e-journal

Male reproductive cycle in Aspidoscelis costata costata (Squamata: Teiidae) from Tonatico, Estado deM
exico, M
exico

---

The purpose of this study was to investigate the reproductive cycle of a highelevation population of Aspidoscelis costata costata (1500–1600 m) and compare its reproductive cycle with that of other populations, species, and closely related genera. Adult male A. costata costata lizards were collected, and the reproductive
tracts were removed and subjected to histological analyses. Testicular activity commences in March with maximum testicular activity and highest sperm abundance (in the epididymides) occurring between May and July. The testis remains at peak activity until September when a late regression/early quiescent phase is observed. Leydig cells follow this same pattern except these hormone-producing cells remain at maximum secretory level through September. Sperm are present in the epididymides in April–September. This pattern is consistent with the spring recrudescence found in a multitude of male lizard taxa. However, this differs from the continuous cycle observed in some tropical Teiid species and other lizard taxa at high elevation. This study indicates that our knowledge about lizard spermatogenic cycles remains incomplete, and additional studies are required to
fully understand the interactions between phenotype, evolution, phylogenetics and environment.

Keywords: spermatogenesis, reproduction, lizard, testis, histology

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Acta Zoologica (Stockholm)

No. Panggil

-

Penerbit

: The Royal Swedish Academy of Sciences., 2015

Deskripsi Fisik

Acta Zoologica (Stockholm) 96: 108–116 (January 2015)

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

96: 108–116 (January 2015)

Subjek

PERTANIAN.
BIOLOGI

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar