The Relationship of Bristle Worm, Protodorvillea kefersteini (McIntosh, 1869) (Eunicida, Dorvilleidae) Abundance with Environmental Variables in Çardak Lagoon (Turkish Straits) Exposed to domestic Discharge

This study presents the correlations between opportunistic polychatea, Protodorvillea kefersteini (McIntosh, 1869) abundance, and environmental variables in Çardak Lagoon. Samplings were carried out on the bottoms using a 30x30 cm quadrate seasonally between 1 and 1.8 m depths of seven sampling points in October 2018, February, April, and June 2019. A total of 1094 specimens belonging to P. kefersteini were collected. Environmental variables such as gravel content in sediment, pH, and salinity levels in the water had the highest correlations with the abundance through the sampling periods. Considering the sampling points, the highest correlation value was between water salinity and the abundance. Sediment gravel content, pH, salinity, temperature, anionic surfactant levels, and NO2+NO3 were major environmental variables affecting P. kefersteini abundance in the study area spatially and temporally

Decapod curustaceans on the coast of Gökova Bay (The Southeastern Aegean Sea)

The present study is on decapod crustaceans found on the coast of G;ouml;kova Bay (the southeastern Aegean Sea). A total of 358 specimens belong to 51 species (17 carideans, 11 anomurans, 1 thalassinid, and 22 brachyurans) was collected during experimental benthos samplings in the area. The brachyuran crabs was dominant component of decapod assemblage in the area by a total of 22 species and an occurrence frequency of 43,13%. The caridean shrimp, Lysmata seticaudata (Risso, 1816) was most dominant species by dominance value of 19,83%.Gökova Körfezi (güneydoğu Ege Denizi) kıyıları dekapod krustaseleri. Mevcut çalışma Gökova Körfezi (güneydoğu Ege Denizi) kıyılarında bulunan dekapod krustaseler üzerinedir. Alandaki deneysel bentoz örneklemeleri sırasında toplam 51 türe (17 Caridea, 11 Anomura, 1 Thalassinidea, ve 22 Brachyura) ait 358 birey toplanmıştır. Brachyuran yengeçler toplam 22 tür ve %43,13’lük oluşum frekansıyla alandaki dekapod topluluğunun baskın parçasıydı. Caridean karides, Lysmata seticaudata (Risso, 1816) %19,83’lük baskınlık değeriyle en dominant türdü

The response of apseudopsis latreillii (Milne-Edwards, 1828) (crustacea, tanaidacea) to environmental variables in the dardanelles [Çanakkale bogazi{dotless}'ndaki çevresel degişkenlere apseudopsis latreillii (Milne- Edwards, 1828) (crustacea, tanaidacea)'nin tepkisi]

The tanaid, Apseudopsis latreilli (Milne- Edwards, 1828) is a common crustacean species on the soft bottoms of the Mediterranean ecosystems and occurs in both clean and polluted environments. This study was aimed to determine the sensitive state of tanaid, A. latreillii to the environmental variables observed on the soft bottoms of the Dardanelles. A. latreillei abundance at the sites was analysed in comparision with the organic matter content in sediment and the environmental variables in the study area. A total of 1406 specimens of A. latreillii was recorded during the study. The highest dominance value (Di=30.37%) was for Kepez Harbour where the amount of organic matter was 25.50±12.09% in the sediment. The highest value of dominance according to the sampling seasons was 56.75% for Autumn 2008 (organic matter=21.7±7.99%). The highest sand rate (99.59%) in the sediment was found at the Eceabat sampling point. The highest positive correlation (r=0.349, P<0.05) was observed between gravel content (%) measured at the sites and total abundance (ind.0.09 m-2). © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey