Fauna bentónica asociada a colectores artificiales en Santa Cruz, Galápagos entre 2009 y 2010.
Fecha
2018
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Facultad de Ciencias Naturales, Universidad de Guayaquil
Resumen
El estudio se realizó en Canal Itabaca y Bahía Tortuga, ambos pertenecientes a
la isla Santa Cruz, en el Archipiélago de Galápagos, el objetivo de la
investigación estuvo dirigido a caracterizar la fauna bentónica que se asentó en
colectores artificiales colocados mensualmente entre el 2009 y 2010, y la
comparación entre los sitios. Se colectó un total de 30118 individuos, los
grupos representativos fueron: Annelida, Arthropoda, Echinodermata, Mollusca,
Sipunculida, Chordata. El grupo dominante en el muestreo fueron los
gasterópodos (71%), la familia Epitoniidae fue la más representativa. Se
identificaron 180 especies, de las cuales 68 se encuentran en ambos sitios de
estudio. El índice de diversidad en el Canal Itabaca presentó valores altos en
junio (H‟= 2,80) del 2009 y julio (H‟= 2,98) del 2010; para Bahía Tortuga se
registró datos altos en enero (H‟= 2,5) del 2009 y en diciembre (H‟=3,03) del
2010. Los organismos registrados entre sitio, no muestran diferencias
significativas para el 2009 (p=0.3640) y el 2010 (p=0.3359).
The study was carried out in Itabaca Channel and Tortuga Bay, both belonging to Santa Cruz Island, in the Galapagos Islands. The aim of the study was to characterize the benthic fauna that settled in the artificial collector‟s sampling monthly during 2009 and 2010 and compare between sites. A total of 30118 individuals were collected. The representative groups were: Annelida, Arthropoda, Echinodermata, Mollusca, Sipunculida, Chordata. Of all the collections, the dominant group in the samples were the gastropods (71%), the family Epitoniidae was more representative. There are 180 species identified, of which 68 are in both sites. The index of diversity in Itabaca Channel showed high values during June 2009 (H „= 2.80) and in July 2010 (H‟ = 2.98); for Tortuga Bay, high data was registered in January 2009 (H „= 2, 5) and in December 2010 (H „= 3.03). The collected organismsbetween sitesd showed no significant differences to 2009 (p = 0.3640) and to 2010 (p = 0.3359).
The study was carried out in Itabaca Channel and Tortuga Bay, both belonging to Santa Cruz Island, in the Galapagos Islands. The aim of the study was to characterize the benthic fauna that settled in the artificial collector‟s sampling monthly during 2009 and 2010 and compare between sites. A total of 30118 individuals were collected. The representative groups were: Annelida, Arthropoda, Echinodermata, Mollusca, Sipunculida, Chordata. Of all the collections, the dominant group in the samples were the gastropods (71%), the family Epitoniidae was more representative. There are 180 species identified, of which 68 are in both sites. The index of diversity in Itabaca Channel showed high values during June 2009 (H „= 2.80) and in July 2010 (H‟ = 2.98); for Tortuga Bay, high data was registered in January 2009 (H „= 2, 5) and in December 2010 (H „= 3.03). The collected organismsbetween sitesd showed no significant differences to 2009 (p = 0.3640) and to 2010 (p = 0.3359).
Descripción
Palabras clave
COLECTOR ARTIFICIAL, ESPECIES, FAUNA BENTÓNICA