Results 31 to 40 of about 9,423 (285)
Sexual selection in hermaphrodites, sperm and broadcast spawners, plants and fungi [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2016 Darwin was the first to recognize that sexual selection is a strong evolutionary force. Exaggerated traits allow same-sex individuals to compete over access to mates and provide a mechanism by which mates are selected. It is relatively easy to appreciate how inter- and intrasexual selection work in organisms with the sensory capabilities to perceive ...
Madeleine Beekman +3 more
openaire +3 more sources
Allochrony in Atlantic Lumpfish: Genomic and Otolith Shape Divergence Between Spring and Autumn Spawners. [PDF]
Ecol EvolABSTRACTAllochrony is a form of reproductive isolation characterized by differences in the timing of spawning and may play a crucial role in the genetic and phenotypic divergence within species. The Atlantic lumpfish (Cyclopterus lumpus) is known to spawn in spring and autumn. However, the role of allochrony on the genomic structure of this species has
Horaud M +9 more
europepmc +7 more sources
No relationship between fecundity and annual reproductive rate in bony fish [PDF]
, 2004 Background. There is still a widespread notion that bony fishes with high fecundities are more productive and therefore more resistant to overexploitation.
Froese, Rainer, Luna, S.
core +1 more source
Searching for threshold shifts in spawner–recruit data
Canadian Journal of Fisheries and Aquatic Sciences, 2009 Relationships between spawning fish (S) and surviving offspring (recruits, R) are typically assumed to be continuous and nonlinear. However, R may change abruptly with small changes in S if population-, community-, or ecosystem-scale processes trigger low adult reproduction and cause populations to shift abruptly to regimes of low recruitment.
Garvey, James E +2 more
openaire +2 more sources
Известия ТИНРОSpawners of chum salmon Oncorhynchus keta were examined in the basins of Prostor and Kurilsky Bays (Iturup Island, Kuril Islands) from September 23 to November 2, 2024. The portion of females naturally increased during the spawning run and was 43.3 %, on
A. N. Elnikov, O. V. Zelennikov
doaj +1 more source
Nitrogen, 2021 Two contrasting estuarine copepods, Acartia tonsa and Eurytemora carolleeae, the former a broadcast spawner and the latter a brood spawner, were fed a constant carbon-based diatom diet, but which had a variable N:P content, and the elemental composition (
Katherine M. Bentley +2 more
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2013 The aim of this work was to develop a methodological framework for the management of local eel stocks that integrates habitat restoration with optimal fishery management.
Ciccotti E. +5 more
doaj +1 more source
Известия ТИНРОThe main biological parameters of chum salmon Oncorhynchus keta are presented for the spawners caught during the research expedition conducted to the lower reaches of Indigirka in August-September 2023.
A. I. Nikiforov, L. N. Karpova
doaj +1 more source
Recurrent die-offs of adult coho salmon returning to spawn in Puget Sound lowland urban streams.
PLoS ONE, 2011 Several Seattle-area streams in Puget Sound were the focus of habitat restoration projects in the 1990s. Post-project effectiveness monitoring surveys revealed anomalous behaviors among adult coho salmon returning to spawn in restored reaches.
Nathaniel L Scholz +16 more
doaj +1 more source
Gonad Maturity of Coconut Crab (Birgus latro) in Pasoso Island, Central Sulawesi
Jurnal Akuakultur Indonesia, 2009 Study on gonad maturity of coconut crab (Birgus latro) was carried out from June 2004 to January 2005. Crabs were collected by some gears such as trap, net and by hand.
. Sulistiono +3 more
doaj +1 more source