| BIO szerver | BIO server | ||
| Kabai Péter | Peter Kabai | ||
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| back to Wildlife Ecology and Management |
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| 6. Cervidae |
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| UNGULATES Phylogeny: Not fully resolved, Ungula (Latin): hoof
38 deer species, All ruminants |
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CERVIDAE |
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Species occuring in Europe:
Please, note that Roe deer is a closer relative of Elk or Mule deer than of red deer. Figure adapted from Randi et al. |
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ROE DEER (Capreolus capreolus) Odocoileinae Adult Size: 10 to 25 kg, 60 to 75 cm at shoulder
Distribution: Eurasia |
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Food and feeding Method: microhistological analysis of rumen or feces. Browsers: grasses, herbs, shrubs, tree shoots. Winter: less selective feeding Mátrai and Kabai (1989). Winter plant selection by red and roe deer in a forest habitat in Hungary. Acta Theriologica 34:227-234. Red and roe deer diet in winter Study area: mosaic habitat (pine, acacia, oak etc) Diet of Red and Roe deer was very simlar, depended on micro-habitat |
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Antlers: short (<30cm)
Development: Starts during winter, Velvet, mineralization Shedding velvet in spring First antler: 1 point Remember: antler is built of BONE Please visit Jeju Island page on roe deer www |
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| Lifespan: Max. 16 years. (Bucks 5 years,
does 6 to 7 years).
Heavy mortality at and shortly after birth and during first winter. Social groups: Solitary, forming small groups in winter. Territory: males mark and defend area from April Scent glands: forehead, tarsal, metatarsal. Damage to trees and shrubs |
Barking: Males bark
Territorial defence? Alarm call? Pursuit-deterrant? Reby et al. 1999. Anim Behav. see abstract Human disturbance: solitary males barked more Interesting video: roe barking at cat here Alarm signals in Concepts |
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Reproduction system: territorial polygyny(see
Concepts) |
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| Offspring: precocial (imprinting by mother to fawn
at Concepts) Found a "lost" fawn in forest? It is not lost, mother leaves
fawn alown hiding except for short periods of feeding. Do not take the
fawn home. http://www.photographersdirect.com/buyers/stockphoto.asp?imageid=1988149 |
Reproduction rate in Hungary (Heltay, Kabai, Sugár, Mátrai) Method: Embryo count All populations: almost 100% fertility, 2 embryos on average Field population: pregnant yearlings Extra rut in January? |
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| Red deer
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| Cervidae > Cervinae > Cervus elaphus Weight: 75 – 300 kg Food: any plant, including seedlings and barks of trees. |
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| Social behaviour: (extensive studies by Clutton-Brock)
Females stay in matrilinear groups. Mating: September – (October) |
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Male-
male competition:
Roaring contest
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Deep voice – large body in most species (as in humans)
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| Link to wonderful photos: Stefan Meyers | |||
| Male-male competition: roaring < parallel walk <
antler fight Most fighting around conception date. |
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| Advantages of fighting for females
Lifeime reproduction success (Clutton-Brock) Hinds: 0-14 calves No choice for males, but fight for females |
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| Male reproduction succes:
Repr. success of hinds: reaches maximum at age 2-3 years and stays
there |
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| Sexual dimorphism in size Females develop faster, males keep on going for longer |
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| Female reproductive strategy: trade-offs Fertility depends on condition Well, condition is critical in harsh Scottish islands. Among overweight
Hungarian ladies adult hinds were almost 100% fertile. In better habitats
30% of yearling females were pregnant. (embrio count, Heltay, Kabai,
Sugár, Mátrai) |
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| Condition of hinds with calves is poor. (Carcass weight,
kidney fat)
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| Mortality of milk hinds is higher that that of hinds wothout calves. Trade-offs: good condition is needed for reproduction. However, having a calf lowers condition and increases chances to die. Strategy: have a calf every second year. Would you have a boy or a girl? (see Concepts) |
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Fallow deer Cervidae > Cervinae > Dama dama |
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Coloration: white, menil, common, black |
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Reproduction
Distinct male and female (+calves) herds |
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Lek polygyny (McElligot & Hayden, 2000, Behav. Ecol.
Sociobiol.): |
See more on male-male competiton, antler evolution
in Concepts |
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