Reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa (Holothuroidea: Aspidochirotida) in Pagasitikos Gulf, western Aegean Sea, Greece

Georgios KAZANIDIS; Alexios LOLAS; Dimitris VAFIDIS

doi:https://doi.org/10.3906/zoo-1302-31

Makale detayları

Reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa (Holothuroidea: Aspidochirotida) in Pagasitikos Gulf, western Aegean Sea, Greece

Yazarlar:

Georgios KAZANIDIS | Alexios LOLAS | Dimitris VAFIDIS

Yayıncı:

TUBITAK

Ana Başlıklar:

Zooloji bilimleri/Hayvanlar

Dergi:

Turkish Journal of Zoology 2014 Vol.38 Issue 3, pp.306-315

Belge Tipi:

Makale

Yayın Tarihi:

5/2014

Belge Dili:

İngilizce

Document ID (Org No.):

2000775617

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179

DOI:

https://doi.org/10.3906/zoo-1302-31

Anahtar kelimeler:

Özet:

 

The reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa was investigated in the Pagasitikos Gulf (39°18'457\"N, 23°05'869\"E) from June 2007 to July 2008. The study examined the microscopic characteristics of the gonads and was based on maturity index (MI) and oocytes' size-frequency distribution. The reproductive cycle was found to be synchronous between sexes, following an annual pattern. The minimum MI values were recorded in December and January, marking the onset of the reproductive cycle. During the spring, MI increased due to gamete development and proliferation. Mature specimens were prominent in summer while spawning occurred between July and September. The maximum MI values were recorded in mid-autumn, when most specimens were at the postspawning stage. The oocytes' size-frequency distribution showed analogous seasonal variability. The present findings are crucial for establishing an efficient management strategy for this commercial and ecosystem-engineering species, since its exploitation in Greek waters has not been under official control for more than a century. The authors propose a seasonal ban on the exploitation of the species from July to September and a minimum individual drained weight limit of 250 g.

 

The reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa was investigated in the Pagasitikos Gulf (39°18'457\"N, 23°05'869\"E) from June 2007 to July 2008. The study examined the microscopic characteristics of the gonads and was based on maturity index (MI) and oocytes' size-frequency distribution. The reproductive cycle was found to be synchronous between sexes, following an annual pattern. The minimum MI values were recorded in December and January, marking the onset of the reproductive cycle. During the spring, MI increased due to gamete development and proliferation. Mature specimens were prominent in summer while spawning occurred between July and September. The maximum MI values were recorded in mid-autumn, when most specimens were at the postspawning stage. The oocytes' size-frequency distribution showed analogous seasonal variability. The present findings are crucial for establishing an efficient management strategy for this commercial and ecosystem-engineering species, since its exploitation in Greek waters has not been under official control for more than a century. The authors propose a seasonal ban on the exploitation of the species from July to September and a minimum individual drained weight limit of 250 g.

Makale detayları

Reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa (Holothuroidea: Aspidochirotida) in Pagasitikos Gulf, western Aegean Sea, Greece

Yazarlar:

Georgios KAZANIDIS | Alexios LOLAS | Dimitris VAFIDIS

Yayıncı:

TUBITAK

Ana Başlıklar:

Zooloji bilimleri/Hayvanlar

Dergi:

Turkish Journal of Zoology 2014 Vol.38 Issue 3, pp.306-315

Belge Tipi:

Makale

Yayın Tarihi:

5/2014

Belge Dili:

İngilizce

Document ID (Org No.):

2000775617

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179

DOI:

https://doi.org/10.3906/zoo-1302-31

Key words: Histology

maturity index

gametogenesis

spawning

eastern Mediterranean

Sayı

Makale detayları

Reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa (Holothuroidea: Aspidochirotida) in Pagasitikos Gulf, western Aegean Sea, Greece

Yazarlar: Georgios KAZANIDIS | Alexios LOLAS | Dimitris VAFIDIS

Yayıncı: TUBITAK

Ana Başlıklar: Zooloji bilimleri/Hayvanlar

Dergi: Turkish Journal of Zoology 2014 Vol.38 Issue 3, pp.306-315

Belge Tipi: Makale

Yayın Tarihi: 5/2014

Belge Dili: İngilizce

Document ID (Org No.): 2000775617

Sıklık: İki Aylık

eISSN: 1303-6114

pISSN: 1300-0179

DOI: https://doi.org/10.3906/zoo-1302-31

Key words: Histology

maturity index

gametogenesis

spawning

eastern Mediterranean

Sayı

Yazarlar:

Georgios KAZANIDIS | Alexios LOLAS | Dimitris VAFIDIS

Yayıncı:

TUBITAK

Ana Başlıklar:

Zooloji bilimleri/Hayvanlar

Dergi:

Turkish Journal of Zoology 2014 Vol.38 Issue 3, pp.306-315

Belge Tipi:

Makale

Yayın Tarihi:

5/2014

Belge Dili:

İngilizce

Document ID (Org No.):

2000775617

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179

DOI:

https://doi.org/10.3906/zoo-1302-31