A new insular subspecies of the speckled rattlesnake
نویسندگان
چکیده
منابع مشابه
Rain-harvesting by the Southwestern Speckled Rattlesnake (crotalus Mitchellii Pyrrhus)
Acquiring water is a challenge for desert animals, and organisms inhabiting arid regions have evolved morphological, physiological, and behavioral traits to maintain an appropriate water balance. On four occasions, I observed rain-harvesting or observed behaviors suggestive of rain harvesting in a population of speckled rattlesnakes (Crotalus mitchellii) in the Mojave Desert of southwestern Nor...
متن کاملBody Size Evolution in Insular Speckled Rattlesnakes (Viperidae: Crotalus mitchellii)
BACKGROUND Speckled rattlesnakes (Crotalus mitchellii) inhabit multiple islands off the coast of Baja California, Mexico. Two of the 14 known insular populations have been recognized as subspecies based primarily on body size divergence from putative mainland ancestral populations; however, a survey of body size variation from other islands occupied by these snakes has not been previously repor...
متن کاملVagabond males and sedentary females: spatial ecology and mating system of the speckled rattlesnake (Crotalus mitchellii)
We used radiotelemetric data and behavioural observations to characterize seasonal (mating versus post-mating seasons) and sexual variation in movement patterns, as well as to examine some of the ecological factors contributing to the evolution of the mating system in a venomous predator from the Mojave Desert of North America, the speckled rattlesnake, Crotalus mitchellii. Mating occurs in spr...
متن کاملA new species, and a new record of a subspecies belonging to the genus Dysaphis (Homoptera: Aphididae) from Iran
افراد بی‌بال زنده‌زا‌ی شته‌ی Dysaphis inulae sp. n. جمع‌آوری شده از روی Inula britanica توصیف می‌شود و زیرگونه‌ی D. lappae cynarae (Theobald) جمع‌آوری شده از روی Silybum marianum مجدداً توصیف شده و به عنوان رکورد جدید از ایران گزارش می‌گردد. کلید شناسائی گونه‌های جنس Dysaphis Boerner که روی گیاهان خانواده‌ی Asteraceae زندگی می‌کنند نیز ارایه شده است.
متن کاملUrochloa panicoides and a subspecies of Eragrostis cilianensis, new to the flora of Iran
In reviewing of Poaceae family specimens in "IRAN" Herbarium, Urochloa panicoides belonging to Paniceae tribe and Eragrostis cilianensis (All.) Vign.-Lut. ex Janchen subsp. starosselskyi (Grossh.) Tzvelev to Eragrostideae tribe are reported as new to Iran. The first taxon is a corn field weed in Fars province and the second is rare plant from W. Azerbaijan province.
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ژورنال
عنوان ژورنال: Transactions of the San Diego Society of Natural History.
سال: 1963
ISSN: 0080-5947
DOI: 10.5962/bhl.part.9596