Contrasting life-histories in two syntopic amphibians of the Leptodactylus fuscus group (Heyer 1978)

被引：5

作者：

Marangoni, Federico ^{[1
,2
]}

Courtis, Azul ^{[1
]}

Pineiro, Jose M. ^{[1
,4
]}

Ingaramo, Maria del Rosario ^{[1
]}

Cajade, Rodrigo ^{[1
,3
]}

Stanescu, Florina ^{[3
,5
]}

机构：

[1] Univ Nacl Nordeste FACENA UNNE, Fac Ciencias Exactas & Nat & Agrimensura, Dept Biol, CONICET, Av Libertad 5470, Corrientes, Argentina

[2] Chelonia Argentina, Virasoro 2804, RA-3400 Corrientes, Argentina

[3] Chelonia Romania, Pascani5,Sect 6, Bucharest 062082, Romania

[4] Fdn Amado Bompland, San Juan 1182, RA-3400 Corrientes, Argentina

[5] Ovidius Univ Constanta, Fac Nat & Agr Sci, Al Univ 1,Campus B,Lab P43, Constanta 900470, Romania

来源：

ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS | 2019年 / 91卷 / 03期

关键词：

age; Anura; body size; growth; Leptodactylus bufonius; Leptodactylus latinansus; SEXUAL SIZE DIMORPHISM; FROG RANA-SYLVATICA; TOAD BUFO-CALAMITA; BODY-SIZE; WOOD FROG; GEOGRAPHIC-VARIATION; GROWTH-PATTERN; ANURA LEPTODACTYLIDAE; ALTITUDINAL VARIATION; REPRODUCTIVE-BIOLOGY;

D O I：

10.1590/0001-3675201920180507

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We used skeletochronology to compare age, size, reproductive parameters and growth patterns of two related, anuran amphibians from Northern Argentina: Leptodactylus bufonius (n=69) and L. latinasus (n=56), in order to better understand their coexistence in syntopy. Previous studies showed that the two species overlap in their dietary requirements and utilize the same habitats for feeding and breeding. We found that their life-history patterns are significantly different. L. bufonius being larger, and having a higher reproductive output and lifespan, compared to the smaller and shorter-living L. latinasus. Since none of the species exhibited sexual size dimorphism, and both acquired sexual maturity after the first year of life, we suggest that the differences in the observed life-history parameters must appear during early stages of development, during larval and/or juvenile stages.

引用

页数：16