Courtship and Nesting Behviour of the Freshwater Crocodile, Crocodylus johnstoni, under COntrolled Conditions

1981 ◽  
Vol 8 (2) ◽  
pp. 443 ◽  
Author(s):  
AW Compton
Keyword(s):  
Growth Rate ◽  
Breeding Season ◽  
Reproductive Behaviour ◽  
Crocodylus Johnstoni ◽  
Controlled Conditions ◽  
Freshwater Crocodile ◽  
In Captivity ◽  
Courtship Activity

Freshwater crocodiles were maintained in captivity, and during the 1978 breeding season the reproductive behaviour of two pairs was observed. During 23 days, 14 courtships were recorded. Typical courtship activity is described. Nesting activities always occurred between sundown and 2130 h. During incubation females visited their respective nests regularly but did not appear to be protective. The growth rate of developing embryos is described and nest opening by the female recorded.

Reproductive behaviour of cane rats (Thryonomys swin-derianus) in captivity

1994 ◽  
Vol 40 (1) ◽  
pp. 95
Author(s):  
A. Schwarzenberg ◽  
C.H. Stier ◽  
A. Bessei ◽  
C.F. Gall
Keyword(s):  
Reproductive Behaviour ◽  
In Captivity

scholarly journals Captive Hill Mynah Gracula religiosa breeding success: potential for bird conservation in Thailand?

2005 ◽  
Vol 15 (4) ◽  
pp. 327-335 ◽  
Author(s):  
MANEE ARCHAWARANON
Keyword(s):  
Captive Breeding ◽  
Natural Populations ◽  
Reproductive Behaviour ◽  
Free Access ◽  
Bird Conservation ◽  
Species Survival ◽  
Conservation Problem ◽  
In Captivity ◽  
In The Wild ◽  
Nest Materials

Hill Mynah Gracula religiosa is one of the most popular bird pets worldwide due to its ability to mimic diverse sounds, especially human speech. However, Mynahs have rarely been bred in captivity, so nestlings from natural populations are in large demand, resulting in many populations being threatened with extinction. Both subspecies in Thailand, intermedia and religiosa, are costly and desired in the pet market. Captive breeding is one of the most practical strategies to solve a conservation problem of this nature and this report describes a success in breeding Hill Mynahs in captivity. Mated pairs were given free access to food, nest-cavities and nest materials. Reproductive behaviour in captivity was not different from that in the wild, with the exception that breeding occurred throughout the year, even during the non-breeding season for wild populations. Although there are doubts concerning the reintroduction of captive-bred birds and whether successful Hill Mynah breeding in captivity is an economically competitive alternative to poaching, it ensures species survival in captivity as the risk of extinction increases.

scholarly journals Amblyomma rotundatum (Koch, 1844) (Acari: Ixodidae) two-host life-cycle on Viperidae snakes

2010 ◽  
Vol 19 (3) ◽  
pp. 174-178 ◽  
Author(s):  
Daniel Sobreira Rodrigues ◽  
Ricardo Maciel ◽  
Lucas Maciel Cunha ◽  
Romário Cerqueira Leite ◽  
Paulo Roberto de Oliveira
Keyword(s):  
Life Cycle ◽  
North America ◽  
Relative Humidity ◽  
Total Duration ◽  
Ixodid Tick ◽  
Natural Conditions ◽  
South Central ◽  
Controlled Conditions ◽  
In Captivity ◽  
Host Life

Amblyomma rotundatum is an ixodid tick that infests ectothermic animals and reproduces exclusively by parthenogenesis. This tick has been frequently reported to infest reptiles and amphibians, under natural conditions and sometimes in captivity. It was described in Brazil and several other countries of South, Central and North America. Although many studies have reported aspects of its biology, none of them has used regularly either ophidian as hosts, or controlled temperature, humidity and luminosity for parasitic stages. The objective of this experiment was to study the life cycle of A. rotundatum feeding on Viperidae snakes under room controlled conditions at 27 ± 1 ºC temperature, 85 ± 10% relative humidity and 12:12 hours photoperiod for parasitic stages, and under B.O.D incubator conditions at 27 ± 1 ºC temperature, 85 ± 10% relative humidity and scotophase for non-parasitic stages. The total duration of the life cycle ranged from 56 to 163 days (mean of 105 days). Two-host life cycle was observed for most of the ixodid population studied.

scholarly journals Diurnal activity pattern of white-rumped vulture, Gyps bengalensis (Gmelin, 1788) in captivity during breeding season at Bangladesh National Zoo, Dhaka

2018 ◽  
Vol 7 (1) ◽  
pp. 81-85
Author(s):  
Md Abraharul Islam ◽  
Monirujjaman ◽  
Rasel Ahammed ◽  
Mahruma Aktar
Keyword(s):  
Breeding Season ◽  
Activity Pattern ◽  
Diurnal Activity ◽  
In Captivity ◽  
National Zoo ◽  
Gyps Bengalensis

Abstract not availableJahangirnagar University J. Biol. Sci. 7(1): 81-85, 2018 (June)

Growth Rates of Cranes Reared in Captivity

The Auk ◽  
1986 ◽  
Vol 103 (1) ◽  
pp. 125-134 ◽  
Author(s):  
Robert E. Ricklefs ◽  
Donald F. Bruning ◽  
George W. Archibald
Keyword(s):  
Growth Rate ◽  
Incubation Period ◽  
Rate Constant ◽  
Bird Species ◽  
Growth Rate Constant ◽  
Egg Mass ◽  
In Captivity ◽  
Altricial Birds ◽  
Adult Mass ◽  
Rates Of Growth

Abstract We measured eggs, incubation periods, growth of chicks, and masses of adults of 10 species of cranes at the Bronx Zoo and the International Crane Foundation. Growth rate constants of Gompertz equations fitted to the data varied between 0.034 and 0.057/day. These values were 50-90% of those for altricial birds of comparable adult mass, and were considerably greater than those of other precocial species, such as galliforms. Rates of growth intermediate between altricial and precocial species are consistent with the fact that crane chicks, although precocial, are brooded and fed by their parents during much of the early development period. Within species, asymptote (A) and growth-rate constant (K) of the Gompertz equations were negatively correlated, owing to their inherent relationship in the curve-fitting process. Masses of chicks during the first month after hatch were unrelated to the mass asymptote, but correlated strongly with the estimated growth-rate constant. The mass of the neonate was about 60% of the fresh mass of the egg. Egg mass was unrelated to subsequent chick mass during the first month, but correlated with the mass asymptote in two species when the relationship between A and K was accounted for statistically. Egg mass also was correlated with incubation period, fledging period, and the growthrate constant in isolated instances. Growth rate and asymptote among species were inversely related, as found among large samples of diverse bird species. The size of the egg relative to the mass of the adult was related inversely to adult mass, again consistent with patterns in other groups of birds. Fledging period was related strongly to the length of the incubation period and weakly to the asymptote to the growth curve, and it was unrelated to growth-rate constant of the Gompertz equation.

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