Biology of the Deep-Water Shrimp Heterocarpus Ensifer (Caridea: Pandalidae) Off the Canary, Madeira and the Azores Islands (Northeastern Atlantic)
2009; Oxford University Press; Volume: 29; Issue: 4 Linguagem: Inglês
10.1651/08-3070.1
ISSN1937-240X
AutoresVíctor M. Tuset, JoséA. Pérez-Peñalvo, José A. González, Mário Pinho, João Delgado, Manuel Biscoito, Dalila Carvalho, JoséI. Santana,
Tópico(s)Coral and Marine Ecosystems Studies
ResumoAn analysis of size and reproduction of Heterocarpus ensifer (Caridea: Pandalidae) off the Macaronesian archipelagos (Canary, Madeira, and the Azores islands, northeastern Atlantic) is done. The size range of samples was similar among the archipelagos studied, around |$9-39{\text{ mm}}$| carapace length (CL). The carapace length/wet weight relationship showed a negative allometry in males and varied in females. One-way analysis of regression slopes |$(b)$| among archipelagos pointed out significant differences in all groups with the exception of males. Growth parameters indicated that males are smaller in size, but grow faster than females. Growth performance |$(\Phi{\text{’}})$| estimates varied between 2.69 and 2.81, pointing out a very similar growth pattern among regions. Ovigerous females were present in all months sampled with a mass spawning period in spring and summer, which are the seasons when the water is warmer. Size at maturity was estimated in |$22.4{\text{ mm CL}}$| for the Canary Islands and |$25.7{\text{ mm CL}}$| for Madeira. In general, the life history of this deep-water species is similar in the three archipelagos.
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