Results 71 to 80 of about 1,928 (232)

Culvert baffle design to improve fish passage for small‐bodied fishes: A rapid evidence synthesis

Conservation Science and Practice, Volume 7, Issue 7, July 2025.
The overall weight of evidence indicates that the addition of baffles generally increases the passage of small‐bodied fishes through culverts. However, there is an emerging consensus that baffles that minimize the generation of large recirculation zones while maximizing the area of low velocities are most suitable for enhancing passage.
Paul A. Franklin, Cindy F. Baker
wiley   +1 more source

Efecto de la temperatura en la sobrevivencia embrionaria del puye Galaxias maculatus (Jenyns, 1842). [PDF]

, 2014
Se evaluó el efecto de seis temperaturas constantes en la sobrevivencia embrionaria, periodo embrionario y periodo de eclosión de Galaxias maculatus de 7 a 22ºC, en condiciones de laboratorio. Los resultados de la sobrevivencia embrionaria fueron: 90,6

core  

Common bully (Gobiomorphus cotidianus) and mosquitofish (Gambusia affinis) shift littoral zooplankton community composition to smaller bodied taxa

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 2, Page 339-355, June 2025.
ABSTRACT We investigated the effects of native common bully (Gobiomorphus cotidianus) and non‐native western mosquitofish (Gambusia affinis) on zooplankton assemblages in an outdoor mesocosm experiment. Twenty‐one 100 L mesocosms containing zooplankton were assigned either four G. cotidianus, four G. affinis, or were left as a control group (i.e.
Flavian Ember, Nicholas Ling, Ian C. Duggan   +2 more
wiley   +1 more source

Stages in the normal development of Galaxias maculatus attenuatus (Jenyns) [PDF]

New Zealand Journal of Marine and Freshwater Research, 1968
Summary The sequence of embryonic development is described for Galaxias maculatus attenuatus (Jenyns). Standard stages are described and the rate of development at two different constant temperatures is given. Field results are compared with these data. It appears that
openaire   +1 more source

Helminth parasitism of Galaxias maculatus (Jenyns 1842) in southwestern Australia [PDF]

Ecology of Freshwater Fish, 2006
Abstract –  One cestode, Ligula sp. [possibly Ligula intestinalis (L.)], one trematode, Diplostomum sp., and two nematode parasitic worms, Eustrongylides sp. [possibly Eustrongylides gadopsis (Royal Society of South Australia, 64, 340)] and Contracaecum sp.
Chapman, A., Hobbs, R.P., Morgan, D.L., Gill, H.S.   +3 more
openaire   +1 more source

Nuclear DNA content in the red conger eel Genypterus chilensis (Guichenot, 1881) (Actinopterygii: Ophidiidae) [PDF]

, 2012
Los estudios sobre contenido de ADN nuclear en el género Genypterus son escasos, y el presente trabajo entrega por primera vez la estimación del contenido de ADN nuclear de Genypterus chilensis con un valor 2C = 1,0 + 0,06 pg, valor cercano al descrito ...

core   +1 more source

Accounting for interspecies and intraspecies variation in swimming performance for fish passage solutions

Journal of Applied Ecology, Volume 62, Issue 2, Page 231-241, February 2025.
Previous maximum traversable water speeds for fish passage designs have been based on average swimming ability, but this approach only enables fish that are better than the average swimmers of their species to overcome barriers. This study highlights the importance of evidence‐based designs for successful fish passage solutions to account for the ...
Rachel M. B. Crawford, Eleanor Gee, Brendan Hicks, Dana Nolte, Deborah Dupont, Paul A. Franklin   +5 more
wiley   +1 more source

Alimentación de larvas de Galaxias maculatus (Jenyns, 1842) con rotíferos enriquecidos con ω-3 PUFA cultivadas a diferentes condiciones de salinidad: efectos sobre el crecimiento, sobrevivencia y perfil de ácidos grasos [PDF]

, 2014
Despite the well known importance of ω-3 polyunsaturated fatty acids (PUFA) in marine and freshwater fish larvae, there are few studies on how essential fatty acid requirements and composition on whole body can be altered by changes in water salinity ...

core  

A Jump‐Driven Self‐Exciting Stochastic Fish Migration Model and Its Fisheries Applications

Natural Resource Modeling, Volume 38, Issue 1, February 2025.
ABSTRACT We introduce a stochastic continuous‐time model via a self‐exciting process with jumps to describe a seasonal migration event of diadromous fish exemplified by Ayu Plecoglossus altivelis altivelis. The dynamics of the stored population at a point in a river, waiting for their upward migration, increases by the inflow of fish from the ...
Hidekazu Yoshioka, Kazutoshi Yamazaki
wiley   +1 more source

Características poblacionales y ciclo de vida de Diplodon chilensis (d'Orbigny, 1835) (Hyriidae, Bivalvia) en el lago Gutiérrez (Patagonia, Argentina)

Ecología Austral, 2002
Diplodon chilensis (Hyriidae, Bivalvia) es uno de los moluscos más representativos de la fauna de invertebrados de las aguas dulces de la región patagónica.
Liliana Semenas, Norma Brugni
doaj