Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters
8 pages, 7 figures, 2 tables
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| Language: | English |
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CSIC - Instituto de Ciencias del Mar (ICM)
2010-12
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| Subjects: | Ecology, Morphometry, Otolith, Aphanopus carbo, Aphanopus intermedius, Teleosts, Ecología, Morfometría, Otolito, Teleósteos, |
| Online Access: | http://hdl.handle.net/10261/28900 |
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dig-icm-es-10261-289002020-11-24T08:47:59Z Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters Uso del otolito sagitta y el diámetro del ojo para la caracterización ecológica de peces de profundidad: Aphanopus carbo and A. Intermedius del Atlántico nororiental Tuset, Víctor M. Piretti, Silvia Lombarte, Antoni González, José A. Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos 8 pages, 7 figures, 2 tables [EN] The sagittal otolith and eye diameter of two sympatric species of the genus Aphanopus, A. carbo and A. intermedius, from North Atlantic waters were investigated. The study objectives were to find morphometric variables of otoliths to identify the two species and relate ecomorphological characters of otolith and eye diameter to the depth distribution of each species. The otoliths of the two species are very similar, although significant differences in shape, otolith height and weight and the sulcus acusticus area were detected. The ratio between eye diameter and cephalic length (ED:CL ratio) was also significantly different. In both analyses A. carbo obtained higher values, which suggests that A. carbo and A. intermedius live in different spatial niches, and that A. carbo inhabits deeper waters. The ratio between the sulcus and otolith areas (S:O) was low compared to other fish species, which suggests that the hearing capacity of Aphanopus spp. is adapted to low frequency sound. This adaptation may be related to the oceanographic conditions in which these species live, and in particular to the characteristics of sound transmission in the “SOFAR channel” [ES] El otolito sagitta y el diámetro del ojo de dos especies simpátricas del género Aphanopus, A. carbo y A. intermedius, del Atlántico Norte fueron analizados. Los objetivos del estudio se centraron en encontrar las variables morfométricas del otolito que pudiesen ser empleadas en la diferenciación de ambas especies y en establecer una correspondencia entre la profundidad de distribución de las especies y las características ecomorfológicas del otolito y del diámetro del ojo. Los otolitos de ambas especies resultaron ser parecidos, si bien se detectaron diferencias significativas en la forma, en el peso y la anchura del otolito y en el área del sulcus acusticus. La proporción entre el diámetro del ojo y la longitud cefálica (ED:CL) también puso de manifiesto diferencias significativas entre ambas especies. En ambos análisis, los resultados indicaron que A. carbo alcanza valores mayores. Ello proporciona evidencias para poder afirmar que A. carbo y A. intermedius viven en nichos espaciales diferentes, habitando A. carbo aguas más profundas. La proporción entre al área del sulcus y el área del otolito (S:O) alcanzó valores bajos en comparación con otras especies, lo cual sugiere que la capacidad auditiva de Aphanopus spp. está adaptada a sonidos de baja frecuencia. Dicha adaptación podría estar relacionada con las condiciones oceanográficas donde viven estas especies y, en particular, con las características de la transmisión del sonido dentro del denominado “canal SOFAR” This study was co-funded by the research project PESCPROF 3 (ref: 05/MAC/4.2/M11 and co-financed by EU Interreg III-B programme), and pursued in collaboration with the pilot projects RAI-AP 36/2005 and 37/2005 co-financed by the EU and the Spanish Government Peer reviewed 2010-11-04T10:47:06Z 2010-11-04T10:47:06Z 2010-12 artículo http://purl.org/coar/resource_type/c_6501 Scientia Marina 74(4): 807-814 (2010) 0214-8358 http://hdl.handle.net/10261/28900 10.3989/scimar.2010.74n4807 1886-8134 en https://doi.org/10.3989/scimar.2010.74n4807 open CSIC - Instituto de Ciencias del Mar (ICM) |
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| topic |
Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos |
| spellingShingle |
Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos Tuset, Víctor M. Piretti, Silvia Lombarte, Antoni González, José A. Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| description |
8 pages, 7 figures, 2 tables |
| format |
artículo |
| topic_facet |
Ecology Morphometry Otolith Aphanopus carbo Aphanopus intermedius Teleosts Ecología Morfometría Otolito Teleósteos |
| author |
Tuset, Víctor M. Piretti, Silvia Lombarte, Antoni González, José A. |
| author_facet |
Tuset, Víctor M. Piretti, Silvia Lombarte, Antoni González, José A. |
| author_sort |
Tuset, Víctor M. |
| title |
Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| title_short |
Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| title_full |
Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| title_fullStr |
Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| title_full_unstemmed |
Using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: Aphanopus carbo and A. intermedius from NE Atlantic waters |
| title_sort |
using sagittal otoliths and eye diameter for ecological characterization of deep-sea fish: aphanopus carbo and a. intermedius from ne atlantic waters |
| publisher |
CSIC - Instituto de Ciencias del Mar (ICM) |
| publishDate |
2010-12 |
| url |
http://hdl.handle.net/10261/28900 |
| work_keys_str_mv |
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| _version_ |
1777665776639016960 |