Maximilian Hirschfeld

ORCID: 0000-0002-9662-7320
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Turtle Biology and Conservation
  • Ichthyology and Marine Biology
  • Physiological and biochemical adaptations
  • Bird parasitology and diseases
  • Ocean Acidification Effects and Responses
  • Fish Ecology and Management Studies
  • Marine animal studies overview
  • Corporate Governance and Law
  • Biomedical and Chemical Research
  • Amphibian and Reptile Biology
  • Law and Political Science
  • Venomous Animal Envenomation and Studies
  • Mosquito-borne diseases and control
  • Zoonotic diseases and public health
  • Parasite Biology and Host Interactions
  • Human-Animal Interaction Studies
  • Viral Infections and Vectors
  • Leptospirosis research and findings
  • Criminal Law and Policy
  • Marine and fisheries research
  • Toxoplasma gondii Research Studies
  • Marine Ecology and Invasive Species
  • Coral and Marine Ecosystems Studies
  • Fish Biology and Ecology Studies
  • Digitalization, Law, and Regulation

James Cook University
2018-2025

University of the Sunshine Coast
2023-2025

Universidad San Francisco de Quito
2015-2023

Charles Darwin Foundation
2014-2023

University of North Carolina at Chapel Hill
2015

Abstract Background The interplay of animal dispersal and environmental heterogeneity is fundamental for the distribution biodiversity on earth. In ocean, interaction physical barriers has primarily been examined organisms with planktonic larvae. Animals that lack a life stage depend active are however likely to produce distinctive patterns. Methods We used available literature population genetics phylogeography elasmobranchs (sharks, rays skates) examine how marine ecology shape genetic...

10.1111/geb.13379 article EN Global Ecology and Biogeography 2021-09-07

The green turtle, Chelonia mydas, is an endangered marine chelonian with a circum-global distribution. Reference blood parameter intervals have been published for some species, but baseline hematology, biochemical, and gas values are lacking from the Galapagos sea turtles. Analyses were done on samples drawn 28 turtles captured in two foraging locations San Cristóbal Island (14 each site). Of these turtles, 20 immature of unknown sex; other eight males (five mature, three immature). A...

10.1371/journal.pone.0096487 article EN cc-by PLoS ONE 2014-05-13

Abstract Shark fishing, driven by the fin trade, is primary cause of global shark population declines. Here, we present a case study that exemplifies how industrial fisheries are likely depleting populations in Eastern Tropical Pacific Ocean. In August 2017, vessel Fu Yuan Yu Leng 999, Chinese flag, was detained while crossing through Galápagos Marine Reserve without authorization. This contained 7639 sharks, representing one largest seizures recorded to date. Based on sample 929 individuals...

10.1038/s41598-021-94126-3 article EN cc-by Scientific Reports 2021-07-22

The hawksbill turtle, Eretmochelys imbricata, is a marine chelonian with circum-global distribution, but the species critically endangered and has nearly vanished from eastern Pacific. Although reference blood parameter intervals have been published for many populations, including nesting Atlantic hawksbills, no such baseline biochemical gas values reported wild Pacific turtles. Blood samples were drawn eight turtles captured in near shore foraging locations within Galápagos archipelago over...

10.1093/conphys/cox028 article EN cc-by Conservation Physiology 2017-01-01

Abstract Marine iguanas occasionally face severe food shortages because of algal dieback during El Niño events. Research on their adaptations to these periods has highlighted unique ability shrink in body length, which reduces energetic needs. Additional mechanisms, like sustaining lower temperatures and metabolic rates, could potentially also energy consumption, but have never been examined. We measured 665 over an 11‐year period including three events, examined how heart rates (a proxy for...

10.1111/jzo.13254 article EN cc-by-nc Journal of Zoology 2025-01-24

The Galapagos sea lion ( Zalophus wollebaeki ), an endangered species, experiences high pup mortality (up to 100%) in years when El Niño events reduce food supply the Islands. Mortality of pups non-El is estimated be 5% undisturbed colonies. From 2009 2012 we observed 67%) colonies close capital, Puerto Baquerizo Moreno, where contact with humans, domestic animals, and rats frequent. Gross postmortem findings from 54 included hemorrhagic lesions liver congestion lungs; histopathology...

10.7589/2016-05-092 article EN Journal of Wildlife Diseases 2017-03-20

The marine iguana, Amblyrhynchus cristatus, is an iconic lizard endemic to the Galápagos Islands of Ecuador, but surprisingly little information exists on baseline health parameters for this species. We analysed blood samples drawn from 35 iguanas captured at three locations San Cristóbal Island. A portable analyser (iSTAT) was used obtain near-immediate field results pH, lactate, partial pressure O2, CO2, bicarbonate (HCO3 (-)), percentage O2 saturation, haematocrit, haemoglobin, sodium,...

10.1093/conphys/cov034 article EN cc-by Conservation Physiology 2015-01-01

Oceanic islands play a central role in the study of evolution and island biogeography. The Galapagos Islands are one most studied oceanic archipelagos but research has almost exclusively focused on terrestrial organisms compared to marine species. Here we used bullhead shark (Heterodontus quoyi) single nucleotide polymorphisms (SNPs) examine evolutionary processes their consequences for genetic divergence biogeography shallow-water species without larval dispersal. sequential separation...

10.1038/s41437-023-00635-4 article EN cc-by Heredity 2023-07-03

The Galápagos sea lion, Zalophus wollebaeki, is an endemic and endangered species subject to population decline associated with environmental variability, such as El Niño events, constant feeding stress, exposure diseases through contact introduced species. Reference blood parameter intervals have been published for some pinniped species, but baseline biochemical gas values are lacking from Z. wollebaeki. We analyzed samples 30 juvenile lions (19 females, 11 males) captured in two rookeries...

10.7589/2015-04-084 article EN Journal of Wildlife Diseases 2015-11-03

Drug Prescribing for Patients with Chronic Kidney Disease in General Practice: a Cross-Sectional Study

10.1055/s-0028-1138923 article EN DMW - Deutsche Medizinische Wochenschrift 1902-09-01

Intraocular pressure using rebound tonometry in the Galápagos marine iguana (Amblyrhynchus cristatus)

10.52547/injvr.3.1.1 article EN cc-by-nc International Journal of Veterinary Research 2023-01-01

Effective conservation of marine megafauna requires a thorough understanding the ecology, physiology, population dynamics, and health vulnerable species. Assessing large, mobile animals poses particular challenges, in part because subjects are difficult to capture restrain, standard laboratory diagnostic tools apply field setting. Radiography is critically important tool used routinely by veterinarians, but it has seldom been possible image live vertebrates field. As first step toward...

10.3389/fmars.2018.00040 article EN cc-by Frontiers in Marine Science 2018-02-12

Article Die Wirkung eines Entherrschungsvertrags auf Mitteilungspflichten bei Veränderung des Stimmrechtsanteils was published on March 1, 2021 in the journal Aktiengesellschaft (volume 66, issue 6).

10.9785/ag-2021-660609 article DE Die Aktiengesellschaft 2021-03-01
Coming Soon ...