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Bibliographic Details
Main Author:	R.A. Espinoza G.
Format:	Artículo científico
Language:	es
Published:	Universidad de Costa Rica 2008
Subjects:	Biología Venezuela Índice gonádico Golfo de Cariaco índice reproductivo Echinometra lucunter
Online Access:	https://www.redalyc.org/articulo.oa?id=44920273021
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Actividad reproductiva de los erizos Lytechinus variegatus y Echinometra lucunter (Echinodermata: Echinoidea) en relación con factores ambientales en el Golfo de Cariaco, Venezuela R.A. Espinoza G. J.L. Reyes J.H. Himmelman C. Lodeiros Biología Venezuela Índice gonádico Golfo de Cariaco índice reproductivo Echinometra lucunter Se determinó mensualmente el desarrollo de las gónadas, la relación hembra:macho, y el índice reproductivo (peso de la gónada como un porcentaje del peso total) de Lytechinus variegatus y Echinometra lucunter durante 16 meses en Turpialito, Golfo de Cariaco, Venezuela. La cobertura, en las estaciones de recolecta, por macroalgas y fanerógamas, fue determinada mensualmente, y cada semana lo fueron la temperatura, salinidad y oxígeno del agua, así como la concentración del seston. Las dos especies mostraron alta variabilidad de sus índices reproductivos, y la relación machos: hembras fue 1:1 en ambas especies. L. variegatus muestra una tendencia a elevado índice gonádico durante julio a noviembre, y un alto porcentaje de individuos en desove y desovados (fases IV, V) durante la mayor parte del año. E. lucunter no mostró un patrón definido del índice gonádico y se observaron individuos inmaduros durante todo el año. No se encontró una relación clara entre los eventos reproductivos de L. variegatus y de E. lucunter y los factores ambientales estudiados, aunque las temperaturas bajas parecen estar relacionadas con la gametogénesis, y las altas con la maduración de las gónadas en L. variegatus. 2008 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44920273021 es http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.56

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// 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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