Aquatic Mammals (2009)
Heterochrony, the change in timing of developmental processes, is thought to be a key process shaping the numerous limb morphologies of tetrapods. Through a delayed offset in digit development, all…
Epidemiological pattern of tattoo skin disease: A potential general health indicator for cetaceans
Van Bressem, M. F.; Van Waerebeek, K.; Aznar, F. J.; Raga, J. A.; Jepson, P. D.; Duignan, P.; Deaville, R.; Flach, L.; Viddi, F.; Baker, J. R.; Di Beneditto, A. P.; Echegaray, M.; Genov, T.; Reyes, J.; Felix, F.; Gaspar, R.; Ramos, R.; Peddemors, V.; Sanino, G. P.; Siebert, U.
Diseases of Aquatic Organisms (2009)
The presence of tattoo skin disease (TSD) was examined in 1392 free-ranging and dead odontocetes comprising 17 species from the Americas, Europe, South Africa, New Zealand and Greenland. We investigated…
Spatial and temporal impact of pingers on porpoises
Carlström, Julia; Berggren, Per; Tregenza, Nick J. C.
Canadian Journal of Fisheries and Aquatic Sciences (2009)
Bycatches are considered the most serious threat to harbour porpoises (Phocoena phocoena) and other small cetaceans worldwide. Pingers are used to reduce bycatch levels, but may also deter porpoises from…
Dall’s porpoise (Phocoenoides dalli) echolocation click spectral structure
Bassett, Hannah R.; Baumann, Simone; Campbell, Gregory S.; Wiggins, Sean M.; Hildebrand, John A.
The Journal of the Acoustical Society of America (2009)
Dall’s porpoise (Phocoenoides dalli) echolocation clicks have not been widely recorded. Concurrent with visual observations, acoustic recordings of free‐ranging Dall’s porpoise were made offshore of southern California using a towed…
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, G. J.; Learmonth, J. A.; Santos, M. B.; Ieno, E.; López, A.; Reid, R. J.; Rogan, E.; González, A. F.; Boon, J.; Law, R. J.; Lockyer, C. H.
Journal of the Marine Biological Association of the United Kingdom (2009)
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.…
Temporary shift in masked hearing thresholds in a harbor porpoise (Phocoena phocoena) after exposure to seismic airgun stimuli
Lucke, Klaus; Siebert, Ursula; Lepper, Paul A.; Blanchet, Marie-Anne
The Journal of the Acoustical Society of America (2009)
An auditory study was conducted to derive data on temporary threshold shift (TTS) induced by single impulses. This information should serve as basis for the definition of noise exposure criteria…
Harbour porpoise (Phocoena phocoena) conservation management: A dimensional approach
Jenkins, Rhian E.; Brown, Raymond D.H.; Phillips, Michael R.
Marine Policy (2009)
Harbour porpoises Phocoena phocoena are protected under the Habitats and Species Directive (92/43/EEC) and listed as a priority species in the City and County of Swansea's Biodiversity Action Plan (BAP).…
Functional morphology of the nasal complex in the harbor porpoise (Phocoena phocoena L.)
Huggenberger, Stefan; Rauschmann, Michael A.; Vogl, Thomas J.; Oelschläger, Helmut H. A.
Anatomical Record (2009)
Toothed whales (Odontoceti, Cetacea) are the only aquatic mammals known to echolocate, and probably all of them are able to produce click sounds and to synthesize their echoes into a…
Scanning sonar of rolling porpoises during prey capture dives
Akamatsu, T.; Wang, D.; Wang, K.; Li, S.; Dong, S.
Journal of Experimental Biology (2009)
Dolphins and porpoises have excellent biosonar ability, which they use for navigation, ranging and foraging. However, the role of biosonar in free-ranging small cetaceans has not been fully investigated. The…
Spatio-temporal associations between harbour porpoise Phocoena phocoena and specific fisheries in the German Bight
Herr, Helena; Fock, Heino O.; Siebert, Ursula
Biological Conservation (2009)
Interactions between cetaceans and fisheries are a major concern of cetacean conservation and fisheries management, as by-catch and resource competition occur as a result. To assess potential interaction between porpoises…