Relationships between Otolith Size and Body Size for Hawaiian Reef Fishes¹

Relations between fish length to weight, and otolith length and weight, of the lionfish Pterois volitans in the Parque Nacional Arrecife Alacranes, southern Gulf of Mexico

“…Otoliths are used in stomach content studies because they are among the species-specific features last to be digested by piscivorous predators (e.g., fish, sea birds, marine mammals); thus, otoliths can be used as a tool for reconstructing predator diet and estimating the size of preyed fish (e.g., Granadeiro & Silva 2000, Harvey et al 2000, Longenecker 2008, Kasapoglu & Duzgunes, 2013, Lalas et al 2014, Zan et al 2015. Overall, the relations described in this work for lionfish in the PNAA can provide baseline data to detect lionfish presence and calculate its size based on otoliths found in stomachs of potential fish predators (i.e., groupers, snappers, jacks).…”

Relationships between fish length and otolith size for five cyprinid speciesfrom Lake Ladik, Samsun, Turkey

“…In studies on the relationship between otolith and fish size, the otolith length was usually used (Echeverria, 1987;Gamboa, 1991;Şahin and Güneş, 1998;Harvey et al, 2000;Şen et al, 2001;Aydin et al, 2004;Uçkun et al, 2006;Longenecker, 2008;Cengiz et al, 2012;Felix et al, 2013). This paper supplies additional information by considering both the otolith length (OL) and width (OW).…”

“…However, useful information can only be obtained from the otoliths if the relationship between otolith size and fish size is generated (Morley and Belchier, 2002;Longenecker, 2008). Otolith biometry-body length relationships have been determined for many fish species by different investigators (Gamboa, 1991;Harvey et al, 2000;Waessle et al, 2003;Longenecker, 2008;Battaglia et al, 2010;Zorica et al, 2010;Potier et al, 2011;Skeljo and Ferri, 2012).…”

“…However, useful information can only be obtained from the otoliths if the relationship between otolith size and fish size is generated (Morley and Belchier, 2002;Longenecker, 2008). Otolith biometry-body length relationships have been determined for many fish species by different investigators (Gamboa, 1991;Harvey et al, 2000;Waessle et al, 2003;Longenecker, 2008;Battaglia et al, 2010;Zorica et al, 2010;Potier et al, 2011;Skeljo and Ferri, 2012). In Turkey, although a number of studies have been reported on relationships between otolith size and fish length (Şahin and Güneş, 1998;Can, 2000;Ceyhan and Akyol, 2006;Samsun and Samsun, 2006;Bostancı and Polat, 2008;Eroğlu and Şen, 2009;Bostancı et al, 2009;Bostancı et al, 2012;Cengiz et al, 2012;Basusta et al, 2013;Bilge, 2013;İşmen et al, 2013), such information is still lacking for many members of the ichthyofauna.…”

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“…The relationships between fish length and weight and otolith length for the 14 species were calculated using least squares regression equations to predict the standard length and weight of the original fish from otolith lengths (e.g. Longenecker 2008). Linear regressions were fitted to the data to describe the relationships between otolith length and fish standard length (SL = a + b × OL) and non-linear (exponential) regressions were fitted to determine the relationships between otolith length and fish weight (Wt = a × OL b ), where the term "a" is the intercept of the regression curves and "b" is the regression coefficient (slope).…”