Results 91 to 100 of about 46,338 (196)

The Effects of Nutrient Additions on Kokanee in Dworshak Reservoir, Idaho

Fisheries Management and Ecology, EarlyView.
ABSTRACT We investigated the effects of whole reservoir nitrogen (N) addition on kokanee growth in Dworshak Reservoir, Idaho. We hypothesized that N addition would improve the growth of kokanee (Oncorhynchus nerka) at a given level of abundance by increasing the availability of Daphnia, an important food source.
Sean M. Wilson, Matthew P. Corsi, Eric J. Stark, Eli A. Felts, Andrew M. Dux, Ryan S. Hardy   +5 more
wiley   +1 more source

Characteristics of the habitat for larval development of three bathylagid fish species (Pisces: Salmoniformes)

Ciencias Marinas, 1995
Three bathylagid smelt species were identified: Bathylagus ochotensis Schmidt 1938, Bathylagus wesethi Bolin 1938 and Leuroglossus stilbius Gilbert 1890.
GM Esqueda-Escárcega, S Hernández-Trujillo   +1 more
doaj   +1 more source

Decadal Rapid Change in Energetic Carrying Capacity for Juvenile Chum Salmon in the Sanriku Coast

Fisheries Oceanography, EarlyView.
ABSTRACT Adult returns to coastal rivers in Sanriku, located near the southernmost area of chum salmon distribution, have declined since 2010. Climate‐induced fluctuations in juvenile prey availability may affect growth and survival, which are linked to adult returns.
Yuki Iino, Yuichi Shimizu, Tomoki Sato, Takashi Kitagawa   +3 more
wiley   +1 more source

Extreme Temperatures Reduce Copepod Performance and Change the Relative Abundance of Internal Microbiota

Ecology and Evolution
Copepods are one of the most abundant invertebrate groups in the seas and oceans and are a significant food source for marine animals. Copepods are also particularly sensitive to elevated temperatures.
Quyen D. H. Vu, Linh P. Pham, Oanh T. Truong, Sang Q. Tran, Canh V. Bui, Minh‐Hoang Le, Binh T. Dang, Khuong V. Dinh   +7 more
doaj   +1 more source

Effect of zooplankton-mediated trophic cascades on marine microbial food web components (bacteria, nanoflagellates, ciliates) [PDF]

, 2009
To examine the grazing effects of copepod-dominated mesozooplankton on heterotrophic microbial communities, four mesocosm experiments using gradients of zooplankton abundance were carried out at a coastal marine site.
Hoppe, Hans-Georg, Jürgens, K., Sommer, Ulrich, Zöllner, Eckart   +3 more
core   +1 more source

Vertical Habitat Use by Japanese Jack Mackerel Trachurus japonicus Inferred From a Biologging Study in Tokyo Bay

Fisheries Oceanography, EarlyView.
ABSTRACT The movement ecology of Trachurus japonicus in the adult stage remains poorly understood because observing their underwater behavior over long periods is challenging. This study aimed to examine vertical habitat use by T. japonicus using electronic tags. Ninety fish were tagged and released in November 2022 in Tokyo Bay, Japan.
Junji Kinoshita, Yuki Fujinami, Junichi Imoto, Tohya Yasuda   +3 more
wiley   +1 more source

Variación espacio-temporal de la meiofauna submareal en una playa arenosa nororiental de Venezuela Spatio-temporal variation of subtidal meiofauna in a sandy beach from Northeastern Venezuela

Revista de Biología Tropical, 2013
La meiofauna incluye metazoos y foraminíferos bénticos que pasan a través de un tamiz de 500mm y son retenidos en malla de 40-63μm. Se estudió la variación espacial y temporal de la meiofauna en cuatro estaciones submareales a 1m de profundidad, de ...
Ildefonso Liñero Arana, Sol Ojeda, María Elena Amaro   +2 more
doaj  

Stage‐Specific Indicators of Northern Yellowtail Rockfish (Sebastes flavidus) Recruitment in the California Current Ecosystem

Fisheries Oceanography, EarlyView.
ABSTRACT Oceanographic and ecological conditions can be used to inform forecasts and decision‐making for marine resources, but the dominant drivers of recruitment variability remain poorly understood for many fish stocks. We developed a conceptual life‐history model of the oceanographic and ecological variables that influence the recruitment of ...
Megan L. Feddern, Amanda Darby, Kiva Oken, Nick Tolimieri   +3 more
wiley   +1 more source

Familia Pontellidae (Crustacea: Copepoda) en la Bahía La Ventosa, Oaxaca, México: Sistemática y ecología

Revista de Biología Tropical, 2003
Se presenta un estudio sobre la sistemática y notas ecológicas de los copépodos pláncticos de la Bahía de La Ventosa, Oaxaca, México. Se identificaron cinco especies: Labidocera acuta, L. lubbockii, Pontella agassizi, P.
Carlos Álvarez Silva, María Guadalupe Miranda Arce, Graciela De Lara-Isassi   +2 more
doaj  

Feeding ecology of the transparent goby Aphia minuta (Pisces, Gobiidae) in the northwestern Adriatic Sea

Scientia Marina, 2008
The feeding ecology of the transparent goby Aphia minuta was examined in spring (May 2003) in the coastal waters off Comacchio, in the northwestern Adriatic Sea. Stomach content analysis indicated A.
Mario La Mesa, Diego Borme, Valentina Tirelli, Elena Di Poi, Sara Legovini, Serena Fonda Umani   +5 more
doaj   +1 more source