Evaluation of behavioral factors influencing reproductive success and failure in captive giant pandas

Zoo Biology ◽  
2004 ◽  
Vol 23 (1) ◽  
pp. 15-31 ◽  
Author(s):  
Guiquan Zhang ◽  
Ronald R. Swaisgood ◽  
Hemin Zhang
Keyword(s):  
Reproductive Success ◽  
Behavioral Factors ◽  
Giant Pandas ◽  
Factors Influencing

Settlement patterns, foraging behavior, and reproductive success of ospreys along a heterogeneous riverine corridor

2007 ◽  
Vol 85 (1) ◽  
pp. 56-62 ◽  
Author(s):  
Peter J. Harmata ◽  
Marco Restani ◽  
Alan R. Harmata
Keyword(s):  
Reproductive Success ◽  
Foraging Behavior ◽  
Settlement Patterns ◽  
Missouri River ◽  
Nest Density ◽  
River Section ◽  
Pandion Haliaetus ◽  
Factors Influencing ◽  
Spatial Use ◽  
Gill Netting

In 1998 and 1999, we determined the spatial distribution, foraging behavior, and reproductive success of ospreys ( Pandion haliaetus (L., 1758)) nesting along the upper Missouri River, Montana. We combined our data with that collected in the same area in 1981–1982 and 1990–1991 to investigate factors influencing settlement patterns. The study area was composed of four distinct habitats, three reservoirs and one free-flowing river section. Although number of occupied nests on each habitat increased from 1981–1982 to 1998–1999, the greatest percentage increases in nest density occurred on habitats previously hypothesized to contain the least prey. Osprey reproductive success was positively related to foraging rates, which differed across habitats, being highest on reservoirs and lowest on the free-flowing river. However, reproductive success was adequate for replacement on each habitat. Most fish consumed by ospreys on each habitat were suckers (Catostomidae), followed by salmonids and cyprinids. Fish density, determined from gill netting, was highest on the largest and shallowest reservoir. Over two decades, ospreys shifted their relative spatial use of the upper Missouri River such that reservoirs were occupied first and the free-flowing river section was occupied last. The degree to which presence of conspecifics, distribution of nest trees and prey, and dispersal affected settlement patterns probably varied by spatial scale.

Riverine characteristics and adult demography influence female lake sturgeon (Acipenser fulvescens) spawning behavior, reproductive success, and ovarian quality

2019 ◽  
Vol 76 (7) ◽  
pp. 1147-1160 ◽  
Author(s):  
Kari J. Dammerman ◽  
Molly A.H. Webb ◽  
Kim T. Scribner
Keyword(s):  
Reproductive Success ◽  
Behavioral Plasticity ◽  
Lake Sturgeon ◽  
Operational Sex Ratio ◽  
Plasma Testosterone ◽  
Acipenser Fulvescens ◽  
Reproductive Costs ◽  
Arrival Date ◽  
Factors Influencing ◽  
Yearly Means

Abiotic conditions and demographic factors can influence the timing of spawning. Behavioral plasticity allows females to select spawning conditions that are conducive to offspring development; however, reproductive costs associated with delaying spawning are not well understood. In this study, factors influencing timing of female spawning, residence time (RT), and reproductive success (RS) during two seasons were determined, and plasma testosterone concentrations were used to quantify atretic rates in a wild, lake sturgeon (Acipenser fulvescens) population. For the 123 females monitored, RT ranged from 1 to 23 days and was influenced by arrival date, temperature, discharge, and male number, with the latter having the largest influence. RS varied due to arrival date, temperature, discharge, male number, male length, and operational sex ratio. Two females had testosterone levels indicative of atresia and RS estimates lower than yearly means; however, most females had normal ovaries, suggesting little reproductive costs of plasticity in spawning ground residency time. Results demonstrate the multitude of factors influencing female reproductive behavior and RS, highlighting the importance of abiotic and demographic conditions to recruitment in wild populations.

scholarly journals Assessment of behavioral factors influencing cooperation in logistics

2020 ◽  
Vol 18 (3) ◽  
pp. 34-44 ◽  
Author(s):  
Tetiana Kolodizieva
Keyword(s):  
Supply Chain ◽  
Supply Chains ◽  
Methodological Approach ◽  
Behavioral Approach ◽  
Dual Relationships ◽  
Behavioral Factors ◽  
Factors Influencing ◽  
The Social

The article explores theoretical and methodical aspects of managing dual relationships that arise between participants in logistic cooperation in the process of formation and functioning of supply chains. The use of a behavioral approach to defining supply chains has allowed identifying and justifying the priority role of behavioral factors that influence modern logistics entities and determine the effectiveness and long-term satisfaction with logistics cooperation. Given the literature summary, the study has classified types of cooperation in logistic activity and proved that among the behavioral factors influencing the of logistical cooperation efficiency, the trust is of particular importance, which remains a limitation, a bottleneck in the process of formation and development of dual relationships in logistics chains. It is proposed to introduce a generic indicator, namely the level of confidence in the supply chain to assess the social, economic and strategic aspects of logistics interaction. A methodological approach to assessing the level of trust in logistic cooperation was adjusted based on determining the composition of criteria that directly affect this indicator and using the expert survey of supply chain participants. The study proposes to use the confidence indicator to form and improve networks and supply chains, taking into account its value when constructing a generalized outsourcing model.

Behavioral factors influencing childhood obesity: a systematic review and meta-analysis

2020 ◽  
Vol 14 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Jalal Poorolajal ◽  
Fatemeh Sahraei ◽  
Younes Mohamdadi ◽  
Amin Doosti-Irani ◽  
Leila Moradi
Keyword(s):  
Systematic Review ◽  
Childhood Obesity ◽  
Meta Analysis ◽  
Behavioral Factors ◽  
Factors Influencing

scholarly journals Constraints on control: factors influencing reproductive success in male mandrills (Mandrillus sphinx)

2005 ◽  
Vol 16 (3) ◽  
pp. 614-623 ◽  
Author(s):  
Marie Charpentier ◽  
Patricia Peignot ◽  
Martine Hossaert-McKey ◽  
Olivier Gimenez ◽  
Joanna M. Setchell ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Mandrillus Sphinx ◽  
Control Factors ◽  
Factors Influencing

Factors influencing reproductive success in the clonal moss, Hylocomium splendens

Oecologia ◽  
2005 ◽  
Vol 147 (3) ◽  
pp. 445-454 ◽  
Author(s):  
Knut Rydgren ◽  
Nils Cronberg ◽  
Rune H. Økland
Keyword(s):  
Reproductive Success ◽  
Hylocomium Splendens ◽  
Factors Influencing

scholarly journals Factors influencing male affiliation and coalitions in a species with male dispersal and intense male–male competition, Colobus vellerosus

Behaviour ◽  
2014 ◽  
Vol 151 (7) ◽  
pp. 1045-1066 ◽  
Author(s):  
Julie A. Teichroeb ◽  
Eva C. Wikberg ◽  
Nelson Ting ◽  
Pascale Sicotte
Keyword(s):  
Reproductive Success ◽  
Group Size ◽  
Species Interactions ◽  
Male Competition ◽  
Adult Males ◽  
Cooperative Relationships ◽  
Colobus Vellerosus ◽  
Male Dispersal ◽  
Factors Influencing ◽  
High Level

Male Colobus vellerosus compete intensely for access to females, which sometimes leads to mortal wounding. Yet, males often form cooperative relationships to overtake prime-aged males and immigrate into bisexual groups. We investigated the factors that predicted the presence of coalitions and affiliative relationships among males in this species. Interactions among males in 292 dyads from six groups were examined from 2004 to 2010 at Boabeng-Fiema, Ghana. Affiliation rates among males were higher and aggression rates lower when one or both males in the dyad were subadult, compared to adult male dyads. Affiliation rates tended to be higher among males that were kin but no other aspect of male relationships predicted affiliation. Coalitions among males were rarely observed and primarily occurred in the context of joint defense against extra-group males (93.5% of events). Adult males were more likely to provide coalitionary support than subadults and coalitions occurred significantly more often when both males were high ranking, since these males probably benefited most in terms of reproductive success from excluding extra-group males. Rank-changing and leveling coalitions among low-ranking males appear to be quite rare or absent in C. vellerosus. The costs of these types of coalitions may be too high or male group size too small on average for these types of coalitions to have been selected for. The overall low rates of affiliation and coalitions among male C. vellerosus are likely influenced by male-biased dispersal and the high level of male–male competition.

Sign in / Sign up

Export Citation Format

Share Document