“…Mammals, another vertebrate group, are also exposed to significant levels of OCP pollutants (Mason and O'sullivan, 1992;Harding, 1999;D'Have, 2006;Arıkan et al, 2018b). Other researchers have also reported that OCP residues, in particular DDTs, cause the most concerns, which include the problems of reproductive failure and declining breeding success (Arıkan and Turan, 2020;Scharenberg and Looft, 2004;Toschik et al, 2005;Corsolini et al, 2006;Hernández et al, 2008). Studies related to OCP residues in the keratinous tissue of mammals (Arıkan et al, 2018b), birds (Arıkan et al, 2018a;Arıkan and Turan, 2020;Arıkan et al, 2017;Ayaş et al, 1997), and fish (Coelhan et al, 2006) in Turkey show that DDTs are at the highest levels when compared with other congeners.…”