Now showing items 21-40 of 147
Gonzalvo Villegas, Joan (Date of defense: 2016-01-18)
The Mediterranean Sea, the largest and deepest enclosed sea on Earth, is a marine biodiversity hotspot. Its cetacean diversity is also remarkable; although the species with a regular occurrence and resident populations are ...
Álvarez de Quevedo i Gispert, Irene (Date of defense: 2016-01-20)
La tortuga babaua (Caretta caretta) és una espècie amenaçada, que ha experimentat una greu reducció de les seves poblacions a nivell mundial. En aquest sentit, s’han identificat molts factors implicats en la mortalitat ...
Roscales García, José Luis (Date of defense: 2010-10-29)
Exposure to contaminants, such as Persistent Organic Pollutants (POPs), is currently considered a serious anthropogenic threat to marine predators and their food webs. Exposure to contaminants by marine wildlife is mainly ...
Vighi, Morgana (Date of defense: 2016-01-19)
Cetaceans have historically been object of heavy exploitation, and are still currently subject to different threats. For conservation and management purposes, most of the large cetacean populations have been categorized ...
Zanetti, Daniela (Date of defense: 2015-11-26)
The present thesis deals with a deep analysis of the genetic structure of extant human worldwide populations, with a special focus on the Mediterranean. Different genetic markers, 18 Alu insertions and 367 single ...
San Millán Alonso, Marta (Date of defense: 2015-11-27)
Conocer en detalle la morfología del acetábulo de los primates en general, y de los humanos en particular, tiene implicaciones importantes tanto en Antropología como en Medicina Clínica y Forense. Con este objetivo, se ha ...
García Galea, Eduardo A. (Date of defense: 2015-10-29)
En la naturaleza observamos individuos que se comunican honestamente con otros aun cuando el engaño parece la opción más ventajosa. Esta tesis estudia mediante qué mecanismos la comunicación honesta se mantiene en uno de ...
Córdova Palomera, Aldo (Date of defense: 2015-09-21)
In the behavioral sciences, the concept of phenotypic plasticity can be roughly categorized into two classes: developmental and activational plasticity. Developmental plasticity denotes the capacity of an individual carrying ...
Silva, Ricardo Neves Petersen (Date of defense: 2015-07-17)
Pine wilt disease is the result of a complex interaction between a nematode, a host tree and an insect vector. The pine wood nematode (PWN) Bursaphelenchus xylophilus (Steiner and Buhrer) Nickle is the causal agent, being ...
Morais Pinela, Ana (Date of defense: 2015-07-15)
Distinguishing population units of small cetaceans continuously distributed in a widespread area is challenging, but critical for their conservation and management. The common dolphin (genus Delphinus) has a wide distribution ...
Aliaga Martínez, Eugenio Andrés (Date of defense: 2015-05-14)
El estudio del desgaste microscópico sobre las superficies del esmalte dental es una importante fuente de información para interpretar la dieta y hábitos alimentarios de diferentes grupos de humanos y Primates no-humanos, ...
Stegun Vidigal, Vera Cristina (Date of defense: 2015-01-21)
The short-tailed opossums of the genus Monodelphis Burnett, 1830 are small-bodied semifossorial marsupials which inhabit almost all major biomes of South America up to 2200 m. Even though it is one of the most speciose ...
Mitjans Niubó, Marina (Date of defense: 2014-12-17)
Severe mental disorders, such as Major Depressive Disorder (MDD), Bipolar Disorder (BD) and Schizophrenia (SCZ), represent a huge burden to society, reflecting the limited efficacy of current drug treatments. Although the ...
Santulli Sanzo, Giulla (Date of defense: 2014-11-21)
The target species of this thesis, the European mink (Mustela lutreola) and the American mink (Neovison vison), are considered respectively as one of the most threatened carnivores and as one of the worst invaders in ...
Monroy López, Mario (Date of defense: 2014-11-28)
Los ecosistemas andinos están considerados como unos de los más amenazados a nivel mundial y su ictiofauna nativa es una de las más vulnerables debido al alto grado de endemicidad y a la gran variedad de impactos antrópicos ...
Lozano-Fernandez, Jesus (Date of defense: 2014-12-04)
La metamorfosi és un procés de canvi morfològic radical que succeeix en un període específic durant el desenvolupament postembrionari de diverses espècies animals, tals com amfibis o insectes. En el cas dels insectes, hi ...
García-Tarrasón, Manuel (Date of defense: 2014-12-19)
The results presented in this thesis have shown the strong dependence of Audouin’s gull from the Ebro Delta on fisheries. Foraging movements of breeding birds showed a great association with fishing activities (specially ...
Gamarra Rubio, Beatriz (Date of defense: 2014-12-04)
La present Tesi Doctoral tracta de l’estudi de la morfologia dental, concretament de la primera (M1) i segona (M2) molars inferiors d’un ampli grup de primats catarrins. En general, la morfologia dental és el reflex del ...
Delgado Garcia, Lídia (Date of defense: 2014-12-19)
El Delta de l'Ebre és el tercer delta més gran de la Mediterrània, un lloc d'alt impacte econòmic i ambiental, amb una gran varietat d'aiguamolls. És un ambient d'estuari influenciat pel cultiu de ...
Barrull i Ventura, Joan (Date of defense: 2014-12-03)
En gestió i conservació resulta d’interès comprendre els mecanismes que regulen l’estructuració o condicionen la dinàmica de les comunitats. Amb la informació que proporcionen 842 fotografies de càmeres trampa i 8.175 ...