<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In July and August 2010, the Lincoln-Petersen capture-recapture method was used to assess the size and basic structure of a newly established population of the endangered in Poland cyprinid fish lake minnow, <italic>Eupallasella percnurus</italic> (Pall). The population that inhabits a small (0.08 ha) peat excavation site in the village of Kowalicha near Radzymin (Mazowieckie Voivodeship, Poland) was initiated in 2004-2006 using the translocations of a total of 1530 cultivated individuals, mostly juveniles aged 0+. The total size of the <italic>E. percnurus</italic> population was estimated to be 600 individuals excluding aged 0+. The population size is not considered to be large in comparison with other populations inhabiting water bodies of similar surface areas. Males proved to be predominated by females - phenomenon typical of populations of this species - but at relatively high ratio of approximately 1:4. Most of females were aged 2+, whereas most of males were older (3+). These data indicate that the population remains in the early stages of development. The Lincoln-Petersen method proved useful in the studies of the size and structure of <italic>E. percnurus</italic> populations.</p></abstract>

In July and August 2010, the Lincoln-Petersen capture-recapture method was used to assess the size and basic structure of a newly established population of the endangered in Poland cyprinid fish lake minnow, Eupallasella percnurus (Pall). The population that inhabits a small (0.08 ha) peat excavation site in the village of Kowalicha near Radzymin (Mazowieckie Voivodeship, Poland) was initiated in 2004-2006 using the translocations of a total of 1530 cultivated individuals, mostly juveniles aged 0+. The total size of the E. percnurus population was estimated to be 600 individuals excluding aged 0+. The population size is not considered to be large in comparison with other populations inhabiting water bodies of similar surface areas. Males proved to be predominated by females - phenomenon typical of populations of this species - but at relatively high ratio of approximately 1:4. Most of females were aged 2+, whereas most of males were older (3+). These data indicate that the population remains in the early stages of development. The Lincoln-Petersen method proved useful in the studies of the size and structure of E. percnurus populations.

Size and structure of a new lake minnow, <italic>Eupallasella percnurus</italic> (Pall.), population established through translocations

Pond Fishery Department in Żabieniec, Inland Fisheries Institute in Olsztyn, Główna 48, Żabieniec, 05-500 Piaseczno, Poland

Fisheries & Aquatic Life

Size and structure of a new lake minnow,  (Pall.), population established through translocations

In July and August 2010, the Lincoln-Petersen capture-recapture method was used to assess the size and basic structure of a newly established population of the...

Size and structure of a new lake minnow, Eupallasella percnurus (Pall.), population established through translocations

Pubblicato online: 19 dic 2011

Pagine: 195 - 200

DOI: https://doi.org/10.2478/v10086-011-0024-5

Parole chiave
lake minnow, population size, sex structure, length distribution, age structure

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