AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis)

Mehmet Güler [1] , Deniz Çoban [2] , Birsen Kırım [3]

31 71

The river nerite (Theodoxus fluviatilis, Linnaeus, 1758) is one of the most common gastropod grazer species in Europe inland and brackish waters. Its feeding activity significantly impacts on periphyton which has a decisive role on the water parameters and the population dynamics. In the present study, reproductive outputs and larval phases of the river nerites were examined via field collected and laboratory cultivated samplings. The length of capsules laid by adults was between 0.7 and 1.1 mm. Viable embryos were detected first on the 33rd day post-spawning. After few development phases embryo reached a ready-to-hatch phase with completely developed foot and pigmented protoconch before hatching. There was never more than one embryo per capsule. The earliest hatching was observed on the 53rd day of spawning. But most of the embryos did not hatch even they were fully developed. The shell length of the hatchlings was about 0.8 and the width was 0.6 mm. It was estimated that the length of a newly hatched crawling juvenile can be about 1/7 of the length of an adult.

Gastropod,Neritidae,Egg capsule,Embryonic development
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Konular Denizcilik, Sucul Bilimler ve Su Ürünleri
Dergi Bölümü Makaleler
Yazarlar

Orcid: 0000-0001-8257-1138
Yazar: Mehmet Güler (Sorumlu Yazar)
E-posta: mehmetguler@adu.edu.tr
Kurum: Adnan Menderes University, Faculty of Agriculture, Department of Aquaculture and Fisheries, Aydın
Ülke: Turkey


Orcid: 0000-0001-7058-3123
Yazar: Deniz Çoban
E-posta: deniz.coban@adu.edu.tr
Kurum: Adnan Menderes University, Faculty of Agriculture, Department of Aquaculture and Fisheries, Aydın

Orcid: 0000-0003-3292-1368
Yazar: Birsen Kırım
E-posta: birkirim@hotmail.com
Kurum: Adnan Menderes University, Faculty of Agriculture, Department of Aquaculture and Fisheries, Aydın

Bibtex @araştırma makalesi { jaefr334635, journal = {Journal of Aquaculture Engineering and Fisheries Research}, issn = {}, address = {Özkan ÖZDEN}, year = {}, volume = {4}, pages = {46 - 54}, doi = {}, title = {AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis)}, key = {cite}, author = {Güler, Mehmet and Çoban, Deniz and Kırım, Birsen} }
APA Güler, M , Çoban, D , Kırım, B . (). AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis). Journal of Aquaculture Engineering and Fisheries Research, 4 (1), 46-54. Retrieved from http://jaefr.scientificwebjournals.com/issue/33185/334635
MLA Güler, M , Çoban, D , Kırım, B . "AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis)". Journal of Aquaculture Engineering and Fisheries Research 4 (): 46-54 <http://jaefr.scientificwebjournals.com/issue/33185/334635>
Chicago Güler, M , Çoban, D , Kırım, B . "AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis)". Journal of Aquaculture Engineering and Fisheries Research 4 (): 46-54
RIS TY - JOUR T1 - AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis) AU - Mehmet Güler , Deniz Çoban , Birsen Kırım Y1 - 2018 PY - 2018 N1 - DO - T2 - Journal of Aquaculture Engineering and Fisheries Research JF - Journal JO - JOR SP - 46 EP - 54 VL - 4 IS - 1 SN - -2149-0236 M3 - UR - Y2 - 2017 ER -
EndNote %0 Journal of Aquaculture Engineering and Fisheries Research AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis) %A Mehmet Güler , Deniz Çoban , Birsen Kırım %T AN OBSERVATION ON INTRACAPSULAR AND POST-EMBRYONIC PHASES OF RIVER NERITE (Theodoxus fluviatilis) %D 2018 %J Journal of Aquaculture Engineering and Fisheries Research %P -2149-0236 %V 4 %N 1 %R %U