Stephanie KalbererFrankfurt Zoological Society · Europe
Next Generation and European Programme Coordinator
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March 2013 - July 2013
Marine Research Station Mériscope
- Project Manager
- Coordination of the field season, writing project and grant application
September 2011 - February 2015
- Research Assistant
Understanding the ability of animals to cope with a changing environment is critical in a world affected by anthropogenic disturbance. Individual foraging strategies may influence the coping ability of entire populations, as these strategies can be adapted to contrasting conditions, allowing populations with foraging polymorphisms to be more resili...
The Galápagos sea lion (GSL, Zalophus wollebaeki) is the smallest sea lion species in the world, endemic to the Galápagos archipelago and formerly considered a subspecies of the California sea lion (Zalophus californianus). Breeding rookeries occur throughout the archipelago. Females are highly site faithful; hence genetic exchange between rookerie...
Male alliances are an intriguing phenomenon in the context of reproduction since, in most taxa, males compete over an indivisible resource, female fertilization. Adult male bottlenose dolphins (Tursiops aduncus) in Shark Bay, Western Australia, form long-term, mul-tilevel alliances to sequester estrus females. These alliances are therefore critical...
Animal personalities and their degree of plasticity have been demonstrated to be adaptive and associated with ecologically important traits. While the concept is well established in a broad range of species, studies with free-ranging pinnipeds remain rare. Here we use a long-studied but declining population of Galápagos sea lions to demonstrate the...
Age at primiparity (AP) is a key life history trait which is crucial to the evolution of life history strategies. This trait is particularly interesting in pinnipeds (walrus, eared seals, and true seals), which are monotocous animals. Thus, the commonly observed trade‐off between offspring quality and quantity does not apply to this taxon. Therefor...
Tiempos de asociación madre-cría durante el amamantamiento del lobo marino de Galápagos (Zalophuswollebaeki)
Variation in life history traits is directly linked to individual fitness. This interplay is complicated by environmental perturbations in an unpredictable habitat. To maximise fitness, individuals react to environmental changes by reallocating resources between maintenance, growth and reproduction. Disentangling these factors is complicated as tra...
Population monitoring is vital for conservation and management. However, simple counts of animals can be misleading and this problem is exacerbated in seals (pinnipeds) where individuals spend much time foraging away from colonies. We analyzed a 13-year-series of census data of Galapagos sea lions (Zalophus wollebaeki) from the colony of Caamaño, a...
Alliance formation among males for the purpose of competition over oestrous females provides an evolutionary puzzle, as males cooperate to obtain a resource that cannot be shared. Kin selection may provide an evolutionary explanation for male cooperation, as males may gain indirect fitness benefits by cooperating with relatives. In the eastern gulf...
Lidocaine, bupivacaine or ropivacaine are used routinely to manage perioperative pain. Sparse data exist evaluating the effects of local anaesthetics (LA) on fibroblasts, which are involved actively in wound healing. Therefore, we investigated the effects of the three LA to assess the survival, viability and proliferation rate of fibroblasts. Human...
Understanding population dynamics and life history characteristics are crucial for species conservation. Key factors affecting population persistence are population size, environmental stochasticity, reproduction and survival, and these are the topics of my PhD. I focus on life histories, demography and population dynamics of Galapagos sea lions, a long-lived tropical species with a long maturation time and a low reproductive output, living in an unpredictable habitat.