Social and hormonal factors influencing infanticide and its suppression in adult male Long-Evans rats (Rattus norvegicus).

In Exp. 1 6 adult male Long-Evans derived rats ( Rattus norvegicus) and 6 adult male spiny mice ( Acomys cahirinus) were observed individually inside a 60-cm × 30-cm × 30-cm open field during a 15-min. session. Measures of locomotion, immobility, self-grooming, rearing-up, and object contact were obtained. Tests of species differences indicated that spiny mice showed significantly more locomotor and rearing behavior than Norway rats. In Exp. 2 12 adult Norway rats (6 male, 6 female) and 12 adult spiny mice (6 male, 6 female) were observed individually inside a six-compartment maze during a 15-min. session. Although no sex difference in maze exploration was found, spiny mice showed significantly more maze exploration than Norway rats. These results suggest that spiny mice, highly precocial in development relative to Norway rats, exhibit correlates of that neonatal competence as adults evidenced by greater behavioral activity and locomotor exploration in novel environments.

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The behaviour of adult male Long-Evans rats Rattus norvegicus toward pups of different ages

Behavioural Processes ◽

10.1016/0376-6357(91)90060-d ◽

1991 ◽

Vol 23 (2) ◽

pp. 89-102 ◽

Cited By ~ 6

Author(s):

Richard E. Brown ◽

Susan Douglas

Keyword(s):

Adult Male ◽

Rattus Norvegicus ◽

Different Ages ◽

Long Evans

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HORMONAL FACTORS INFLUENCING SALT APPETITE IN LACTATION

Australian Journal of Experimental Biology and Medical Science ◽

10.1038/icb.1972.79 ◽

1972 ◽

Vol 50 ◽

pp. 819-826 ◽

Cited By ~ 16

Author(s):

AA Shulkes ◽

Memma D Covelli ◽

DA Denton ◽

JF Nelson

Keyword(s):

Salt Appetite ◽

Hormonal Factors ◽

Factors Influencing

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Endoparasitic Infection in Laboratory Rat Strain, Long-Evans (Rattus norvegicus Berkenhout, 1769)

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v44i1.2718 ◽

1970 ◽

Vol 44 (1) ◽

pp. 109-116 ◽

Cited By ~ 1

Author(s):

Farhana Muznebin ◽

Hamida Khanum ◽

Zaibun Nessa ◽

Dipa Islam

Keyword(s):

Key Words ◽

Rattus Norvegicus ◽

Parasite Species ◽

Hymenolepis Diminuta ◽

Helminth Parasite ◽

New Finding ◽

Syphacia Muris ◽

Rat Strain ◽

Long Evans ◽

Taxonomic Groups

In the present study, five helminth parasite species from two taxonomic groups were identified from Long-Evans (Rattus norvegicus Berkenhout, 1769). The cestodes were Vampirolepis nana Siebold, Hymenolepis diminuta Rud and nematodes were Citellina dispar Prendel, Heterakis spumosa Schneider and Syphacia muris Yamaguti. C. dispar is a new finding in Bangladesh. The highest prevalence of H. diminuta was recorded but the highest intensity was recorded in V. nana. The prevalence and intensity of V. nana was 56.25% and 65.11±13.23; H. dimisnuta was 72.92% and 4.37±0.89; C. dispar was 62.50% and 19.63 ±2.10; H. spumosa was 66.67% and 9.06±1.85; and S. muris was 64.58% and 24.65±2.60 respectively. Differences in prevalence and intensity due to sexes and seasons were also evaluated. Key words: Cestodes, Nematodes, Helminth, Prevalence, Intensity. doi: 10.3329/bjsir.v44i1.2718 Bangladesh J. Sci. Ind. Res. 44(1), 109-116, 2009

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