scholarly journals Composition and structure of the larval fish community in the NW Iberian upwelling system during the winter mixing period

2015 ◽  
Vol 533 ◽  
pp. 245-260 ◽  
Author(s):  
JM Rodriguez ◽  
A Cabrero ◽  
J Gago ◽  
A Garcia ◽  
R Laiz-Carrion ◽  
...  
Keyword(s):  
Fish Community ◽  
Larval Fish ◽  
Upwelling System ◽  
Composition And Structure

scholarly journals Larval Fish Community in the Northwestern Iberian Upwelling System during the Summer Period

Oceans ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 700-722
Author(s):  
Sonia Rábade Uberos ◽  
Alba Ruth Vergara Castaño ◽  
Rosario Domínguez-Petit ◽  
Fran Saborido-Rey
Keyword(s):  
Community Composition ◽  
Fish Community ◽  
Larval Fish ◽  
Life Stages ◽  
Early Life Stages ◽  
Summer Period ◽  
Specific Composition ◽  
Larval Production ◽  
High Diversity ◽  
Northwestern Iberian Peninsula

The Galician shelf (northwestern Iberian Peninsula) is a highly dynamic area with an important multi-species fisheries industry that exploits resources from several habitats, characterized by being not only highly diverse, rich, and productive but also seasonally and interannually variable. Early life stages of different species are distributed throughout the year, with fluctuating abundances and community composition. Likewise, the influence of environmental factors and processes on larval production and survival remains unknown. Sampling was carried out in July 2012, and all the larvae obtained were identified to establish the specific composition of the community in a summer upwelling scenario. The results show no zonation in the species distribution, a consequence of the mixing effects of the upwelling and eddies, with high diversity but low abundance, which render in a slight predominance of a few species. Due to the dependence of planktonic populations on upwelling events, which was not highly pronounced in 2012, we cannot conclude that this was a typical conformation of the Galician summer larval fish community, but it is a first approach to comprehend the community composition.

Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques

2010 ◽  
Keyword(s):  
Fish Community ◽  
Larval Fish ◽  
Rank Order ◽  
Food Resource ◽  
Rio Grande ◽  
Reproductive Phenology ◽  
Comparative Genomic ◽  
Spawning Cues ◽  
Long Term Studies

<em>Abstract</em>.—Timing of reproduction differs among fish species in nearly all rivers, and reproductive phenology is predicted to strongly influence freshwater fish community structure in some systems. Despite its potential importance, few long-term studies of reproductive phenology in river fishes have been conducted in a community context. Here, we evaluated timing and sequence of reproduction of fishes in the Rio Grande, New Mexico over 9 years. Dates and rank order of first appearance of larvae varied among species and years, but three consistent spawning guilds were evident: early season, late season, and species that were intermediate in rank order of spawning. We hypothesized that appropriate reproductive timing enhanced recruitment to the extent that spawning cues predicted future availability of critical resources for larvae. Analysis of historical discharge records indicated that present and future discharge exhibited positive autocorrelation for up to 90 d. Likewise, larval fish densities were highest at moderate flows and coincident with high food resource abundance. However, stable isotope data for larval and adult fishes indicated considerable overlap in food resource use among larvae and adult fishes. There may be pressure for spawning time to converge among species to match the appearance of seasonal resources, but to diverge to lessen competition among young-of-year fishes in a classical trade-off scenario. More long-term studies are needed, and we propose that an integrated research program that combines detailed analysis of reproductive phenology, food web dynamics, and comparative genomic analyses could forge connections between environmental variation in spawning cues, recruitment success, and community assembly in river fishes. Such an integrated program could lead to better predictions about fish community responses to global warming, especially in vulnerable arid-land systems like the Rio Grande.

Seasonal Variation of Larval Fish Community in Jinhae Bay, Korea

2018 ◽  
Vol 36 (2) ◽  
pp. 140-149
Author(s):  
Seong Yong Moon ◽  
Jeong-Hoon Lee ◽  
Jung-Hwa Choi ◽  
Hwan Sung Ji ◽  
Joon-Taek Yoo ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Fish Community ◽  
Larval Fish ◽  
Jinhae Bay

Summer distribution and abundance of larval and juvenile fishes in the western Ross Sea

1999 ◽  
Vol 11 (1) ◽  
pp. 54-60 ◽  
Author(s):  
M. Vacchi ◽  
M. La Mesa ◽  
S. Greco
Keyword(s):  
Fish Community ◽  
Ross Sea ◽  
Larval Fish ◽  
Fish Larvae ◽  
Pleuragramma Antarcticum ◽  
Terra Nova Bay ◽  
Single Station ◽  
Summer Distribution ◽  
The Antarctic ◽  
Western Ross Sea

Ichthyoplankton samples were collected during the November–December 1994 Italian Antarctic Oceanographic Cruise carried out to the western Ross Sea. A midwater trawl (Hamburg Plankton Net) was used to collect samples at 26 stations. Larval and juvenile specimens of 21 species belonging to six families (Artedidraconidae, Bathydraconidae, Channichthyidae, Macrouridae, Nototheniidae and Paralepididae) were caught from surface to 380 m depth. Mean relative abundance of larval fish in the whole area was about 2.7 specimens 1000 m−3 of filtered water. Pleuragramma antarcticum were the most abundant as postlarvae and juveniles. Larval and postlarval specimens of Chionodraco myersi were also abundant and widespread. The high number of Trematomus lepidorhinus (570 larvae) found in a single station off Terra Nova Bay (74°48′75“S, 164°36′90”E) was noteworthy. Our data demonstrate that the species diversity of the larval fish community in the western Ross Sea is much as found elsewhere in the Antarctic and show a greater abundance of fish larvae in inshore than in offshore waters.

scholarly journals Exploring the larval fish community of the central Red Sea with an integrated morphological and molecular approach

PLoS ONE ◽  
2017 ◽  
Vol 12 (8) ◽  
pp. e0182503 ◽  
Author(s):  
Stamatina Isari ◽  
John K. Pearman ◽  
Laura Casas ◽  
Craig T. Michell ◽  
Joao Curdia ◽  
...  
Keyword(s):  
Red Sea ◽  
Fish Community ◽  
Larval Fish ◽  
Molecular Approach

scholarly journals Environmental factors affecting larval fish community in the salt marsh area of Guadiana estuary (Algarve, Portugal)

2015 ◽  
Vol 79 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Renata Gonçalves ◽  
Ana Dulce Correia ◽  
Natasa Atanasova ◽  
Maria Alexandra Teodósio ◽  
Radhouan Ben-Hamadou ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Environmental Factors ◽  
Fish Community ◽  
Larval Fish ◽  
Factors Affecting ◽  
Marsh Area ◽  
Salt Marsh Area ◽  
Guadiana Estuary

scholarly journals EVALUACIÓN DE LAS ASOCIACIONES DE PECES DE LOS ARRECIFES CORALINOS DEL CENTRO INTERNACIONAL DE BUCEO MARÍA LA GORDA, PARQUE NACIONAL GUANAHACABIBES, CUBA.

2009 ◽  
Vol 1 ◽  
pp. 111 ◽  
Author(s):  
Dorka Cobián Rojas ◽  
Pedro Pablo Chevalier Monteagudo
Keyword(s):  
National Park ◽  
Fish Community ◽  
Trophic Structure ◽  
Sampling Site ◽  
Structural Complexity ◽  
Composition And Structure ◽  
Density Values ◽  
Fish Abundances ◽  
Los Grupos ◽  
Dry And Rainy Seasons

El buceo contemplativo en los arrecifes coralinos es una de las pocas actividades autorizadas en el área manejada por el Centro Internacional de Buceo María la Gorda del Parque Nacional Guanahacabibes. Se evaluó la composición y estructura de las asociaciones de peces en los arrecifes utilizados por el Centro Internacional de Buceo María la Gorda. Considerando la posibilidad de cambios estacionales en la densidad y composición de los peces, se realizaron muestreos en las épocas seca y lluviosa. Se realizaron censos visuales en ocho sitios de buceo (12 transectos de 50 x 2 m en cada uno), en dos biotopos característicos del arrecife. Se estimaron los índices de diversidad, equitatividad, riqueza de especies, densidad y biomasa de peces. Los valores de densidad  promedio y los índices de diversidad por estaciones no mostraron diferencias significativas entre las épocas. Se registraron 134 especies en toda el área. La abundancia de peces fue superior en los sitios de mayor complejidad estructural, correspondientes a la zona de camellones de la pendiente arrecifal. Se observó un predominio de peces de pequeña talla y pobre presencia de peces de mediana y gran talla. Las familias con mayor densidad fueron Pomacentridae y Labridae, y las de mayor biomasa Lutjanidae y Labridae. La estructura trófica estuvo dominada por los plantófagos y omnívoros. Aunque se observaron carnívoros de tallas medianas, su densidad fue inferior al resto de los grupos, lo cual parece ser consecuencia de la pesca furtiva.Recreational SCUBA diving on the coral reefs is one of the few activities allowed in the area managed by the Centro Internacional de Buceo María la Gorda at the Guanahacabibes National Park. The composition and structure of fish associations were evaluated on the reefs visited by users of the diving center. To assess possible seasonal changes in fish community densities and composition surveys were carried during the dry and rainy seasons. Visual censuses were carried out at eight diving sites comprising two characteristic reef biotopes. Indices for diversity, evenness, species richness, density, and fish biomass were estimated. Mean density values by sampling site did not show significant differences between seasons. A total of 134 species were recorded in the area. Fish abundances were greater in sites of higher structural complexity, matching areas of ridges on the reef slope. Prevalence of small-sized fish and a general poor presence of medium to high-sized fish were observed. Fish families with the higher densities were Pomacentridae and Labridae, and those with the higher biomass were Lutjanidae and Labridae. The trophic structure was dominated by phytophagous and omnivorous fish. Medium-sized carnivorous fish were observed, however, their densities were much lower than for the rest of the trophic groups, which could be a consequence of illegal fishing activities.

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