Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effects of maternal identity and incubation temperature on hatching and hatchling morphology in snapping turtles, Chelydra serpentina
Autore:
Steyermark, AC; Spotila, JR;
Indirizzi:
Drexel Univ, Dept Biosci & Biotechnol, Philadelphia, PA 19104 USA Drexel Univ Philadelphia PA USA 19104 technol, Philadelphia, PA 19104 USA Drexel Univ, Sch Environm Sci Engn & Policy, Philadelphia, PA 19104 USA Drexel Univ Philadelphia PA USA 19104 Policy, Philadelphia, PA 19104 USA
Titolo Testata:
COPEIA
fascicolo: 1, , anno: 2001,
pagine: 129 - 135
SICI:
0045-8511(20010216):1<129:EOMIAI>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
EGG-SIZE; CLUTCH SIZE; GROWTH; SEX; SURVIVAL; ECOLOGY; MASS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Steyermark, AC Univ Calif Los Angeles, Sch Med, Dept Physiol, Los Angeles,CA 90095 USA Univ Calif Los Angeles Los Angeles CA USA 90095 90095 USA
Citazione:
A.C. Steyermark e J.R. Spotila, "Effects of maternal identity and incubation temperature on hatching and hatchling morphology in snapping turtles, Chelydra serpentina", COPEIA, (1), 2001, pp. 129-135

Abstract

Offspring phenotype can be affected by maternal effects, developmental conditions, and clutch identity. We examined the contribution of maternal effects, egg incubation temperature, and clutch identity to variation in hatching success and hatchling body size of the snapping turtle, Chelydra serpentina. We collected 726 eggs representing 24 clutches from the John Heinz National Wildlife Refuge in 1997. We examined a subset of eggs (78) for water and solid content and incubated the remaining eggs. Wet shell and wet nonshell made up 10.96% and 88.05% of the total egg mass, respectively, and dry solids, dry shell, and total water accounted for 22.78%, 7.14%, and 70.07% of total egg mass. Both mass of total water and solids in the nonshell fraction increased with egg size, although solids accounted for slightly less proportional mass in large eggs than in small eggs. Egg mass was correlated with mass at hatching, but explained only 47% of the variation in mass at hatching. Both clutch identity and egg incubation temperature affected hatching success and hatchling size. Although maternal effects no doubt play an important role in determining hatchling size, other factors, independent ofmaternal effects, influenced hatchling size.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 17:29:00