Endoparasites of European perch Perca fluviatilis fry: role of spatial segregation
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چکیده
منابع مشابه
Endoparasites of European perch Perca fluviatilis fry: role of spatial segregation.
A total of 246 perch Perca fluviatilis L. fry, 20 to 106 d old from 3 different reservoir subpopulations (epipelagic perch fry, EPF; bathypelagic perch fry, BPF; littoral perch fry, LPF), were examined for parasites. Six species of endoparasites were found: the nematode Camallanus lacustris was the most common, followed by the cestodes Proteocephalus percae, Bothriocephalus claviceps, Glanitaen...
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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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متن کاملParasite identification, succession and infection pathways in perch fry (Perca fluviatilis): new insights through a combined morphological and genetic approach.
Identification of parasite species is particularly challenging in larval and juvenile hosts, and this hampers the understanding of parasite acquisition in early life. The work described here employs a new combination of methods to identify parasite species and study parasite succession in fry of perch (Perca fluviatilis) from Lake Constance, Germany. Classical morphological diagnostics are comb...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 2009
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao02090