Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean
The size at first maturity of the bivalve Brachidontes rodriguezii was estimated in a population located in the northernmost limit of its distribution along Argentinean coast. Specimens were collected in two consecutive reproductive seasons from December 2011 to February 2012 and from December 2012...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253154_v98_n3_p457_Torroglosa http://hdl.handle.net/20.500.12110/paper_00253154_v98_n3_p457_Torroglosa |
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paper:paper_00253154_v98_n3_p457_Torroglosa2023-06-08T14:52:56Z Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean Giménez, Juliana ecosystem engineer gonadal maturity intertidal coasts Mussels biological development biometry bivalve breeding season ecosystem engineering histology intertidal environment population distribution population estimation sexual maturity size at maturity Argentina Atlantic Ocean Atlantic Ocean (Southwest) Bivalvia Brachidontes rodriguezii The size at first maturity of the bivalve Brachidontes rodriguezii was estimated in a population located in the northernmost limit of its distribution along Argentinean coast. Specimens were collected in two consecutive reproductive seasons from December 2011 to February 2012 and from December 2012 to February 2013. Individuals were evaluated using biometric and histological analyses of the gonads. This study intended to provide important information about the development of gonadal tissue according to shell length increase. Our results showed immature specimens lack gonads or exhibited groups of cells undergoing mitosis adjacent to the epithelium of the mantle and the tubules of the digestive gland. Male and female gonad development extended to mantle lobes and visceral mass as long as maturation occurred to reach sexual maturity. Using a logistic model our results showed that the size at which 50% of females were mature at a gonadal level was 7.05 mm in shell length; in males, 50% of the population were mature at 8.13 mm in shell length. The minimum shell length at which maturity was observed was 6.99 mm in shell length in females and 6.00 mm in shell length for males. Copyright © Marine Biological Association of the United Kingdom 2016. Fil:Giménez, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253154_v98_n3_p457_Torroglosa http://hdl.handle.net/20.500.12110/paper_00253154_v98_n3_p457_Torroglosa |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ecosystem engineer gonadal maturity intertidal coasts Mussels biological development biometry bivalve breeding season ecosystem engineering histology intertidal environment population distribution population estimation sexual maturity size at maturity Argentina Atlantic Ocean Atlantic Ocean (Southwest) Bivalvia Brachidontes rodriguezii |
| spellingShingle |
ecosystem engineer gonadal maturity intertidal coasts Mussels biological development biometry bivalve breeding season ecosystem engineering histology intertidal environment population distribution population estimation sexual maturity size at maturity Argentina Atlantic Ocean Atlantic Ocean (Southwest) Bivalvia Brachidontes rodriguezii Giménez, Juliana Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| topic_facet |
ecosystem engineer gonadal maturity intertidal coasts Mussels biological development biometry bivalve breeding season ecosystem engineering histology intertidal environment population distribution population estimation sexual maturity size at maturity Argentina Atlantic Ocean Atlantic Ocean (Southwest) Bivalvia Brachidontes rodriguezii |
| description |
The size at first maturity of the bivalve Brachidontes rodriguezii was estimated in a population located in the northernmost limit of its distribution along Argentinean coast. Specimens were collected in two consecutive reproductive seasons from December 2011 to February 2012 and from December 2012 to February 2013. Individuals were evaluated using biometric and histological analyses of the gonads. This study intended to provide important information about the development of gonadal tissue according to shell length increase. Our results showed immature specimens lack gonads or exhibited groups of cells undergoing mitosis adjacent to the epithelium of the mantle and the tubules of the digestive gland. Male and female gonad development extended to mantle lobes and visceral mass as long as maturation occurred to reach sexual maturity. Using a logistic model our results showed that the size at which 50% of females were mature at a gonadal level was 7.05 mm in shell length; in males, 50% of the population were mature at 8.13 mm in shell length. The minimum shell length at which maturity was observed was 6.99 mm in shell length in females and 6.00 mm in shell length for males. Copyright © Marine Biological Association of the United Kingdom 2016. |
| author |
Giménez, Juliana |
| author_facet |
Giménez, Juliana |
| author_sort |
Giménez, Juliana |
| title |
Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| title_short |
Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| title_full |
Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| title_fullStr |
Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| title_full_unstemmed |
Size at first maturity of Brachidontes rodriguezii (d'Orbigny, 1846) from the South-western Atlantic Ocean |
| title_sort |
size at first maturity of brachidontes rodriguezii (d'orbigny, 1846) from the south-western atlantic ocean |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253154_v98_n3_p457_Torroglosa http://hdl.handle.net/20.500.12110/paper_00253154_v98_n3_p457_Torroglosa |
| work_keys_str_mv |
AT gimenezjuliana sizeatfirstmaturityofbrachidontesrodrigueziidorbigny1846fromthesouthwesternatlanticocean |
| _version_ |
1768544627253575680 |