EVALUATION OF THE RELATIONSHIP BETWEEN SURFACE AND BACKGROUND TEMPERATURE IN SITU, REGARDING CATCH PER UNIT EFFORT (CPUE) IN TRAPPING FOR WHITE SPOT SHRIMP (P. platycerus) ON THE WESTERN COAST OF BAJA CALIFORNIA, MEXICO - Atena EditoraAtena Editora

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EVALUATION OF THE RELATIONSHIP BETWEEN SURFACE AND BACKGROUND TEMPERATURE IN SITU, REGARDING CATCH PER UNIT EFFORT (CPUE) IN TRAPPING FOR WHITE SPOT SHRIMP (P. platycerus) ON THE WESTERN COAST OF BAJA CALIFORNIA, MEXICO

El presente estudio posibilita realizar predicciones de zonas potenciales de pesca y ahorrar recursos en las operaciones diarias. Aporta información técnica que relaciona la temperatura superficial y de fondo medida con Hobos y la captura por unidad de esfuerzo (CPUE). Los rendimientos de pesca con trampas obtenidos en torno a la costa occidental de Baja California están en concordancia con valores máximos y mínimos encontrados en otros lugares tanto en California como Alaska. Esto posiciona en un nivel intermedio los 0.400 kg/trampa determinados como promedio general en la captura de P. platycerus en torno a la costa occidental de la Baja California al utilizar los diseños de trampas con los cuales se obtuvieron rendimientos satisfactorios. Estos corresponden a las trampas cuadradas (0.93 kg/trampa) y a la rectangular (0.165 kg/trampa). Las mediciones de temperatura in situ promedio registradas en los lances de pesca mostraron una variación de temperatura entre los 16ºC y 5 °C. Asimismo, se observa una variación en la temperatura superficial y de fondo entre los meses julio-octubre en que se realizaron las pruebas, encontrando un incremento sostenido en 16ºC para la temperatura superficial y de 10°C para temperatura de fondo. Se ha determinado una alta disponibilidad de este recurso a partir de los 100-360 m de profundidad. Con la trampa seleccionada en la presente investigación es posible obtener capturas promedio de 0.300-0.500 gramos por trampa. Se concluye que es factible explotar este recurso en niveles importantes donde solo se captura langosta, erizo, pepino de mar y peces que constituyen la carnada de las trampas utilizadas para la extracción de este pandalus.

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EVALUATION OF THE RELATIONSHIP BETWEEN SURFACE AND BACKGROUND TEMPERATURE IN SITU, REGARDING CATCH PER UNIT EFFORT (CPUE) IN TRAPPING FOR WHITE SPOT SHRIMP (P. platycerus) ON THE WESTERN COAST OF BAJA CALIFORNIA, MEXICO

  • DOI: https://doi.org/10.22533/at.ed.813412402011

  • Palavras-chave: Fishing with traps, P. platycerus, surface temperature, bottom temperature.

  • Keywords: Fishing with traps, P. platycerus, surface temperature, bottom temperature.

  • Abstract:

    This study makes it possible to make predictions of potential fishing areas and save resources in daily operations. It provides technical information that relates the surface and bottom temperature measured with Hobos and the capture per unit of effort (CPUE). Trap fishing yields obtained around the western coast of Baja California are consistent with maximum and minimum values found elsewhere in both California and Alaska. This places at an intermediate level the 0.400 kg/trap determined as the general average in the capture of P. platycerus around the western coast of Baja California when using the trap designs with which satisfactory yields were obtained. These correspond to the square traps (0.93 kg/trap) and the rectangular trap (0.165 kg/trap). The average in situ temperature measurements recorded in the fishing hauls showed a temperature variation between 16ºC and 5 °C. Likewise, a variation is observed in the surface and bottom temperature between the months July-October in which the tests were carried out, finding a sustained increase of 16ºC for the surface temperature and 10°C for the bottom temperature. A high availability of this resource has been determined from 100-360 m depth. With the trap selected in this investigation it is possible to obtain average catches of 0.300-0.500 grams per trap. It is concluded that it is feasible to exploit this resource at significant levels where only lobster, urchin, sea cucumber and fish that constitute the bait for the traps used for the extraction of this pandalus are captured.

  • Jorge Flores Olivares
  • Alfredo Emmanuel Vázquez Olivares
  • Osiris Chávez Vargas
  • Heimy Franceline Martínez Sánchez
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