Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis)

Seguel M, Perez-Venegas D, Gutierrez J, Crocker DE, De Rango E (2019)
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 92(3): 326-338.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Seguel, Mauricio; Perez-Venegas, Diego; Gutierrez, Josefina; Crocker, Daniel E.; De Rango, EugeneUniBi
Abstract / Bemerkung
Parasites can cause chronic stress in some animal species, and this type of stress response has been associated with adverse consequences for the host. In order to know whether parasitism elicited a stress response associated with decreased host fitness, hookworm (Uncinaria sp.) infection was studied in a colony of South American fur seals (Arctocephalus australis) in which hookworms infect nearly all pups born in a reproductive season. A parasite-free group was generated by treating a subset of pups with an antiparasitic drug before they developed patent hookworm infection. Stress and metabolic hormones, energy balance, and humoral and cellular immune parameters were measured in this group and hookworm-infected pups. Hookworms elicited a marked increase in plasma cortisol levels in fur seal pups. These hookworm-infected pups were able to maintain constant glucose levels, despite losing body mass over the course of infection potentially because of increased protein catabolism. Infected pups were able to mount an effective immune response against the parasite and eliminated hookworms from the intestine, recovering partial body mass lost as a result of hookworm infection at the end of the study period. As shown in previous studies, adequate glucose levels are critical for proper T lymphocyte reactivity, and it is possible that, through activation of a stress response, energy can be readily available for immune response against the parasite contributing to early recovery from infection. Although there are potential fitness costs to mounting a sustained stress response, these could also be adaptive and promote survival during critical life-history stages.
Erscheinungsjahr
2019
Zeitschriftentitel
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
Band
92
Ausgabe
3
Seite(n)
326-338
ISSN
1522-2152
eISSN
1537-5293
Page URI
https://pub.uni-bielefeld.de/record/2935391

Zitieren

Seguel M, Perez-Venegas D, Gutierrez J, Crocker DE, De Rango E. Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis). PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY. 2019;92(3):326-338.
Seguel, M., Perez-Venegas, D., Gutierrez, J., Crocker, D. E., & De Rango, E. (2019). Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis). PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY, 92(3), 326-338. doi:10.1086/702960
Seguel, M., Perez-Venegas, D., Gutierrez, J., Crocker, D. E., and De Rango, E. (2019). Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis). PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 92, 326-338.
Seguel, M., et al., 2019. Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis). PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY, 92(3), p 326-338.
M. Seguel, et al., “Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis)”, PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY, vol. 92, 2019, pp. 326-338.
Seguel, M., Perez-Venegas, D., Gutierrez, J., Crocker, D.E., De Rango, E.: Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis). PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY. 92, 326-338 (2019).
Seguel, Mauricio, Perez-Venegas, Diego, Gutierrez, Josefina, Crocker, Daniel E., and De Rango, Eugene. “Parasitism Elicits a Stress Response That Allocates Resources for Immune Function in South American Fur Seals (Arctocephalus australis)”. PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 92.3 (2019): 326-338.

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