Reproductive Seasonality and Life-history Traits of the Coastal Darter, Etheostoma colorosum (Pisces: Percidae), from the Escambia River Drainage of Florida

被引：0
|
作者：
Heins, David C. [1 ]
机构：
[1] Tulane Univ, Dept Ecol & Evolutionary Biol, New Orleans, LA 70118 USA
来源：
SOUTHEASTERN NATURALIST | 2020年 / 19卷 / 02期
关键词：
CLUTCH SIZE; OOCYTES;
D O I：
10.1656/058.019.0213
中图分类号：
X176 [生物多样性保护];
学科分类号：
090705 ;
摘要：
I took samples of Etheostoma colorosum (Coastal Darter) from Canoe Creek, a tributary to the Escambia River in northwest Florida. Examination of ovaries from female darters showed reproduction (presence of clutch-bearing females) occurred from January into June 1989, with the greatest activity (percentage of clutch-bearing females) occurring mid-February to early May. Females begin reproducing at age 1 and can live 2 years. During the height of the reproductive season, females measuring 27-42 mm standard length produced clutches of 5-69 eggs. Clutch size, adjusted for female length, was greater mid-season in March than in February or April and May. Mature oocytes averaged 1.06 mm diameter, mean ripening oocyte diameter was 1.12 mm, and mean ripe egg diameter was 1.22 mm.
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页码：339 / 346
页数：8
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