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Physaloptera retusa (Nematoda, Physalopteridae) in naturally infected sagebrush lizards, Sceloporus graciosus (Iguanidae)

, : Physaloptera retusa (Nematoda, Physalopteridae) in naturally infected sagebrush lizards, Sceloporus graciosus (Iguanidae). Journal of Wildlife Diseases 25(3): 425-429

Adult sagebrush lizards (S. graciosus) were collected from Windy Gap Trail, Los Angeles County, California, USA, during the month of May in 1986, 1987 and 1988; total numbers were 86 (comprising 53 males and 33 females), 36 (29 and 7), and 170 (91 and 79), respectively. 32 juveniles were collected in 1988 from the same locality. The stomach nematode P. retusa was found in 81 (28%) adults and 2 (6%) juveniles. Attached nematodes caused erosive inflammatory foci in the stomach mucosa. Early lesions were U-shaped, with a depth of approximately 50 micro m, and length 140 micro m. Degenerating gastric glands occurred in the adjacent mucosa. Fibrous scars, about 100 micro m in diameter, resulted from healed lesions; regenerating gastric glands occurred at the periphery. There were no externally visible signs of infection.

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Accession: 001909281

PMID: 2761018

DOI: 10.7589/0090-3558-25.3.425

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Related references

Ruth, S.R., 1978: A comparison of the demography and female reproduction in sympatric western fence lizards Sceloporus occidentalis and sagebrush lizards Sceloporus graciosus on Mount Diablo, Caifornia. Dissertation Abstracts International B Sciences and Engineering 38.8: 3589-3590

Green, G.A.; Livezey, K.B.; Morgan, R.L., 2001: Habitat selection by northern sagebrush lizards (Sceloporus graciosus graciosus) in the Columbia Basin, Oregon. Northwestern Naturalist. Winter; 823: 111-115

Mackey J.P., 1970: Habitat preferences of the lizards sceloporus occidentalis and sceloporus graciosus lacertilia iguanidae. Herpetologica: 51-56

Vicente, J.J.; Santos, E.D.s., 1967: Ocurrencia de Physaloptera retusa Rudolphi, 1819 em novo hospedeiro (Nematoda, Physalopteridae). The authors redescribe Physaloptera retusa from the stomach of a new host Tropidurus torquatus in the state of Para, Brazil. The systematics of this helminth are reviewed in detail.

Vicente, J.J. dos Santos, E., 1967: Ocorrencia de Physaloptera retusa Rudolphi, 1819 em novo hospedeiro (Nematoda, Physalopteridae). Atas Soc Biol Rio de J: 11: 75-77

Poinar G.O.; Vaucher C., 1972: The larval cycle of physaloptera retusa nematoda physalopteridae a parasite of a south american lizard. Bulletin du Museum National d'Histoire Naturelle Zoologie (74): 1321-1327

Poinar, GO.; Vaucher, C., 1972: Cycle larvaire de Physaloptera retusa Rudolphi, 1819 (Nematoda, Physalopteridae), parasite d'un lezard sud-americain. Bulletin Mus Natn Hist Nat Paris (Zool), 74: 1321-1327

Marcellini, D.; Mackey, J.P., 1970: Habitat preferences of the lizards, Sceloporus occidentalis and S. graciosus (Lacertilia, Iguanidae). Herpetologica, 26: 51-56

Congdon J.D.; Tinkle D.W., 1982: Energy expenditure in free ranging sagebrush lizards sceloporus graciosus. Metabolic rates of free-ranging S. graciosus (Sauria: Iguanidae) were measured during the summer using doubly labeled H2O. Adults of either sex and juveniles did not differ in field metabolic rates (0.26 ml CO2.cntdot.g-1.cntdot.h-1 or 160 J.cntdo...

Ruiz, Mé.; Wang, D.; Reinke, B.A.; Demas, G.E.; Martins, Eília.P., 2011: Trade-offs between reproductive coloration and innate immunity in a natural population of female sagebrush lizards, <i>Sceloporus graciosus.</i>. Trade-offs between immune function and reproduction are common to many organisms. Nevertheless, high energetic resources may eliminate the need for these trade-offs. In this study, we consider the effects of food availability on these trade-offs i...