Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina
In the Beagle Channel, southern South America (ca. 55°S 67°W), about 20% of false king crabs (Paralomis granulosa) >80 mm carapace length are fouled with the barnacle Notobalanus flosculus. To evaluate differences in growth rates of barnacles attached to artificial and live substrates, clay tiles...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v59_n3_p196_Venerus http://hdl.handle.net/20.500.12110/paper_1438387X_v59_n3_p196_Venerus |
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paper:paper_1438387X_v59_n3_p196_Venerus2023-06-08T16:15:50Z Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina Venerus, Leonardo Ariel Calcagno, Javier Angel Lovrich, Gustavo Alejandro Nahabedian, Daniel Eduardo Cirripedes False king crab Marine epibiosis Paralomis granulosa Sexual maturity growth substrate Beagle Channel South America Western Hemisphere World Chaceon affinis Cirripedia Limulus Notobalanus flosculus Paralomis granulosa Thoracica In the Beagle Channel, southern South America (ca. 55°S 67°W), about 20% of false king crabs (Paralomis granulosa) >80 mm carapace length are fouled with the barnacle Notobalanus flosculus. To evaluate differences in growth rates of barnacles attached to artificial and live substrates, clay tiles were anchored as collectors to the bottom at two different sites in the Beagle Channel in September 1996: in Ushuaia harbour (low currents and high levels of suspended matter) and around the Bridges Islands (strong currents and low level of suspended matter). Another set of collectors was deployed at the same sites in October 1998 to collect barnacles for histological studies. Tiles were removed from each place, approximately, on a monthly basis. Carapaces of P. granulosa with the epizoic N. flosculus were sampled between November 1996 and 1997, and between March 1998 and September 1999, to study sexual maturation of barnacles. Growth of barnacles was compared between the collectors and P. granulosa carapaces following a qualitative approach. A sexual maturity scale was defined, based on the stage of development of the female reproductive apparatus of N. flosculus. Growth rate of barnacles was highest in the harbour, intermediate on P. granulosa, and lowest around the Bridges Islands. Presence of oocytes was registered only in epizoic barnacles, suggesting that at least a proportion of these individuals is able to spawn on the carapaces. The potential advantages of settling on a living substrate, namely increased availability of food particles and decreased predation risks are discussed. © Springer-Verlag and AWI 2005. Fil:Venerus, L.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calcagno, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lovrich, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Nahabedian, D.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v59_n3_p196_Venerus http://hdl.handle.net/20.500.12110/paper_1438387X_v59_n3_p196_Venerus |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cirripedes False king crab Marine epibiosis Paralomis granulosa Sexual maturity growth substrate Beagle Channel South America Western Hemisphere World Chaceon affinis Cirripedia Limulus Notobalanus flosculus Paralomis granulosa Thoracica |
| spellingShingle |
Cirripedes False king crab Marine epibiosis Paralomis granulosa Sexual maturity growth substrate Beagle Channel South America Western Hemisphere World Chaceon affinis Cirripedia Limulus Notobalanus flosculus Paralomis granulosa Thoracica Venerus, Leonardo Ariel Calcagno, Javier Angel Lovrich, Gustavo Alejandro Nahabedian, Daniel Eduardo Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| topic_facet |
Cirripedes False king crab Marine epibiosis Paralomis granulosa Sexual maturity growth substrate Beagle Channel South America Western Hemisphere World Chaceon affinis Cirripedia Limulus Notobalanus flosculus Paralomis granulosa Thoracica |
| description |
In the Beagle Channel, southern South America (ca. 55°S 67°W), about 20% of false king crabs (Paralomis granulosa) >80 mm carapace length are fouled with the barnacle Notobalanus flosculus. To evaluate differences in growth rates of barnacles attached to artificial and live substrates, clay tiles were anchored as collectors to the bottom at two different sites in the Beagle Channel in September 1996: in Ushuaia harbour (low currents and high levels of suspended matter) and around the Bridges Islands (strong currents and low level of suspended matter). Another set of collectors was deployed at the same sites in October 1998 to collect barnacles for histological studies. Tiles were removed from each place, approximately, on a monthly basis. Carapaces of P. granulosa with the epizoic N. flosculus were sampled between November 1996 and 1997, and between March 1998 and September 1999, to study sexual maturation of barnacles. Growth of barnacles was compared between the collectors and P. granulosa carapaces following a qualitative approach. A sexual maturity scale was defined, based on the stage of development of the female reproductive apparatus of N. flosculus. Growth rate of barnacles was highest in the harbour, intermediate on P. granulosa, and lowest around the Bridges Islands. Presence of oocytes was registered only in epizoic barnacles, suggesting that at least a proportion of these individuals is able to spawn on the carapaces. The potential advantages of settling on a living substrate, namely increased availability of food particles and decreased predation risks are discussed. © Springer-Verlag and AWI 2005. |
| author |
Venerus, Leonardo Ariel Calcagno, Javier Angel Lovrich, Gustavo Alejandro Nahabedian, Daniel Eduardo |
| author_facet |
Venerus, Leonardo Ariel Calcagno, Javier Angel Lovrich, Gustavo Alejandro Nahabedian, Daniel Eduardo |
| author_sort |
Venerus, Leonardo Ariel |
| title |
Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| title_short |
Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| title_full |
Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| title_fullStr |
Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| title_full_unstemmed |
Differential growth of the barnacle Notobalanus flosculus (Archaeobalanidae) onto artificial and live substrates in the Beagle Channel, Argentina |
| title_sort |
differential growth of the barnacle notobalanus flosculus (archaeobalanidae) onto artificial and live substrates in the beagle channel, argentina |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v59_n3_p196_Venerus http://hdl.handle.net/20.500.12110/paper_1438387X_v59_n3_p196_Venerus |
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1768545753083412480 |