XXVI.—On Ancylus oblongus and A. fluviatilis
نویسندگان
چکیده
منابع مشابه
Genome‐wide single‐nucleotide polymorphism data reveal cryptic species within cryptic freshwater snail species—The case of the Ancylus fluviatilis species complex
DNA barcoding utilizes short standardized DNA sequences to identify species and is increasingly used in biodiversity assessments. The technique has unveiled an unforeseeably high number of morphologically cryptic species. However, if speciation has occurred relatively recently and rapidly, the use of single gene markers, and especially the exclusive use of mitochondrial markers, will presumably...
متن کاملCarbamyl phosphate synthesis in a land snail, Strophocheilus oblongus.
A carbamyl phosphate synthetase has been detected and partially characterized in hepatopancreas tissue of the land snail Strophocheitus oblongus. The enzyme is localized in mitochondria, utilizes L-glutamine, and shows an absolute requirement for N-acetyl-L-glutamate. This unique combination of properties distinguishes the snail enzyme from either of the previously described animal carbamyl pho...
متن کاملBiology and behaviour of the cercariae of a Sanguinicola sp. in the river Cilloruelo (Salamanca, Spain).
In the light of the hydrodynamic characteristics of the river Cilloruelo (province of Salamanca, Spain) and the results on the shedding of lophocercariae of a Sanguinicola sp. by naturally infected Ancylus fluviatilis, a discussion is made of the influence of different temperatures on shedding and survival of the cercariae. Comments are also made concerning the most likely periods and zones of ...
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...
متن کاملCryptic diversity and population structure at small scales : 1 The freshwater snail Ancylus ( Planorbidae , Pulmonata ) in 2 the Montseny mountain range
2 3 Anthropogenic impacts like intensified land use and climate change are severe threats to 2 4 freshwater biodiversity and effective biodiversity monitoring is therefore one of the most 2 5 urgent tasks. This is however often hampered by the lack of knowledge regarding the 2 6 number and ecology of species. Molecular tools have shown many freshwater taxa to 2 7 comprise morphologically crypti...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1855
ISSN: 0374-5481
DOI: 10.1080/037454809495420