Journal ArticleDOI
Observations on the Life History of the Spotted Darter, Poecilichthys maculatus (Kirtland)
TLDR
It is acknowledged that the data submitted above only indicate that a difference in the rate of digestion of different kinds of organisms does occur; and they are not sufficient for the actual determination of evaluation factors.Abstract:
of digestion, should not affect the ratio of the rates for the different organisms. This should be tested experimentally. It is acknowledged that the data submitted above only indicate that a difference in the rate of digestion of different kinds of organisms does occur; and they are not sufficient for the actual determination of evaluation factors. The latter should be determined with larger samples according to the method outlined above.read more
Citations
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Book ChapterDOI
Morphological correlates of ecological specialization in darters
TL;DR: While competition from established taxa undoubtedly has prevented additional habitat invasions, some darters appear to have overcome barriers through feeding site diversification and sexually selective characteristics, correlated with type of reproductive behavior and habitat, often make the male more conspicuous and therefore are constrained by predation.
Journal ArticleDOI
Observation on the Reproductive Habits of Darters (Pisces-Percidae)
TL;DR: The darters comprise an important group of the temperate freshwater fish fauna of the Atlantic drainage of North America as discussed by the authors, and over one half of the almost one hundred species are confined to the Mississippi River drainage.
Journal ArticleDOI
Microhabitat Segregation of the Threatened Spotted Darter (Etheostoma maculatum) and Closely Related Orangefin Darter (E. bellum)
TL;DR: Differences in microhabitat use in sympatric populations of the closely related spotted darter and orangefin darter are examined to reveal species-specific differences in substrate use.
Journal ArticleDOI
Reproduction, Fecundity, Sexual Dimorphism and Sex Ratio of Etheostoma fonticola (Osteichthyes: Percidae)
John R. Schenck,B. G. Whiteside +1 more
TL;DR: Etheostoma fonticola is an endangered species of fish which spawns year-round in the relatively constant temperature headwaters of the San Marcos River and in Spring Lake and appears to have two spawning peaks, one in August and the other in late winter to early spring.
References
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