Bulletin (Southern California Academy of Sciences) articles from December 2004

Bulletin (Southern California Academy of Sciences) archives from December 2004

Status of nesting ospreys in Coastal Baja California, Sonora and Sinaloa, Mexico, 1977 and 1992-1993.
December 1, 2004... Abstract.--We used a double-sampling technique (air + ground surveys), with partial double coverage and an additional adjustment for lack of nesting synchrony in southern latitudes, to estimate the size of the osprey (Pandion haliaetus) nesting...

Caudal spine replacement and histogenesis in the round stingray, Urobatis halleri.
December 1, 2004... Abstract.--Many stingray species replace their poisonous caudal spines seasonally; however, it is hypothesized that spine replacement may also be induced through a traumatic injury to the caudal spine. To determine whether the round stingray,...

Ecological impacts of seed-harvester ants on the phenological events of seven Mojave Desert shrub species in Southern Nevada.
December 1, 2004... Abstract.--Ecological impacts of a seed-harvester ant (Pogonomyrmex rugosus) infestation on the phenological characteristics of surrounding seven Mojave Desert shrub species were quantitatively investigated in Las Vegas Valley of southern...

Preferential Burrow entrance placement in the Dulzura kangaroo rat, Dipodomys simulans.
December 1, 2004... Abstract.--This study examined burrow location preferences in the Dulzura kangaroo rat, Dipodomys simulans. Burrow entrances known to be occupied by individual kangaroo rats on two experimental sites were identified and the distances to the...

Age and growth of young-of-the-year (YOY) California halibut (Paralichthys californicus), from Northwestern Baja California.
December 1, 2004... Abstract.--Ninety-nine young-of-the-year (YOY) California halibut (Paralichthys californicus), collected from Bahia de Todos Santos (BTS, n = 29), Estero de Punta Banda (EPB, n = 36) and Bahia de San Quintin (BSQ, n = 34), Baja California...

Reproduction in the San Lucan alligator lizard, Elgaria paucicarinata (Anguidae) from Baja California Sur, Mexico.(Research Notes)
December 1, 2004... Elgaria paucicarinata is restricted to the Cape Region of Baja California Sur (Grismer 2002). While Lais (1976) summarized the biology of this species and Grismer (2002) collected hatchlings during August, information on the reproductive...

Reproduction in the San Lucan banded rock lizard, Petrosaurus thalassinus (Phrynosomatidae) from Baja California Sur, Mexico.(Research Notes)
December 1, 2004... Petrosaurus thalassinus is restricted to the Cape Region of Baja California, occurring in four disjunct populations (Grismer 2002). The biology of this species was summarized by Grismer (2002), however information on the reproductive biology in...