Results 51 to 60 of about 13,957 (247)

Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes

The Anatomical Record, EarlyView.
Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield, Marco Camaiti, Lucy Roberts   +2 more
wiley   +1 more source

Effects of intraspecific competition on the life cycle of the stonefly, Nemurella pictetii (Plecoptera: Nemouridae)

BMC Ecology, 2008
Background Considerable variation of life cycle duration in given insect species has been frequently recorded. Splitting of populations into cohorts with different life cycle lengths may occur, sometimes even between siblings from the same batch.
Zwick Peter, Lieske Reimo
doaj   +1 more source

Optimal Forest Management in the Presence of Intraspecific Competition

Mathematical Population Studies, 2011
The Escalator Boxcar Train method is used to solve the distributed optimal control problems of forest management numerically. It takes into account intraspecific competition for scarce resources such as light, space, and nutrients during reproduction, growth, and mortality. It provides an alternative to gradient projection methods and Markov processes.
Goetz, Renan-Ulrich, Xabadia i Palmada, Àngels, Calvo, Elena   +2 more
openaire   +2 more sources

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

The Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo, Faysal Bibi, Jean‐Renaud Boisserie, Jackson K. Njau, Ignacio de la Torre   +4 more
wiley   +1 more source

Intraspecific competition in row spacings in soybean [PDF]

Emirates Journal of Food and Agriculture
The aim of this study is to assess the impact of various row spacings on the morphology, components of grain yield, and overall grain yield of soybean. The experiments were conducted over two planting seasons (2014/2015 and 2015/2016) using two planting ...
Vinícius dos Santos Cunha, Glauber Monçon Fipke, Gerusa Massuquini Conceição, Tânia Maria Müller, João Leonardo Fernandes Pires, Fernando Sintra Fulaneti, Thomas Newton Martin   +6 more
doaj   +3 more sources

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Intraspecific higher order interactions enhance ecological community stability

Scientific Reports
Ecosystem stability is influenced by interspecific interactions, with recent research focusing on how third-party species modify these interactions.
Akihiko Mougi
doaj   +1 more source

Chemical communication in free-ranging gray brocket deer (Mazama gouazoubira)

Biotemas, 2017
Chemical communication is intensely used by deer, especially scent-marking behaviors, with territory marking mainly made by males. This work presents several video recordings of at least two gray brockets (male and female) chemically communicating via ...
Juliano André Bogoni, Rafael Barbizan Sühs, Maurício Eduardo Graipel, Nivaldo Peroni   +3 more
doaj   +1 more source

Mid‐Domain Effect and Wooded Habitat Shape Mediterranean Reptile Communities

Biological Diversity, EarlyView.
Analyzing a large number of reptiles observed across protected areas in Central Italy, we tested whether the mid‐domain effect explains hump‐shaped richness–elevation patterns. Species richness was best predicted by the combined influence of geometric constraints and woodland cover, revealing two contrasting species clusters and offering a robust ...
Daniele Dendi, Lauren De Nardi, Giovanni Amori, Luca Luiselli   +3 more
wiley   +1 more source

Functional responses and intraspecific competition in the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) provided with Melanaphis sacchari (Homoptera: Aphididae) as prey

European Journal of Entomology, 2018
Functional responses at each developmental stage of predators and intraspecific competition associated with direct interactions among them provide insights into developing biological control strategies for pests.
Pengxiang WU, Jing ZHANG, Muhammad HASEEB, Shuo YAN, Lambert KANGA, Runzhi ZHANG   +5 more
doaj   +1 more source