Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events?
We examined the tooth ultra-structure of harbour porpoises (Phocoena phocoena) from Scottish waters to determine whether the incidence of mineralization anomalies could be related to certain life history events (e.g. the achievement of sexual maturation) as well as other factors that affect the gene...
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Online Access: | http://hdl.handle.net/10508/7736 http://hdl.handle.net/10261/327930 https://doi.org/10.1017/S0025315409001866 |
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ftcsic:oai:digital.csic.es:10261/327930 2024-02-11T10:04:33+01:00 Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? Luque, P.L. Pierce, Graham John Learmonth, Jennifer Santos, María Begoña Ieno, Elena López, A. Reid, Robert Rogan, Emer González, Ángel Boon, Jan Law, R.J. Lockyer, C.H. Atlantic Ocean North Atlantic Northwest Atlantic Scotish waters 2009 http://hdl.handle.net/10508/7736 http://hdl.handle.net/10261/327930 https://doi.org/10.1017/S0025315409001866 unknown Centro Oceanográfico de Vigo Journal of the Marine Biological Association of the United Kingdom, 89. 2009: 893-902 0025-3154 http://hdl.handle.net/10508/7736 http://hdl.handle.net/10261/327930 doi:10.1017/S0025315409001866 441 none Centro Oceanográfico de Vigo Pesquerías research article 2009 ftcsic https://doi.org/10.1017/S0025315409001866 2024-01-16T11:49:11Z We examined the tooth ultra-structure of harbour porpoises (Phocoena phocoena) from Scottish waters to determine whether the incidence of mineralization anomalies could be related to certain life history events (e.g. the achievement of sexual maturation) as well as other factors that affect the general health of the individual (e.g. persistent organic pollutant (POP) concentrations in blubber). Five distinct types of mineralization anomalies were recorded: accessory lines, marker lines, dentinal resorption, cemental disturbance and pulp stones and the occurrence of these anomalies was scored by sex, age and maturity state. Overall, the incidence of mineralization anomalies was high and tended to increase with age. Marker lines and accessory lines were the most commonly recorded anomalies while pulp stones were least frequent. Duplicate teeth (i.e. from the same individual) always showed the same pattern of anomaly occurrence. Fitted binary generalized linear and additive models indicated that the presence of dentinal resorption, cemental disturbance and marker lines in harbour porpoise teeth increased with age, body length and maturity. Males displayed marker lines more frequently than females. Age was the best predictor of the incidence of dentinal resorption and cemental disturbance while age and sex were the best predictors of the incidence of marker lines. The time course of appearance of dentinal resorption and cemental disturbance suggests that their occurrence could be related to physiological stress linked to sexual maturation. Marker lines were found within growth layer groups which coincided with the beginning of weaning and sexual maturation, suggesting an association with these two major life history events. Accessory lines were found in most teeth and may be a normal characteristic of porpoise teeth or reflect regular events. Pulp stones appeared only in mature animals. We found no evidence that the presence of anomalies in teeth was significantly related to POP concentrations in the blubber. No Article in Journal/Newspaper Harbour porpoise North Atlantic Northwest Atlantic Phocoena phocoena Digital.CSIC (Spanish National Research Council) Journal of the Marine Biological Association of the United Kingdom 89 5 893 902 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Centro Oceanográfico de Vigo Pesquerías |
spellingShingle |
Centro Oceanográfico de Vigo Pesquerías Luque, P.L. Pierce, Graham John Learmonth, Jennifer Santos, María Begoña Ieno, Elena López, A. Reid, Robert Rogan, Emer González, Ángel Boon, Jan Law, R.J. Lockyer, C.H. Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
topic_facet |
Centro Oceanográfico de Vigo Pesquerías |
description |
We examined the tooth ultra-structure of harbour porpoises (Phocoena phocoena) from Scottish waters to determine whether the incidence of mineralization anomalies could be related to certain life history events (e.g. the achievement of sexual maturation) as well as other factors that affect the general health of the individual (e.g. persistent organic pollutant (POP) concentrations in blubber). Five distinct types of mineralization anomalies were recorded: accessory lines, marker lines, dentinal resorption, cemental disturbance and pulp stones and the occurrence of these anomalies was scored by sex, age and maturity state. Overall, the incidence of mineralization anomalies was high and tended to increase with age. Marker lines and accessory lines were the most commonly recorded anomalies while pulp stones were least frequent. Duplicate teeth (i.e. from the same individual) always showed the same pattern of anomaly occurrence. Fitted binary generalized linear and additive models indicated that the presence of dentinal resorption, cemental disturbance and marker lines in harbour porpoise teeth increased with age, body length and maturity. Males displayed marker lines more frequently than females. Age was the best predictor of the incidence of dentinal resorption and cemental disturbance while age and sex were the best predictors of the incidence of marker lines. The time course of appearance of dentinal resorption and cemental disturbance suggests that their occurrence could be related to physiological stress linked to sexual maturation. Marker lines were found within growth layer groups which coincided with the beginning of weaning and sexual maturation, suggesting an association with these two major life history events. Accessory lines were found in most teeth and may be a normal characteristic of porpoise teeth or reflect regular events. Pulp stones appeared only in mature animals. We found no evidence that the presence of anomalies in teeth was significantly related to POP concentrations in the blubber. No |
format |
Article in Journal/Newspaper |
author |
Luque, P.L. Pierce, Graham John Learmonth, Jennifer Santos, María Begoña Ieno, Elena López, A. Reid, Robert Rogan, Emer González, Ángel Boon, Jan Law, R.J. Lockyer, C.H. |
author_facet |
Luque, P.L. Pierce, Graham John Learmonth, Jennifer Santos, María Begoña Ieno, Elena López, A. Reid, Robert Rogan, Emer González, Ángel Boon, Jan Law, R.J. Lockyer, C.H. |
author_sort |
Luque, P.L. |
title |
Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
title_short |
Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
title_full |
Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
title_fullStr |
Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
title_full_unstemmed |
Dentinal anomalies in teeth of harbour porpoises (Phocoena phocoena) from Scottish waters: are they linked to sexual maturation and environmental events? |
title_sort |
dentinal anomalies in teeth of harbour porpoises (phocoena phocoena) from scottish waters: are they linked to sexual maturation and environmental events? |
publishDate |
2009 |
url |
http://hdl.handle.net/10508/7736 http://hdl.handle.net/10261/327930 https://doi.org/10.1017/S0025315409001866 |
op_coverage |
Atlantic Ocean North Atlantic Northwest Atlantic Scotish waters |
genre |
Harbour porpoise North Atlantic Northwest Atlantic Phocoena phocoena |
genre_facet |
Harbour porpoise North Atlantic Northwest Atlantic Phocoena phocoena |
op_relation |
Centro Oceanográfico de Vigo Journal of the Marine Biological Association of the United Kingdom, 89. 2009: 893-902 0025-3154 http://hdl.handle.net/10508/7736 http://hdl.handle.net/10261/327930 doi:10.1017/S0025315409001866 441 |
op_rights |
none |
op_doi |
https://doi.org/10.1017/S0025315409001866 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
89 |
container_issue |
5 |
container_start_page |
893 |
op_container_end_page |
902 |
_version_ |
1790601203932987392 |