 1975
AbstractA new method for the estimation of the mean and variance of fecundability is described. The data input required for this procedure is the distribution of the interval from marriage to first birth, or from the resumption of the conception risk after contraception to the subsequent birth.
openaire   +2 more sources

IMPACT survey: IMpaired fecundity in Physicians and Association with Clinical Time

open access: yesJournal of the American College of Emergency Physicians Open, 2020
Objective Studies suggest female physicians experience higher rates of infertility than the general population. The overall objective of this study was to determine the rate of impaired fecundity in a sample of female emergency physicians and compare it ...
Melissa Parsons   +5 more
doaj   +1 more source

Preliminary estimate of spawning frequency and batch fecundity of Brazilian flathead, Percophis brasiliensis, in coastal waters off Buenos Aires Province

open access: yesScientia Marina, 2001
Spawning frequency and batch fecundity were estimated for Brazilian flathead, Percophis brasiliensis, in Argentine coastal waters. Samples of this species were collected during the spawning period in November 1998 and 1999. Spawning frequency, determined
M. I. Militelli, G. J. Macchi
doaj   +1 more source

The cost of male aggression and polygyny in California sea lions (Zalophus californianus).

open access: yesPLoS ONE, 2010
In polygynous mating systems, males often increase their fecundity via aggressive defense of mates and/or resources necessary for successful mating. Here we show that both male and female reproductive behavior during the breeding season (June-August ...
Leah R Gerber   +4 more
doaj   +1 more source

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