| 000 | 02506nab a2200337 a 4500 | ||
|---|---|---|---|
| 003 | AR-ReUNN | ||
| 005 | 20260702003054.0 | ||
| 008 | 260630s2006 ag |||||||||||||||||eng | ||
| 041 | 0 | _aeng | |
| 100 | 1 |
_aAraya, Patricia Raquel _9144681 |
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| 700 | 1 |
_aAgostinho, Angelo Antonio _9134417 |
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| 700 | 1 |
_aBechara, José Alfredo _96469 |
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| 245 | 1 | 4 | _aThe influence of dam construction on a population of Leporinus obtusidens - Valenciennes, 1847 - - Pisces, Anostomidae - in the Yaciretá Reservoir - Argentina - / Patricia Raquel Araya, Angelo A. Agostinha, José Alfredo Bechara |
| 264 | 1 | _c2006 | |
| 300 | _a12 páginas | ||
| 500 | _aDisponible ejemplar 1 en caja 16 no 15, ejemplar 2 en caja 26 no 5, ejemplar 3 en caja 26 no 9 de INICNE | ||
| 520 | _aA field study of age, growth and mortality of the "boga", Leporinus obtusidens (Valenciennes, 1847) was carried out in the Yacyretá Reservoir, High Paraná River, Argentina. We compared age-structure, length-weight relationship and condition factor coefficients in phases previous (1990-1994) and subsequent (1995-1998) to the reservoir filling. In addition, we estimated total and natural mortality, as well as the growth and yield parameters for the whole study period. Comparisons were carried out in of total mesh opening (opposed knots). A scale study showed an age range comprised between 1 and 13 years, with ages 4 and 5 the most abundant before reservoir filling, whereas ages 2 and 3 were more frequent agterward. The weight-standard length the spawning period (August and September), being higher after the impoundment, and particularly in the sampling site located within the reservoir. The von Bertalanffy growth coefficient, K, reached 0.12 in both sexes, while the asymptotic length, Loo, was 578 and 547 mm, in femles and males, respectively. Natural mortality according to Pauly`s equation reached 0.178 year maximum sustainable yield of 248.00 g. The Beverton and Holt yield per recruitment (Y/R) was estimated as 246.54 g, whith a fished near its maximum capacity in the reserved. | ||
| 650 | 4 |
_aIctiología _99239 |
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| 650 | 4 |
_aIchthyology _9119207 |
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| 650 | 4 |
_aPeces de Agua Dulce _96471 |
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| 650 | 4 |
_aFreshwater Fish _9117439 |
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| 650 | 4 |
_aInland Waters _9117440 |
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| 650 | 4 |
_aArgentina _94258 |
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| 650 | 4 |
_aLeporinus Obtusidens _9119208 |
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| 650 | 4 |
_aBoga _9119194 |
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| 650 | 4 |
_aYacyreta _97064 |
|
| 773 | 0 |
_tFisheries Research _gv. 74 (2005) _w234605 |
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| 942 | _cART | ||
| 035 | _a(INICN)33986 | ||
| 001 | 234606 | ||
| 999 |
_c234606 _d234606 |
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| 040 |
_aAR-ReUNN _bspa _cAR-ReUNN _eaacr2 |
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