The Effects of Paternity on Interactions between Adult Male and Immature Chimpanzees in Captivity

1995 ◽  
Vol 65 (3) ◽  
pp. 174-180 ◽  
Author(s):  
J.D. Pruetz ◽  
M.A. Bloomsmith
Keyword(s):  
Adult Male ◽  
In Captivity

scholarly journals Bilateral Intratesticular Spermatoceles in a Critically Endangered Dama Gazelle (Nanger dama mhorr)

2020 ◽  
Vol 2020 ◽  
pp. 1-3
Author(s):  
Riley E. Thompson ◽  
Holly J. Haefele ◽  
Daniel P. O’Neil ◽  
Budhan S. Pukazhenthi
Keyword(s):  
Adult Male ◽  
Threatened Species ◽  
Wild Population ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Normal Sperm ◽  
The Us ◽  
In Captivity

Dama gazelles (Nanger dama mhorr) are considered critically endangered by the IUCN Red List of Threatened Species since the wild population is comprised of fewer than 200 animals. Several zoos in Europe and some private ranches in the US (Texas) maintain this species in captivity as a hedge against extinction. A routine reproductive exam on an adult male revealed bilateral cysts in the testicular parenchyma. The fluid in the cysts contained copious, moderately progressive motile spermatozoa. Following examination, the gazelle was diagnosed with bilateral intratesticular spermatoceles. Electroejaculation yielded 1.5 ml of semen containing 387×106 total sperm with 50% motility and 45% morphologically normal sperm. The spermatoceles did not appear to cause pain or dysfunction, so no treatment was performed at this time. Since fewer than 10 animals are managed in captivity in the US, no intervention (castration/hemicastration) was considered.

Risk-Taking By Juvenile Vervet Monkeys

Behaviour ◽  
1993 ◽  
Vol 124 (1-2) ◽  
pp. 57-72 ◽  
Author(s):  
Lynn A. Fairbanks
Keyword(s):  
Adult Male ◽  
Risk Taking ◽  
Cercopithecus Aethiops ◽  
Human Observer ◽  
Vervet Monkeys ◽  
Novel Food ◽  
Food Container ◽  
Test Conditions ◽  
In Captivity ◽  
Cercopithecus Aethiops Sabaeus

AbstractBecause of their greater vulnerability to mortality, juveniles might be expected to be more conservative than adults in response to novel and potentially threatening situations. Results from research on vervet monkeys (Cercopithecus aethiops sabaeus) in the field and in captivity suggest that the opposite is true. Juveniles in the field were more likely to approach a human observer, and in captivity they had shorter latencies to enter a new area, approach a novel food container, and come within a meter of a strange adult male when compared to younger and older animals. In all four test conditions, risk-taking was an inverted U-shaped function of age. Latency to approach in unfamiliar and potentially dangerous situations declined from birth to two years of age, then increased with age to adulthood.

Time and Space Sharing Between Platypuses (Ornithorhynchus anatinus) in Captivity.

1998 ◽  
Vol 20 (2) ◽  
pp. 195
Author(s):  
M.R. Hawkins
Keyword(s):  
Adult Male ◽  
Activity Patterns ◽  
Free Access ◽  
Feeding Time ◽  
Light Cycle ◽  
Active Period ◽  
Dominant Animal ◽  
Ornithorhynchus Anatinus ◽  
In Captivity ◽  
Continuous Presence

Detailed video monitoring studies of the activity patterns of platypuses, Ornithorhynchus anatinus, given free access to a variable captive system were conducted. When alone, platypuses in captivity linked their activity to the nocturnal light cycle and followed a predictable pattern of activity. This was mostly confined to the dark photo-period and with long periods of continuous presence in the water. When individuals were paired a 'dominance' relationship usually developed. The adult male was dominant over the females in all combinations. In the pairing of a sub-adult male and female, the female remained dominant and between two females there was little indication of dominance. The dominant animal's pattern of activity in the water remained similar to that when kept alone, except for a slight lengthening of its active period and spread of activity. The second animal's active period shortened and became more fragmented. The spread of its activity increased and the activity moved more into the high light periods when the dominant animal was not present. All the activity criteria examined could reflect different strategies for the separation of the activity- cycles changes to the length of the active period, leaving the tank when the other animal was present, increasing the spread of activity, extending activity into the 'daylight' period. It was concluded that one reason behind the changes of activity pattern in paired platypuses was the desire for an un-interrupted feeding time.

scholarly journals The spontaneous tool use by raven in a zoo

2019 ◽  
Vol 12 (3) ◽  
pp. 135-141
Author(s):  
M.A. Vancatova ◽  
T. Klima
Keyword(s):  
Adult Male ◽  
Tool Use ◽  
Social Behaviour ◽  
Aggressive Behaviour ◽  
Natural Conditions ◽  
Interspecies Communication ◽  
Daily Contact ◽  
In Captivity ◽  
The Given

Ravens are known for their ability to use tools, both in captivity and in natural conditions. This activity is connected mainly to nourishment-related or aggressive behaviour. At Košice Zoo, we carried out an observation of raven tool use behaviour, with the observation focused on contact with a human, that can be interpreted as social behaviour within the context of interspecies communication. In all observed cases (54) of raven tool use, this type of behaviour only manifested itself in an adult male. The raven was inclined to mostly choose longer tools for an attack. In roughly the same measure, the raven uses a new tool, or uses the same tool repeatedly. Concerning the working of the tool, a tool that has not been worked on predominates significantly in this case. In the case of working the tool, the male raven nibbles or shortens the sticks with his beak. A human in and of himself does not represent danger to ravens in a zoo, because the birds are in daily contact with zookeepers. In the given situation, it seems that male raven was aiming to establish contact with a visitor. The entire situation is more reminiscent of a game, rather than the protection of the nest. The whole situation of using the tool was spontaneous and in no case was prepared in advance or otherwise induced experimentally.

Oral Myiasis in a Captive Hippopotamus

2009 ◽  
Vol 26 (3) ◽  
pp. 168-170 ◽  
Author(s):  
João Luiz Rossi Junior ◽  
Flaviana L. Guião-Leite ◽  
Marco Antonio Gioso ◽  
Léslie M. Domingues Falqueiro ◽  
Roberto Silveira Fecchio
Keyword(s):  
Oral Cavity ◽  
Periodontal Disease ◽  
Adult Male ◽  
Dental Pulp ◽  
Canine Tooth ◽  
Dental Eruption ◽  
In Captivity ◽  
Mandibular Canine ◽  
Dental Infections

Causes of dental infections can be related to failed dental eruption, malocclusion, abrasion, fractures with or without exposure of the dental pulp, and periodontal disease. Reports of oral myiasis in megavertebrates in captivity are infrequent, perhaps due to the difficulty in observing the oral cavity in such species. This report describes a case of oral myiasis in an adult male hippopotamus in the gingival area and alveolar mucosa of the left mandibular canine tooth.

scholarly journals Energy requirement for maintenance of growing and adult male lesser mouse deer (Tragulus javanicus) in captivity

2011 ◽  
Vol 76 (3) ◽  
pp. 365-368 ◽  
Author(s):  
Darlis ◽  
Norhani Abdullah ◽  
Juan Boo Liang ◽  
Yin Wan Ho
Keyword(s):  
Adult Male ◽  
Energy Requirement ◽  
In Captivity

Histomorphometry of iliac crest trabecular bone in adult male baboons in captivity

1993 ◽  
Vol 52 (6) ◽  
pp. 447-454 ◽  
Author(s):  
Christine M. Schnitzler ◽  
Ugo Ripamonti ◽  
Julia M. Mesquita
Keyword(s):  
Trabecular Bone ◽  
Adult Male ◽  
Iliac Crest ◽  
In Captivity

The effect of captivity on fighting by Rattus villosissimus (Rodentia : Muridae)

1979 ◽  
Vol 27 (4) ◽  
pp. 537
Author(s):  
JL Carstairs
Keyword(s):  
Natural Selection ◽  
Adult Male ◽  
In Captivity ◽  
In The Wild ◽  
Selection Of

Fifteen-min encounters were staged between adult male R. villosissimus in a neutral cage. Rats (F0) which had been trapped in the wild from a dispersed and declining population were quicker to start fighting and spent more time in the offensive sideways posture and fighting each other than did rats (F1) which had been born and raised in captivity. This result may support Chitty's hypothesis on the natural selection of self-regulatory behaviour. The differences between F0 and F1 encounters were not so great when the F0 rats were retested after a further 4 months in captivity. Possible explanations are discussed.

Notes on the Biology of the Tortoise Geochelone denticulate L. in Peru

1984 ◽  
Vol 5 (3-4) ◽  
pp. 323-327 ◽  
Author(s):  
Lily O. Rodriguez Bayona ◽  
Michael K. Rylander
Keyword(s):  
Body Weight ◽  
Adult Female ◽  
Adult Male ◽  
Reproductive Behavior ◽  
Forest Floor ◽  
Domestic Animals ◽  
South American ◽  
Biometric Data ◽  
In Captivity ◽  
In The Wild

The South American tortoise Geochelone denticulata was studied in the wild near Iquitos, Peru, and in enclosures in Lima. In the wild, specimens fed regularly on a variety of fruits that had fallen to the forest floor, as well as on mushrooms, dead animals and fæces. The reproductive behavior of the species is described. Captive tortoises consumed 100-125 g of food a day and experienced a weight increase of 43.3 g per day . Biometric data for 143 adult male and 57 adult female tortoises indicate that the length of the carapace is longer in males than in females, and that the length of the carapace and body weight were correlated (r2 = 80%) . A survey of 80 families in the area revealed the extent to which this species is utilized for food, as compared to fish and domestic animals. Problems associated with raising this species in captivity are discussed.

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