Developmental temperature, not inbreeding, shapes life history and locomotor behaviors in juvenile guppies (Poecilia reticulata)

Inbreeding is thought to play a strong role in shaping life-history traits and behaviors.  Supporting evidence for this role often comes from observational studies. Experiments that establish causality and formally test how environmental factors moderate any effects of inbreeding remain underutilized. We ran an experiment to test how developmental temperature and inbreeding influence key life-history traits (growth rate, size, and age at maturity, survival, sex ratio), and locomotor behaviors (boldness and habituation) in juvenile guppies (Poecilia reticulata). We used a controlled breeding design to generate inbred and outbred individuals that were then reared under a control (26°C) or an elevated temperature (30°C) until maturity. Developmental temperature strongly affected life-history traits; both sexes matured earlier at 30°C, but only males exhibited slower early growth and reduced size at maturity. Female growth and size at maturity were unaffected. The higher developmental ..., , # Developmental temperature, not inbreeding, shapes life history and locomotor behaviors in juvenile guppies (Poecilia reticulata)

**File name:** **life-history-data-chp2remm.csv**

* baby_id = ID of individual offspring

- dob = date of birth of individual offspring

* father.id = id of father

- mother.id = id of mother

* crosstype = type of crossing

- breeding = type of breeding

* block = number of block

- temp = temperature

* gestation = days of gestation period

- survival.maturity = if survived till maturity (1 = yes, 0 = no)

* sex = male or female

- date_maturity = day when one matured

* age_at_maturity = number of days one took to mature

- size_maturity_cm = size at maturity in centimetre

* size_maturity_mm = size at maturity in millimetre

- size0_cm = size at birth (cm)

* size0_mm = size at birth (mm)

- size28_cm = size at day 28 (cm)

* size28_mm = size at day 28 (mm)

- growth_rate_lncm/d = instantaneous growth rate Lncm per day

* growth_rate_lnmm/d = instantan...,