4.2 Article

Stress response of brown pelican nestlings to ectoparasite infestation

Journal

GENERAL AND COMPARATIVE ENDOCRINOLOGY
Volume 166, Issue 1, Pages 33-38

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygcen.2009.08.009

Keywords

Brown pelican; Carios capensis; Corticosterone; Ectoparasites; Pelecanus occidentalis; Stress

Funding

  1. South Carolina Department of Natural Resources

Ask authors/readers for more resources

Measurement of corticosterone has become a useful tool for assessing the response of individuals to ecological stressors of interest. Enhanced corticosterone levels can promote survival of stressful events; however, in situations where a stressor persists and corticosterone levels remain elevated, the adrenocortical response can be detrimental. A potential ecological stressor for wild birds is parasitism by ectoparasites. We studied the stress response of 11-23-day-old brown pelican (Pelecanus occidentalis) nestlings by measuring plasma corticosterone levels in relation to the presence of the soft tick Carlos capensis at two colonies in South Carolina in 2005. We expected to see higher baseline and stress-induced levels of corticosterone for parasitized chicks compared to those nestlings with no ticks. Although nestlings mounted a response to capture stress, tick category was not associated with corticosterone levels at either colony. Our results appear to contrast those of previous studies and indicate that the adrenocortical response of the host is likely dependent on the type of ectoparasite and the degree of infestation. (C) 2009 Elsevier Inc. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.2
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
Article Endocrinology & Metabolism

Molecular cloning of estrogen receptor and its function on vitellogenesis in pompano (Trachinotus ovatus)

Xiaomeng Li, Charles Brighton Ndandala, Qi Zhou, Chunyan Huang, Guangli Li, Huapu Chen

Summary: This study investigated the role of estrogen receptors (ERs) in vitellogenesis (Vtgs) regulation in pompano fish. The findings suggest that E2 may regulate the expression of different subtypes of vtg through ERs, displaying a compensatory expression effect on the regulation of ers and vtgs. This provides a theoretical basis for further research on reproductive endocrinology in pompano fish.

GENERAL AND COMPARATIVE ENDOCRINOLOGY (2024)

Article Endocrinology & Metabolism

Molecular form identification of anterior pituitary gland-secreted prolactin in chicken

Norio Kansaku, Takeshi Ohkubo

Summary: Endocrine changes during bird reproduction, particularly the relationship between prolactin and incubation behavior, were investigated. The study monitored the physiological status and incubation behavior of Silkie hens over 1-2 years. The results showed that most mature hens exhibited incubation behavior multiple times, and there was a noticeable increase in nest occupancy 7-10 days before incubation onset. Protein analysis revealed that secreted prolactin during the reproductive cycle contains various isoforms, suggesting post-translational modifications like glycosylation and phosphorylation.

GENERAL AND COMPARATIVE ENDOCRINOLOGY (2024)

Article Endocrinology & Metabolism

Tilapia, a good model for studying reproductive endocrinology

Minghui Li, Lina Sun, Linyan Zhou, Deshou Wang

Summary: This article summarizes the importance of the Nile tilapia as an excellent animal model for studying reproductive endocrinology in fish, with a focus on the crucial role of estrogen in female development.

GENERAL AND COMPARATIVE ENDOCRINOLOGY (2024)

Article Endocrinology & Metabolism

COVID-19 as a chronic stressor and the importance of individual identity: A data-driven look at academic productivity during the pandemic

Breanna N. Harris, Carolyn M. Bauer, James A. Carr, Caitlin R. Gabor, Jennifer L. Grindstaff, Caleigh Guoynes, Jennifer J. Heppner, Cris C. Ledon-Rettig, Patricia C. Lopes, Sharon E. Lynn, Carla B. Madelaire, Lorin A. Neuman-Lee, Maria G. Palacios, Paul Soto, Jennifer Terry

Summary: The COVID-19 pandemic had a significant impact on academics, particularly on those with minoritized identities or who were early career, caregivers, or had intersecting identities. The pandemic altered the impact factors of academia, including scholarly products, and affected the way individuals could respond. It is predicted that the pandemic will have long-term impacts on the population dynamics, composition, and landscape of the academic ecosystem. The number of journal submissions decreased, especially among women authors, and the pandemic heavily impacted women authors from Asia and the Middle East.

GENERAL AND COMPARATIVE ENDOCRINOLOGY (2024)