Fish reproductive guilds downstream of dams

2014 ◽  
Vol 85 (5) ◽  
pp. 1489-1506 ◽  
Author(s):  
L. P. Vasconcelos ◽  
D. C. Alves ◽  
L. C. Gomes
Keyword(s):  
Reproductive Guilds

Reproductive Guilds of Fishes: A Proposal and Definition

1975 ◽  
Vol 32 (6) ◽  
pp. 821-864 ◽  
Author(s):  
Eugene K. Balon
Keyword(s):  
Feeding Habits ◽  
Point Of View ◽  
Feeding Strategies ◽  
Ecological Groups ◽  
Ecological Classification ◽  
Resource Exploitation ◽  
Spawning Grounds ◽  
Form And Function ◽  
Reproductive Guilds ◽  
And Function

The emergence of efficient ecosystem modelling is severely hampered by the need for an ecological classification of fishes. An earlier concept of ecological groups is here expanded to cover all living fishes. This ecological classification is based mainly on form and function in early developmental intervals, on preferred spawning grounds, and on features of reproductive behavior. Within the adaptations for reproduction and embryonic development two factors prevail — predators and the oxygen regime; consequently, spawning behavior and spawning grounds determine ensuing respiratory conditions and available protection from predators. The remaining factors are more or less associated with those two. From the point of view of resource exploitation, factors other than feeding habits governing density, biomass, and production are more important. In this sense reproductive guilds are more meaningful than feeding strategies, to which one usage of "guild" was limited.Thirty-two guilds putatively encompass all the 30,000 living fish taxa (or about 20,000 species) and form an ecological classification unrelated to the Linnean classification. The guilds retain phyletic significance in respect to reproductive systems and form a basis for the construction of models on natural and cultural succession. Number of guilds and frequency of taxa within guilds in a given area reflect geochronological sequences and invasion abilities of members of different guilds.

scholarly journals Fish beta diversity responses to environmental heterogeneity and flood pulses are different according to reproductive guild

2018 ◽  
Vol 16 (4) ◽  
Author(s):  
Ángela Gutiérrez C ◽  
Jean Carlo Gonçalves Ortega ◽  
Angelo Antonio Agostinho
Keyword(s):  
Parental Care ◽  
Beta Diversity ◽  
Environmental Heterogeneity ◽  
Linear Models ◽  
Fish Assemblages ◽  
Generalized Least Squares ◽  
The Other ◽  
Dispersal Capacity ◽  
Reproductive Guilds ◽  
Reproductive Guild

ABSTRACT In floodplain communities, beta diversity is influenced by different factors; however, environmental heterogeneity and floods are believed to be particularly influential. The influence of environmental heterogeneity and floods on beta diversity may vary among guilds that present different ecological traits. This study evaluated the correlation between the environmental heterogeneity and flood periods and the beta diversity of trophic and reproductive guilds of fish assemblages. Sampling was conducted quarterly between 2000 and 2012 in the upper Paraná River floodplain. The environmental heterogeneity and period (i.e., dry or flood) were associated with the beta diversity of each guild based on the results of generalized least squares linear models. Only guilds with parental care were influenced by the interaction between environmental heterogeneity and period. The beta diversity of the other guilds presented no relationship between environmental heterogeneity and period. It is likely that species with parental care presented less dispersal capacity, which increased the dissimilarity among assemblages. The higher dispersion rates of the other guilds may be responsible for the lack of relationship between the beta diversity and the environmental heterogeneity and period. In sum, these results suggest that reproductive guilds influence how environmental heterogeneity and floods affect beta diversity variation.

Landscape determinants of fish reproductive guilds

2021 ◽  
Author(s):  
David H. Keller ◽  
Gregory J. Barren ◽  
Richard J. Horwitz
Keyword(s):  
Reproductive Guilds

Reproductive Guilds of Percids: Results of the Paleogeographical History and Ecological Succession

1977 ◽  
Vol 34 (10) ◽  
pp. 1910-1921 ◽  
Author(s):  
Eugene K. Balon ◽  
Walter T. Momot ◽  
Henry A. Regier
Keyword(s):  
Key Words ◽  
Oxygen Content ◽  
Reproductive Behavior ◽  
Early Ontogeny ◽  
Ecological Succession ◽  
Spawning Ground ◽  
Short Term ◽  
Lake Metabolism ◽  
Reproductive Guilds

A holistic picture of the Percidae is attempted, exploring the theory of reproductive guilds. Seven guilds encompass all 163 species; forms related closely in terms of Linnean taxonomy may belong to very different guilds. Adaptations in spawning ground selection, other reproductive behavior and morpho-physiological features of early ontogeny all center on respiration and protection against predators. The adaptation of guarding enables survival in low densities as well as in an environment with decreasing oxygen content, or enables invasion of such an environment. The paleogeographical origin and distribution of percid fishes are reconstructed along these lines. Over the short term, guild succession is enhanced by changes in fluvial gradient and lake metabolism. Key words: Percidae, succession, reproductive guilds

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