Results 91 to 100 of about 4,840 (232)

Menopause Averted a Midlife Energetic Crisis With Help From Older Dependent Children and Parents: A Simulation Study

American Journal of Biological Anthropology, Volume 190, Issue 3, July 2026.
ABSTRACT Objectives The grandmother hypothesis proposes that ancestral women ceased reproduction midlife to instead provision their grandchildren. An alternative “two‐sex” account proposes that the high energetic burden of caring for slow‐developing offspring was met with biparental investment.
Edward H. Hagen
wiley   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, Volume 309, Issue 7, Page 1713-1748, July 2026.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

Status of African baobab (Adansonia digitata) across Gonarezhou National Park, Zimbabwe

Journal of Applied Sciences and Environmental Management, 2014
An assessment was done to determine the abundance and structure of baobab (Adansonia digitata) across Gonarezhou National Park, Zimbabwe. Baobabs were sampled on fifteen belt transects of constant width of 300 m with fifteen baobabs in each belt transect
C Mashapa, P Nyabawa, P Zisadza-Gandiwa, J Muvengwi, S Kativu, E Gandiwa   +5 more
doaj   +1 more source

Improved Detection and Sequencing of Rickettsia spp. DNA in South African Wildlife

Veterinary Medicine and Science, Volume 12, Issue 4, July 2026.
Nested gltA PCR detected Rickettsia spp. DNA in 44% of South African wildlife samples previously negative by RLB, revealing spotted fever, typhus and transitional group lineages, novel host records, co‐infection and multi‐organ dissemination in impala, highlighting complex wildlife involvement and zoonotic risk within a One Health framework.
Carlo Andrea Cossu, Maria Luisa Menandro, Alessandra Mondin, Giorgia Dotto, Raksha Vasantrai Bhoora, Henriette van Heerden   +5 more
wiley   +1 more source

Habitat use, feeding ecology and the impact of re-introduced elephants (Loxodonta africana) on trees within a restricted conservation area in the semi-arid, Little Karoo, South Africa

, 2009
Includes abstract.Includes bibliographical references (leaves 83-97).The reintroduction of free-roaming elephants on the 540 km2 Sanbona Wildlife Reserve in the Little Karoo, Western Cape, South Africa, raised concerns over the possible negative impacts ...
Erasmus, Krynauw
core  

Predictors of testosterone in male African elephants (Loxodonta africana)

, 2020
Male African elephant (Loxodonta africana) populations in zoos suffer from a range of reproductive complications. In particular, insufficient testosterone production can have a detrimental effect on spermatogenesis and fertility.
Campbell, Kaitlyn
core  

Preliminary data on forest elephants (Loxodonta africana cyclotis) in southwestern Nigeria

Pachyderm, 2009
Elephant numbers in Nigeria have decreased greatly and the rate of this decline cannot be established owing to the insufficiency of available data. The number of forest elephants in particular is especially difficult to determine because of the dense ...
Rachel Ikemeh
doaj   +1 more source

The impacts of biological invasions

Biological Reviews, Volume 101, Issue 3, Page 1255-1310, June 2026.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock, Teun Everts, Neil Angelo S. Abreo, Jamie Bojko, Victor Deklerck, James W. E. Dickey, Ana Clara S. Franco, Emili García‐Berthou, Stelios Katsanevakis, Natalia I. Kirichenko, Stefano Mammola, Martin A. Nuñez, Ben Parker, Riccardo Scalera, Ismael Soto, Diederik Strubbe, Ali Serhan Tarkan, Lorenzo Vilizzi, Tim Adriaens, Paride Balzani, Dagmara Błońska, Elizabeta Briski, Rein Brys, Amy L. Burgess, James E. Byers, Carlos Cano‐Barbacil, Giuseppe Castaldelli, Jaimie T.A. Dick, Victoria Dominguez Almela, Romina D. Dimarco, Margarita Florencio, Antonín Kouba, Melina Kourantidou, Irmak Kurtul, Irene Martín‐Forés, Olivier Morissette, Julian D. Olden, Bruno E. Soares, Jakub Truszkowski, Hugo Verreycken, Marc Kenis, Ronaldo Sousa, J. Robert Britton   +42 more
wiley   +1 more source

Odontoma in an African elephant (Loxodonta africana).

Journal of the South African Veterinary Association, 1990
The first known case of an odontoma in an African elephant (Loxodonta africana) is described. The tumour was fused with the coronal cementum of the sixth right mandibular molar tooth, thus preventing its eruption.
E J, Raubenheimer, W F, van Heerden, M L, Turner, L K, Maré   +3 more
openaire   +1 more source

A Preliminary Analysis of the Immunoglobulin Genes in the African Elephant (Loxodonta africana)

PLoS ONE, 2011
The genomic organization of the IgH (Immunoglobulin heavy chain), Igκ (Immunoglobulin kappa chain), and Igλ (Immunoglobulin lambda chain) loci in the African elephant (Loxodonta africana) was annotated using available genome data. The elephant IgH locus on scaffold 57 spans over 2,974 kb, and consists of at least 112 V(H) gene segments, 87 D(H) gene ...
Yongchen Guo, Yonghua Bao, Hui Wang, Xiaoxiang Hu, Zhihui Zhao, Ning Li, Yaofeng Zhao   +6 more
openaire   +4 more sources