By John F. Craig
The percid fishes (or perch family members) contain many species together with the perch, pikeperch, yellow perch, walleye and the darters. those species are of significant ecological and fiscal significance, being vital parts of the freshwater environment and leisure and advertisement fisheries.
Percid Fishes covers facets equivalent to systematics, morphology, biology, ecology, ailments and parasites and the commercial value of percid fisheries. certain emphasis is put in the ebook at the complicated dating among this kin of fishes and their setting and the way they reply to perturbations, specifically these brought about by way of humans.
the writer, John Craig who has loads of adventure engaged on those fishes in lots of of the nations during which they happen, has drawn jointly a very very important ebook which supplies a different, entire and crucial overview of this most vital team of fish.Content:
Chapter 1 Taxonomy and Distribution (pages 1–14):
Chapter 2 Morphology and Anatomy (pages 15–38):
Chapter three Age, progress and Mortality (pages 39–54):
Chapter four replica and improvement (pages 55–77):
Chapter five nutrition and Feeding (pages 78–107):
Chapter 6 Ionic and Water stability (pages 108–115):
Chapter 7 Swimming, pursuits and Migrations (pages 116–123):
Chapter eight Parasites and illnesses (pages 124–146):
Chapter nine inhabitants Dynamics and group constitution (pages 147–167):
Chapter 10 Fisheries and monetary value (pages 168–190):
Chapter eleven Aquaculture (pages 191–224): Patrick Kestemont and Charles Melard
Chapter 12 Etheostomatinae (pages 225–253): Lawrence M. Page
Chapter thirteen different Percinae and Luciopercinae (pages 254–261):
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The percid fishes (or perch kin) contain many species together with the perch, pikeperch, yellow perch, walleye and the darters. those species are of significant ecological and fiscal significance, being very important parts of the freshwater environment and leisure and advertisement fisheries. Percid Fishes covers points corresponding to systematics, morphology, biology, ecology, illnesses and parasites and the commercial value of percid fisheries.
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Extra info for Percid Fishes: Systematics, Ecology and Exploitation
Speciation and its ontology: The empirical consequences of alternative species concepts for understanding patterns and processes of differentiation. In: Otte D, Endler JA, eds Speciation and Its Consequences. Sunderland, Maryland: Sinauer Associates; 1989:28–59. 06. Darwin CR. On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for Life. London: J. Murray; 1859. 09. Dumont HJF. (Coordinating Editor). Guides to the Identification of Microinvertebrates of the Continental Waters of the World.
The problem of ionic loss at the critical period when the old exoskeleton is molted is partially overcome by the crayfish habit of consuming its shed exuvium as a way of extracting additional calcium ions. This behavior and the efficient osmoregulatory system of the crayfish (with gastrolith formation) allow this decapod to colonize a greater chemical range of habitats (see Chapter 22). c. Acidity In the last two decades, the catastrophic effects of acid precipitation and mine drainage on freshwater ecosystems have drawn great attention from scientists and politicians alike, but relatively unpolluted rainwater and runoff from thick forest litter are also slightly acidic (though not at lethal levels).
Differences in fish and invertebrate fauna in small streams vs large rivers). As with the previous view of rivers, it was inherently linear and main-channel-oriented. It focused on the channel width as a measure of openness to solar energy and thereby predicted the importance to food webs of instream primary production relative to riparian detrital inputs. This linear, clinal model of physical and ecological processes in rivers is widely discussed in college textbooks for general and stream ecology courses, despite substantial concerns about the model.