The establishment of the non-indigenous cyclopoid copepod Oithona davisae in Hamsilos Bay-Sinop, Southern Black Sea, Turkey

Funda Üstün; Tuba Terbiyik Kurt; Zeynep Hasançavuşoğlu

Makale detayları

The establishment of the non-indigenous cyclopoid copepod Oithona davisae in Hamsilos Bay-Sinop, Southern Black Sea, Turkey

Yazarlar:

Funda Üstün | Tuba Terbiyik Kurt | Zeynep Hasançavuşoğlu

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.39 Issue 2, pp.64-71

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001317156

pISSN:

2602-473X

Anahtar kelimeler:

Özet:

 Hamsilos Bay, which is located within the firstdegree natural protection area, is one of the most important regions on the southern Black Sea coast. Moreover, many fish species utilize this area for breeding and rearing activities. Small copepod Oithona davisae has been encountered in the Black Sea for two decades and spread rapidly the overall Black Sea, and become an important component in the pelagic ecosystem of the Black Sea. In this respect, the present study aims to characterize the distribution and abundance of Oithona davisae in Hamsilos Bay about environmental variables. Zooplankton samples were collected monthly from seven stations from July 2015 to June 2016 by using a plankton net with a mesh size of 112 μm and a diameter mouth opening of 50 cm. O. davisae was observed during the whole sampling period and was the dominant species from July 2015 to December 2015. The highest mean abundance of this species was recorded in September 2015 3533.33 ind. m3. However, the lowest mean abundance was observed between January 2016 170.68 ind. m3 and May 2016 0.24 ind. m3. Copepodites 54 were predominant in the O. davisae population in all months and all stations. Adult copepods and their copepodites 54 were more abundant between July 2015 and December 2015, whereas the abundance of copepodites 31 was maximum between September 2015 and December 2015. The abundance of O. davisae was highly correlated with chlorophyll-α and physiochemical variables temperature, dissolved oxygen, and salinity. In conclusion, this species, which is known to be distributed only in the autumn conditions in close areas, extended its temporal distribution and prevailed in the copepod communities during warmer periods. This could be attributed to the acclimatization success of this species in Hamsilos Bay ecosystems.

 Hamsilos Bay, which is located within the firstdegree natural protection area, is one of the most important regions on the southern Black Sea coast. Moreover, many fish species utilize this area for breeding and rearing activities. Small copepod Oithona davisae has been encountered in the Black Sea for two decades and spread rapidly the overall Black Sea, and become an important component in the pelagic ecosystem of the Black Sea. In this respect, the present study aims to characterize the distribution and abundance of Oithona davisae in Hamsilos Bay about environmental variables. Zooplankton samples were collected monthly from seven stations from July 2015 to June 2016 by using a plankton net with a mesh size of 112 μm and a diameter mouth opening of 50 cm. O. davisae was observed during the whole sampling period and was the dominant species from July 2015 to December 2015. The highest mean abundance of this species was recorded in September 2015 3533.33 ind. m3. However, the lowest mean abundance was observed between January 2016 170.68 ind. m3 and May 2016 0.24 ind. m3. Copepodites 54 were predominant in the O. davisae population in all months and all stations. Adult copepods and their copepodites 54 were more abundant between July 2015 and December 2015, whereas the abundance of copepodites 31 was maximum between September 2015 and December 2015. The abundance of O. davisae was highly correlated with chlorophyll-α and physiochemical variables temperature, dissolved oxygen, and salinity. In conclusion, this species, which is known to be distributed only in the autumn conditions in close areas, extended its temporal distribution and prevailed in the copepod communities during warmer periods. This could be attributed to the acclimatization success of this species in Hamsilos Bay ecosystems.

 Hamsilos Bay, which is located within the firstdegree natural protection area, is one of the most important regions on the southern Black Sea coast. Moreover, many fish species utilize this area for breeding and rearing activities. Small copepod Oithona davisae has been encountered in the Black Sea for two decades and spread rapidly the overall Black Sea, and become an important component in the pelagic ecosystem of the Black Sea. In this respect, the present study aims to characterize the distribution and abundance of Oithona davisae in Hamsilos Bay about environmental variables. Zooplankton samples were collected monthly from seven stations from July 2015 to June 2016 by using a plankton net with a mesh size of 112 μm and a diameter mouth opening of 50 cm. O. davisae was observed during the whole sampling period and was the dominant species from July 2015 to December 2015. The highest mean abundance of this species was recorded in September 2015 3533.33 ind. m3. However, the lowest mean abundance was observed between January 2016 170.68 ind. m3 and May 2016 0.24 ind. m3. Copepodites 54 were predominant in the O. davisae population in all months and all stations. Adult copepods and their copepodites 54 were more abundant between July 2015 and December 2015, whereas the abundance of copepodites 31 was maximum between September 2015 and December 2015. The abundance of O. davisae was highly correlated with chlorophyll-α and physiochemical variables temperature, dissolved oxygen, and salinity. In conclusion, this species, which is known to be distributed only in the autumn conditions in close areas, extended its temporal distribution and prevailed in the copepod communities during warmer periods. This could be attributed to the acclimatization success of this species in Hamsilos Bay ecosystems.

 Hamsilos Bay, which is located within the firstdegree natural protection area, is one of the most important regions on the southern Black Sea coast. Moreover, many fish species utilize this area for breeding and rearing activities. Small copepod Oithona davisae has been encountered in the Black Sea for two decades and spread rapidly the overall Black Sea, and become an important component in the pelagic ecosystem of the Black Sea. In this respect, the present study aims to characterize the distribution and abundance of Oithona davisae in Hamsilos Bay about environmental variables. Zooplankton samples were collected monthly from seven stations from July 2015 to June 2016 by using a plankton net with a mesh size of 112 μm and a diameter mouth opening of 50 cm. O. davisae was observed during the whole sampling period and was the dominant species from July 2015 to December 2015. The highest mean abundance of this species was recorded in September 2015 3533.33 ind. m3. However, the lowest mean abundance was observed between January 2016 170.68 ind. m3 and May 2016 0.24 ind. m3. Copepodites 54 were predominant in the O. davisae population in all months and all stations. Adult copepods and their copepodites 54 were more abundant between July 2015 and December 2015, whereas the abundance of copepodites 31 was maximum between September 2015 and December 2015. The abundance of O. davisae was highly correlated with chlorophyll-α and physiochemical variables temperature, dissolved oxygen, and salinity. In conclusion, this species, which is known to be distributed only in the autumn conditions in close areas, extended its temporal distribution and prevailed in the copepod communities during warmer periods. This could be attributed to the acclimatization success of this species in Hamsilos Bay ecosystems.

Makale detayları

The establishment of the non-indigenous cyclopoid copepod Oithona davisae in Hamsilos Bay-Sinop, Southern Black Sea, Turkey

Yazarlar:

Funda Üstün | Tuba Terbiyik Kurt | Zeynep Hasançavuşoğlu

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.39 Issue 2, pp.64-71

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001317156

pISSN:

2602-473X

Oithona davisae

non-native

invasive species

abundance

developmental stages

physiochemical variables

Sayı

Makale detayları

The establishment of the non-indigenous cyclopoid copepod Oithona davisae in Hamsilos Bay-Sinop, Southern Black Sea, Turkey

Yazarlar: Funda Üstün | Tuba Terbiyik Kurt | Zeynep Hasançavuşoğlu

Yayıncı: Istanbul University

Ana Başlıklar: Hydrobiology

Dergi: Aquatic Sciences and Engineering Vol.39 Issue 2, pp.64-71

Belge Tipi: Makale

Yayın Tarihi: 3/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001317156

pISSN: 2602-473X

Oithona davisae

non-native

invasive species

abundance

developmental stages

physiochemical variables

Sayı

Yazarlar:

Funda Üstün | Tuba Terbiyik Kurt | Zeynep Hasançavuşoğlu

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.39 Issue 2, pp.64-71

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001317156

pISSN:

2602-473X