First evidence for postzygotic reproductive isolation between two populations of Eurasian perch (Perca fluviatilis L.) within Lake Constance
نویسندگان
چکیده
منابع مشابه
Postglacial colonization shows evidence for sympatric population splitting of Eurasian perch (Perca fluviatilis L) in Lake Constance.
Previous microsatellite analysis showed that two subpopulations of perch (Perca fluviatilis L) exist in Lake Constance. This raises questions of whether (i). Lake Constance was colonized by two populations that diverged in allopatry, or (ii). the two subpopulations diverged in sympatry. Sequence analysis of a 365 bp mtDNA fragment (5'-end of the D-loop) of perch from Lake Constance and adjacent...
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The importance of overwinter mortality of 0+ perch (Perm fluviatilis L.) in central European lakes was estimated using a stochastic simulation model. The probability of overwinter mortality of a perch co hort was calculated by using a model developed for yellow perch (P. flavescens Mitchill). Winter duration from a long-term data set and the length of perch at the end of the first year from fi...
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The monogenean gill parasites of the genus Ancyrocephalus (Creplin 1839; Ancyrocephalidae, Dactylogyridae) are monoxenous parasites of freshwater fish (Ergens 1966; Simkov a et al. 2003; Simkov a, Matejusov a & Cunningham 2006). Adult trematodes locate mainly on the gills of the host, where they produce eggs that are released into the aquatic environment. The eggs hatch into free-living, ciliat...
متن کاملCompetition for food between perch (Perca fluviatilis L.) and invasive ruffe (Gymnocephalus cernuus (L.)) in re-oligotrophic Lake Constance
The effect of group size on routine metabolic rate (RMR) and activity of the two shoaling percids Eurasian perch (Perca fluviatilis) and ruffe (Gymnocephalus cernuus) was studied using twin flow intermittent respirometry and time-lapse video techniques. In both species, we found a clear group effect. In isolated fish, oxygen consumption was up to two times as high as in groups of eight fish, wi...
متن کاملSperm characteristics in perch Perca fluviatilis L
Sperm production is a crucial factor for the potential reproductive success of males in many species (Nakatsuru & Kramer, 1982). Especially under strong sperm competition, higher sperm numbers in the ejaculates are likely to increase a male’s chance of fertilization (Parker et al., 1996). But sperm production is limited by physiological constraints, e.g. by testis size, which often depends on t...
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ژورنال
عنوان ژورنال: Frontiers in Zoology
سال: 2008
ISSN: 1742-9994
DOI: 10.1186/1742-9994-5-3