Temperature-dependent sex determination in the Kemp’s ridley sea turtle: effects of incubation temperatures on sex ratios
نویسندگان
چکیده
منابع مشابه
Do operational sex ratios influence sex allocation in viviparous lizards with temperature-dependent sex determination?
Under certain environmental situations, selection may favour the ability of females to adjust the sex ratio of their offspring. Two recent studies have suggested that viviparous scincid lizards can modify the sex ratio of the offspring they produce in response to the operational sex ratio (OSR). Both of the species in question belong to genera that have also recently been shown to exhibit tempe...
متن کاملDiet of the Kemps ridley sea turtle , Lepidochelys kempii , in New York waters
A review of previous studies on Kemp's ridley sea turtle (Lepidochelys kempii) diet was combined with information on the diet of the species in the coastal waters of New York State. Juvenile Kemp's ridleys occupy coastal Long Island, New York waters during the summer and early autumn months. Both fecal and intestinal samples collected between 1985 and 1989 were analyzed to obtain information on...
متن کاملTemperature-dependent sex determination
Reptiles posses two main mechanisms of sex determination. In some species the sex of the individual is determined at conception by sex factors contained in sex chromosomes (termed genotypic sex determination or GSD). However, in other species sex is determined after conception by the environmental temperature during incubation and cannot be predicted by zygotic genotype (Bull, 1983; Valenzuela ...
متن کاملExperimental assessment of the effects of moisture on loggerhead sea turtle hatchling sex ratios.
Many reptiles have temperature-dependent sex determination (TSD). Sex determination in marine turtles is described by a cool-male, warm-female pattern. Nest sand temperature strongly influences sea turtle embryo development and sex differentiation. Yet, variation in hatchling sex ratios is explained only partially by nest temperature and can be predicted only at the warmest and coolest temperat...
متن کاملIncubation temperature causes skewed sex ratios in a precocial bird.
Many animals with genetic sex determination are nonetheless capable of manipulating sex ratios via behavioral and physiological means, which can sometimes result in fitness benefits to the parent. Sex ratio manipulation in birds is not widely documented, and revealing the mechanisms for altered sex ratios in vertebrates remains a compelling area of research. Incubation temperature is a key comp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Endangered Species Research
سال: 2012
ISSN: 1863-5407,1613-4796
DOI: 10.3354/esr00465