Reproduction in Collared Peccaries

Lochmiller, Robert L.; Hellgren, Eric C.

doi:10.1007/978-1-4612-2866-0_21

Cited by 4 publications

(4 citation statements)

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“…Lactation is associated with inhibited ovarian follicular development and decreased gonadal secretion (Dial & Britt, 1986;McDonald, 1980). Collared peccary young have been able to survive if weaned at 6±8 weeks in captivity, but suckling has been observed up to 24 weeks postpartum in the wild (Lochmiller & Hellgren, 1992). The act of suckling may trigger neural afferents to the pituitary suppressing luteinizing hormone (LH) release.…”

Section: Discussionmentioning

confidence: 99%

“…Studies in the southwestern U.S.A. show that collared peccary reproduction is sensitive to nutritional stress (Low, 1970: Lochmiller, Hellgren & Grant, 1986Lochmiller & Hellgren, 1992). Studies in the southwestern U.S.A. show that collared peccary reproduction is sensitive to nutritional stress (Low, 1970: Lochmiller, Hellgren & Grant, 1986Lochmiller & Hellgren, 1992).…”

Section: Discussionmentioning

confidence: 99%

“…Without an LH surge during a reproductive cycle, ovulation cannot occur, and thus prolonged suckling periods may cause a delayed return to oestrus (Dial & Britt, 1986). Collared peccary young have been able to survive if weaned at 6±8 weeks in captivity, but suckling has been observed up to 24 weeks postpartum in the wild (Lochmiller & Hellgren, 1992). Thus, lactational anoestrus may contribute to the long estimated parturition±conception interval for white-lipped and collared peccaries.…”

Section: Discussionmentioning

confidence: 99%

“…Extrinsic factors such as nutrition, density, and disease may also in¯uence the lower reproductive productivity of white-lipped peccaries compared to collared peccaries. Studies in the southwestern U.S.A. show that collared peccary reproduction is sensitive to nutritional stress (Low, 1970: Lochmiller, Hellgren & Grant, 1986Lochmiller & Hellgren, 1992). In experimental studies on captive female collared peccaries, decreases in protein and energy caused a lower ovulation rate and fertilization rate, and a higher incidence of anoestrus (Lochmiller et al, 1986).…”

Section: Discussionmentioning

confidence: 99%

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Reproduction and productivity of white‐lipped and collared peccaries in the Peruvian Amazon

Gottdenker

Bodmer

1998

Journal of Zoology

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White-lipped peccaries (Tayassu pecari) and collared peccaries (Tayassu tajacu) are common ungulates of Amazonia that are integral to the ecosystem and are important sources of meat for local people. Information on the reproduction and productivity of peccaries is essential for implementing management practices that conserve peccary populations over short and long time-scales. This paper examines the reproductive biology of white-lipped and collared peccaries in the northeastern Peruvian Amazon in and around the Tamshiyacu-Tahuayo Community Reserve. Skulls and reproductive tracts of white-lipped and collared peccary were examined from hunted samples collected by local people, as part of a participatory wildlife management programme. In this Amazonian site both white-lipped and collared peccaries were in follicular and luteal stages year round. Similarly, conceptions, births and pregnancies were aseasonal for both species. Of white-lipped peccary females, 32.4% were pregnant (n = 219 adult females examined) compared with 46% of collared peccary females (n = 89 adult females examined). Overall, gross productivity was 0.53 foetuses/adult female for white-lipped peccaries and 0.89 foetuses/adult female for collared peccaries. Gross fecundity (number of female young produced/number of adult females) was 0.26 for white-lipped peccaries and 0.37 for collared peccaries. The estimated parturition±conception interval was 250 days (192±331 at the 90% con®dence interval) for white-lipped peccaries and 129 days (80±205 at the 90% con®dence interval) for collared peccaries. This study shows that reproductive productivity of whitelipped peccary is lower than collared peccary in the northeastern Peruvian Amazon. This difference in reproductive productivity has implications for management strategies, and suggests that white-lipped peccaries are more susceptible to the effects of hunting than collared peccaries.

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Section: Discussionmentioning

confidence: 99%