Results 41 to 50 of about 233,936 (357)

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

Pentatomidae of Arkansas [PDF]

open access: yes, 1981
A total of 30 genera and 53 species and subspecies of Pentatomidae are reported as occurring or possibly occurring in Arkansas. Fifty species and subspecies contained in 29 genera were collected or recorded from previously collected material.
Barton, Harvey E., Lee, Linda A.
core   +2 more sources

Early Pliocene Varanus (Squamata, Varanidae) remains from Megalo Emvolon, Thessaloniki, Greece

open access: yesThe Anatomical Record, EarlyView.
The article describes new cranial and postcranial varanid material from Megalo Emvolon Lower Pliocene vertebrate fossil site near Thessaloniki. The fossils, likely representing a single individual, are referred to Varanus cf. marathonensis. Abstract This study describes new fossil varanid material from a recently discovered fossil spot (MVL site) at ...
Chara Drakopoulou   +3 more
wiley   +1 more source

The Biology of Canadian Weeds. 131. \u3cem\u3ePolygonum aviculare\u3c/em\u3e L. [PDF]

open access: yes, 2005
A review and assessment of biological information as well as personal data are provided for Polygonum aviculare in Canada. The species has been revised taxonomically and the six subspecies that occur in Canada are presented.
Costea, Mihai, Tardif, François J.
core   +1 more source

Reassessment of the invasion history of two species of Cakile (Brassicaceae) in Australia [PDF]

open access: yes, 2013
In this paper we revisit the invasion history of two species of Cakile in Australia. Cakile edentula subsp. edentula arrived in the mid 19th Century and spread into coastal strandline habitat from the southeast towards the west and to the north; Cakile ...
Ades, Peter K.   +3 more
core   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Notes on the Strumariinae (Amaryllidaceae-Amaryllideae). Six new taxa in Strumaria and Hessea from the central and northwestern Cape, South Africa, and southern Namibia

open access: yesBothalia: African Biodiversity & Conservation, 1992
Newly described are four species and a subspecies of Strumaria and one species of Hessea. S.  aestivalis  Snijman from the Langberg and  S. perryae Snijman from the Bokkeveld escarpment are rare species closely allied to S. pubescens W.F. Barker.
D. J. Snijman
doaj   +1 more source

Mitochondrial genome-based synthesis and timeline of Eurasian otter (Lutra lutra) phylogeography

open access: yesAnimal Cells and Systems, 2023
Eurasian otters (Lutra lutra) have a broad distribution across Eurasia, but biogeographic data outside of western Europe is limited to disconnected pockets.
Sarah J. du Plessis   +5 more
doaj   +1 more source

A summary of the published data on host plants and morphology of immature stages of Australian jewel beetles (Coleoptera: Buprestidae) : with additional new records [PDF]

open access: yes, 2013
A summary is given of the published host plant and descriptive immature stage morphology data for 671 species and 11 subspecies in 54 genera of Australian jewel beetles (Coleoptera: Buprestidae).
Bellamy, Charles L.   +3 more
core   +1 more source

Does salinity make a difference—Kidney anatomy of Saimaa (Pusa saimensis) and Baltic ringed seals (Pusa hispida botnica)

open access: yesThe Anatomical Record, EarlyView.
Abstract As habitat salinity markedly differs between the endangered, freshwater‐dwelling Saimaa ringed seal (Pusa saimensis Nordquist, 1899) and the brackish water‐inhabiting Baltic ringed seal (Pusa hispida botnica Gmelin, 1788), we investigated whether this difference has resulted in morphological changes to their kidneys.
Heini Nihtilä, Juha Laakkonen
wiley   +1 more source

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