CONICET | Buscador de Institutos y Recursos Humanos

Morphology and morphometry of the sagittae otolith were studied in pelagic and mesopelagic Wsh. The shape, margins and rostrum of four groups of otoliths from several species were analyzed: group 1 (pelagic Wsh associated with the under ice cover N = 42), group 2 (pelagic Wsh associated with water oVshore N = 9), group 3 (mesopelagicWsh. The shape, margins and rostrum of four groups of otoliths from several species were analyzed: group 1 (pelagic Wsh associated with the under ice cover N = 42), group 2 (pelagic Wsh associated with water oVshore N = 9), group 3 (mesopelagicWsh associated with the under ice cover N = 42), group 2 (pelagic Wsh associated with water oVshore N = 9), group 3 (mesopelagicN = 42), group 2 (pelagic Wsh associated with water oVshore N = 9), group 3 (mesopelagicVshore N = 9), group 3 (mesopelagic Wsh associated with extensive vertical migrationsh associated with extensive vertical migration N = 57) and group 4 (mesopelagic Wsh associated with short vertical migration N = 54). E (maximum width of the sagitta /maximum length of the sagitta %), R (rostrum length (RL)/maximum length of the sagitta %) and S (sulcus area (SS)/otolith area (OS) %) indexes were calculated for each species. Sagittae of pelagic groups (1 and 2) showed the smallest sagitta dimensions in relation to the total length of the Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.= 57) and group 4 (mesopelagic Wsh associated with short vertical migration N = 54). E (maximum width of the sagitta /maximum length of the sagitta %), R (rostrum length (RL)/maximum length of the sagitta %) and S (sulcus area (SS)/otolith area (OS) %) indexes were calculated for each species. Sagittae of pelagic groups (1 and 2) showed the smallest sagitta dimensions in relation to the total length of the Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.N = 54). E (maximum width of the sagitta /maximum length of the sagitta %), R (rostrum length (RL)/maximum length of the sagitta %) and S (sulcus area (SS)/otolith area (OS) %) indexes were calculated for each species. Sagittae of pelagic groups (1 and 2) showed the smallest sagitta dimensions in relation to the total length of the Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.R (rostrum length (RL)/maximum length of the sagitta %) and S (sulcus area (SS)/otolith area (OS) %) indexes were calculated for each species. Sagittae of pelagic groups (1 and 2) showed the smallest sagitta dimensions in relation to the total length of the Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.S (sulcus area (SS)/otolith area (OS) %) indexes were calculated for each species. Sagittae of pelagic groups (1 and 2) showed the smallest sagitta dimensions in relation to the total length of the Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.Wsh, in this group the sagitta shape is variable. Sagittae of mesopelagic Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.Wsh (groups 3 and 4) showed variable shape and edges. The shape in group 4 was polygonal and these species have more width than length. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.. Statistical analysis showed signiWcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature.Wcant diVerences in the E, R and S indexes. These results were compared with other 19 species, belonging to six families, taken from a publisher-edited literature. E, R and S-values could be used to characterize the sagittae of the Antarctic Wsh and could be considered as a useful tool for Wsh ecology studies., R and S-values could be used to characterize the sagittae of the Antarctic Wsh and could be considered as a useful tool for Wsh ecology studies.Wsh and could be considered as a useful tool for Wsh ecology studies.Wsh ecology studies.

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