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Autore principale:	Adrián Vera Arabe
Natura:	Artículo científico
Lingua:	es
Pubblicazione:	Universidad Nacional Agraria La Molina 2013
Soggetti:	Estudios Ambientales dieta río Pisco selectividad estrategia alimentaria Trichomycterus punctulatus
Accesso online:	https://www.redalyc.org/articulo.oa?id=34129468007
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HÁBITOS ALIMENTARIOS DEL BAGRE “LIFE” Trichomycterus punctulatus (VALENCIENNES, 1846) (ACTINOPTERYGII, SILURIFORMES) EN EL RÍO PISCO, PERÚ Adrián Vera Arabe Eduardo Oyague Passuni Liz Castañeda Córdova Zulema Quinteros Carlos Estudios Ambientales dieta río Pisco selectividad estrategia alimentaria Trichomycterus punctulatus Trichomycterus punctulatus es un bagre de agua dulce de hábitos bentopelágicos, endémico de los ríos de la vertiente occidental del territorio peruano. Se trata de un depredador situado en la cima de la cadena trófica y como tal, podría constituir un buen integrador de la información ecológica, por lo que generar información sobre esta especie contribuiría con un mejor entendimiento del ensamblaje comunitario, además de propiciar su conservación y manejo. Los hábitos alimentarios de T. punctulatus se determinaron analizando el contenido estomacal de 127 individuos colectados durante dos estaciones del año: seca (Agosto, 2010) y húmeda (Mayo, 2011), en 3 sectores (6 estaciones de muestreo) de la cuenca media del río Pisco. Los ítems alimenticios, fueron identificados a nivel de familia. En base a estos datos se calcularon el Índice de Importancia Relativa (IRI) y el Índice de Importancia Numérica (INI), encontrándose que T. punctulatus consume principalmente individuos de las familias Chironomidae, Hydropsychidae y Leptohyphidae durante la temporada seca; mientras que en la temporada húmeda, consume individuos de las familias Chironomidae y Elmidae. Mediante el índice lineal de selección de alimentos (L), se determinó que T. punctulatus no presenta una selección activa, siendo más bien oportunista. Con el desarrollo del método gráfico de Cortés (1997), se determinó que la estrategia alimentaria de T. punctulatus es generalista. Por último con un análisis de Kruskal-Wallis se determinó que existe variación en los hábitos alimentarios por sector de cuenca y, entre las temporadas seca y húmeda. 2013 artículo científico 1726-2216 https://www.redalyc.org/articulo.oa?id=34129468007 es http://www.redalyc.org/revista.oa?id=341 Ecología Aplicada application/pdf Universidad Nacional Agraria La Molina Ecología Aplicada (Perú) Num.2 Vol.12

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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