scholarly journals Transgenerational effect alters the interspecific competition between two dominant species in a temperate steppe

2021 ◽  
Vol 11 (3) ◽  
pp. 1175-1186
Author(s):  
Yang Li ◽  
Longyu Hou ◽  
Liuyi Yang ◽  
Ming Yue
Keyword(s):  
Interspecific Competition ◽  
Dominant Species ◽  
Temperate Steppe ◽  
Transgenerational Effect

The effect of Anonchocephalus chilensis Riggenbach (Eucestoda: Bothriocephalidea) on infracommunity patterns in Genypterus maculatus Tschudi (Osteichthyes: Ophidiidae)

2008 ◽  
Vol 82 (3) ◽  
pp. 221-226 ◽  
Author(s):  
S.A. Muñoz ◽  
M. George-Nascimento
Keyword(s):  
Body Size ◽  
Interspecific Competition ◽  
Body Mass ◽  
Marine Fish ◽  
Fish Species ◽  
Dominant Species ◽  
Null Models ◽  
Marine Fish Species ◽  
Species Occurrence ◽  
Volumetric Measures

AbstractThe use of parasite body size (i.e. body mass) is a promising proxy to improve the study of patterns in parasite infracommunities, which are usually analysed using only numerical descriptors. This study deals with the importance and effect of the presence of a large endoparasite species, the cestode Anonchocephalus chilensis in a marine fish species, Genypterus maculatus, on the structure of the parasite infracommunities. Numerical and volumetric measures of aggregated properties of parasite infracommunities were compared and their correlation examined. The highly dominant presence of A. chilensis by volume causes a dramatic change in the patterns observed, including a smaller total volume of the remaining species when this volumetrically dominant species is present. However, C-scores and V-ratios, both indices based on null models of species occurrence, do not support the idea of communities structured by interspecific competition. Analyses reveal that numerical and volumetric community descriptors are complementary ways to search for patterns and to reveal processes within these systems.

Changes in the herb layer of the riverine woodland in the Sengwa Wildlife Research Area, Zimbabwe

Bothalia ◽  
1981 ◽  
Vol 13 (3/4) ◽  
pp. 527-530
Author(s):  
P. R. Guy
Keyword(s):  
Interspecific Competition ◽  
Dominant Species ◽  
Research Area ◽  
Herb Layer

The changes in the dominant species of the herb layer, in particular Blumea gariepina DC., of riverine woodlandin the Sengwa Wildlife Research Area in Zimbabwe, were monitored over a period o f five years. Factors contributing to these changes appear to have been rainfall, utilization and interspecific competition.

Interspecific competition between Snellenius manilae and Meteorus pulchricornis, larval parasitoids of Spodoptera litura

2015 ◽  
Vol 105 (5) ◽  
pp. 583-588 ◽  
Author(s):  
W.-T. Chen ◽  
S.-Y. Hwang
Keyword(s):  
Interspecific Competition ◽  
Spodoptera Litura ◽  
Dominant Species ◽  
Ecological Niches ◽  
Parasitism Rate ◽  
Larval Parasitoids ◽  
Parasitism Rates ◽  
Meteorus Pulchricornis ◽  
Early Instar ◽  
Lepidoptera Noctuidae

AbstractSnellenius manilae (Ashmead) and Meteorus pulchricornis (Wesmael) (Hymenoptera: Braconidae) are larval endoparasitoids of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae). Both species preferentially parasitize early-instar S. litura and occupy similar ecological niches. Therefore, competition between the two species may occur. In this study, intrinsic competition and cage experiments were conducted to discuss the interactions between S. manilae and M. pulchricornis. The results indicated that in intrinsic competition, M. pulchricornis was always the dominant species. In cage experiments, when the total number of parasitoids was four, the parasitism rates following the release of one species were significantly higher than the release of two species simultaneously. In addition, parasitism rate of eight M. pulchricornis was also significantly higher than the parasitism rate of the treatment released four S. manilae and four M. pulchricornis simultaneously. Therefore, competition occurs between S. manilae and M. pulchricornis, and M. pulchricornis is typically the superior of the two species. The use of M. pulchricornis as a biological agent for S. litura should be considered.

DIVERSITY AND DISTRIBUTION OF ORIBATID MITE FAUNA(ACARI: ORIBATIDA) IN THE FOREST FLOOR OF SATKOSIA BASIPALLY WILD LIFE SANCTUARY, ODISHA, INDIA

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
SHELLEY ACHARYA ◽  
ADITI DUTTA
Keyword(s):  
Forest Floor ◽  
Dominant Species ◽  
Oribatid Mite ◽  
Soil Condition ◽  
Silica Content ◽  
Soil Mites ◽  
The Core ◽  
Humid Condition ◽  
Core Areas ◽  
Wild Life

The studies were mostly concentrated in Nine forest ranges of the WLS including the core areas. The soil of this region mostly is dry, red and with iron and silica content. Though the soil mites are prevalent in moist humid condition, we got a diversed population of 20 different species under 14 genera which is less than average probably due to the soil condition. Protoribates magnus is the dominant species in this study. The species with larger ranges were Scheloribates curvialatus.

A Different Kind of Animal

2019 ◽  
Author(s):  
Robert Boyd
Keyword(s):  
Cognitive Ability ◽  
Cultural Adaptation ◽  
Dominant Species ◽  
Large Scale ◽  
Human Beings ◽  
Unique Combination ◽  
Essential Ingredient ◽  
Princeton University

Human beings have evolved to become the most dominant species on Earth. This astonishing transformation is usually explained in terms of cognitive ability—people are just smarter than all the rest. But this book argues that culture—our ability to learn from each other—has been the essential ingredient of our remarkable success. The book shows how a unique combination of cultural adaptation and large-scale cooperation has transformed our species and assured our survival—making us the different kind of animal we are today. The book is based on the Tanner Lectures delivered at Princeton University, featuring challenging responses across the chapters.

Sign in / Sign up

Export Citation Format

Share Document