Occurrence of Sudis hyalina Rafinesque, 1810 (Paralepididae) in Büyükeceli Coast (Mersin Bay, Northeastern Mediterranean)

Abstract

In November 2018, an individual belonging to the Sudis hyalina was caught in a trawling operation in the Büyükeceli Coast (Mersin Bay, NE Mediterranean). Morphological and meristic measurements of the specimen were made and recorded with the catalogue number of MEUFC-18-11-102 in the Museum of the Systematic, Faculty of Fisheries, Mersin University.

Biological information on a rare pelagic fish, black ruff Centrolophus niger, caught in Icelandic waters: Distribution, feeding, and otoliths

“…There was no significant difference in the relationship between standard length and fork length, calculated using the data from Templeman and Haedrich (1966) and Quigley (1986) (ANCOVA, df = 1, 14, p > 0.05). The difference in standard length and fork length for the single fish from Ayas et al (2018) appeared to be consistent (based on visual inspection) with the relationships from Quigley (1986) and Templeman and Haedrich (1966) (Figure 8). The data from the current study were significantly different from the combined data from previous studies (Ayas et al, 2018;Quigley, 1986;Templeman & Haedrich, 1966) (ANCOVA, df = 1, 29, p < 0.05).…”

“…The difference in standard length and fork length for the single fish from Ayas et al (2018) appeared to be consistent (based on visual inspection) with the relationships from Quigley (1986) and Templeman and Haedrich (1966) (Figure 8). The data from the current study were significantly different from the combined data from previous studies (Ayas et al, 2018;Quigley, 1986;Templeman & Haedrich, 1966) (ANCOVA, df = 1, 29, p < 0.05). However, in practical terms, the difference was small.…”

“…It may also be that the depth they inhabit varies between years, the survey only samples the upper 35 m of the water column, and in some years (Haedrich, 1986a), and our results are in line with this in that very few large individuals had been caught during the surface trawls, which sample the upper 35 m of the water column. Some of the records of C. niger describe their specimen(s) as juvenile or adult but do not exclusively mention that they examined the gonads to determine maturity (Akyol, 2008;Ayas et al, 2018;Čoli c et al, 2020). The gonads were examined for one specimen in Mackay (1972).…”

“…Therefore, their oceanic distribution is not well known, but two specimens were caught during the Dana expeditions in open water close to the mid‐Atlantic ridge (Templeman & Haedrich, 1966). It appears to be present across the Mediterranean Sea and its marginal seas based on multiple records (Ayas et al, 2018; Ben Amor et al, 2018; Capapé et al, 2017; Cengiz et al, 2019; Ceyhan & Akyol, 2011; Čolić et al, 2020; Farrag, 2016). In addition, there are reports of it being caught in Madeira, Spain, and there are multiple records from along the coast of Ireland and other countries in Europe (Fernández & Fariña, 1985; Fowler, 1936; Templeman & Haedrich, 1966; Went, 1963, 1966, 1968, 1969, 1971).…”

“…Therefore, their oceanic distribution is not well known, but two specimens were caught during the Dana expeditions in open water close to the mid-Atlantic ridge (Templeman & Haedrich, 1966). It appears to be present across the Mediterranean Sea and its marginal seas based on multiple records (Ayas et al, 2018;Ben Amor et al, 2018;Capapé et al, 2017;Cengiz et al, 2019;Ceyhan & Akyol, 2011;Čoli c et al, 2020;Farrag, 2016).…”